JPH06273590A - Melt processing method for waste - Google Patents
Melt processing method for wasteInfo
- Publication number
- JPH06273590A JPH06273590A JP5991293A JP5991293A JPH06273590A JP H06273590 A JPH06273590 A JP H06273590A JP 5991293 A JP5991293 A JP 5991293A JP 5991293 A JP5991293 A JP 5991293A JP H06273590 A JPH06273590 A JP H06273590A
- Authority
- JP
- Japan
- Prior art keywords
- solid waste
- melting
- waste
- boiling point
- low boiling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 86
- 238000010128 melt processing Methods 0.000 title description 10
- 239000002910 solid waste Substances 0.000 claims abstract description 157
- 238000002844 melting Methods 0.000 claims abstract description 154
- 230000008018 melting Effects 0.000 claims abstract description 154
- 238000009835 boiling Methods 0.000 claims abstract description 103
- 229910052751 metal Inorganic materials 0.000 claims description 112
- 239000002184 metal Substances 0.000 claims description 112
- 239000000126 substance Substances 0.000 claims description 94
- 230000005484 gravity Effects 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 2
- 239000010814 metallic waste Substances 0.000 abstract description 25
- 238000010438 heat treatment Methods 0.000 abstract description 15
- 230000002285 radioactive effect Effects 0.000 abstract description 12
- 230000006698 induction Effects 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 10
- 239000000155 melt Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 4
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 2
- 238000012937 correction Methods 0.000 description 48
- 150000002739 metals Chemical class 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000000919 ceramic Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000001816 cooling Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000010891 toxic waste Substances 0.000 description 2
- 229910018404 Al2 O3 Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、原子力施設等で発生す
る放射性の雑固体廃棄物及び毒性廃棄物、一般産業廃棄
物を溶融用容器内に投入して溶融させる廃棄物の溶融処
理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for melting treatment of radioactive miscellaneous solid waste and toxic waste generated in nuclear facilities and the like, and general industrial waste which is put into a melting vessel and melted. .
【０００２】[0002]
【従来の技術】放射性の雑固体廃棄物や毒性廃棄物を溶
融処理する装置として、特開昭６１−２０９３９９号公
報に記載されたものがある。この装置は、誘導加熱コイ
ルと、この誘導加熱コイルにより誘導加熱されるセラミ
ック製の溶融用容器とを備えており、溶融用容器を誘導
加熱しながら、該溶融用容器内に固体廃棄物を投入して
溶融させるようにしている。そして、溶融用容器内に固
体廃棄物をほぼ一杯になるまで溶融させた後、溶融湯を
冷却固化している。2. Description of the Related Art As an apparatus for melting and processing radioactive solid waste and toxic waste, there is one described in JP-A-61-209399. This device is equipped with an induction heating coil and a ceramic melting container that is induction-heated by the induction heating coil. While inductively heating the melting container, solid waste is put into the melting container. I try to melt it. Then, the solid waste is melted in the melting container until it is almost full, and then the molten metal is cooled and solidified.
【０００３】[0003]
【発明が解決しようとする課題】上記した構成の溶融処
理装置により固体廃棄物を実際に溶融させていると、と
きどき溶融湯面のコントロールが困難にあることがあ
り、溶融用容器に７〜８割程度しか溶融できなかった、
そこで、本発明者は、上記現象が発生する原因を調べて
みた。この原因調査の結果、固体廃棄物のうちの大量の
低沸点物質を含んだ廃棄物（例えば大量の油を含む金属
塊）を溶融用容器内の溶融湯に投入したときに、上記現
象が発生することがわかった。これは、溶融湯の温度が
１３００〜１６００℃とかなり高いことから、上記廃棄
物に含まれることがある多量の低沸点物質（水，油，溶
剤，低沸点金属）が溶融湯に投入されたとき該湯内で気
化して気泡になってしまうためである。尚、このうち、
水，油，溶剤等がガラスびんやブリキ容器に入っている
場合は溶湯表面で燃えてしまうのでこのような現象は生
じない。When the solid waste is actually melted by the melting treatment apparatus having the above-mentioned structure, it may sometimes be difficult to control the level of the molten metal. Could only be melted,
Therefore, the present inventor investigated the cause of the above phenomenon. As a result of this cause investigation, the above phenomenon occurs when a large amount of solid waste containing low-boiling-point substances (for example, a metal block containing a large amount of oil) is poured into the molten metal in the melting vessel. I found out that Since the temperature of the molten metal is as high as 1300 to 1600 ° C, a large amount of low boiling point substances (water, oil, solvent, low boiling point metal) that may be contained in the above-mentioned waste were added to the molten metal. This is because at this time, it vaporizes in the hot water to form bubbles. Of these,
If water, oil, solvent, etc. are contained in a glass bottle or tin container, such phenomenon does not occur because the surface of the molten metal burns.
【０００４】一方、固体廃棄物は、比重が２〜８とかな
りばらついているので、溶融したときの体積がはっきり
わからない。また、固体廃棄物のうちの低沸点金属を含
んだ固体廃棄物は、溶融湯面のコントロールが困難なた
め溶融用容器内が一杯にならない状態で溶融をやめてし
まったりすることがあった。[0004] On the other hand, the solid waste has a specific gravity of 2 to 8 and thus varies considerably, so that the volume of the solid waste when melted is not clear. Further, among the solid wastes, the solid wastes containing a low boiling point metal may stop melting in a state where the melting container is not full because it is difficult to control the molten metal surface.
【０００５】そこで、本発明の目的は、固体廃棄物を溶
融処理する場合に、溶融用容器内が溶融湯でほぼ一杯に
なるまで溶融させ得る廃棄物の溶融処理方法を提供する
にある。Therefore, an object of the present invention is to provide a method for melting and treating a solid waste which can be melted until the inside of the melting container is almost completely filled with the molten metal.
【０００６】[0006]
【課題を解決するための手段】本発明の廃棄物の溶融処
理方法は、固体廃棄物を溶融用容器内に投入して溶融さ
せる廃棄物の溶融処理方法において、前記固体廃棄物を
低沸点物質を含んだ固体廃棄物とそれ以外の固体廃棄物
とに分別し、前記溶融用容器内に先に前記低沸点物質を
含んだ固体廃棄物を投入して焼却溶融させるようにした
ところに特徴を有する。A method for melting a waste according to the present invention is a method for melting a waste in which a solid waste is put into a melting vessel and melted. Characterized in that it is separated into solid waste containing solid waste and other solid waste, and the solid waste containing the low boiling point substance is first charged into the melting container to incinerate and melt. Have.
【０００７】この場合、上記したように溶融用容器内に
先に低沸点物質を含んだ固体廃棄物を投入して溶融させ
た後、前記溶融用容器内に貯留されている溶融湯の湯面
の位置を検出し、この検出した湯面の位置と前記低沸点
物質を含まない固体廃棄物の比重とに基づいて前記溶融
用容器内に投入可能な該固体廃棄物の重量を演算し、そ
して、前記低沸点物質を含まない固体廃棄物を前記演算
した重量だけ投入するようにすることも好ましい。In this case, as described above, after the solid waste containing the low boiling point substance is first charged into the melting container and melted, the surface of the molten metal stored in the melting container. Of the solid waste that can be put into the melting vessel based on the detected position of the molten metal surface and the specific gravity of the solid waste that does not contain the low boiling point substance, and It is also preferable to add the solid waste not containing the low boiling point substance in the calculated weight.
