JP2003064587A - Method for producing pulp by using nonwood as raw material and pulp production system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce high-quality non-wood pulp by using its production system through solving problems involving effluent liquid treatment as a result of cutting the amounts of chemicals to be used 1/10- to 1/15-fold. SOLUTION: This pulp production system works as follows: nonwood is smashed with a pretreatment unit 4 while washing, and then made to flow between a plurality of cylinders, and subsequently passed through a multistage pulp production machine, and then bleached by charging a bleaching agent, thus continuously pulping the nonwood in a short time at low cost; wherein the multistage pulp production machine for subjecting the nonwood to agitation, washing, compression, dewatering, heat generation and crushing includes rotating shafts penetrating through the plurality of respective cylinders, having respectively independent driving units and mounted with spirally turning blades 1, and further the rest of which is exchangeably mounted, in an engaged fashion, at each block, with kneading blades 3 provided crossedly with crushing blades.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a pulp production method using a raw material of non-wood, by continuously adding the pretreatment of the present invention to an existing production method, and for a shorter period of time.
The present invention relates to a non-wood pulp manufacturing method and a pulp manufacturing system apparatus that can reduce the amount of water used and the amount of chemicals used at low cost.

[0002]

2. Description of the Related Art As a conventional technique, in order to remove impurities other than fibers and pulp them, raw materials containing impurities are put in a huge steam pot called a batch system and boiled with a large amount of chemicals for a long time. There is a method of performing a treatment of removing impurities and pulping.

[0003]

However, in the above-mentioned prior art, there is a time loss of boiling for a long time in a huge steam pot, and a place where a large amount of treatment cannot be performed unless a huge steam pot is used. There was also a problem, that is, the treatment of waste liquid generated by boiling a large amount of chemicals for a long time.

In view of such circumstances, the present invention has a kneading blade provided with crushing blades intersecting with the spiral swirl vane group as means for removing impurities, and is fitted to each block in a replaceable manner. By adding a pretreatment device that makes the cylinder fluid, such as stirring, washing, compression, dehydration, heat generation, and crushing, it is possible to reduce the amount of chemicals and to pulp non-wood pulp in a short time and at low cost. An object of the present invention is to provide a non-wood pulp manufacturing method and a pulp manufacturing system device that can be used.

[0005]

The present invention is intended to solve the above-mentioned problems, and employs the following technical means. In the invention according to claim 1, in the pretreatment device of the pulp manufacturing system device in which the raw material is non-wood, the non-wood as a raw material is caused to flow in the cylindrical body, and a rotary shaft penetrating the cylindrical body is provided, The rotating shaft has an independent drive unit, a spiral swirl vane group is attached, and further, a kneading blade provided with crushing blades in a cross shape in the remaining part is fitted in each block and is agitated so that it can be exchanged. Cleaning, compression,
Dehydration, heat generation, crushing, rotation of swirl vanes and compulsive crushing action by using steam to generate high heat, and remove impurities other than fibers more efficiently with a small amount of chemicals to pulp. The technical means of being able to do is adopted.

In a second aspect of the present invention, in a pulp manufacturing system device in which the raw material is non-wood, the pre-treatment device according to the first aspect of the present invention is used to wash the non-wood while thereafter performing a plurality of pre-treated non-wood. The rotating shafts that flow between the cylinders of the plurality of cylinders and penetrate through the plurality of cylinders are provided, and each of the rotating shafts has an independent driving device, and a spiral swirl vane group is attached to the rotary shafts. The kneading blades with crossing crushing blades are inserted into each block in a replaceable manner, and the bleaching agent is passed through a multi-stage pulp making machine that performs stirring, washing, compression, dehydration, heat generation, and crushing. By introducing and bleaching, we adopted the technical means that non-wood pulping can be continuously and inexpensively performed in a short time.

