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Process for manufacturing wheat straw pulp

A pulp and process technology, applied in the field of pulp preparation, can solve the problems of environmental pollution, waste of resources, unreasonable treatment methods, etc., and achieve the effect of overcoming destructiveness and good uniformity

Pending Publication Date: 2021-04-09
江西中竹生物质科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a big agricultural country in my country, the annual output of plant straw is 7×10 9 t, the annual output of rice straw is in the forefront. In traditional agriculture, most of the rice straw is disposed of by open burning. This method was once regarded as the main cause of air pollution and greenhouse effect, and it is unreasonable The processing method not only pollutes the environment, but also wastes good resources

Method used

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  • Process for manufacturing wheat straw pulp

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Effect test

Embodiment 1

[0026] The present embodiment provides a kind of technique of manufacturing wheat straw pulp, and it comprises the following steps:

[0027] The rice stalks are beaten into pulp by ultrasonic waves, and the rice stalks are made into pulp by ultrasonic waves in the ultrasonic reactor. The frequency of the ultrasonic ballast in the above-mentioned ultrasonic reactor is 25khz, and the beating time is 30s, and then sent to the hydraulic pulper. After diluting and stirring in the pulper, carry out fine grinding with a double-disk refiner, and adopt the above-mentioned double-disc refiner to refine the slurry to a degree of 38SR, a wet weight of 3g, and a whiteness of 40. The slag machine recycles the coarse slag to the hydraulic pulper for dilution and stirring, and then uses a pressure screen to screen out the good pulp, and then sends the good pulp to the pulping tank, and adds additives. The additives use tension agents and retention aids. Parts are 2.5 parts, and the weight par...

Embodiment 2

[0029] The present embodiment provides a kind of technique of manufacturing wheat straw pulp, and it comprises the following steps:

[0030] The rice stalks are beaten into pulp by ultrasonic waves, and the rice stalks are made into pulp by ultrasonic waves in the ultrasonic reactor. The frequency of the ultrasonic ballast in the above-mentioned ultrasonic reactor is 40khz, and the beating time is 60s. Then it is sent to the hydraulic pulper. After diluting and stirring in the pulper, carry out fine grinding with a double-disc refiner, and adopt the above-mentioned double-disk refiner to grind the slurry to a degree of 45SR, a wet weight of 3.6g, and a whiteness of 45, and then send to The slag remover recycles the coarse slag to the hydraulic pulper for dilution and stirring, and then uses a pressure screen to screen out the good pulp, then sends the good pulp to the pulping tank, and adds additives. The additives use tension agents and retention aids. The parts by weight are...

Embodiment 3

[0032] The present embodiment provides a kind of technique of manufacturing wheat straw pulp, and it comprises the following steps:

[0033] The rice stalks are beaten into pulp by ultrasonic waves, and the rice stalks are made into pulp by ultrasonic waves in the ultrasonic reactor. The frequency of the ultrasonic ballast of the above-mentioned ultrasonic reactor is 35khz, and the beating time is 50s. Then it is sent to the hydraulic pulper. After diluting and stirring in the pulper, carry out fine grinding with a double-disc refiner, and adopt the above-mentioned double-disk refiner to grind the slurry to a degree of knocking of 40SR, a wet weight of 3.2g, and a whiteness of 46, and then send to The slag remover recycles the coarse slag to the hydraulic pulper for dilution and stirring, and then uses a pressure screen to screen out the good pulp, then sends the good pulp to the pulping tank, and adds additives. The additives use tension agents and retention aids. The parts b...

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Abstract

The invention relates to the technical field of paper pulp preparation, in particular to a process for manufacturing wheat straw paper pulp. The process for manufacturing the wheat straw paper pulp comprises the following steps: pulping rice straws, conveying the pulped rice straws to a hydrapulper, conducting diluting and stirring, performing finely grinding by using a double-disc pulping machine, conveying an obtained product to a slag remover, recovering coarse slag to the hydrapulper, conducting diluting and stirring, screening out accepted pulp by using a pressure screen, conveying the accepted pulp to a pulp mixing tank, adding an auxiliary agent, and conveying the obtained mixture to a pre-papermaking tank. The process has the advantages of simple steps and low cost.

Description

technical field [0001] The invention relates to the technical field of pulp preparation, in particular to a process for manufacturing wheat straw pulp. Background technique [0002] In recent years, the average annual consumption of pulp in my country is about 9×10 7 t. The main raw materials for pulping and papermaking are wood fiber, non-wood fiber and secondary fiber, the most important of which is wood fiber. The forest coverage area of ​​our country only accounts for 20% of the territory area, the supply of papermaking raw materials is insufficient, and papermaking wood pulp is mostly dependent on imports. It is the goal pursued by every papermaking enterprise. As a big agricultural country in my country, the annual output of plant straw is 7×10 9 t, the annual output of rice straw is in the forefront. In traditional agriculture, most of the rice straw is disposed of by open burning. This method was once regarded as the main cause of air pollution and greenhouse effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21D1/02D21B1/34D21D1/30D21D5/02D21H11/12D21H21/10D21H21/06
CPCD21D1/02D21B1/345D21D1/303D21D5/02D21H11/12D21H21/10D21H21/06
Inventor 刘洁赵晓兵
Owner 江西中竹生物质科技有限公司