【０００８】[0008]
【作用】上記手段によれば、固体廃棄物を低沸点物質を
含んだ固体廃棄物とそれ以外の固体廃棄物とに分別し、
溶融用容器内に先に低沸点物質を含んだ固体廃棄物を投
入して溶融させるようにしたので、高温の溶融湯内に低
沸点物質が投入されることがなくなる。このため、溶融
湯面のコントロールが容易になる。According to the above means, the solid waste is separated into the solid waste containing the low boiling point substance and the other solid waste,
Since the solid waste containing the low-boiling point substance is first charged into the melting vessel to be melted, the low-boiling point substance is not charged into the high temperature molten metal. Therefore, it becomes easy to control the molten metal surface.
【０００９】また、固体廃棄物は、例えば炭素鋼，ステ
ンレス，無機物であるから、廃棄物の種類に応じてその
比重がだいだいわかっている。即ち、溶融したときの体
積がだいだいわかっている。Further, since solid wastes are, for example, carbon steel, stainless steel, and inorganic substances, it is known that the specific gravity depends on the type of waste. That is, the volume when melted is largely known.
【００１０】従って、溶融用容器内に先に低沸点物質を
含んだ固体廃棄物を投入して溶融させた後、溶融用容器
内に貯留されている溶融湯の湯面の位置を検出し、この
検出した湯面の位置と低沸点物質を含まない固体廃棄物
の比重とに基づいて溶融用容器内に投入可能な固体廃棄
物の重量を演算し、そして、低沸点物質を含まない雑固
体廃棄物を演算した重量だけ投入するようにすれば、溶
融用容器内がほぼ一杯になるまで溶融させることが可能
となる。Therefore, after the solid waste containing the low boiling point substance is first charged into the melting container and melted, the position of the surface of the molten metal stored in the melting container is detected, The weight of the solid waste that can be put into the melting vessel is calculated based on the detected position of the molten metal and the specific gravity of the solid waste that does not contain the low boiling point substance, and the miscellaneous solids that do not contain the low boiling point substance are calculated. If the calculated amount of waste is added, it is possible to melt the waste until the inside of the melting container is almost full.
【００１１】[0011]
【実施例】以下、本発明の一実施例につき図１を参照し
ながら説明する。図１は溶融装置全体の縦断面を示して
いる。この図１において、支枠１が基礎に立設されてお
り、この支枠１に密閉容器状の炉本体２が支持されてい
る。炉本体２は、非金属材料である例えば石英質製の円
筒状の側壁３と、この側壁３の上端に取付けられた金属
製の蓋部４とから構成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a vertical cross section of the entire melting apparatus. In FIG. 1, a supporting frame 1 is erected on a foundation, and a furnace body 2 in the form of a closed container is supported on the supporting frame 1. The furnace main body 2 is composed of a cylindrical side wall 3 made of, for example, silica, which is a non-metallic material, and a metallic lid portion 4 attached to the upper end of the side wall 3.
【００１２】また、上記基礎にはガイド５が立設されて
おり、このガイド５に昇降台６が昇降自在に案内されて
いる。この昇降台６は、図示しないモータ等からなる駆
動装置により昇降駆動されるように構成されている。上
記昇降台６の上部には、炉本体２の底部開口部を開閉す
る底蓋７が固着されている。また、炉本体２の側壁３の
外周部には、誘導加熱コイル８が配設されている。この
誘導加熱コイル８は、カバー９内に収容されており、空
冷或は水冷等の冷却方法によって冷却される構成となっ
ている。A guide 5 is erected on the foundation, and an elevating table 6 is guided by the guide 5 so as to be vertically movable. The lift table 6 is configured to be driven up and down by a drive device (not shown) including a motor and the like. A bottom cover 7 for opening and closing the bottom opening of the furnace body 2 is fixed to the upper part of the lift table 6. An induction heating coil 8 is arranged on the outer peripheral portion of the side wall 3 of the furnace body 2. The induction heating coil 8 is housed in the cover 9 and is cooled by a cooling method such as air cooling or water cooling.
【００１３】一方、炉本体２の側壁３の内側には、キャ
スタブル等の断熱材より成る円筒状の断熱壁１０が設け
られている。この断熱壁１０の上端部には、孔１１を有
する断熱蓋１２が取付けられており、この断熱蓋１２は
炉本体２または支枠１に固定支持されている。On the other hand, inside the side wall 3 of the furnace body 2, a cylindrical heat insulating wall 10 made of a heat insulating material such as castable is provided. A heat insulating lid 12 having a hole 11 is attached to an upper end portion of the heat insulating wall 10, and the heat insulating lid 12 is fixedly supported by the furnace body 2 or the supporting frame 1.
【００１４】また、底蓋７の上面には断熱材等の非金属
製の支台１３が取付固定されており、この支台１３上に
溶融用容器１４が載置されるようになっている。この溶
融用容器１４は、セラミック発熱体、好ましくはＣ−Ｓ
ｉＣ系またはＣ−Ａｌ2 Ｏ3系セラミックから構成され
ている。上記溶融用容器１４は、底蓋７及び支台１３と
共に昇降駆動されることにより、断熱壁１０内に下方か
ら挿脱自在に構成されている。A nonmetal support 13 such as a heat insulating material is attached and fixed to the upper surface of the bottom cover 7, and a melting vessel 14 is placed on the support 13. . The melting vessel 14 is a ceramic heating element, preferably C-S.
It is composed of iC-based or C-Al2 O3 -based ceramic. The melting container 14 is configured to be inserted into and removed from the heat insulating wall 10 from below by being driven up and down together with the bottom lid 7 and the abutment 13.
【００１５】更に、炉本体２の上部には、排ガス排出口
１５が設けられており、溶融時に発生する排ガス等を断
熱蓋１２の孔１１及び上記排ガス排出口１５を通して外
部へ導く構成となっている。尚、外部へ導かれた排ガス
は、周知構成のフィルタ装置（例えばセラミックフィル
タ及びＨＥＰＡフィルタから構成されている装置）によ
り排ガスに含まれている放射性の灰の除去が行われるよ
うになっている。Further, an exhaust gas discharge port 15 is provided in the upper part of the furnace main body 2 so that exhaust gas and the like generated during melting are guided to the outside through the hole 11 of the heat insulating lid 12 and the exhaust gas discharge port 15. There is. The exhaust gas guided to the outside is subjected to removal of radioactive ash contained in the exhaust gas by a filter device having a well-known structure (for example, a device including a ceramic filter and a HEPA filter).
【００１６】また、炉本体２の蓋部４には、溶融用容器
１４内へ放射性の雑固体廃棄物を投入する廃棄物投入口
１６、廃棄物または焼却灰中の未燃分を燃焼させるのに
必要な酸素含有ガスを供給する酸素供給管１７、並び
に、溶融用容器１４内の溶融状態を検知する検知装置１
８がそれぞれ貫通状に配設されている。ここで、上記検
知装置１８は、溶融湯の温度を検知する放射温度計、溶
融湯の湯面の位置を検知する例えばレーザー式の液面
計、モニタＴＶ用のＴＶカメラ等を備えて構成されてい
る。Further, the lid 4 of the furnace body 2 is provided with a waste inlet 16 for introducing radioactive miscellaneous solid waste into the melting vessel 14, and burns unburned components in the waste or incinerated ash. Oxygen supply pipe 17 for supplying an oxygen-containing gas necessary for the fuel cell, and a detection device 1 for detecting a molten state in the melting container 14.