According to the third aspect of the present invention, in the method for producing pulp using non-wood as a raw material, the non-wood as a raw material is caused to flow in a tubular body, and a rotary shaft penetrating the tubular body is provided. A spiral swirl blade group and a kneading blade provided with a crushing blade in a cross shape are attached to the, and by rotating the rotary shaft in the cylinder, the non-wood raw material is stirred, washed, compressed, dehydrated, Pre-treatment of heat generation and crushing is performed, and then the pre-treated non-wood flows and flows between a plurality of cylinders, and each rotation shaft that penetrates each of the plurality of cylinders is provided, and each rotation is performed. The shaft has independent drive units, spiral swirl blades are attached, and kneading blades with crossing crushing blades are attached to the rest of each block so that they can be exchanged by agitating and washing. Multi-stage system that performs compression, dehydration, heat generation, and crushing Through pulp manufacturing machine, further stirring hydrogen peroxide, provided the rotary shaft extending through the tubular body to introduce the caustic soda, the said rotary shaft having a helical swirler group,
We adopted the technical means that non-wood pulping can be performed by bleaching with a bleaching cylinder.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Since soiled rice, wheat, barley, rye, etc., such as straw, reeds, bagasse, bamboo, hemp, kenaf, etc., which have been directly collected from the production area, are used, stains are removed. Needs to be removed. According to the present invention, a cylinder body in which impurities other than fibers (pis in the present invention) along with dirt are rotatably attached to each block by fitting a kneading blade provided with a crushing blade in a cross shape with a spiral swirl vane group is flowed. In order to consider the compaction of the place, the non-wood with the impurities removed and sent to a pre-treatment device that performs stirring, washing, compression, dehydration, heat generation, and crushing, and a multi-stage pulp making machine are considered. The non-wood from the right side of the uppermost cylinder is processed and sent to the left side, and the discharged ones are moved from the left to the right of the intermediate cylinder, and further moved from the right to the left of the lowermost cylinder. , It is sent to a pulp making machine that can be configured to shorten the conventional pulp making process that requires a long distance by repeating the process, and after performing the treatment there, chemicals such as caustic soda are used for bleaching. In addition, a manufacturing method and pulp manufacturing system apparatus for producing pulp according to non-wood.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a front view showing a pretreatment apparatus for removing impurities other than fibers from non-wood, which is a raw material of the present invention, and FIG. 2 shows a structure of a rotary shaft which is a main part of the pretreatment apparatus in FIG. FIG. 4 is a front view, FIG. 3 is a side view showing a configuration in which a kneading blade for each block is attached to a rotary shaft, and FIG.
FIG. 3 is an explanatory diagram of a pulp manufacturing system using non-wood as a raw material.

First, a pretreatment apparatus for removing impurities (pis in the present invention) 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 method called a batch method in which a steam pot is used and non-wood is boiled in a pot for a long time with a large amount of chemicals is adopted. However, in this method, a large amount of chemicals is boiled in a kettle for a long time, so a very thick drainage liquid is produced during the process.

Therefore, in the pretreatment device 4 of the present invention, the kneading blade 3 having the crushing blade 2 intersecting with the spiral swirl vane group 1 is fitted in each block and is exchangeably attached to the cylindrical body to flow. In order to perform stirring, washing, compression, dehydration, heat generation, and crushing as described above, the input non-wood is forcibly stirred, washed, and compressed by the spiral swirl blade group 1 and the kneading blade 3 while washing in the apparatus. Dehydrated, heated, crushed. On this occasion,
Since non-wood generates heat due to friction, it does not require steaming steam for pulping that is used in the conventional batch system, and chemicals such as alkali agents used at that time are 1/10 to 1/5 of the conventional one. With a small amount of chemicals, impurities are removed in a short time to make pulp.

Next, the non-wood pulp manufacturing system device including the pretreatment device 4 will be described in detail. In the conventional pulp production of non-wood etc., it is necessary to first boil in a steam kettle for a long time to remove impurities other than fibers, and to perform many steps required for pulp production using a huge system device, In order to produce pulp such as non-wood,
It required a huge site and a lot of running costs.

However, in the pulp manufacturing system device of the present invention, impurities such as pis and the like other than non-wood fibers are removed by the pretreatment device 4 of the present invention.
Multistage pulp that performs stirring, washing, compression, dehydration, heat generation, and crushing while repeating inversion, such as processing non-wood put from the right side while pumping it to the left side and pumping discharged material from the left to the right. By using the manufacturing machine 5, non-wood pulp of higher quality than conventional non-wood pulp can be manufactured, and the use of chemicals can be minimized, which causes problems such as drainage treatment. As a result, the pulp manufacturing system apparatus can be made compact, the running cost can be reduced, and remarkable effects can be obtained.

Further, by using the multi-stage pulp making machine 5, the raw material such as non-wood generates heat due to friction, so that steam for steaming for pulping is not required, and the pulp can be produced at a lower cost.

