JPH0861650A - Ash cooling device for pulverized coal burning boiler - Google Patents
Ash cooling device for pulverized coal burning boilerInfo
- Publication number
- JPH0861650A JPH0861650A JP19826994A JP19826994A JPH0861650A JP H0861650 A JPH0861650 A JP H0861650A JP 19826994 A JP19826994 A JP 19826994A JP 19826994 A JP19826994 A JP 19826994A JP H0861650 A JPH0861650 A JP H0861650A
- Authority
- JP
- Japan
- Prior art keywords
- ash
- refrigerant
- pulverized coal
- turbine
- mixer
- 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.)
- Withdrawn
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 15
- 239000003245 coal Substances 0.000 title claims abstract description 7
- 239000003507 refrigerant Substances 0.000 claims abstract description 50
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000000725 suspension Substances 0.000 abstract description 6
- 239000002918 waste heat Substances 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 1
- 239000012159 carrier gas Substances 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Incineration Of Waste (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は微粉炭燃焼ボイラの灰処
理装置に適用される灰冷却装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ash cooling device applied to an ash processing device for a pulverized coal combustion boiler.
【０００２】[0002]
【従来の技術】図２は従来の灰処理装置の一例を示す系
統図である。図中（１）は灰搬送管、（２）は灰貯留装
置、（３）は上記灰搬送管（１）の途中に設置された熱
交換器、（４）は上記灰貯留装置（２）の入口に設置さ
れたフィルタをそれぞれ示す。2. Description of the Related Art FIG. 2 is a system diagram showing an example of a conventional ash processing apparatus. In the figure, (1) is an ash transport pipe, (2) is an ash storage device, (3) is a heat exchanger installed in the middle of the ash transport pipe (1), and (4) is the ash storage device (2). The filters installed at the entrance of each are shown.
【０００３】灰搬送管（１）内を搬送気体（１３）と共
に輸送される高温の燃焼灰（１１）は、熱交換器（３）
内を通過する際に冷媒（１２）との熱交換により冷却さ
れる。冷却された燃焼灰（１１）は灰貯留装置（２）の
入口に取り付けられたフィルタ（４）により搬送気体
（１３）と分離され灰貯留装置（２）に貯留される。The hot combustion ash (11), which is transported in the ash carrier pipe (1) together with the carrier gas (13), is used as a heat exchanger (3).
When passing through the inside, it is cooled by heat exchange with the refrigerant (12). The cooled combustion ash (11) is separated from the carrier gas (13) by the filter (4) attached to the inlet of the ash storage device (2) and stored in the ash storage device (2).
【０００４】[0004]
【発明が解決しようとする課題】前記従来の灰処理装置
には、次のような解決すべき課題があった。 １）灰と共に、これを搬送する搬送気体をも冷却するた
め、灰の冷却効率が低く装置が大規模になる。 ２）冷媒流量が多いと、熱交換器出入口における冷媒の
温度差が小さく、廃熱を利用できない。 ３）灰貯留装置の入口で搬送気体と灰を分離するフィル
タを設置する必要があり、装置が複雑・高価となる。 ４）灰貯留装置において粉塵飛散などの防止対策を講じ
なければならず、全体のシステムが複雑で高価となる。The conventional ash processing apparatus has the following problems to be solved. 1) Since the carrier gas for carrying the ash is cooled together with the ash, the cooling efficiency of the ash is low and the apparatus becomes large-scale. 2) When the flow rate of the refrigerant is large, the temperature difference between the refrigerant at the inlet and outlet of the heat exchanger is small and the waste heat cannot be used. 3) It is necessary to install a filter for separating carrier gas and ash at the inlet of the ash storage device, which makes the device complicated and expensive. 4) It is necessary to take measures to prevent dust scattering in the ash storage device, which makes the entire system complicated and expensive.
【０００５】[0005]
【課題を解決するための手段】本発明者は、前記従来の
課題を解決するために、微粉炭燃焼ボイラから灰貯留装
置に至る灰搬送管の途中に設けられ、燃焼灰と冷媒液と
を混合する冷媒混合器と、同冷媒混合器で発生した冷媒
蒸気により駆動されるタービンと、同タービンを出た冷
媒蒸気を冷却液化する復液器と、同復液器で液化された
冷媒液を上記冷媒混合器に送給する冷媒ポンプとを備え
たことを特徴とする微粉炭燃焼ボイラの灰冷却装置を提
案するものである。In order to solve the above-mentioned conventional problems, the inventor of the present invention provides a combustion ash and a refrigerant liquid in the middle of an ash carrier pipe from a pulverized coal combustion boiler to an ash storage device. Refrigerant mixer for mixing, turbine driven by refrigerant vapor generated in the refrigerant mixer, condenser for cooling and liquefying refrigerant vapor exiting the turbine, and refrigerant liquid liquefied in the condenser The present invention proposes an ash cooling device for a pulverized coal combustion boiler, which is provided with a refrigerant pump that feeds the refrigerant mixer.