8 are arranged in a penetrating manner. Here, the detection device 18 includes a radiation thermometer that detects the temperature of the molten metal, a laser level gauge that detects the position of the molten metal surface, a TV camera for a monitor TV, and the like. ing.
【００１７】次に、上記した構成の溶融装置１９を使用
して、放射性の雑固体廃棄物を溶融処理する方法、具体
的には三つの方法について説明する。Next, a method for melting and processing radioactive miscellaneous solid waste by using the melting apparatus 19 having the above-mentioned structure, specifically, three methods will be described.
【００１８】第１の溶融処理方法においては、まず、溶
融作業を行う前に、放射性の雑固体廃棄物を、低沸点物
質を含んだ雑固体廃棄物とそれ以外の雑固体廃棄物とに
分別する。この場合、それ以外の雑固体廃棄物（低沸点
物質を含まない雑固体廃棄物）については、更に、金属
以外の雑固体廃棄物（断熱材やコンクリート等）と、金
属廃棄物とに分別する。即ち、放射性の雑固体廃棄物
を、三つのグループに分別する。In the first melting treatment method, first, before carrying out the melting operation, radioactive miscellaneous solid waste is separated into miscellaneous solid waste containing low-boiling substances and miscellaneous miscellaneous solid waste. To do. In this case, other miscellaneous solid wastes (miscellaneous solid wastes that do not contain low boiling point substances) are further separated into miscellaneous solid wastes other than metals (insulation materials, concrete, etc.) and metal wastes. . That is, radioactive solid waste is separated into three groups.
【００１９】そして、誘導加熱コイル８に高周波電力を
通電して炉本体２を加熱し、最初に、上記三つのグルー
プのうちの低沸点物質を含んだ雑固体廃棄物を、廃棄物
投入口１６を介して溶融用容器１４内に投入して焼却溶
融させる。尚、溶融用容器１４内の温度は、１３００〜
１６００℃程度の高温に設定保持している。続いて、２
番目に、上記三つのグループのうちの金属以外の雑固体
廃棄物を、廃棄物投入口１６を介して溶融用容器１４内
に投入して溶融させる。更に続いて、３番目に、上記三
つのグループのうちの金属廃棄物を、廃棄物投入口１６
を介して溶融用容器１４内に投入して溶融させる。Then, high frequency electric power is supplied to the induction heating coil 8 to heat the furnace main body 2, and first, the miscellaneous solid waste containing the low boiling point substance of the above three groups is charged into the waste charging port 16 It is charged into the melting container 14 through the ingot and melted by incineration. The temperature in the melting container 14 is 1300 to
It is set and maintained at a high temperature of about 1600 ° C. Then 2
Next, the miscellaneous solid wastes other than the metals in the above three groups are charged into the melting container 14 through the waste charging port 16 and melted. Then, thirdly, the metal waste from the above-mentioned three groups is loaded into the waste input port 16
It is charged into the melting container 14 via and melted.
【００２０】この後、溶融用容器１４内に溶融湯が所定
量つまりほぼ一杯まで貯留されたら、誘導加熱コイル８
を断電して誘導加熱を止め、炉本体２を自然冷却等で冷
却する。そして、溶融用容器１４内の溶融物が固化した
ら、昇降台６を降下させて、支台１３上から溶融用容器
１４を取り去る。以下、新しい空の溶融用容器１４を支
台１３上に載置して上述した作業を繰り返すものであ
る。一方、上記取り去った溶融用容器１４、即ち、内部
の溶融物が固化した溶融用容器１４は、ドラム缶に収容
されると共に、そのドラム缶内にセメントモルタルが注
入固化される。これにより、輸送及び貯蔵に適した安定
した溶融固化体（ドラム缶充填体）が形成されるのであ
る。After this, when the molten metal is stored in the melting vessel 14 in a predetermined amount, that is, almost completely, the induction heating coil 8
Is cut off to stop induction heating, and the furnace body 2 is cooled by natural cooling or the like. Then, when the melted material in the melting container 14 is solidified, the elevating table 6 is lowered and the melting container 14 is removed from the abutment 13. Hereafter, a new empty melting vessel 14 is placed on the abutment 13 and the above-described work is repeated. On the other hand, the removed melting container 14, that is, the melting container 14 in which the melt is solidified is accommodated in a drum can and cement mortar is injected and solidified in the drum can. As a result, a stable melt-solidified body (drum can filling body) suitable for transportation and storage is formed.
【００２１】上記第１の溶融処理方法によれば、溶融用
容器１４内に先に低沸点物質を含んだ雑固体廃棄物を投
入して溶融させるように構成したので、高温の溶融湯が
形成されたときに追加投入する追加投入時には低沸点物
質が投入されなくなる。即ち、高温の溶融湯内に低沸点
物質が投入されることがなくなるため、従来構成とは異
なり、溶融湯面のコントロールが容易となる。According to the first melting treatment method described above, since the miscellaneous solid waste containing the low boiling point substance is first charged into the melting vessel 14 and melted, a high temperature molten metal is formed. The low boiling point substance is not added at the time of the additional charge. That is, since the low boiling point substance is not charged into the high-temperature molten metal, it is easy to control the molten metal surface unlike the conventional configuration.
【００２２】ところで、溶融処理方法においては、断熱
材やコンクリート等の金属以外の雑固体廃棄物だけを溶
融固化させると、固化物中にＣｏやＦｅ等の核種金属が
点状に集中して固化してしまうため、充填固化したドラ
ム缶の放射能のレベルを測定するときレベル測定が困難
になるという問題点がある。By the way, in the melting treatment method, when only miscellaneous solid waste other than metals such as heat insulating material and concrete is melted and solidified, nuclide metals such as Co and Fe are concentrated in a solid state in the solidified product and solidified. Therefore, there is a problem that it becomes difficult to measure the level when measuring the level of radioactivity of the filled and solidified drum.
【００２３】これに対して、上記溶融処理方法によれ
ば、金属廃棄物及び金属以外の廃棄物をそれぞれ投入し
て溶融し、固化物中にある程度の割合だけ金属層及びセ
ラミック層を形成するようにしているので、固化物中に
ＣｏやＦｅ等の核種金属が均一に分布するようになり、
又Ｃｓ等はセラミック層に均一に分布するようになり、
固化物が好ましい形態となる。従って、放射能のレベル
測定が容易になる。On the other hand, according to the above-mentioned melting treatment method, the metal waste and the waste other than the metal are respectively charged and melted so that the metal layer and the ceramic layer are formed in the solidified material to some extent. Therefore, nuclide metals such as Co and Fe are uniformly distributed in the solidified material,
Also, Cs etc. will be evenly distributed in the ceramic layer,
The solidified form is the preferred form. Therefore, it becomes easy to measure the level of radioactivity.
