JP2011021284A - Method for producing pulp by using non-woody material as raw material, and system apparatus for producing pulp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solution of problems wherein pulping of a non-woody material cannot be carried out when water is used after pretreatment, and when the water is not used, the raw material cannot be transported by the clogging of a communicating cylindrical body connecting the upmost cylindrical body through an intermediate cylindrical body to the downmost cylindrical body of a multistage pulp-producing machine by the raw material. <P>SOLUTION: The system apparatus for producing the pulp can continuously pulp the nonwoody material by passing the nonwoody material through a multistage pulp-producing machine 5 constituted as follows. The nonwoody material of the raw material is roughly crushed while washing the raw material by a roughly crushing pretreatment device 4 for carrying out stirring, cleaning, compression, dehydration and crushing of the nonwoody material of the raw material with water by the rotation of a rotary shaft 14 penetrating the cylindrical body. The pre-treated nonwoody material flows without the supply of the water between a plurality of the cylindrical bodies in a zigzag of from the right body through the left body to the right body. Polymer plates 16 are formed so as to be extended to sites avoiding a helical swirler group 1 of each cylindrical body at the upmost stage, the intermediate stage and the downmost stage, or a terminal part of a kneading blade 3 so as to cover the whole interiors of the first communicating cylindrical body 9 and the second communicating cylindrical body 11 connecting each of the cylindrical bodies 8, 10 and 13. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is based on non-wood that can significantly reduce the amount of water and chemicals used continuously, in a shorter time, at a lower cost by adding pretreatment in pulp production using non-wood as a raw material. The present invention relates to a pulp manufacturing method and a pulp manufacturing system apparatus.

  As a conventional technology, in order to remove impurities other than fibers and make pulp, a raw material containing impurities is put into a huge steam pot called a batch type, and processing such as boiling for a long time with a large amount of chemicals is performed to remove impurities. In the pre-treatment device of the pulp production system that uses raw wood as the raw material, and the raw material is made of non-wood, the raw material is made to flow through the cylinder, and a rotating shaft that penetrates the cylinder is provided. The rotary shaft has an independent driving device, and a spiral swirl blade group is attached, and a kneading blade provided with a crushing blade in an intersecting manner in the remaining portion is fitted in each block in a replaceable manner. Stirring, washing, compression, dehydration, heat generation, crushing, forcibly crushing with the rotation of the swirl blades and steam, and high heat generated by the mowing action. Washing the non-wood with a pre-treatment device that removes the pure material more efficiently and pulping it, then flows the pre-treated non-wood between the cylinders to flow, and each of the cylinders Each rotating shaft has an independent driving device, and a spiral swirl blade group is attached, and a kneading blade with a crushing blade crossed in the remaining portion is provided for each block. It is continuously and in a short time and at a low cost by introducing bleaching agent and performing bleaching through a multistage pulp manufacturing machine that is fitted in and replaceable with agitation, washing, compression, dehydration, heat generation and crushing There is a non-wood pulp production system apparatus (for example, see Patent Document 1) capable of pulping non-wood.

JP 2003-64587 A (refer to the claims section, detailed description section, and FIGS. 1 to 4)

However, in the above prior art, there is a time loss of boiling in a huge steam kettle for a long time, a problem such as a place where a large amount of processing cannot be performed without using a huge steam kettle, and a long time with a large amount of chemicals. There was a problem of treatment of the waste liquid generated by boiling.
In addition, if the raw material is non-wood such as rice, wheat, barley, rye, etc., reeds, bagasse, bamboo, hemp, kenaf, weeds that inhabit roads, leaves, garbage, sand, silica, etc. Since impurities other than fibers are present along with the soiling, it is necessary to remove the soiling of non-wood as a raw material without using chemicals while adding moisture. A non-wood as a raw material flows in the cylinder, and a rotating shaft that penetrates the cylinder is provided. The rotating shaft has an independent driving device, and a spiral swirl blade group is attached. A kneading blade with a crushing blade in a cross shape is inserted into each block, and exchangeable and exchangeable. Stirring, washing, compression, dehydration, heat generation, crushing are performed. Non-wood raw materials and caustic soda processed in a coarse pre-treatment device that generates high heat by forced crushing action, removing only moisture and dirt, and removing dirt in the next-stage multi-stage pulp making machine It was found that pulping was not possible when water was added.
Regarding the feed of raw materials in the apparatus, the communicating cylinder that connects the uppermost cylinder to the middle cylinder, and further the middle cylinder to the lowermost cylinder of the multistage pulp making machine is simply vertical or inclined, There is no mechanism for sending. As a result, it was found that the raw materials were actually jammed and could not be sent.
In view of such circumstances, the present invention attaches a spiral swirl group as a means for pulping non-wood raw materials to a rotating shaft that penetrates through the cylindrical body, and a rotating shaft in the remaining second half. The kneading blade provided with a crushing blade that is tilted at an appropriate angle with respect to the circumferential direction and alternately inverted one by one so as to be orthogonal to the rotation axis can be exchanged by inserting into each block. Add a small amount of caustic soda to the coarse pre-treatment device that performs stirring, washing, compression, dehydration, heat generation, crushing, and multistage pulp making machine that has multiple similar cylinders. It is an object of the present invention to provide a non-wood pulp manufacturing method and a pulp manufacturing system apparatus that can perform non-wood pulping at low cost in a short time.