【０００６】[0006]
【作用】本発明は前記の構成を有し、高温の燃焼灰を冷
媒混合器内で低温の冷媒液と直接接触させることによっ
て熱交換を行ない冷却するので、冷却効率が高い。また
熱交換の際の冷媒の相変化を利用してタービンを駆動す
るので、熱回収効率も向上する。そして燃焼灰と冷媒液
との混合により懸濁液が生成されるので、粉塵の飛散が
防止される。The present invention has the above-mentioned structure, and because the high temperature combustion ash is directly contacted with the low temperature refrigerant liquid in the refrigerant mixer for heat exchange and cooling, the cooling efficiency is high. Further, since the turbine is driven by utilizing the phase change of the refrigerant during heat exchange, the heat recovery efficiency is also improved. Then, since the suspension is generated by mixing the combustion ash and the refrigerant liquid, the scattering of dust is prevented.
【０００７】[0007]
【実施例】図１は本発明の一実施例の灰冷却装置および
排熱回収サイクルを示す系統図である。この図におい
て、（１）は灰搬送管、（２）は灰貯留装置、（５）は
上記灰搬送管（１）の途中に設置された冷媒混合器であ
る。（６）は上記冷媒混合器（５）、タービン（７）、
復液器（８）、冷媒ポンプ（９）および発電機（１０）
により構成される排熱回収サイクルである。FIG. 1 is a system diagram showing an ash cooling device and an exhaust heat recovery cycle according to an embodiment of the present invention. In this figure, (1) is an ash carrier pipe, (2) is an ash storage device, and (5) is a refrigerant mixer installed in the middle of the ash carrier pipe (1). (6) is the refrigerant mixer (5), turbine (7),
Condenser (8), refrigerant pump (9) and generator (10)
Is an exhaust heat recovery cycle constituted by
【０００８】灰搬送管（１）内を搬送気体（１３）によ
り搬送されてきた燃焼灰（１１）は、冷媒混合器（５）
に投入され、そこで冷媒液（１２）（例えば水）と混合
され冷却される。その際に冷媒（１２）の一部は気化し
て冷媒蒸気（１５）になる。冷媒蒸気はタービン（７）
に導かれて仕事をし、復液器（８）で冷却液化されたの
ち、冷媒ポンプ（９）により再び冷媒混合器（５）に戻
される。その際、タービン（７）に結合された発電機
（１０）により発電する。一方燃焼灰（１１）は冷媒液
（１２）との混合により冷却されて懸濁液（１４）を形
成し、灰貯留装置（２）へ至る。The combustion ash (11) carried by the carrier gas (13) in the ash carrier pipe (1) is a refrigerant mixer (5).
, And is mixed therewith with a refrigerant liquid (12) (for example, water) and cooled. At that time, a part of the refrigerant (12) is vaporized to become a refrigerant vapor (15). Refrigerant vapor is turbine (7)
After being liquefied by the condenser (8), it is returned to the refrigerant mixer (5) by the refrigerant pump (9). At that time, power is generated by a generator (10) coupled to the turbine (7). On the other hand, the combustion ash (11) is cooled by mixing with the refrigerant liquid (12) to form a suspension (14) and reaches the ash storage device (2).
【０００９】冷媒混合器（５）よりも下流では、燃焼灰
（１１）は冷媒液（１２）との懸濁液（１４）の状態で
あるため灰の飛散が防止できる。そしてこの懸濁液は液
体と同等の扱いができるので、灰貯留装置（２）で従来
のように灰とガスを分離する必要がなく、フィルタ設置
の必要がない。また冷媒混合器（５）内で発生した冷媒
蒸気内に少量でも灰が含まれていればそれを除去しなけ
ればならないが、その場合灰はしめった状態にあるか
ら、その分離には通常のボイラで用いられている水滴除
去用のコルゲートドライヤ（波状の板を重ねたもの）程
度のもので十分分離できる。Downstream of the refrigerant mixer (5), the combustion ash (11) is in a state of suspension (14) with the refrigerant liquid (12), so that the scattering of ash can be prevented. Since this suspension can be handled in the same manner as a liquid, it is not necessary to separate ash and gas in the ash storage device (2) as in the conventional case, and there is no need to install a filter. In addition, if a small amount of ash is contained in the refrigerant vapor generated in the refrigerant mixer (5), it must be removed. In that case, however, the ash is in a squeezed state, and therefore, it is usually separated. A corrugated drier for removing water droplets (a stack of corrugated plates) used in a boiler is sufficient for separation.
