Technological process of mechanically making bamboo pulp

Abstract

The present invention relates to a mechanical pulping method of bamboo pulp, including the procedures of raw material treatment, extrusion to extract fibre, soaking-softening and grinding to make pulp. It is characterized by that the procedure of extrusion to extract fibre uses bamboo pulp-making machine to extrude bamboo material, and separates the bamboo fibre from bamboo juice liquid uner the action of high temp. and high pressure to extract bamboo fibre. The soaking-softening procedure includes the steps: soaking bamboo fibre in hot alkali water whose alkali content is 1%-5% for 1-2 hr. and softening and dissolving lignin and hemicellulose; and the grinding and pulping procedure is to place the soaked bamboo fibre in pulp grinder and grind it to obtain monomer fibre pulp stock.

Description

Technical field [0001] The present invention relates to a method for manufacturing paper pulp, more specifically, to a method for manufacturing bamboo pulp using bamboo as a raw material for papermaking. Background technique [0002] At present, the papermaking industry in my country is mainly straw pulp papermaking, followed by wood pulp, and traditional bamboo pulp papermaking. In papermaking with straw pulp, the black liquor is seriously polluted. Due to the high silicon content in the waste liquid, it is difficult to handle. So far, it is still an unsolved technical difficulty. Wood pulp papermaking uses wood as raw material, although it can eliminate environmental pollution, but wood consumption is large. my country is a country lacking forest resources, with serious erosion of soil and water and precious forest resources. Due to the need to protect the environment and resources, the amount of timber harvested has been decreasing year by year. my country's bamboo forest reso...

AI Technical Summary

Problems solved by technology

my country is quite rich in bamboo forest resources. There are large areas of bamboo forests in Southwest, South China, Central China, and East China provinces. Traditional bamboo papermaking has been handed down to this day, but the method is backward.

In the traditional bamboo pulp production process, bamboo needs to be steamed with steamed balls. Generally, bamboo in steamed balls needs to be steamed for more than 10 hours. energy, and the fiber acquisition rate is only 30% at most, and a large amount of black liquor is produced after washing pulp after cooking, which seriously pollutes the environment

Images