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Pulping Auxiliaries Added During Atmospheric Pressure Low Temperature Clean Pulping Process

A pulping aid and clean pulping technology, applied in the field of papermaking and pulping, can solve the problems of shortage of fiber raw materials, high energy consumption, environmental pollution, etc., and achieve the effects of reducing emissions, efficient pulping, and improving utilization rate

Active Publication Date: 2018-02-27
TIANJIN RONGYEDA TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The shortage of fiber raw materials, high energy consumption and serious environmental pollution are the three major problems facing my country's paper industry, and will restrict the benign and healthy development of the paper industry to a certain extent for a long time in the future

Method used

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Examples

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Effect test

Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with specific examples, and the specific examples described here are only used to explain the present invention, and are not intended to limit the present invention.

[0020] Example: Taking a high-efficiency energy-saving reactor as an example, prepare 2.5 tons of wheat straw, a clean pulping process at atmospheric pressure and low temperature, including five steps of cutting grass and removing dust, entering the reactor, screening and refining, bleaching and extruding the finished pulp ,first step

[0021] First, cut grass and remove dust, add it to the reaction kettle, and add pulping aids for the first time. The added amount is 200kg of sodium hydroxide with a purity of 100%, 2kg of green oxygen with a solid content of 96%, and a Baume degree of 37.5° 300kg of Bé's sodium silicate, 300kg of 27.5% hydrogen peroxide and 4kg of DTPA.

[0022] Next, within 30-40 minutes, the reactor decompos...

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Abstract

The invention discloses a pulping auxiliary agent added in the normal-pressure low-temperature clean pulping process. The pulping process includes five steps of cutting grass and removing dust, putting into a reaction kettle, screening and refining pulp, bleaching and extruding finished pulp , characterized in that the pulping aids include sodium hydroxide, green oxygen, sodium silicate, hydrogen peroxide, DTPA and low-concentration acid; the present invention utilizes the technological characteristics in the pulping process to combine mechanical devices such as reactors with pulping The organic combination of additives enables the overall pulping process to achieve rapid and efficient pulping under low temperature and normal pressure working environment. The process is environmentally friendly, green and clean, which improves the utilization rate of raw materials and reduces the emission of pollutants.

Description

technical field [0001] The invention relates to the technical field of papermaking and pulping, in particular to a pulping auxiliary agent added in the normal-pressure low-temperature clean pulping process. Background technique [0002] The shortage of fiber raw materials, high energy consumption and serious environmental pollution are the three major problems faced by my country's paper industry, and will restrict the benign and healthy development of the paper industry to a certain extent for a long time in the future. In the past 20 years, the total annual output of paper and pulp in my country has increased from 5.4 million tons in 1985 to 79.8 million tons in 2008. The total production ranks second in the world, but the annual per capita consumption of paper and paperboard is only a tenth of that of developed countries. one. With the rapid development of my country's society and national economy, the demand for paper will continue to grow rapidly, and there is still hug...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21C3/22
Inventor 路付保王从容
Owner TIANJIN RONGYEDA TECH DEV
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