【００２４】また、上記溶融処理方法の場合、低沸点物
質を含んだ雑固体廃棄物を溶融させた後においては、金
属以外の雑固体廃棄物を先に投入し、その後、金属廃棄
物を投入する構成であるので、金属以外の雑固体廃棄物
である比較的軽い物が溶融するとき、重い金属廃棄物に
よって溶融湯中に押え付られるようになる。このため、
金属以外の雑固体廃棄物が溶融湯上に浮かばないように
し得るから、該雑固体廃棄物が溶融するのに要する時間
を短縮することができる。Further, in the case of the above-mentioned melting treatment method, after the miscellaneous solid waste containing the low boiling point substance is melted, the miscellaneous solid waste other than the metal is charged first, and then the metal waste is charged. With such a configuration, when a relatively light substance, which is a miscellaneous solid waste other than metal, is melted, it is pressed into the molten metal by heavy metal waste. For this reason,
Since miscellaneous solid waste other than metal can be prevented from floating on the molten metal, the time required for melting the miscellaneous solid waste can be shortened.
【００２５】次に、第２の溶融処理方法について説明す
る。この方法においても、まず、溶融作業を行う前に、
放射性の雑固体廃棄物を、三つのグループ、即ち、低沸
点物質を含んだ雑固体廃棄物、金属以外の雑固体廃棄
物、金属廃棄物（低沸点金属を含まないもの）に分別す
る。Next, the second melting treatment method will be described. Also in this method, first, before performing the melting operation,
Radioactive miscellaneous solid wastes are separated into three groups: miscellaneous solid wastes containing low-boiling substances, miscellaneous solid wastes other than metals, and metal wastes (not containing low-boiling metals).
【００２６】そして、炉本体２を加熱し、最初に、上記
三つのグループのうちの低沸点物質を含んだ雑固体廃棄
物を、廃棄物投入口１６を介して溶融用容器１４内に投
入して溶融させる。ここで、低沸点物質を含んだ雑固体
廃棄物の溶融が完了したら、検知装置１８の液面計によ
り、溶融用容器１４内に貯留されている溶融湯の湯面の
位置を検出する。そして、この検出した湯面の位置と、
低沸点物質を含まない雑固体廃棄物の比重とに基づい
て、溶融用容器１４内に投入可能な雑固体廃棄物の重量
を演算する。尚、低沸点物質を含まない雑固体廃棄物
は、廃棄物の種類に応じてその比重がだいだいわかって
いる。Then, the furnace main body 2 is heated, and first, the miscellaneous solid waste containing the low boiling point substance of the above three groups is charged into the melting vessel 14 through the waste charging port 16. To melt. Here, when the melting of the miscellaneous solid waste containing the low boiling point substance is completed, the position of the molten metal surface stored in the melting container 14 is detected by the liquid level gauge of the detection device 18. Then, the position of the detected molten metal surface,
The weight of the miscellaneous solid waste that can be put into the melting container 14 is calculated based on the specific gravity of the miscellaneous solid waste that does not contain the low boiling point substance. It should be noted that the specific gravity of miscellaneous solid waste that does not contain low-boiling substances depends largely on the type of waste.
【００２７】この後、低沸点物質を含まない雑固体廃棄
物を前記演算した重量だけ溶融用容器１４内に投入して
溶融させる。この場合、低沸点物質を含まない雑固体廃
棄物のうちの物質以外の雑固体廃棄物を、先に、溶融用
容器１４内に投入して溶融させ、続いて、低沸点物質を
含まない雑固体廃棄物のうちの金属廃棄物を溶融用容器
１４内に投入して溶融させる。この結果、溶融用容器１
４内に溶融湯が所定量つまりほぼ一杯まで溜る。この後
の冷却固化作業及びドラム缶への充填作業は、前記第１
の溶融処理方法と同様にして行う。Thereafter, the miscellaneous solid waste containing no low boiling point substance is put into the melting vessel 14 and melted by the calculated weight. In this case, the miscellaneous solid wastes other than the substances among the miscellaneous solid wastes not containing the low boiling point substance are first charged into the melting container 14 to be melted, and subsequently, the miscellaneous solid wastes not containing the low boiling point substance are mixed. Metal waste of the solid waste is put into the melting container 14 and melted. As a result, the melting container 1
A predetermined amount of the molten metal, that is, almost the whole of the molten metal, is accumulated in the container 4. The subsequent cooling and solidifying work and the filling work into the drum can are the same as those in the first embodiment.
It is performed in the same manner as in the melting treatment method.
【００２８】このような第２の溶融処理方法において
も、第１の溶融処理方法と同様な作用効果を得ることが
できる。加えて、第２の溶融処理方法によれば、溶融湯
の湯面の位置を検出し、この検出した湯面の位置と低沸
点物質を含まない雑固体廃棄物の比重とに基づいて溶融
用容器１４内に投入可能な雑固体廃棄物の重量を演算
し、そして、低沸点物質を含まない雑固体廃棄物を演算
した重量だけ投入するので、溶融物が溶融用容器１４内
に過不足なくほぼ一杯になるまで溶融させることができ
る。In the second melt processing method as described above, it is possible to obtain the same effect as that of the first melt processing method. In addition, according to the second melting treatment method, the position of the surface of the molten metal is detected, and based on the detected position of the molten metal and the specific gravity of the miscellaneous solid waste containing no low boiling point substance, Since the weight of miscellaneous solid waste that can be charged into the container 14 is calculated, and only the calculated weight of miscellaneous solid waste that does not contain a low boiling point substance is charged, the melt does not have an excess or deficiency in the melting container 14. It can be melted to almost full.
【００２９】尚、上記第２の溶融処理方法においては、
低沸点物質を含んだ雑固体廃棄物を溶融させた後の時点
で、溶融湯の湯面の位置を検出したが、これに代えて、
低沸点物質を含んだ雑固体廃棄物を最初に焼却溶融さ
せ、続いて、低沸点物質を含まない雑固体廃棄物のうち
の金属以外の雑固体廃棄物を溶融させた後の時点で、溶
融湯の湯面の位置を検出し、この検出した湯面の位置
と、金属廃棄物（低沸点金属を含まないもの）の比重と
に基づいて、溶融用容器１４内に投入可能な金属廃棄物
の重量を演算し、この後、金属廃棄物を演算した重量だ
け投入するようにしても良い。この溶融処理方法におい
ても、上記第２の溶融処理方法とほぼ同一の効果を得る
ことができるが、この場合、特に、比重が明確にわかる
金属廃棄物の投入重量だけを演算するので、演算結果の
精度がより一層高くなり、溶融物を溶融用容器１４内に
一層過不足なくほぼ一杯になるまで正確に溶融させるこ
とが可能になる。In the second melt processing method,
At the time after melting the miscellaneous solid waste containing low-boiling substances, the position of the molten metal surface was detected, but instead of this,
The miscellaneous solid waste containing low-boiling substances is first incinerated and melted, and then the miscellaneous solid waste other than metals among the miscellaneous solid waste containing no low-boiling substances is melted. The position of the hot water surface is detected, and based on the detected hot water position and the specific gravity of the metal waste (which does not contain low-boiling metal), the metal waste that can be put into the melting vessel 14 The weight of the metal waste may be calculated, and then the metal waste may be added by the calculated weight. This melting treatment method can also obtain almost the same effect as the second melting treatment method, but in this case, in particular, since only the weight of the metal waste whose specific gravity is clearly known is calculated, the calculation result Accuracy is further increased, and it becomes possible to accurately melt the melted material until it is almost full in the melting container 14 without excess or deficiency.
