Method of producing corrugated paper with straw

A technology for corrugated paper and straw, which is applied in the direction of pretreatment with acid compounds, can solve the problems of waste of resources, smoke, diffusion, etc., and achieve the effects of improving extraction rate, reducing environmental damage and reducing production costs.

Inactive Publication Date: 2015-09-23
ZHANGJIAGANG XINFA PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, due to the improvement of farmers' living standards, plant stalks are neither used for livestock feed nor for heating. A large number of corn stalks are burned during the autumn harvest season, which not only causes a huge waste of resources but also fills the air with smog, becoming a new environmental hazard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Treat 500g of rice straw into small pieces of 4-5cm and add them to the reactor, then add impregnated acid (20Wt.% sulfuric acid aqueous solution), hydrogen peroxide (20Wt.%) (mass ratio of soaked acid to hydrogen peroxide is 1:1 ) mixed aqueous solution (2000mL) into the reaction kettle, adjust the reaction temperature to 60°C, react for 10min, take out the straw from the reaction kettle, filter the straw taken out, remove the solution in the straw, use 2100mL concentration of 5Wt.% NaOH aqueous solution Wash the straw three times, and after washing, dry it naturally until the moisture content of the straw is less than 15Wt.%.

[0019] The liquid ratio is 1:5, and the highest temperature is 140°C for 40 minutes, and then sent to the refiner for refining treatment. The water intake is about 3.5L / min, the grinding distance of the first stage is 0.1mm, and the beating degree after refining is 16°sR; the grinding distance of the second stage is 0.08mm, and the beating degr...

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PUM

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Abstract

The invention discloses a method of producing corrugated paper with straw. The method includes the steps of preparing of raw materials, pretreatment of the straw, chemical pre-impregnating, primary hot grinding, tertiary hot grinding, screening, pulping, sheet making, and finishing. The short process is used in the production process, thus a washing and concentrating step is shortened and the pumping step is omitted. In the whole pulping process, power consumption is 10% lower than the power consumption for chemical pulps, water consumption is more than 70% higher than that for chemical pumps, boiling time is shorter, fuel consumption is decreased by 10% to 20%, the pulping rate is up to greater than 80%, and the production cost is lowered. On the basis of production of the high-strength corrugated paper, direct production cost of the paper is less than 1000 RMB per ton, and the economic benefit is excellent.

Description

technical field [0001] The invention relates to a method for preparing corrugated paper from straw, which belongs to the technical field of pulp and papermaking. Background technique [0002] Straw is the main by-product of crops, and it is also an important biological resource. my country is a large agricultural country, and the annual regeneration capacity of straw reaches 600 million tons. Corn stalks, sorghum stalks, cotton stalks and other crop stalks are used as plant raw materials. Due to their own defects such as many leaves and less skin, and the production troubles such as low yield after chemical cooking, corn stalks have been almost used since ancient times. Nothing to do with papermaking. In recent years, due to the improvement of farmers' living standards, plant stalks are neither used for livestock feed nor for heating. A large number of corn stalks are burned during the autumn harvest season, which not only causes a huge waste of resources but also fills the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/16D21C1/04
CPCD21B1/16D21C1/04
Inventor 王正刚
Owner ZHANGJIAGANG XINFA PACKING
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