Process for manufacturing paper pulp by active method and with fresh bamboo as raw material

Abstract

The invention provides a process for manufacturing paper pulp by an active method and with fresh bamboo as a raw material. The process comprises the steps that bamboo cutting is performed; slicing isperformed; ultra-high pressure grading rolling is performed, specifically, bamboo chips are placed in a rolling roll for grading rolling, wherein grading rolling includes four to six grades of rolling, and the rolling pressure of each grade is gradually increased; thread rolling is performed; primary filtration extrusion is performed to obtain initially filtered bamboo pulp; secondary filtration extrusion is performed, specifically, water is added to the initially filtered bamboo pulp and then heating and stirring are performed, then physical filtration and secondary extrusion are sequentiallyperformed to obtain re-filtered bamboo pulp, and the total time is not more than 72h from the beginning of raw bamboo cutting to secondary filtration extrusion; and a biological enzyme is softened and released. The process rapidly separates lignin, amino acid, flavone, proteins and the like from bamboo fiber when lignin, amino acid, flavone, proteins and the like are still in a liquid state, is conducive to maintaining the integrity of the bamboo fiber to the utmost extent, is simple in operation and low in cost, is energy-saving, environmentally friendly and low-carbon, and is worth popularizing and applying.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a process for producing pulp for papermaking by using fresh bamboo as a raw material through an active method. Background technique [0002] my country is rich in bamboo resources, the annual output of bamboo ranks the highest in the world, and most bamboos have excellent pulping and papermaking performance, which is close to that of broad-leaved wood. However, bamboo raw materials have a tight tissue structure and difficult liquid penetration. In the traditional bamboo cooking process, the black pulp washing liquid is directly sent to evaporate, which is prone to silicon interference and calcium scaling. There are complex process operations, long cooking cycles, low production efficiency, Serious energy consumption, serious pollution and other problems do not conform to the green, environmental protection, low-carbon and energy-saving production concepts advocated by the sta...

AI Technical Summary

Problems solved by technology

However, the structure of bamboo raw materials is tight, and the liquid penetration is difficult. In the traditional bamboo cooking process, the black pulp washing liquid is directly sent to evaporate, which is prone to silicon interference and calcium scaling. There are complex process operations, long cooking cycles, low production efficiency, Serious energy consumption, serious pollution and other problems do not conform to the green, environmental protection, low-carbon and energy-saving production concepts advocated by the state