【００３０】さて、第３の溶融処理方法について説明す
る。この方法においても、まず、溶融作業を行う前に、
放射性の雑固体廃棄物を、三つのグループ、即ち、低沸
点物質を含んだ雑固体廃棄物、金属以外の雑固体廃棄
物、金属廃棄物（低沸点金属を含まないもの）に分別す
る。そして、炉本体２を加熱し、上記三つのグループの
うちの一つのグループを任意に選んで投入する。次に、
三つのグループのうちの他のグループを追加投入する
際、その追加投入するグループが、低沸点物質を含んだ
雑固体廃棄物である場合には、前に投入されているグル
ープの廃棄物が溶融用容器１４内の溶融湯の湯面を覆っ
ている状態（湯面が露出していない状態）で、追加投入
して溶融させるようにする。但し、最後に低沸点物質を
含まない廃棄物を溶融湯面コントロールのために残す。Now, the third melting treatment method will be described. Also in this method, first, before performing the melting operation,
Radioactive miscellaneous solid wastes are separated into three groups: miscellaneous solid wastes containing low-boiling substances, miscellaneous solid wastes other than metals, and metal wastes (not containing low-boiling metals). Then, the furnace body 2 is heated, and one of the above three groups is arbitrarily selected and introduced. next,
When another group out of the three groups is added, if the added group is miscellaneous solid waste containing low boiling point substances, the waste of the group previously put in is melted. In a state in which the surface of the molten metal in the container 14 is covered (state where the molten metal surface is not exposed), additional charging is performed to melt the molten metal. However, at the end, a waste containing no low-boiling substance is left for controlling the melt level.
【００３１】尚、三つのグループのうちの二つのグルー
プ、即ち、金属以外の雑固体廃棄物並びに金属廃棄物
（低沸点金属を含まないもの）を追加投入する際には、
湯面が露出していない状態で投入しても良いし、湯面が
露出している状態で投入しても良い。Incidentally, when two groups out of the three groups, namely, miscellaneous solid wastes other than metals and metal wastes (those not containing low boiling point metal) are additionally charged,
It may be charged with the molten metal surface not exposed or may be charged with the molten metal surface exposed.
【００３２】上記第３の溶融処理方法によれば、低沸点
物質を含んだ雑固体廃棄物を追加投入する場合、溶融用
容器１４内の溶融湯の湯面が雑固体廃棄物で覆われてい
る状態（湯面が露出していない状態）で、投入して溶融
させるようにしたので、湯面の上で低沸点物質が溶融し
て蒸発するようになり、高温の溶融湯中に低沸点物質が
入ることがなくなる。このため、溶融湯面のコントロー
ルが容易になり、従って、第３の溶融処理方法において
も、第１の溶融処理方法と同様な作用効果を得ることが
できる。According to the third melting treatment method, when the miscellaneous solid waste containing the low boiling point substance is additionally charged, the molten metal surface in the melting vessel 14 is covered with the miscellaneous solid waste. Since the substance with a low boiling point is melted and evaporated on the surface of the molten metal, the substance with a low boiling point is melted and evaporated on the surface of the molten metal while the molten metal has a low boiling point. The substance will not enter. For this reason, it becomes easy to control the level of the molten metal, and therefore, in the third melting treatment method as well, it is possible to obtain the same operational effect as in the first melting treatment method.
【００３３】又、常に溶融湯面が露出しないように溶融
すれば、溶融用容器１４内を満杯にすることはむつかし
いが、雑固体廃棄物を分別せずに処理できることは明ら
かである。Further, it is difficult to fill the inside of the melting container 14 by melting the molten metal so that the surface of the molten metal is not always exposed, but it is clear that miscellaneous solid waste can be treated without separation.
【００３４】[0034]
【発明の効果】本発明は以上の説明から明らかなよう
に、固体廃棄物を低沸点物質を含んだ固体廃棄物とそれ
以外の固体廃棄物とに分別し、溶融用容器内に先に低沸
点物質を含んだ固体廃棄物を投入して溶融させるように
したので、溶融湯面のコントロールが容易に可能という
優れた効果を奏する。As is apparent from the above description, the present invention separates solid waste into solid waste containing low-boiling substances and other solid waste, and first separates the solid waste into the melting vessel. Since the solid waste containing the boiling point substance is charged and melted, it has an excellent effect that the molten molten metal surface can be easily controlled.
【００３５】また、上記したように溶融用容器内に先に
低沸点物質を含んだ固体廃棄物を投入して溶融させた
後、溶融用容器内に貯留されている溶融湯の湯面の位置
を検出し、この検出した湯面の位置と低沸点物質を含ま
ない固体廃棄物の比重とに基づいて溶融用容器内に投入
可能な該固体廃棄物の重量を演算し、演算した重量だけ
低沸点物質を含まない固体廃棄物を投入するようにした
ので、溶融用容器内を溶融物でほぼ一杯になるように溶
融させることができる。Further, as described above, after the solid waste containing the low-boiling substance is first charged into the melting container and melted, the position of the molten metal surface stored in the melting container Is detected, and the weight of the solid waste that can be put into the melting vessel is calculated based on the detected position of the molten metal surface and the specific gravity of the solid waste that does not contain the low boiling point substance. Since the solid waste containing no substance having a boiling point is introduced, it is possible to melt the melting container so that the melting container is almost filled with the molten material.
【図１】本発明の一実施例を示す溶融装置全体の縦断面
図FIG. 1 is a vertical cross-sectional view of the entire melting apparatus showing an embodiment of the present invention.
２は炉本体、６は昇降台、７は底蓋、８は誘導加熱コイ
ル、１０は断熱壁、１２は断熱蓋、１４は溶融用容器、
１６は廃棄物投入口、１８は検知装置、１９は溶融装置
を示す。2 is a furnace body, 6 is a lift, 7 is a bottom lid, 8 is an induction heating coil, 10 is a heat insulating wall, 12 is a heat insulating lid, 14 is a melting vessel,
Reference numeral 16 is a waste input port, 18 is a detection device, and 19 is a melting device.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年６月１７日[Submission date] June 17, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００１[Correction target item name] 0001
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００１】[0001]
【産業上の利用分野】本発明は、原子力施設等で発生す
る放射性の雑固体廃棄物及び有害廃棄物、一般産業廃棄
物を溶融用容器内に投入して溶融させる廃棄物の溶融処
理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for melting and processing radioactive waste solid waste and hazardous waste generated in nuclear facilities and the like, and general industrial waste by putting them in a melting container and melting them. .
