Straw papermaking process

Abstract

The invention discloses a straw papermaking process which comprises the following steps: (1) softening straws; (2) pouring the softened straws into a twin-screw twisting machine for extrusion devillicate; (3) pouring the material into a reaction chamber of 90 DEG C, and performing hydrogen peroxide bleaching reaction for 90 to 100 minutes; (4) pouring the material into another twin-screw twistingmachine for second extrusion devillicate; (5) pouring the extruded material into a pulping machine for pulping to obtain coarse pulp; (6) pouring the coarse pulp into a fiber disintegrator for disintegrating 5 minutes; (6) pulping the disintegrated coarse pulp with the pulping machine to obtain fine pulp; (7) removing the non-pulped residue from the fine pulp by using a residue remover to obtain clean pulp; (8) removing water from the clean pulp by using a centrifugal dewatering machine to obtain concentrated pulp; (9) adjusting the pH value of the concentrated pulp to 7 with a neutralizer ina pulp adjustment tank to obtain adjusted pulp; (10) making the adjusted pulp into pulp boards or paper products by using a forming machine. The straw pulp concentration is high, and the product quality is good.

Description

technical field [0001] The invention relates to the technical field of straw papermaking, in particular to a straw papermaking process. Background technique [0002] Straw is the general term for the stem and leaf parts of mature crops. It usually refers to the remaining part of wheat, rice, corn, potato, rapeseed, cotton, sugar cane and other crops (usually coarse grains) after harvesting the seeds. More than half of the photosynthetic products of crops exist in straw, which is rich in nitrogen, phosphorus, potassium, calcium, magnesium and organic matter, and is a multi-purpose renewable biological resource. [0003] Straw can be used to make paper, and the process is generally divided into two steps: first, the plant straw raw material is made into pulp, and then the pulp is made into paper, cardboard and paper products. At present, the paper pulping process can be divided into three methods: chemical cooking pulping, mechanical pulping and chemical mechanical pulping. ...

AI Technical Summary

Problems solved by technology

Among them, the chemical cooking pulping process accounts for more than 70%, the mechanical pulping process accounts for a small proportion, and the rest is the chemical mechanical pulping process, but these paper pulping processes all have the problem of low concentration of straw pulp, and the quality of the products needs to be determined. improve

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