Finally, the pulp contains fibers such as lignin and a substance such as an adhesive for connecting the fibers. This lignin results in a coloration of the pulp, stiffening of the fibers and loss of hydration. Therefore,
In order to remove it, when passing through the stirring and bleaching cylinder 6 having a spiral swirl vane group, ozone and caustic soda are added to bleach white to complete the pulp manufacturing system device.

[0016]

As a result of adopting the above configuration, the present invention provides
The following effects can be obtained. (1) The chemicals required to remove impurities other than non-wood fibers can be reduced to one tenth to one-fifteenth. (2) By using the present pulp manufacturing system device including the pretreatment device, non-wood pulp of higher quality than conventional non-wood pulp can be manufactured. (3) The use of chemicals can be minimized, and problems such as drainage treatment can be solved accordingly. (4) The pulp manufacturing system can be made compact and the running cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view showing a pretreatment apparatus for removing impurities other than fibers from non-wood, which is a raw material of the present invention.

FIG. 2 is a front view showing a structure of a rotary shaft which is a main part of the pretreatment device in FIG. 1 of the present invention.

FIG. 3 is a side view showing a configuration in which a kneading blade for each block is attached to a rotary shaft, which is incorporated in the pretreatment device of the present invention.

FIG. 4 is an explanatory diagram of a pulp manufacturing system using non-wood, which is a raw material of the present invention.

[Explanation of symbols]

1 ... spiral spiral blade group 2 ... crushing blade 3 ... kneading blade 4 ... pretreatment device 5 ... multistage pulp making machine 6 ... stirring
Bleaching cylinder

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 4L055 AA05 AA06 AA07 AB01 BA03                       BA05 BA11 BA12 BA15 BA20                       BA28 BA32 BB13 BB18 BB20                       CA02 CA03 CA04 CA23 CB06                       CB07 CB41 FA22

Claims (3)

[Claims] 1. A pretreatment apparatus for a pulp manufacturing system apparatus in which a raw material is a non-wood material, a non-wood material as a raw material is made to flow in a cylindrical body, and a rotary shaft penetrating the cylindrical body is provided, and the rotary shaft is independent. In addition to having a drive device of, a spiral swirl vane group is attached, and further, a kneading blade provided with crushing blades in a cross shape in the remaining part is fitted in each block and is exchangeably attached, stirring, washing, compression, Dehydration, fever,
Crushing is performed by rotating the swirl vanes and forcibly crushing by using steam as an auxiliary force to generate high heat and remove impurities other than fibers more efficiently with a small amount of chemicals to pulp. And pretreatment equipment. 2. In a pulp manufacturing system apparatus in which a raw material is non-wood, the non-wood is treated while being washed by the pretreatment apparatus according to claim 1, and then the pretreated non-wood is flowed between a plurality of cylinders. Each rotating shaft that flows and penetrates each of the plurality of cylinders is provided, each rotating shaft has an independent driving device, a spiral swirl vane group is attached, and further the remaining parts are crushed in a cross shape. A kneading blade equipped with a blade is fitted in each block so that it can be exchanged and agitated, washed,
It is characterized by being able to continuously, for a short time, inexpensively pulp pulp by bleaching by adding a bleaching agent through a multi-stage pulp making machine that performs compression, dehydration, heat generation, and crushing. Non-wood pulp manufacturing system equipment to be used. 3. A method for producing pulp using non-wood as a raw material, wherein non-wood as a raw material is caused to flow in a tubular body,
A rotary shaft that penetrates the cylinder is provided, and a spiral swirl vane group and a kneading blade provided with a crushing blade in a cross shape are attached to the rotary shaft, and the rotary shaft is rotated in the cylinder.
Pre-treatment of stirring, washing, compressing, dehydrating, heating, and crushing the non-wood as a raw material is performed, and then the pre-treated non-wood is flowed between a plurality of cylinders to flow, and each of the plurality of Each kneading blade is provided with each rotary shaft penetrating the cylinder, each rotary shaft has an independent drive device, a spiral swirl blade group is attached, and a crushing blade is provided in a cross shape on the remaining portion. Each block is a plug-in type that can be exchanged and installed through a multi-stage pulp making machine that performs stirring, washing, compression, dehydration, heat generation, and crushing, and a rotary shaft that penetrates the cylinder into which hydrogen peroxide and caustic soda are added , The rotating shaft is provided with a spiral swirl vane group, and is bleached by a stirring and bleaching cylinder.
A method for producing pulp using non-wood as a raw material, which is capable of pulping non-wood.