The first aspect of the present invention capable of achieving the above object is a pulp system apparatus using non-wood as a raw material as described in claim 1, and is as follows.
Non-wood, which is a raw material, and water are poured into a cylinder so that it flows in the cylinder, and a rotating shaft that penetrates the cylinder is provided. The rotating shaft is provided with a drive device, and a spiral swirl blade group The kneading blade with crossed crushing blades in the remaining part is fitted in each block so that it can be replaced interchangeably, and the rotation of the rotating shaft stirs and cleans the non-wood raw material with water, Using a pretreatment device that performs compression, dehydration, heat generation, and crushing, the raw material of the non-wood is washed while being roughed, and then the pretreated non-wood is put into the cylinder without supplying water, and a plurality of cylinders Flowing through the body, for example, the uppermost, middle, and lowermost stages are made to flow in the right, left, right, and zigzags between the three cylinders of the uppermost, middle, and lowermost cylinders. A first communication cylinder and a second communication cylinder pair that connect the cylinders, A polymer plate is provided so as to cover the entire communication cylinder and the second communication cylinder, and the polymer plate is the end of the spiral swirl blade group or kneading blade of the uppermost, middle, and lowermost cylinders. The rotating shafts that pass through the plurality of cylinders have a drive unit, a spiral swirl blade group is attached, and a crushing blade is crossed in the remaining portion. Non-wood can be pulped continuously by introducing bleaching agent through a multi-stage pulp making machine with stirring, compression, dehydration, heat generation, and crushing, with the kneading blade installed in each block and exchangeably attached. It is a configuration.

The second aspect of the present invention capable of achieving the above object is a method for producing a pulp using non-wood as a raw material as described in claim 2, and is as follows.
In the pulp manufacturing method using non-wood as a raw material, non-wood as a raw material is introduced and flowed into a cylinder together with water, provided with a rotating shaft penetrating the cylinder, the rotating shaft includes a spiral swirl group, A kneading blade with a crushing blade in a cross shape is provided, and by rotating the rotating shaft inside the cylinder, the non-wood as a raw material is pretreated without agitation, washing, compression, dehydration, heat generation and crushing After that, the pretreated non-wood is allowed to flow in a right row, a left row, a right row, and a zigzag between a plurality of cylinders such as an upper cylinder, a middle cylinder, and a lower cylinder without supplying water. The upper, middle, and lower cylinders are connected to each other, and a polymer plate is provided so as to cover the entire communication cylinder, and the upper, middle, and lower cylinders are provided as polymer plates. The spiral swirl blade group or the end of the kneading blade should be extended to avoid it In addition, the raw material is prevented from getting tangled or clogged, and each rotating shaft passing through each of the plurality of cylinders has an independent driving device and is attached with a spiral swirl blade group, and further intersects with the remaining portion. A kneading blade with a crushing blade in the shape of a block is inserted into each block and exchangeably attached and passed through a multistage pulp manufacturing machine that performs stirring, compression, dehydration, heat generation, crushing, and further bleaching agent is added, It is the structure which can pulp wood.

