Caustic soda-free and normal temperature papermaking pulping process

Abstract

The invention relates to a caustic soda-free and normal temperature papermaking pulping process. Non-wood plant materials are fragmented and sieved to obtain a pulping raw material; the pulping raw material and a pulping agent A, a pulping agent B and a water are uniformly mixed and reacted at room temperature for 3-5 hours to obtain a softening material; the softening material is sent to a high concentration pulping machine for refining pulp to obtain mass-color pulp; and the mass-color pulp is sent to a pulp extruding machine for extruding pulp to obtain mass-color semi-dry finished productpulp and residual water. The process replaces common chemicals such as caustic soda with the environmentally-friendly pulping agents A and B, and changes the pulping process, thereby achieving the purpose of "three high and two low".

Description

technical field [0001] The invention relates to a non-caustic soda normal temperature papermaking and pulping process, which belongs to the field of papermaking and pulping. Background technique [0002] At present, domestic and foreign pulping methods all use a large amount of caustic soda. The world produces about 200 million tons of pulp every year and consumes about 15 million tons of caustic soda. my country produces about 80 million tons of pulp every year and consumes about 6 million tons of caustic soda. The annual consumption of caustic soda in the paper and pulp industry accounts for 15% of the total output of caustic soda in the whole year. [0003] The energy consumption of my country's paper industry accounts for 7.5% of the national industrial energy consumption. The energy consumption of each ton of pulp is about 0.5 tons of standard coal, and the annual coal consumption of pulping is about 40 million tons. [0004] According to current pulping method at ho...

AI Technical Summary

Problems solved by technology

[0009] Fifth, coal combustion produces a large amount of waste residue, causing environmental pollution

[0010] Sixth, coal combustion consumes a lot of energy

[0011] It can be seen that the current pulping process is backward, consumes a lot of resources and energy, and causes great pollution to the environment.

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