Material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp
A bamboo-wood composite and bamboo pulp technology is applied in the post-treatment modification of cellulose pulp, raw material separation, pre-treatment with alkaline compounds, etc., which can solve the problems of discomfort, low quality of dissolving pulp and high cost, and achieve cost reduction. , The material preparation process is easy and the cost is low
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Embodiment 1
[0053] A material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp, comprising the following process steps:
[0054] A. Raw material preparation
[0055] According to the ratio of the total weight of bleached bamboo pulp and bleached wood pulp to the volume of the digester: 100kg: 1m 3 Prepare raw materials, select bleached bamboo pulp and bleached wood pulp;
[0056] B. Scatter and slice
[0057] Dispersing bleached bamboo pulp and bleached wood pulp into pulp boards and cutting bleached bamboo pulp boards and bleached wood pulp boards into small pieces;
[0058] C. Dipping
[0059] The dispersed and sliced bleached bamboo pulp and bleached wood pulp are mixed with sodium hydroxide solution to obtain a mixture of bleached bamboo pulp, bleached wood pulp and sodium hydroxide solution, that is, pulp porridge, and the control liquid ratio is 1:3. The solid weight of sodium hydroxide in the sodium hydroxide solution is 17% o...
Embodiment 2
[0062] A material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp, comprising the following process steps:
[0063] A. Raw material preparation
[0064] According to the ratio of the total weight of bleached bamboo pulp and bleached wood pulp to the volume of the digester is 250kg: 1m 3 Prepare raw materials, select bleached bamboo pulp and bleached wood pulp;
[0065] B. Scatter and slice
[0066] Dispersing bleached bamboo pulp and bleached wood pulp into pulp boards and cutting bleached bamboo pulp boards and bleached wood pulp boards into small pieces;
[0067] C. Dipping
[0068] The bleached bamboo pulp and bleached wood pulp dispersed and sliced are mixed with sodium hydroxide solution to obtain a mixture of bleached bamboo pulp, bleached wood pulp and sodium hydroxide solution, namely pulp porridge. The control liquid ratio is 1:4, The solid weight of sodium hydroxide in the sodium hydroxide solution is 22% of th...
Embodiment 3
[0071] A material preparation process for preparing dissolving pulp by modifying bleached bamboo-wood composite pulp, comprising the following process steps:
[0072] A. Raw material preparation
[0073] According to the ratio of the total weight of bleached bamboo pulp and bleached wood pulp to the volume of the digester is 175kg: 1m 3 Prepare raw materials, select bleached bamboo pulp and bleached wood pulp;
[0074] B. Scatter and slice
[0075] Dispersing bleached bamboo pulp and bleached wood pulp into pulp boards and cutting bleached bamboo pulp boards and bleached wood pulp boards into small pieces;
[0076] C. Dipping
[0077] Mix bleached bamboo pulp and bleached wood pulp with sodium hydroxide solution after dispersing and slicing to obtain a mixture of bleached bamboo pulp, bleached wood pulp and sodium hydroxide solution, that is, pulp porridge. The control liquid ratio is 1:3.5, The solid weight of sodium hydroxide in the sodium hydroxide solution is 19.5% of ...
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