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Pretreatment method for preparing Dendrocalamus latiflorus unbleached pulp

A technology of pretreatment and hemp bamboo, applied in washing/replacing pulp treatment liquid, non-woody plant/crop pulp, pulp dewatering, etc., to achieve the effect of high strength, simple process and low cost

Active Publication Date: 2017-08-11
广西佳年农业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The invention provides a pretreatment method for preparing the natural color pulp of hemp bamboo to solve the problem of how to improve the yield and whiteness of hemp bamboo pulp

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0032] In an embodiment, the preparation method of described hemp bamboo natural color pulp comprises the following steps:

[0033] S1: Cut Mazhu into pieces with a size of 24-28×3-3.6mm×1.4-2mm, and transport them to the primary pretreatment infusion A, the weight of the hemp bamboo is equal to the volume of the primary pretreatment infusion A The ratio is 1:2-4, and the primary pretreatment immersion liquid A includes the following raw materials in parts by weight: 4-8 parts of alkylphenol polyoxyethylene ether, 0.3-0.6 parts of triethanolamine, 0.5-0.5 parts of stearic acid 1 part, 0.4-1.2 parts of oleic acid, 0.8-1.5 parts of lauric acid, 42-90 parts of water, soak for 30-45 minutes at an ultrasonic power of 30-50W and a temperature of 43-48°C, and then filter to obtain the soaking material A;

[0034] S2: Transport the soaking material A prepared in step S1 to the secondary pretreatment immersion liquid B, the ratio of the weight of the immersion material A to the volume...

Embodiment 1

[0039] A preparation method of hemp bamboo natural color pulp, comprising the following steps:

[0040] S1: Cut the bamboo into pieces with a size of 26×3.4mm×1.8mm, and transport them to the primary pretreatment infusion A, the ratio of the weight of the hemp bamboo to the volume of the primary pretreatment infusion A is 1:2 , the primary pretreatment immersion solution A is in parts by weight, including the following raw materials: 4.1 parts of alkylphenol polyoxyethylene ether, 0.3 part of triethanolamine, 0.5 part of stearic acid, 0.4 part of oleic acid, 0.8 part of lauric acid, 42 parts of water, soaked for 45 minutes at an ultrasonic power of 30W and a temperature of 44°C, and then filtered to obtain the impregnated material A;

[0041] S2: Transport the steeping material A prepared in step S1 to the secondary pretreatment immersion liquid B, the ratio of the weight of the steeping material A to the volume of the secondary pretreatment immersion liquid B is 1:6, and the ...

Embodiment 2

[0046] A preparation method of hemp bamboo natural color pulp, comprising the following steps:

[0047]S1: Cut Mazhu into pieces with a size of 24×3mm×1.4mm, and transport them to the primary pretreatment infusion A, the ratio of the weight of the hemp bamboo to the volume of the primary pretreatment infusion A is 1:4, The primary pretreatment immersion solution A is in parts by weight and includes the following raw materials: 8 parts of alkylphenol polyoxyethylene ether, 0.6 part of triethanolamine, 1 part of stearic acid, 1.2 parts of oleic acid, 1.5 parts of lauric acid, water 90 parts were soaked for 32 minutes at an ultrasonic power of 50W and a temperature of 48°C, and then filtered to obtain the impregnated material A;

[0048] S2: Transport the soaking material A prepared in step S1 to the secondary pretreatment immersion liquid B, the ratio of the weight of the immersion material A to the volume of the secondary pretreatment immersion liquid B is 1:13, and the seconda...

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PUM

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Abstract

The invention discloses a pretreatment method for preparing Dendrocalamus latiflorus unbleached pulp and belongs to the technical field of production of unbleached paper. The pretreatment method comprises the steps of S1, cutting Dendrocalamus latiflorus into strips, conveying into primary pretreatment soaking liquid A which comprises, by weight, alkylphenol ethoxylates, triethanolamine, stearic acid, oleic acid, lauric acid, and water, soaking under the action of ultrasonic for 30-45 min, and filtering to obtain soaked material A; S2, conveying the soaked material A of step S1 into secondary pretreatment soaking liquid B, soaking under the action of ultrasonic for 20-40 min, and filtering to obtain soaked material B to finish pretreatment. The yield and whiteness of pulp pretreated by the pretreatment method are significantly higher than those of pulp produced via the prior art; in addition, the pulp has good water-filtering property, high strength and low cost, and the pulp production process has low energy consumption.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of uncolored paper preparation, and in particular relates to a pretreatment method for preparing hemp bamboo uncolored pulp. [0003] 【Background technique】 [0004] The current pulp production methods mainly include chemical, semi-chemical, mechanical and chemical-mechanical processes. Among them, chemical pulping occupies a dominant position among many pulping methods at present. The pulp prepared by chemical cooking is called natural pulp. The low brightness of natural pulp limits its application. Generally, natural pulp can only be produced after bleaching to produce higher-grade paper. If the whiteness of the natural pulp can be improved during the pulping process, the trouble of subsequent bleaching can be saved, the production process can be simplified, the production cost can be reduced, and the use value of the natural pulp can be increased. [0005] In the production process of natural pu...

Claims

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Application Information

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IPC IPC(8): D21H11/02D21H11/12D21C9/02D21C9/18D21B1/06D21D5/02
CPCD21B1/063D21C9/02D21C9/18D21D5/02D21H11/02D21H11/12
Inventor 古金荣古丰铭
Owner 广西佳年农业有限公司
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