Production process of high-yield poplar chemi-mechanical pulp

Abstract

The invention relates to the field of papermaking pulping, and in particular, relates to a production process of high-yield poplar chemi-mechanical pulp, wherein the production process comprises the steps: S10, metering wood chips; S20, electromagnetically removing iron; S30, screening; S40, washing; S40, carrying out dehydration; S60, carrying out steam softening; S70, carrying out a reaction in a softening reaction bin; S80, electromagnetically removing iron; S90, carrying out thread rolling; S110, carrying out a reaction in a bleaching reaction bin; S120, connecting two stages of high-concentration grinders in series for coarse grinding; S130, carrying out a reaction in a latency reaction bin; and S140, connecting two stages of medium-consistency grinders in series. The method is simple and clear in process flow, low in investment, quick in effect, good in flexibility and high in applicability; the produced pulp is used for preparing medium-grade and high-grade electrostatic copy paper, two-side offset paper, patterned paper, water color paper, water-absorbing base paper, cup paper, light paper and the like, has good paper surface strength, bulk and air permeability superior to those of full-chemical reed pulp paper, and is flat, smooth, good in stiffness and good in printing property; therefore, the poplar chemi-mechanical pulp production process is an effective way for improving product structures, improving product grades and increasing economic benefits in small and medium-sized enterprises.

Description

technical field [0001] The invention relates to the field of papermaking and pulping, in particular to a production process of high-yield poplar wood chemical pulp. Background technique [0002] The shortage of fiber raw materials in my country's paper industry seriously restricts the development of the paper industry. Develop in the direction of high-speed printing; Poplar chemical pulp is a low-pollution, high-environmental, high-yield pulping method, and it is the most effective way to improve product bulk, opacity, printing performance, and reduce product weight; [0003] However, for small and medium-sized enterprises to introduce foreign PRC-ARMP (chemically pretreated alkaline hydrogen peroxide mechanical pulp), BCTMP (bleached chemical thermomechanical pulp) pulping technology and equipment, there are: ①The production capacity is too large and the system is not matched ; ②Large investment, which ordinary enterprises cannot bear; ③Excessive production capacity and sho...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of production technique of high yield poplar chemical mechanical pulp, will introduce foreign PRC-ARMP (chemically pretreated alkaline hydrogen peroxide mechanical pulp) to solve the existing small and medium-sized enterprises proposed in the above-mentioned background technology , BCTMP (bleached chemical thermomechanical pulp) pulping process and equipment, there are: ① the production capacity is too large and the system is not matched; ② the investment is large, and ordinary enterprises cannot bear it;

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