Since the raw material which concerns on this invention has the structure as the said description, the pulp manufacturing method and pulp manufacturing system apparatus by a non-wood have the effect described below.
(1) A spiral swirling blade group and a crushing blade were provided while adding water to remove various impurities such as leaves, dust, sand and silica contained in non-wood raw materials and impurities other than fibers. The non-wood raw material removed by the coarse pretreatment device consisting of a kneading blade was found to be unable to be pulped while supplying water, so the spiral swirl blade group without supplying water, Pulp is made with a multistage pulp making machine that has a kneading blade with a crushing blade, but it solves the problem that the raw material becomes tangled and clogged by the communicating cylinder that connects the cylinders of each stage, and continuously It can be pulped.
(2) By using the present pulp manufacturing system apparatus including the pretreatment apparatus, it is possible to manufacture non-wood pulp having a higher quality than conventional non-wood pulp.
(3) The use of chemicals can be minimized, and accordingly, problems such as drainage treatment can be solved.
(4) It leads to downsizing of the pulp production system device and reduction of running cost.

It is a front view which shows the pre-processing apparatus for removing impurities other than a fiber from the non-wood which is the raw material of this invention. It is a front view which shows the structure of the rotating shaft which is the principal part of each step cylinder of the coarse pretreatment apparatus in FIG. 1 of this invention and the multistage pulp manufacturing machine in FIG. It is a side view which shows the structure which attached to the rotating shaft the kneading blade for every block incorporated in the rough pre-treatment apparatus and multistage pulp manufacturing machine of this invention. It is explanatory drawing of the pulp manufacturing system by the non-wood which is a raw material of this invention. It is an expanded sectional view which shows the state which covered the inner wall of the communicating cylinder which connects the raw material of each stage cylinder of the multistage pulp manufacturing machine of this invention with the polymer plate. It is a front view which shows one Example of the multistage pulp manufacturing machine of this invention. It is a side view of the multistage pulp manufacturing machine shown in FIG.

  Use non-wood such as rice, wheat, barley, rye, etc., collected directly from the production area, non-wood such as reeds, bagasse, bamboo, hemp, kenaf and weeds that live along the road. It needs to be removed. In the present invention, in order to remove impurities other than fibers together with dirt, a kneading blade provided with a crushing blade in a cross shape with a spiral swirl blade group while adding water is fitted into each block so as to be interchangeably attached to each block. It has a coarse pretreatment device that adds non-wood raw materials and stirs, cleans, compresses, dehydrates, generates heat, and crushes them in a fluidized manner, and removes impurities from this pretreatment device in multiple stages. It is thrown into the pulp making machine. This multi-stage pulp manufacturing machine is divided into multi-stage pulp manufacturing machines in order to consider compactness, and the non-wood put from the right side of the uppermost cylinder is processed and sent to the left side and transferred to the intermediate cylinder. The intermediate cylinder is moved from the left to the right, and similarly, the lowermost cylinder is moved from the right to the left, and the process is repeated while reversing. From the uppermost cylinder, the middle cylinder, and further from the middle cylinder A communicating cylinder for transferring the raw material to the lowermost cylinder is provided. In order to avoid the kneading blades provided with the spiral swirl blade group and crushing blades of each step cylinder in this communication tube, it is difficult to form a recess as much as possible. Covered with molecular plates can prevent tangling and clogging of raw materials, and after sending to a multi-stage pulp manufacturing machine that can be configured to shorten the pulp manufacturing process that conventionally required a long distance, A chemical method such as caustic soda is added for bleaching, and a production method and a pulp production system apparatus for producing pulp made of non-wood are obtained.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
First, a rough pretreatment apparatus for removing various impurities such as leaves, dust, sand, silica, and impurities other than fibers from non-wood, which is a raw material of the present invention, will be described in detail.
As a conventional method, a steam pot called a batch method is used, and a method of boiling non-wood with a large amount of chemicals in a kettle for a long time is employed.
However, since this method simmers in a kettle for a long time with a large amount of chemicals, a very concentrated drainage is produced during the treatment.

  Therefore, in the rough pretreatment device 4 of the present invention, the spiral swirl blade group 1 is attached to the rotating shaft that penetrates the cylinder while supplying water, and the circumferential direction of the rotating shaft is attached to the remaining second half portion. On the other hand, the kneading blade 3 provided with the crushing blades 2 that are tilted at an appropriate angle and alternately inverted one by one so as to be orthogonal to the rotation axis is fitted into each block in a replaceable manner. In order to perform stirring, washing, compression, dehydration, heat generation, and crushing in which the cylinder is made to flow, it is forcibly stirred by the spiral swirl blade group 1 and the kneading blade 3 while washing the supplied non-wood in the apparatus. Washed, compressed, dehydrated, exothermic, crushed. At this time, since non-wood generates heat due to friction, it does not require steaming steam for pulping that is used in the conventional batch method, and the chemicals such as alkali agents used at that time are one-fifteenth to fifteenth conventional. A small amount of chemicals removes dirt and impurities in a short time.

