Low energy consumption clean paper pulp extracting method and papermaking process thereof

Abstract

The invention relates to a low energy consumption clean paper pulp extracting method and a papermaking process thereof, solving the problems that fibrous raw materials need to be boiled at high temperature and pressure in the pulp preparing and papermaking processes and chemical solutions produce a large quantity of black or red liquid in the pulp preparing and papermaking processes to cause great waste to resources and great pollution to the environment in the prior art. The invention adopts the following technical scheme: the low energy consumption clean paper pulp extracting method is realized by removing impurities from biomass raw materials rich of fiber, crushing, softening and soaking, separating organic matters, grinding and pulping, wherein a softening and soaking solution contains the following components in percent by weight: 10-20 sodium oxide, 3-5 sodium carbonate, 0.5-2.5 penetrating agent T, 0.5 magnesium oxide and 0.05-0.15 chelating agent EDTA. The papermaking process matched with the method comprises the following steps: getting materials ready, rubbing to devillicate, soaking to react, separating liquid medicine, spirally squeezing pulp, refining with high consistency, removing slag, coarsely screening and making paper. The pulp preparing process has simple course, no high requirements on environment and equipment condition, easily popularized technology, no requirement on the scale of production, low costs for building production lines and purchasing equipment and less running expense.

Description

technical field [0001] The invention belongs to the field of papermaking, and in particular relates to a method for extracting pulp with low energy consumption and cleanness without cooking, without black liquor or red liquor, and a papermaking process realized by applying the method. Background technique [0002] Pulping and papermaking with plant fiber raw materials has a history of thousands of years. Today's chemical pulping methods are divided into two categories, one is alkaline pulping, and the other is acid pulping. Both acid and alkali pulping methods require cooking of plant fiber raw materials, the purpose of which is to remove non-cellulose components in the fiber raw materials, such as lignin or other impurities, while retaining cellulose and hemicellulose as much as possible to facilitate papermaking . To achieve the purpose of cooking and pulping, two conditions must be met, one is high-temperature and high-pressure steam, and the other is a chemical solutio...

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problem that fiber raw materials need to be cooked under high temperature and high pressure in the pulping and papermaking process in the prior art and a large amount of black or red liquid is produced in the process of chemical liquid, which causes great waste of resources and damages to the environment. In view of the serious pollution problem, a low-energy clean pulp extraction method and its papermaking process are proposed