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００２[Name of item to be corrected] 0002
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００２】[0002]
【従来の技術】放射性の雑固体廃棄物や有害廃棄物を溶
融処理する装置として、特開昭６１−２０９３９９号公
報に記載されたものがある。この装置は、誘導加熱コイ
ルと、この誘導加熱コイルにより誘導加熱されるセラミ
ック製の溶融用容器とを備えており、溶融用容器を誘導
加熱しながら、該溶融用容器内に固体廃棄物を投入して
溶融させるようにしている。そして、溶融用容器内に固
体廃棄物をほぼ一杯になるまで溶融させた後、溶融湯を
冷却固化している。2. Description of the Related Art As an apparatus for melting and processing radioactive solid waste and hazardous waste, there is an apparatus described in JP-A-61-209399. This device is equipped with an induction heating coil and a ceramic melting container that is induction-heated by the induction heating coil. While inductively heating the melting container, solid waste is put into the melting container. I try to melt it. Then, the solid waste is melted in the melting container until it is almost full, and then the molten metal is cooled and solidified.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００３[Name of item to be corrected] 0003
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００３】[0003]
【発明が解決しようとする課題】上記した構成の溶融処
理装置により固体廃棄物を実際に溶融させていると、固
体廃棄物のうちの大量の低沸点物質を含んだ廃棄物（例
えば大量の油を含む金属塊）を溶融用容器内の溶融湯に
投入したときに、溶融湯面が一時的に上昇することがあ
った。これは、溶融湯の温度が１３００〜１６００℃と
かなり高いことから、上記廃棄物に含まれることがある
多量の低沸点物質（水，油，溶剤，低沸点金属）が溶融
湯に投入されたとき該湯内で気化して気泡になってしま
うためである。このため、多量の低沸点物質を含む廃棄
物を処理する場合は、溶融用容器の９０％程度の容量で
やめてしまうか、あるいは低沸点物質を前処理して除去
する必要があった。尚、このうち、水，油，溶剤等がガ
ラスびんやブリキ容器に入っている場合は溶湯表面で燃
えてしまうのでこのような対策は必要ない。 When is a solid waste was actually melted by INVENTION Problems to be Solved by melt processing apparatus with the above arrangement, the waste containing a large amount of low-boiling substances of solid <br/> body wastes When pouring (for example, a metal block containing a large amount of oil) into the molten metal in the melting vessel, the molten metal surface may rise temporarily.
It was. Since the temperature of the molten metal is as high as 1300 to 1600 ° C, a large amount of low boiling point substances (water, oil, solvent, low boiling point metal) that may be contained in the above-mentioned waste were added to the molten metal. This is because at this time, it vaporizes in the hot water to form bubbles. Therefore, waste containing a large amount of low boiling point substances
When processing things, use about 90% of the capacity of the melting container
Remove or pre-treat low boiling point substances
Had to do. If water, oil, solvent or the like is contained in a glass bottle or a tin container, it will burn on the surface of the molten metal, and therefore no such measures are required.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】削除[Correction method] Delete
【手続補正５】[Procedure Amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Name of item to be corrected] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００５】そこで、本発明の目的は、固体廃棄物を溶
融処理する場合に、多量の低沸点物質を含む雑固体廃棄
物を前処理除去することなく処理でき、且つ、溶融用容
器内が溶融湯で一杯になるまで溶融させ得る廃棄物の溶
融処理方法を提供するにある。Therefore, an object of the present invention is to perform miscellaneous solid waste treatment, in which a large amount of low-boiling substances are contained in the solid waste.
Objects can be processed without pre-treatment removed, and, to provide a melt processing method for waste melt for the container may be melted until it is full with molten hot water.
【手続補正６】[Procedure correction 6]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００７】この場合、上記したように溶融用容器内に
先に低沸点物質を含んだ固体廃棄物を投入して焼却溶融
させた後、前記溶融用容器内に貯留されている溶融湯の
湯面の位置を検出し、この検出した湯面の位置と前記低
沸点物質を含まない固体廃棄物の比重とに基づいて前記
溶融用容器内に投入可能な該固体廃棄物の重量を演算
し、そして、前記低沸点物質を含まない固体廃棄物を前
記演算した重量だけ投入するようにすることも好まし
い。In this case, as described above, after the solid waste containing the low boiling point substance is first charged into the melting vessel and incinerated and melted, the molten hot water stored in the melting vessel. The position of the surface is detected, and the weight of the solid waste that can be put into the melting container is calculated based on the detected position of the molten metal surface and the specific gravity of the solid waste that does not contain the low boiling point substance, It is also preferable that the solid waste not containing the low-boiling substance is added in the calculated weight.
【手続補正７】[Procedure Amendment 7]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００８】[0008]
【作用】上記手段によれば、固体廃棄物を低沸点物質を
含んだ固体廃棄物とそれ以外の固体廃棄物とに分別し、
溶融用容器内に先に低沸点物質を含んだ固体廃棄物を投
入して焼却溶融させるようにしたので、高温の溶融湯内
に低沸点物質が投入されることがなくなる。このため、
溶融湯面が一時的に上昇することがなくなる。 According to the above means, the solid waste is separated into the solid waste containing the low boiling point substance and the other solid waste,
Since the solid waste containing the low-boiling point substance is first charged into the melting container and incinerated and melted, the low-boiling point substance is not charged into the high-temperature molten metal. For this reason,
The molten metal surface does not rise temporarily.
【手続補正８】[Procedure Amendment 8]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】従って、溶融用容器内に先に低沸点物質を
含んだ固体廃棄物を投入して焼却溶融させた後、溶融用
容器内に貯留されている溶融湯の湯面の位置を検出し、
この検出した湯面の位置と低沸点物質を含まない固体廃
棄物の比重とに基づいて溶融用容器内に投入可能な固体
廃棄物の重量を演算し、そして、低沸点物質を含まない
雑固体廃棄物を演算した重量だけ投入するようにすれ
ば、溶融用容器内がほぼ一杯になるまで溶融させること
が可能となる。Therefore, after the solid waste containing the low boiling point substance is first charged into the melting vessel and incinerated and melted, the position of the molten metal surface stored in the melting vessel is detected. ,
The weight of the solid waste that can be put into the melting vessel is calculated based on the detected position of the molten metal and the specific gravity of the solid waste that does not contain the low boiling point substance, and the miscellaneous solids that do not contain the low boiling point substance are calculated. If the calculated amount of waste is added, it is possible to melt the waste until the inside of the melting container is almost full.
【手続補正９】[Procedure Amendment 9]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２１[Correction target item name] 0021
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２１】上記第１の溶融処理方法によれば、溶融用
容器１４内に先に低沸点物質を含んだ雑固体廃棄物を投
入して焼却溶融させるように構成したので、多量の低沸
点物質を含む雑固体廃棄物を前処理除去することなく処
理でき、また、高温の溶融湯が形成されたときに追加投
入する追加投入時には低沸点物質が投入されなくなる。
即ち、高温の溶融湯内に低沸点物質が投入されることが
なくなるため、従来構成とは異なり、溶融用容器内が溶
融湯で一杯になるまで溶融させることが可能となる。 According to the first melting treatment method described above, since the miscellaneous solid waste containing the low boiling point substance is first charged into the melting vessel 14 to be incinerated and melted, a large amount of low boiling point is generated.
Treatment of miscellaneous solid waste containing point substances without pretreatment removal
In addition, the low boiling point substance is not added at the time of additional charging when the high-temperature molten metal is formed.
That is, since the low boiling point substance is not charged into the high temperature molten metal, unlike the conventional configuration, the inside of the melting vessel is melted.
It becomes possible to melt until it is filled with the molten metal.
【手続補正１０】[Procedure Amendment 10]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２２[Name of item to be corrected] 0022
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２２】ところで、溶融処理方法においては、断熱
材やコンクリート等の金属以外の雑固体廃棄物だけを溶
融固化させると、固化物中にＣｏやＦｅ、Ｎｉ等の核種
金属が点状に集中して固化してしまうため、充填固化し
たドラム缶の放射能のレベルを測定するときレベル測定
が困難になるという問題点がある。By the way, in the melting treatment method, when only miscellaneous solid wastes other than metals such as heat insulating materials and concrete are melted and solidified, nuclide metals such as Co, Fe and Ni are concentrated in dots in the solidified material. When the level of radioactivity of the filled and solidified drum can is measured, the level measurement becomes difficult.