Next, the non-wood pulp manufacturing system apparatus to which the coarse pretreatment apparatus 4 is added will be described in detail.
In conventional pulp production such as non-wood, it is necessary to remove impurities other than fiber by boiling in a batch method for a long time, and to perform many processes necessary for pulp production using a huge system device, In order to manufacture pulp such as non-wood, a huge site and a large amount of running costs were required.
In addition, when pulping non-wood raw material pretreated by the coarse pretreatment apparatus with a multi-stage pulp manufacturing machine, which is the next step, it turns out that it cannot be pulped if water is supplied. did.

The reason is that the cylinders at each stage of the multistage pulp making machine are stirred in the cylinders by the kneading blade 3 provided with the spiral swirl blade group 1 and the crushing blade 2 in the same manner as the coarse pretreatment apparatus. , Compression, heat generation, crushing and transporting, but communicating cylinders that transport and communicate raw materials from the uppermost cylinder of each stage to the middle cylinder, and from the middle cylinder to the lowermost cylinder Is simply connected by a cylinder, and this cylinder is formed of a stainless steel cylinder, but it is not feeding water, so it clogs as if the raw material of non-wood is caught, and the next cylinder A phenomenon that is not transferred occurs.
For this reason, when various solutions were tried, it was found that, for example, vinyl-based resins and carbon-containing resins were all clogged with raw materials.
And in this invention, it succeeded in eliminating clogging by covering with the polymer plate 16 of the thickness which is easy to stick and is easy to form.
The affixing of the polymer plate 16 also does not interfere with the rotation of the blade from the vicinity of the blade cut 17 which is the end of the kneading blade 3 having the cylindrical spiral swirl blade group 1 and the crushing blade 2 at each stage. The clogging can be eliminated by being folded and covered on the entire communication cylinders 9 and 11 and the cylinders 8, 10, and 13 at each stage so as not to form a recess as much as possible.
By adopting such a configuration, the pulp production system apparatus of the present invention removes dirt other than non-wood and impurities other than fibers by the coarse pretreatment apparatus 4 of the present invention, and has a multi-stage cylinder. Multi-stage pulp that stirs, compresses, dehydrates, generates heat, and crushes with repeated inversions, such as pumping the left side while processing non-wood put in from the right side and pumping the discharged material from left to right By using the manufacturing machine 5, non-wood pulp with higher quality than conventional non-wood pulp can be produced, and the use of chemicals can be minimized. This solves the problem of downsizing the pulp manufacturing system and reducing running costs.

  The pulp manufacturing system apparatus according to an embodiment of the present invention will be described in detail. The pulp manufacturing system apparatus is composed of three cylinders arranged so as to have a substantially triangular shape when viewed from the side, and is sent by a coarse pretreatment apparatus. The wood raw material is fed from the raw material inlet 7 of the uppermost cylinder 8. The three cylinders include a first communicating cylinder 9 that communicates with the uppermost cylinder 8 on the opposite side of the raw material inlet 7 of the uppermost cylinder 8 provided with a raw material inlet 7 at one end, The first communicating cylinder 9 is connected to one end of the middle cylinder 10 and further communicated with the lowermost cylinder 13 on the side opposite to the first communicating cylinder 9 communicating with the middle cylinder 10. The second communicating cylinder 11 is provided, the second communicating cylinder 11 is connected to one end of the lowermost cylinder 13, and the product discharge port 12 is the second communicating cylinder 11 of the lowermost cylinder 13. It is provided on the opposite side. When the communicating cylinders 9 and 11 of the cylinders 8, 10 and 13 flow from the uppermost cylinder 8 to the middle cylinder 10 and from the middle cylinder 10 to the lowermost cylinder 13, the flow direction is reversed each time. Will do. Rotating shafts 14 penetrating through the cylinders 8, 10 and 13 are provided so as to be rotationally driven by independent driving devices 5 (for example, a geared motor or the like). In addition, the arrangement of the cylinders 8, 10, 13 is not limited to that shown in the figure when viewed from the side, but it may be vertically arranged, equilateral triangles, horizontally arranged horizontally, It goes without saying that various design changes can be made due to the arrangement of the building and related equipment. Furthermore, it goes without saying that the raw material inlet 1, the communicating cylinders 9 and 11, and the product outlet 12 can be appropriately arranged in consideration of efficiency. A plurality of cylinders can be selected as appropriate, and by using the multistage pulp making machine 5, raw materials such as non-wood generate heat due to friction, so that steaming for pulping is not necessary, and it is cheaper. Pulp can be produced.

