Pre-processing method in process of producing paper pulp

Abstract

The invention relates to a pre-processing method in the process of producing paper pulp, belonging to the field of papermaking. The method provided by the invention comprises the following steps of: mixing water, ethanol and acetic acid in the volume ratio of 1 to 1-5 to 1-5; uniformly agitating raw materials to prepare pre-processing liquid; adding the pre-processing liquid into a reactor and adding paper mulberry wood chips in the mass ratio of the paper mulberry wood chips to the pre-processing liquid of 1 to 1-1.5, wherein the total volume of the material and the liquid is not more than 1 / 2 of the volume of the reactor; closing the reactor and then heating and boiling for 20-25 min at a temperature in a range of 100-110 DEG C; standing and reducing the temperature; filtering to obtain the pre-processed raw materials and carrying out the next processing procedure after washing the pre-processed raw materials. Compared with the traditional papermaking boiling process by utilizing an alkaline method and an acidic method, the method provided by the invention greatly reduces the waste liquid pollution, saves energy source and reduces production cost; the method provided by the invention can be independently utilized and also can be united with the traditional method, so that the effects of saving energy, reducing emission and reducing consumption are reached.

Description

Technical field [0001] The invention relates to a pretreatment method in the production process of paper pulp, in particular to a pretreatment method in the production process of paper pulp of paper mulberry raw material, and belongs to the technical field of papermaking. Background technique [0002] Paper is a necessity for human survival and life. People’s daily production and life are inseparable from paper. Therefore, how to ensure industrial production to ensure people’s production and living needs, and to protect the ecological conditions and resources on which people depend, This is a serious subject facing modern people. [0003] The production and consumption of paper and paperboard in my country in recent years are as follows: [0004] [0005] It can be seen from the table that the total production and consumption have increased by an average of 14% each year. According to the two major problems currently existing in the paper industry, it is expected that the growth rat...

AI Technical Summary

Problems solved by technology

The problems faced by my country's papermaking enterprises are mainly the pollution caused by traditional crafts to the environment. With the strengthening of human environmental protection, more and more troubles have been brought to enterprises, and more efforts have been made to invest in pollution control and sacrifice costs to maintain production and operation. The increase of cost reduces the market competitiveness of enterprise products

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