Zero-emission technology for adopting oxidation heat twisting combination method for manufacturing straw pulp

Abstract

The invention discloses a technology adopting an oxidation heat twisting combination method for manufacturing straw mechanical pulp. The technology comprises the steps that straw is cut off and subjected to ozone treatment; a material subjected to ozone treatment is concentrated; the concentrated material is fed into a compound straw separator to be subjected to first-stage heat twisting; the material subjected to first-stage heat twisting is conveyed into a continuous steamer to be subjected to continuous steaming; the material subjected to continuous steaming is fed into a single straw separator to be subjected to second-stage heat twisting; the material subjected to second-stage heat twisting is conveyed into a latency device to be subjected to ozone oxidation; the material treated through the latency device is conveyed into a disc type separator to be subjected to wire separation and brooming; the material subjected to wire separation and brooming is screened in a low-concentration mode to obtain the straw mechanical pulp. According to the technology for adopting the oxidation heat twisting combination method for manufacturing the straw mechanical pulp, cellulose and hemicellulose are preserved to the greatest extent, and the pulp obtaining rate reaches 80% or above. The technology for manufacturing the straw mechanical pulp further comprises a technological waste water treatment technology, technological water is purified and recycled, and zero emission is achieved.

Description

technical field [0001] The invention belongs to the technical field of straw processing, and relates to a zero-emission oxidation heat rubbing combination method for making straw pulp. Background technique [0002] Using straw instead of trees to make paper not only saves forest resources, but also comprehensively utilizes crop straw. [0003] The traditional straw pulping process mainly includes chemical pulping process, mechanical pulping process and so on. [0004] The chemical pulping process requires the use of large doses of chemicals to crack and dissolve lignin macromolecules. Generally, high-temperature and high-pressure ball steaming devices are used to intermittently produce chemical pulp under strong alkali or strong acid conditions. Although the chemical pulp produced by this method can produce writing paper and household paper, the pulp yield is low, and the yield of straw pulp per ton is only about 30%, and the energy consumption is large, the pollution load ...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the cloth is uneven, the amount of glue used is large, and the cost is high.

[0007] At present, domestic manufacturers of pulp molding products use waste paper to process industrial paper and egg tray products. Its disadvantage is that the scope of application is greatly limited due to the waste paper containing heavy metals such as lead, as well as inks and dyes.

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