Biological treatment method of non-wood pulp
A biological treatment, non-wood technology, applied in the field of non-wood pulp biological treatment and enzymatic modification of straw pulp, to achieve the effects of improving binding force, increasing filamentation, and improving physical strength
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Embodiment 1
[0021] Bleached kraft bamboo pulp, disintegrated under 3-5% pulp concentration in a hydraulic pulper, and added a mixture of hemicellulase Pulpzymes HC and Nozymes51064 in a weight ratio of 1:1 during the disintegration process. The enzyme addition amount is 250g / Disintegrate a ton of pulp for 8 minutes, then treat it at 40-55° C. and pH 6.0-8.0 for 0.5-2.0 h, and then refine the pulp with a disc mill at a slurry concentration of 3%-4%. After refining, the pulp beating degree is 40-60°SR. Compared with the pulp without enzyme treatment, after enzyme treatment beating, under the same beating degree, the tensile strength is increased by 10%, and the bursting strength is increased by 15%. The beating time is reduced by 20% (reduced energy consumption).
Embodiment 2
[0023] Reed kraft bleached pulp, disintegrated under the concentration of 3-5% pulp in the hydraulic pulper, and added a mixture of hemicellulase Pulpzymes HC and cellulase Nozymes51064 in a weight ratio of 1:1 during the disintegration process, and the amount of enzyme added The pulp is 200g / ton, disintegrated for 8 minutes, then treated at 30-55°C and pH 6.0-8.0 for 0.5-2.0h, and then refined with a disc mill at a pulp concentration of 3.0-4.0%. After refining, the pulp beating degree is 50-55°SR. Compared with the pulp without enzyme treatment, after enzyme treatment beating, under the same beating degree, the tensile strength is increased by 10%, and the bursting strength is increased by 10%. The tearing strength is basically the same, while the beating time is reduced by 35%.
Embodiment 3
[0024] Example 3: Add a mixture of hemicellulase Pulpzymes HC and cellulase Nozymes 51064 in a weight ratio of 1:1 to fresh reed kraft pulp that has not been dried after bleaching. The amount of enzyme added is 200g / ton of pulp at 30- It is treated at 55°C and pH 6.0-8.0 for 0.5-2.0 h, and then refined with a disc mill at a slurry concentration of 3.0-4.0%. After refining, the pulp beating degree is 50-55°SR. Compared with the pulp without enzyme treatment, after enzyme treatment beating, under the same beating degree, the tensile strength is increased by 12%, and the bursting strength is increased by 8%. The tearing strength is basically the same, while the beating time is reduced by 35%.
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