【００１０】本実施例では、高温の燃焼灰（１１）を低
温の冷媒（１２）に直接接触させて冷却するので、冷却
効率が高い。また、冷媒蒸気（１５）を発生させてター
ビン（７）を駆動するので、その出力分熱回収効率が向
上する。In this embodiment, the high temperature combustion ash (11) is brought into direct contact with the low temperature refrigerant (12) to cool it, so that the cooling efficiency is high. Further, since the refrigerant vapor (15) is generated to drive the turbine (7), the output heat recovery efficiency thereof is improved.
【００１１】[0011]
【発明の効果】本発明においては、従来の熱交換器の代
りに冷媒混合器を設置して、燃焼灰に冷媒液を混合し冷
却することにより、冷却効率を向上するとともに燃焼灰
の飛散を防止でき、また灰貯留装置の入口にフィルタ装
置を設ける必要が無くなり装置が簡素になる。更に冷媒
の相変化を利用したサイクルを併設することにより、廃
熱利用発電もできる。According to the present invention, a refrigerant mixer is installed in place of the conventional heat exchanger, and the cooling liquid is mixed with the cooling ash to cool it, thereby improving the cooling efficiency and scattering of the combustion ash. This can be prevented, and it is not necessary to provide a filter device at the inlet of the ash storage device, which simplifies the device. Further, by installing a cycle utilizing the phase change of the refrigerant, waste heat power generation can also be performed.
【図１】図１は本発明の一実施例の灰冷却装置および排
熱回収サイクルを示す系統図である。FIG. 1 is a system diagram showing an ash cooling device and an exhaust heat recovery cycle according to an embodiment of the present invention.
【図２】図２は従来の灰処理装置の一例を示す系統図で
ある。FIG. 2 is a system diagram showing an example of a conventional ash processing apparatus.
（１） 灰搬送管 （２） 灰貯留装置 （３） 熱交換器 （４） フィルタ （５） 冷媒混合器 （６） 排熱回収サイクル （７） タービン （８） 復液器 （９） 冷媒ポンプ （１０） 発電機 （１１） 燃焼灰 （１２） 冷媒（液） （１３） 搬送気体 （１４） 灰・冷媒懸濁液 （１５） 冷媒蒸気 （１６） 冷媒供給 (1) Ash transport pipe (2) Ash storage device (3) Heat exchanger (4) Filter (5) Refrigerant mixer (6) Exhaust heat recovery cycle (7) Turbine (8) Condenser (9) Refrigerant pump (10) Generator (11) Combustion ash (12) Refrigerant (liquid) (13) Carrier gas (14) Ash / refrigerant suspension (15) Refrigerant vapor (16) Refrigerant supply
Claims (1)
灰搬送管の途中に設けられ、燃焼灰と冷媒液とを混合す
る冷媒混合器と、同冷媒混合器で発生した冷媒蒸気によ
り駆動されるタービンと、同タービンを出た冷媒蒸気を
冷却液化する復液器と、同復液器で液化された冷媒液を
上記冷媒混合器に送給する冷媒ポンプとを備えたことを
特徴とする微粉炭燃焼ボイラの灰冷却装置。1. A refrigerant mixer for mixing combustion ash and a refrigerant liquid, which is provided in the middle of an ash carrier pipe from a pulverized coal combustion boiler to an ash storage device, and is driven by a refrigerant vapor generated in the refrigerant mixer. A turbine, a condenser for cooling and liquefying the refrigerant vapor discharged from the turbine, and a refrigerant pump for feeding the refrigerant liquid liquefied by the condenser to the refrigerant mixer. Ash cooler for pulverized coal combustion boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19826994A JPH0861650A (en) | 1994-08-23 | 1994-08-23 | Ash cooling device for pulverized coal burning boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19826994A JPH0861650A (en) | 1994-08-23 | 1994-08-23 | Ash cooling device for pulverized coal burning boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0861650A true JPH0861650A (en) | 1996-03-08 |
Family
ID=16388331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19826994A Withdrawn JPH0861650A (en) | 1994-08-23 | 1994-08-23 | Ash cooling device for pulverized coal burning boiler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0861650A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7044885B2 (en) | 2004-03-05 | 2006-05-16 | Ford Global Technologies, Llc | Engine system and method for enabling cylinder deactivation |
-
1994
- 1994-08-23 JP JP19826994A patent/JPH0861650A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7044885B2 (en) | 2004-03-05 | 2006-05-16 | Ford Global Technologies, Llc | Engine system and method for enabling cylinder deactivation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20011106 |