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Pulping paper-making method using hybrid chinese pennisetum as raw material and product

A hybrid pennisetum, pulping and papermaking technology, applied in pulp beating/refining methods, papermaking, papermaking machines, etc., can solve problems such as increasing profits and shortage of raw materials, and achieve improved product quality, reduced energy consumption, and good dehydration Effect

Inactive Publication Date: 2010-01-20
王洪宾
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the contradictions existing in the field of papermaking and the deficiencies of the prior art, the purpose of the present invention is to provide a pulping and papermaking method using hybrid pennisetum as raw material, which is simple and easy to implement, and can solve the problem of raw material shortage, reduce Reduce energy consumption, increase profitability and at the same time improve paper and board quality

Method used

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  • Pulping paper-making method using hybrid chinese pennisetum as raw material and product
  • Pulping paper-making method using hybrid chinese pennisetum as raw material and product
  • Pulping paper-making method using hybrid chinese pennisetum as raw material and product

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Raw material preparation: air-dry the hybrid pennisetum, press rollers through the grass catcher;

[0047] (2) Grass cutting: cut into grass pieces by a grass cutter;

[0048] (3) Transmission dust removal;

[0049] (4) Pot loading: average loading 25m 3 steamed ball;

[0050] (5) Cooking: at a temperature of 160°C, the amount of ammonium used for cooking is 12% of the absolute dry raw material, the amount of free ammonia is 1.5% of the absolute dry raw material, the liquid ratio is 1:8, and the holding time is 1h for cooking. Water is used as dilute black liquor preheated to 60°C, and the pulping yield of hybrid pennisetum is 65.1%;

[0051] (6) Squeezing: After cooking, the full-pressure spraying is adopted, and the slurry is extracted from the cooking residue through two series-connected double-roller squeezers. The pulp from the first squeezer is diluted with dilute black liquor and processed. After stirring, enter the second pulping machine for pulping;

...

Embodiment 2

[0056] Same as step in embodiment 1, just the temperature in step (5) is replaced by 165 ℃, the ammonium consumption of cooking is replaced by 14% to absolute dry raw material, and free ammonia consumption is replaced by to absolute dry raw material 1.55%, liquid ratio Replaced with 1:5, and the holding time was replaced with 2h.

[0057] After measurement, the ring pressure index of the finished paper is 18.29N.m 2 / g, the breaking length is 6.56km, and the folding endurance is 8 times. All the indicators are in line with the national standard requirements of high-strength corrugated base paper.

Embodiment 3

[0059] Same as the steps in Example 1, only the temperature in step (5) is replaced by 170°C, the amount of ammonium cooked is replaced by 16% of the absolute dry raw material, and the amount of free ammonia is replaced by 2.0% of the absolute dry raw material, the liquid ratio Replaced with 1:2.3, and the holding time was replaced with 1.5h.

[0060] After measurement, the ring pressure index of the finished paper is 17.34N.m 2 / g, the breaking length is 6.82km, and the folding endurance is 6 times. All the indicators are in line with the national standard requirements of high-strength corrugated base paper.

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Abstract

The present invention belongs to the field of papermaking technology, and is especially papermaking process with hybrid Chinese peunisetum as raw material. Hybrid Chinese peunisetum may be used as raw material to produce various kinds of paper and card board products through pre-treatment, preparing material, cutting, steaming, grinding to form paper pulp, pulp sheet making, winding and other steps. The said process has saving in water and power, soft steamed pulp material, easy grinding, good pulp color, fast filtering and other advantages, and the paper products have high physical performance. Hybrid Chinese peunisetum may be planted with sewage and sludge from imine papermaking process directly and this is environment friendly.

Description

technical field [0001] The invention relates to a pulping and papermaking method and its product, in particular to a pulping and papermaking method using hybrid pennisetum as raw material and its product high-strength corrugated base paper. Background technique [0002] In recent years, my country's paper industry has developed rapidly, and it is one of the few industries in which consumption growth is greater than production growth. my country is a big country in the world for pulping and papermaking of non-wood fiber raw materials. More than 70% of the paper and cardboard produced in my country are made of non-wood fiber raw materials. The use of straw pulp for papermaking has a long history, mature technology, and numerous production equipment. In order to promote the paper industry Development played an important role. As the production and consumption of paper and cardboard continue to increase, the supply of pulp is decreasing day by day, relying heavily on imported ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C3/02D21B1/02D21B1/06D21D1/00D21F11/12
Inventor 王洪宾
Owner 王洪宾