  Finally, the pulp contains a substance such as an adhesive that connects the fibers with fibers such as lignin. This lignin will eventually color the pulp, stiffen the fibers and lose hydration. Therefore, in order to remove it, it is a pulp production system apparatus in which the pulp is completed by stirring with a spiral swirl blade group and further bleaching white by adding ozone and caustic soda when passing through the bleaching cylinder 6.

  Pulp can be produced using not only non-wood raw materials but also ordinary papermaking materials.

DESCRIPTION OF SYMBOLS 1 .... Spiral swirl blade group 2 .... Crushing blade 3 .... Kneading blade 4 .... Coarse-free pretreatment device 5 .... Multi-stage pulp making machine 6 ...・ Stirring and bleaching cylinder 7... Raw material inlet 8... Uppermost cylinder 9... First communication cylinder 10. 12... Product discharge port 13... Bottom cylinder 14... Rotating shaft 15... Drive device 16.

Claims (2)

Non-wood and water, which are raw materials, are charged into a cylinder, the raw material flows in the cylinder, a rotating shaft that penetrates the cylinder is provided, the rotating shaft is provided with a drive device, and a spiral swirl Attach approximately half of the group, and incline at the remaining second half part by tilting at an appropriate angle with respect to the circumferential direction of the rotating shaft and by alternately inverting each other so as to be orthogonal to the rotating shaft. A kneading blade with a crushing blade in the shape of a block is fitted into each block so that it can be exchanged, and by rotating the rotating shaft, the raw material non-wood is agitated, washed, compressed, dehydrated, heated, and crushed with water By washing the raw material of the non-wood by the apparatus, after that, the pretreated non-wood is thrown into the cylinder without supplying water, and flows in a plurality of cylinders, for example, the uppermost cylinder, The middle cylinder and the bottom cylinder The first communication cylinder and the second communication cylinder connecting the uppermost, middle, and lowermost cylinders so that the bodies flow in a zigzag manner to the right, left, and right. A polymer plate is provided so as to cover the entire communication cylinder and the second communication cylinder, and the polymer plate is the end of the spiral swirl blade group or kneading blade of the uppermost, middle, and lowermost cylinders. The rotating shafts extending through the plurality of cylinders are provided with a drive device, a spiral swirl blade group is attached, and a crushing blade is crossed in the remaining portion. Through a multi-stage pulp production machine that performs stirring, compression, dehydration, heat generation, and crushing with a kneading blade installed in each block and installed in a replaceable manner, bleach is added and the raw material is pulped continuously from non-wood Non-wood pulp manufacturing system device characterized in that In the pulp manufacturing method using non-wood as a raw material, non-wood as a raw material is introduced and flowed into a cylinder together with water, provided with a rotating shaft penetrating the cylinder, the rotating shaft includes a spiral swirl group, A kneading blade with a crushing blade in a cross shape is provided, and by rotating the rotating shaft inside the cylinder, the non-wood as a raw material is pretreated without agitation, washing, compression, dehydration, heat generation and crushing After that, the pretreated non-wood is allowed to flow in the right, left, right, and zigzags between the multiple cylinders of the upper cylinder, the middle cylinder, and the lower cylinder without supplying water. The upper, middle and lower cylinders are connected to each other, and a polymer plate is provided so as to cover the entire inside of the communication cylinder, and the polymer plate is provided for each of the upper, middle and lower cylinders. By extending the spiral swirl wing group or the part avoiding the end of the kneading blade, Non-wood raw materials are prevented from getting tangled or clogged, and each rotating shaft passing through each of the plurality of cylinders has an independent driving device, and a spiral swirl group is attached, and the remaining portion A kneading blade with a crushing blade in the shape of a cross is inserted into each block, and is exchangeably attached and passed through a multistage pulp manufacturing machine that performs stirring, compression, dehydration, heat generation, crushing, and bleaching agent is added. A pulp production method using non-wood as a raw material, characterized in that non-wood pulping can be performed.

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