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Dry feed preparation method for grass material

A technology for grasses and raw materials, which is applied to the field of dry preparation systems for grasses raw materials, can solve problems such as prolonging cooking time, cooking liquid consumption, increasing production costs, etc., and achieves shortening cooking time, lowering production costs, Dust reduction effect

Active Publication Date: 2008-01-09
SHANDONG FUYIN PAPER & ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that there are following deficiencies in the material preparation method of the above-mentioned prior art: (1) after dry material preparation, the grass raw material cooking liquid sent to the digester is not easy to penetrate into the inside of the grass raw material, which will cause cooking. (2) This material preparation method only separates heavier impurities such as sand and grains and lighter impurities such as fine dust, and can not be used for impurities such as wheat bran in the raw material that can consume the cooking agent in the cooking process. Very good removal, thus causing the consumption of cooking liquid in the subsequent cooking process, prolonging the cooking time and increasing the production cost of the enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The wheat straw raw material removes the leaves, ears, and rotten parts in the forage, and the wheat straw raw material with a length of 300-500mm enters from the entrance of the hammer crusher at a feeding speed of 0.8m / s through a belt conveyor. The speed of the machine is 500rpm. When the raw materials enter the hammer crusher, they are cut and kneaded, and the wheat straw raw materials with a length of 20-40mm are discharged from the outlet of the hammer crusher. The hammer crusher is a hammer crusher for ore dressing or bark in the prior art. The wheat straw raw material discharged from the hammer crusher enters the cyclone dust collector, and the air volume is 30000m 3 / h, dust removal treatment is carried out under the condition of wind pressure of 200mm water column. The wheat straw raw material coming out from the dust collector enters the cylinder sieve for screening. During screening, the rotation speed of the cylinder sieve is 19r / min, and the inclination a...

Embodiment 2

[0038] Remove the leaves, ears, and rotten parts of the straw raw material from the forage, and the straw raw material with a length of 500-800mm enters from the entrance of the hammer crusher with a feeding speed of 0.6m / s through a belt conveyor. The rotating speed is 600rpm. After the raw material enters the hammer crusher, after cutting and kneading, the straw raw material with a length of 30-50mm is discharged from the outlet of the hammer crusher. The hammer crusher is a hammer crusher used for ore dressing or bark in the prior art. The straw raw material discharged from the hammer crusher enters the cyclone dust collector, where the air volume is 35000m 3 / h, dust removal treatment is carried out under the condition of wind pressure of 220mm water column. The straw raw material coming out from the dedusting machine enters the cylinder sieve for screening. During screening, the cylinder sieve rotating speed is 20r / min, and the inclination angle is 10°. The cylindrical ...

Embodiment 3

[0040] The cotton stalk raw material with a length of 400-700mm enters from the entrance of the hammer crusher through a belt conveyor at a feeding speed of 0.5m / s. The speed of the hammer crusher is 700rpm. When the raw material enters the hammer crusher After cutting and kneading, the cotton stalk raw materials with a length of 25-35mm are discharged from the outlet of the hammer crusher. Described hammer crusher is the hammer crusher that bark pulverizes in the prior art. The cotton stalk raw material discharged from the hammer crusher enters the cyclone dust collector, and the air volume is 32000m 3 / h, dust removal treatment is carried out under the condition of wind pressure of 210mm water column. The cotton stalk raw material coming out of the dust collector enters the cylinder screen for screening. During screening, the cylinder screen rotates at 23r / min and the inclination angle is 12°. The cylindrical sieve is a double-layer cylindrical sieve used in the prior art ...

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Abstract

The invention supplies grass series material dry process stocking method. It includes the following steps: using hammer crusher to process the grass series material; dust collecting; sieving. The invention inducts manner crusher in dry process stock to match the process, which can shorten steam boiling time, liquor dosage, greatly increase slurry quality and yield.

Description

technical field [0001] The invention relates to a material preparation system in the papermaking industry, in particular to a dry method material preparation system for grass raw materials. Background technique [0002] The pulping of grass plant raw materials mainly uses the rods containing more cellulose, and others such as leaves, nodes, ears and sheaths contain a large number of thin-walled miscellaneous cells that have little use value for pulping and papermaking. The problems of high chemical consumption, large amount of waste, difficult pulp washing, low bleaching degree and easy yellowing are caused. In addition, the silt, dust and other impurities mixed in grass raw materials will also cause difficulties in pulping and papermaking and bring many adverse effects on paper quality. Therefore, the link of material preparation in grass pulping is very important. [0003] Material preparation methods According to the processing method, the preparation of grass raw mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/06B02C13/00B07B9/00B07B1/22B07B1/46
Inventor 李洪法陈松涛宋明信杨吉慧宋建军江春甫
Owner SHANDONG FUYIN PAPER & ENVIRONMENTAL PROTECTION TECH
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