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A physical pulse wall breaking pulping device

A pulse and physical technology, applied in fiber raw material treatment, water/steam pretreatment, textile and papermaking, etc., can solve the problems of large pollution and low pulp yield

Active Publication Date: 2021-03-26
北京嘉和坤泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional papermaking process is to process the papermaking raw materials through pulping, modulation, papermaking, processing and other main processing steps. Among them, pulping is the first step and the most critical step in papermaking. The pulping process is to remove the pulping raw materials. The process of lignin; the removal process is mainly divided into chemical pulping method, mechanical pulping method and semi-chemical pulping method. Chemical pulping method is the most widely used production method, which uses chemical liquid to use under high temperature conditions The lignin in the pulping raw material reacts with chemical reagents to produce water-soluble matter, which is separated from the fiber to form a slurry; the lye penetrates into the pulping raw material, and the lignin, starch, pectin, fat, resin and low molecular weight semi Cellulose will dissolve into the lye; chemical pulping retains the natural length of the fiber and removes most of the lignin, but the yield of the pulp is low, the pollution is large, and in the subsequent squeezing and washing process, there will be large amount of black liquor

Method used

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  • A physical pulse wall breaking pulping device

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preparation example Construction

[0067] The preparation method of the present invention will be further described in detail in conjunction with specific examples below. It should be understood that the following examples are only for illustrating and explaining the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

[0068] The experimental methods used in the following examples are conventional methods unless otherwise specified; the reagents and materials used in the following examples can be obtained from commercial sources unless otherwise specified.

Embodiment 1

[0070] Such as figure 1 As shown, the present embodiment provides a horizontal physical pulse broken wall pulping device, wherein the device has a shell 1, and the shell 1 has a cylindrical structure of anti-corrosion and anti-rust metal shell; along the axis of the shell 1 Direction, a feed port 2 is opened on the shell 1; an inner barrel 3 is set near the inner wall of the outer shell, the distance between the outer wall of the inner barrel 3 and the inner wall of the outer shell 1 is 10-20cm, and the inner barrel 3 The opening is set on the side where the feed inlet is located; the inner barrel wall is composed of a 10mm thick carbon steel sieve plate with multiple openings (the sieve hole is 3-5mm);

[0071] A rotating shaft 4 is arranged on the wall of the inner barrel close to the feed inlet, and the rotating shaft 4 drives the inner barrel 3 to rotate in the axial direction in the shell 1;

[0072] Along the axial direction of the inner bucket 3, a plurality of high-pr...

Embodiment 2

[0087] Using the device of the above-mentioned embodiment 1, the grass corn stalks are used as raw materials, and the impurities and dust in the raw materials are removed in the dedusting device by removing impurities and dust, and the raw materials are crushed into 1-5 cm sections in the material pulverizer. , Sieve and separate the broken material after crushing to obtain the raw material for pulping; send it into the inner barrel through the feed port through the air blowing or screw extrusion;

[0088] Since the raw material is not softened, the raw material is first softened, including the following steps:

[0089] a. Send 100kg of materials, 7kg of sodium hydroxide, 300kg of clear water or recycled water into the inner barrel, and use the heating unit of the device to heat to 100-120°C to soften; after softening for 30 minutes, use the gravity of the wastewater to pass the wastewater through The sieve holes on the sieve plate flow out of the device from the drain outlet ...

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Abstract

The invention provides a physical pulse wall-breaking pulping apparatus, and a use method of the pulping apparatus. According to the use of the physical pulse wall-breaking pulping apparatus, wall-breaking of pulping raw materials (such as straw, corn and other grass plants) can be realized by using the physical pulse technology without being softened or after being softened with a small amount ofan alkaline water, so that an input amount of an alkali is greatly reduced during the entire process, the alkalinity of a pulp material is reduced, and thereby the discharged wastewater can reach thedischarge standard after simple treatment, so that the pulping process and cost are saved. The physical pulse wall-breaking pulping apparatus is used for pulping of gramineous plant straws, the crudepulp yield is up to 99.45% or more, the treatment process of the physical pulse wall-breaking pulping apparatus has high automation and controllable degree, and thereby the manual operation steps aregreatly reduced.

Description

technical field [0001] The invention belongs to the technical field of pulping devices, in particular to a physical pulse wall breaking pulping device. Background technique [0002] The traditional papermaking process is to process the papermaking raw materials through pulping, modulation, papermaking, processing and other main processing steps. Among them, pulping is the first step and the most critical step in papermaking. The pulping process is to remove the pulping raw materials. The process of lignin; the removal process is mainly divided into chemical pulping method, mechanical pulping method and semi-chemical pulping method, chemical pulping method is the most widely used production method, which uses chemical liquid to use under high temperature conditions The lignin in the pulping raw material reacts with chemical reagents to produce water-soluble matter, which is separated from the fiber to form a slurry; the lye penetrates into the pulping raw material, and the li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21B1/30D21D5/06D21C1/02
CPCD21B1/30D21C1/02D21D5/06
Inventor 钱柏安王福涛钱文波
Owner 北京嘉和坤泰科技有限公司
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