【手続補正１１】[Procedure Amendment 11]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２３[Name of item to be corrected] 0023
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２３】これに対して、上記溶融処理方法によれ
ば、金属廃棄物及び金属以外の廃棄物をそれぞれ投入し
て溶融し、固化物中にある程度の割合だけ金属層及びセ
ラミック層を形成するようにしているので、固化物中に
ＣｏやＦｅ、Ｎｉ等の核種金属が均一に分布するように
なり、又Ｃｓ等はセラミック層に均一に分布するように
なり、固化物が好ましい形態となる。従って、放射能の
レベル測定が容易になる。On the other hand, according to the above-mentioned melting treatment method, the metal waste and the waste other than the metal are respectively charged and melted so that the metal layer and the ceramic layer are formed in the solidified material to some extent. Therefore, nuclide metals such as Co, Fe 2 and Ni are evenly distributed in the solidified product, and Cs and the like are uniformly distributed in the ceramic layer, and the solidified product is a preferred form. Therefore, it becomes easy to measure the level of radioactivity.
【手続補正１２】[Procedure Amendment 12]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２６[Correction target item name] 0026
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２６】そして、炉本体２を加熱し、最初に、上記
三つのグループのうちの低沸点物質を含んだ雑固体廃棄
物を、廃棄物投入口１６を介して溶融用容器１４内に投
入して焼却溶融させる。ここで、低沸点物質を含んだ雑
固体廃棄物の溶融が完了したら、検知装置１８の液面計
により、溶融用容器１４内に貯留されている溶融湯の湯
面の位置を検出する。そして、この検出した湯面の位置
と、低沸点物質を含まない雑固体廃棄物の比重とに基づ
いて、溶融用容器１４内に投入可能な雑固体廃棄物の重
量を演算する。尚、低沸点物質を含まない雑固体廃棄物
は、廃棄物の種類に応じてその比重がだいだいわかって
いる。Then, the furnace main body 2 is heated, and first, the miscellaneous solid waste containing the low boiling point substance of the above three groups is charged into the melting vessel 14 through the waste charging port 16. Incinerate and melt. Here, when the melting of the miscellaneous solid waste containing the low boiling point substance is completed, the position of the molten metal surface stored in the melting container 14 is detected by the liquid level gauge of the detection device 18. Then, the weight of the miscellaneous solid waste that can be put into the melting container 14 is calculated based on the detected position of the molten metal surface and the specific gravity of the miscellaneous solid waste containing no low boiling point substance. It should be noted that the specific gravity of miscellaneous solid waste that does not contain low-boiling substances depends largely on the type of waste.
【手続補正１３】[Procedure Amendment 13]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２７[Name of item to be corrected] 0027
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２７】この後、低沸点物質を含まない雑固体廃棄
物を前記演算した重量だけ溶融用容器１４内に投入して
溶融させる。この場合、低沸点物質を含まない雑固体廃
棄物のうちの金属以外の雑固体廃棄物を、先に、溶融用
容器１４内に投入して溶融させ、続いて、低沸点物質を
含まない雑固体廃棄物のうちの金属廃棄物を溶融用容器
１４内に投入して溶融させる。この結果、溶融用容器１
４内に溶融湯が所定量一杯まで溜る。この後の冷却固化
作業及びドラム缶への充填作業は、前記第１の溶融処理
方法と同様にして行う。Thereafter, the miscellaneous solid waste containing no low boiling point substance is put into the melting vessel 14 and melted by the calculated weight. In this case, the miscellaneous solid wastes other than the metal among the miscellaneous solid wastes not containing the low boiling point substance are first charged into the melting vessel 14 to be melted, and subsequently, the miscellaneous solid wastes not containing the low boiling point substance are mixed. Metal waste of the solid waste is put into the melting container 14 and melted. As a result, the melting container 1
The molten metal is accumulated in 4 in a predetermined amount . The subsequent cooling and solidifying work and the filling work into the drum can are performed in the same manner as the first melting treatment method.
【手続補正１４】[Procedure Amendment 14]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２８[Correction target item name] 0028
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２８】このような第２の溶融処理方法において
も、第１の溶融処理方法と同様な作用効果を得ることが
できる。加えて、第２の溶融処理方法によれば、溶融湯
の湯面の位置を検出し、この検出した湯面の位置と低沸
点物質を含まない雑固体廃棄物の比重とに基づいて溶融
用容器１４内に投入可能な雑固体廃棄物の重量を演算
し、そして、低沸点物質を含まない雑固体廃棄物を演算
した重量だけ投入するので、溶融物が溶融用容器１４内
に過不足なく一杯になるまで溶融させることができる。In the second melt processing method as described above, it is possible to obtain the same effect as that of the first melt processing method. In addition, according to the second melting treatment method, the position of the surface of the molten metal is detected, and based on the detected position of the molten metal and the specific gravity of the miscellaneous solid waste containing no low boiling point substance, Since the weight of miscellaneous solid waste that can be charged into the container 14 is calculated, and only the calculated weight of miscellaneous solid waste that does not contain a low boiling point substance is charged, the melt does not have an excess or deficiency in the melting container 14. it can be melted to a Ku full.
【手続補正１５】[Procedure Amendment 15]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２９[Name of item to be corrected] 0029
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２９】尚、上記第２の溶融処理方法においては、
低沸点物質を含んだ雑固体廃棄物を溶融させた後の時点
で、溶融湯の湯面の位置を検出したが、これに代えて、
低沸点物質を含んだ雑固体廃棄物を最初に焼却溶融さ
せ、続いて、低沸点物質を含まない雑固体廃棄物のうち
の金属以外の雑固体廃棄物を溶融させた後の時点で、溶
融湯の湯面の位置を検出し、この検出した湯面の位置
と、金属廃棄物（低沸点金属を含まないもの）の比重と
に基づいて、溶融用容器１４内に投入可能な金属廃棄物
の重量を演算し、この後、金属廃棄物を演算した重量だ
け投入するようにしても良い。この溶融処理方法におい
ても、上記第２の溶融処理方法とほぼ同一の効果を得る
ことができるが、この場合、特に、比重が明確にわかる
金属廃棄物の投入重量だけを演算するので、演算結果の
精度がより一層高くなり、溶融物を溶融用容器１４内に
一層過不足なく一杯になるまで正確に溶融させることが
可能になる。In the second melt processing method,
At the time after melting the miscellaneous solid waste containing low-boiling substances, the position of the molten metal surface was detected, but instead of this,
The miscellaneous solid waste containing low-boiling substances is first incinerated and melted, and then the miscellaneous solid waste other than metals among the miscellaneous solid waste containing no low-boiling substances is melted. The position of the hot water surface is detected, and based on the detected hot water position and the specific gravity of the metal waste (which does not contain low-boiling metal), the metal waste that can be put into the melting vessel 14 The weight of the metal waste may be calculated, and then the metal waste may be added by the calculated weight. This melting treatment method can also obtain almost the same effect as the second melting treatment method, but in this case, in particular, since only the weight of the metal waste whose specific gravity is clearly known is calculated, the calculation result accuracy is further enhanced, and it becomes possible to accurately melt the melt until a more excess or deficiency of Ku full the melting vessel 14.
