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Denatured production process of bamboo pulp for producing viscose fiber

A production process and viscose fiber technology, applied in the field of bamboo pulp denaturation production process, can solve the problems of low product A fiber, difficult to remove bamboo pulp, and large pollution.

Inactive Publication Date: 2013-02-13
SWAN FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the existing technology are: the bamboo pulp needs to be prepared through chemical high-temperature cooking, the energy consumption is large, the pollution is large, the residual lignin in the bamboo pulp is difficult to remove, and the product produced has low formaldehyde and poor reaction performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Each ball is loaded with 5.8 tons. The paddle board is crushed with a crusher and presoaked with hot alkali (the amount of alkali (NaOH) is 14.5%, the bath ratio is 1:3.5, and the temperature of feeding into the steaming ball is ≥80°C. 1) After feeding, the steaming ball does not Inlet steam for 20 minutes; (2) low-pressure permeation, heat up to 100-120°C, pressure 0.25-0.3mpa, keep warm for 30 minutes; (3) high-temperature and high-pressure cooking, then heat up to 167-173°C, pressure 0.7-0.74mpa, The time is 15-20 minutes; the steam is released to the pressure of 0.1-0.15mpa, and the time is 10-15 minutes; the temperature is raised to 172-173°C three times, and the temperature is kept for 2-2.5 hours, and the pressure is 0.75-0.77mpa. (Steaming effect: DP545±25, methyl fiber is greater than 92%, and the reaction performance is 7C.C. can be passed.) After cooking, it enters the enzyme treatment process after washing the mesh belt and removing sand. After the slurry is...

Embodiment 2

[0049] Example 2: The amount of alkali used for cooking is 18%, and the bath ratio is 1:3.6. Cook DP 557, methyl cellulose 94.3% enzyme treatment process PH=8, temperature 47 degrees, reaction time 2 hours. The amount of enzyme used is 63 grams, the treatment result is methylcellulose content of 95.3%, and the bleaching process parameters are: effective halogen 0.3g / l, acid ratio 0.84%, alkali adjustment amount 70g / m3, whiteness 82, methylcellulose 95.4%

Embodiment 3

[0050] Example 3: The amount of alkali used for cooking is 20%, and the bath ratio is 1:4. Cooking DP 550, methyl fiber 94.5% enzyme treatment process PH = 9 temperature 50 degrees reaction time 2 enzyme dosage 80 grams treatment results methyl fiber content 96.2% bleaching process parameters available chlorine 0.32g / l, acid ratio 0.9%, alkali amount 80g / m3, whiteness 83, methyl fiber 96.2%.

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Abstract

The invention discloses a denatured production process of bamboo pulp for producing viscose fiber, which is used for solving the problems of low methyl fiber, poor reactivity and the like. The denatured production process is characterized in that the process is carried out according to the following procedures of: crushing of pulp boards, preimpregnation of alkali, two-stage insulation and cooking, washing of materials, sand removal, bacterial xylanase treatment, bleaching, acid treatment and sorting; and the process parameters in the bacterial xylanase treatment are as follows: the PH value of pulp is less than 7-9, the temperature is 40-50 DEG C, the enzyme is diluted to be 0.125%, the reaction time is 1.5-2 hours, the concentration of the pulp is 5-8%, and the used amount of the enzyme is 45-80g / t. The bamboo pulp produced by adopting the process has the advantages that the content of methyl fiber is high, the pollution is little, individual viscose spinning of the viscose bamboo pulp product is successful, the filament-forming quality is excellent, the strength and the whiteness of the fiber are obviously improved, and all physical indexes reach the level of first-grade products in the GB / T14463-93 standard.

Description

technical field [0001] The invention relates to a method for manufacturing textile raw materials, in particular to a bamboo pulp denatured production process for producing viscose fibers, and belongs to the technical field of textiles. Background technique [0002] In addition to excellent air permeability, dyeability, and drapability, viscose fiber viscose fabric also has the characteristics of softness, elasticity, wear resistance, brightness, coolness, and antibacterial properties. It is especially suitable for summer clothing and bedding. Cotton pulp is traditionally used as raw material for producing viscose fiber. Due to the shortage of cotton pulp in the market, people in the industry have researched and developed the use of wood pulp and bamboo pulp as raw materials for producing viscose fiber. Because viscose fiber requires high purity of pulp (high methyl fiber, low ash and iron content), and compared with cotton pulp, bamboo pulp has a high content of lignin h...

Claims

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Application Information

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IPC IPC(8): D21C5/00D21C1/06
Inventor 杨启平刘云峰田文智张兆友
Owner SWAN FIBER
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