【手続補正１６】[Procedure Amendment 16]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３０[Name of item to be corrected] 0030
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００３０】さて、第３の溶融処理方法について説明す
る。この方法においても、まず、溶融作業を行う前に、
放射性の雑固体廃棄物を、三つのグループ、即ち、低沸
点物質を含んだ雑固体廃棄物、金属以外の雑固体廃棄
物、金属廃棄物（低沸点金属を含まないもの）に分別す
る。そして、炉本体２を加熱し、上記三つのグループの
うちの一つのグループを任意に選んで投入する。次に、
三つのグループのうちの他のグループを追加投入する
際、その追加投入するグループが、低沸点物質を含んだ
雑固体廃棄物である場合には、前に投入されているグル
ープの廃棄物が溶融用容器１４内の溶融湯の湯面を覆っ
ている状態（湯面が露出していない状態）で、追加投入
して溶融させるようにする。 Now, the third melting treatment method will be described. Also in this method, first, before performing the melting operation,
Radioactive miscellaneous solid wastes are separated into three groups: miscellaneous solid wastes containing low-boiling substances, miscellaneous solid wastes other than metals, and metal wastes (not containing low-boiling metals). Then, the furnace body 2 is heated, and one of the above three groups is arbitrarily selected and introduced. next,
When another group out of the three groups is added, if the added group is miscellaneous solid waste containing low boiling point substances, the waste of the group previously put in is melted. In a state in which the surface of the molten metal in the container 14 is covered (state where the molten metal surface is not exposed), additional charging is performed to melt the molten metal .
【手続補正１７】[Procedure Amendment 17]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３２[Name of item to be corrected] 0032
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００３２】上記第３の溶融処理方法によれば、低沸点
物質を含んだ雑固体廃棄物を追加投入する場合、溶融用
容器１４内の溶融湯の湯面が雑固体廃棄物で覆われてい
る状態（湯面が露出していない状態）で、投入して溶融
させるようにしたので、湯面の上で低沸点物質が溶融し
て蒸発するようになり、高温の溶融湯中に低沸点物質が
入ることがなくなる。このため、溶融湯面の一時的な上
昇がなくなり、従って、第３の溶融処理方法において
も、第１の溶融処理方法と同様な作用効果を得ることが
できる。According to the third melting treatment method, when the miscellaneous solid waste containing the low boiling point substance is additionally charged, the molten metal surface in the melting vessel 14 is covered with the miscellaneous solid waste. Since the substance with a low boiling point is melted and evaporated on the surface of the molten metal, the substance with a low boiling point is melted and evaporated on the surface of the molten metal while the molten metal has a low boiling point. The substance will not enter. Therefore, temporary top of the molten bath level
Temperature is eliminated, thus, also in the third melt processing methods, it is possible to obtain the same effect as the first melting treatment method.
【手続補正１８】[Procedure 18]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３４[Correction target item name] 0034
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００３４】[0034]
【発明の効果】本発明は以上の説明から明らかなよう
に、固体廃棄物を低沸点物質を含んだ固体廃棄物とそれ
以外の固体廃棄物とに分別し、溶融用容器内に先に低沸
点物質を含んだ固体廃棄物を投入して溶融させるように
したので、多量の低沸点物質を前処理除去することなく
処理でき、且つ、溶融湯面のコントロールが容易に可能
という優れた効果を奏する。As is apparent from the above description, the present invention separates solid waste into solid waste containing low-boiling substances and other solid waste, and first separates the solid waste into the melting vessel. Since solid waste containing boiling point substances was put in and melted, a large amount of low boiling point substances were not removed by pretreatment.
It has an excellent effect that it can be processed and the molten molten metal surface can be easily controlled.
【手続補正１９】[Procedure Amendment 19]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３５[Correction target item name] 0035
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００３５】また、上記したように溶融用容器内に先に
低沸点物質を含んだ固体廃棄物を投入して溶融させた
後、溶融用容器内に貯留されている溶融湯の湯面の位置
を検出し、この検出した湯面の位置と低沸点物質を含ま
ない固体廃棄物の比重とに基づいて溶融用容器内に投入
可能な該固体廃棄物の重量を演算し、演算した重量だけ
低沸点物質を含まない固体廃棄物を投入するようにした
ので、溶融用容器内を溶融物で一杯になるように溶融さ
せることができる。Further, as described above, after the solid waste containing the low-boiling substance is first charged into the melting container and melted, the position of the molten metal surface stored in the melting container Is detected, and the weight of the solid waste that can be put into the melting vessel is calculated based on the detected position of the molten metal surface and the specific gravity of the solid waste that does not contain the low boiling point substance. since so as to put the solid waste free of boilers can be melted to be filled with melt for melting vessel.
Claims (2)
融させる廃棄物の溶融処理方法において、 前記固体廃棄物を低沸点物質を含んだ固体廃棄物とそれ
以外の固体廃棄物とに分別し、 前記溶融用容器内に先に前記低沸点物質を含んだ固体廃
棄物を投入して焼却溶融させるようにしたことを特徴と
する廃棄物の溶融処理方法。1. A method for melting and treating a solid waste by charging the solid waste into a melting vessel to melt the solid waste into a solid waste containing a low boiling point substance and other solid waste. A method for melting treatment of waste, characterized in that the solid waste containing the low-boiling substance is first charged into the melting container and incinerated and melted.
却溶融させる廃棄物の溶融処理方法において、 固体廃棄物を低沸点物質を含んだ固体廃棄物とそれ以外
の固体廃棄物とに分別し、さらにそれ以外の固体廃棄物
は金属と無機物に分別し、 前記溶融用容器内に先に前記低沸点物質を含んだ固体廃
棄物を投入して溶融させた後、 前記溶融用容器内に貯留されている溶融湯の湯面の位置
を検出し、 この検出した湯面の位置と、前記低沸点物質を含まない
固体廃棄物の比重とに基づいて前記溶融用容器内に投入
可能な該固体廃棄物の重量を演算し、 前記低沸点物質を含まない固体廃棄物を前記演算した重
量だけ投入するようにしたことを特徴とする廃棄物の溶
融処理方法。2. A method for melting waste, which comprises injecting solid waste into a melting vessel and incinerating and melting the solid waste into solid waste containing a low boiling point substance and solid waste other than the solid waste. Separation, and further solid waste other than that is separated into metal and inorganic matter, after the solid waste containing the low boiling point substance is previously charged into the melting container and melted, in the melting container The position of the molten metal stored in the molten metal is detected, and the molten metal can be charged into the melting container based on the detected position of the molten metal and the specific gravity of the solid waste containing no low boiling point substance. A melting treatment method for waste, wherein the weight of the solid waste is calculated, and the solid waste not containing the low boiling point substance is added by the calculated weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05059912A JP3096184B2 (en) | 1993-03-19 | 1993-03-19 | Waste melting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05059912A JP3096184B2 (en) | 1993-03-19 | 1993-03-19 | Waste melting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06273590A true JPH06273590A (en) | 1994-09-30 |
| JP3096184B2 JP3096184B2 (en) | 2000-10-10 |
Family
ID=13126816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05059912A Expired - Lifetime JP3096184B2 (en) | 1993-03-19 | 1993-03-19 | Waste melting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3096184B2 (en) |
-
1993
- 1993-03-19 JP JP05059912A patent/JP3096184B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3096184B2 (en) | 2000-10-10 |
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