Method for recovering wool fibers by using compound enzyme preparation

A compound enzyme preparation and wool fiber technology, applied in the direction of plastic recycling, recycling technology, application, etc., can solve the problems of wool fiber recycling and utilization instructions

Pending Publication Date: 2022-03-25
河北省微生物研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The patent document with the application number CN201710383382.4 discloses an enzymatic depilation method for cowhide. Its main technical idea is to use compound enzymes for enzymolysis, and then depilate after enzymatic hydrolysis. The depilation method with high depilation efficiency, this prior art The recovery and utilization of wool fibers are not explained

Method used

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  • Method for recovering wool fibers by using compound enzyme preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The method for utilizing composite enzyme preparation to reclaim wool fiber comprises the following process steps:

[0024] A. Raw material pretreatment: Soak sheepskin scraps containing wool solid waste in tap water and keep at room temperature for 18 hours;

[0025] B. Drum hair removal: Put the pretreated raw materials into the drum, add alkaline protease, alkaline lipase and Na 2 SO 3 Carry out enzymatic hair removal; the reaction conditions are: temperature 37°C, rotation speed 10 rpm, liquor ratio 1:12; stop the reaction after not less than 5 hours and collect wool fibers;

[0026] The mass ratio of alkaline protease to the liquid in the drum=4‰, the mass ratio of alkaline lipase to the liquid in the drum=4‰, Na 2 SO 3 The mass ratio to the liquid in the drum = 4‰.

[0027] The pH of the enzymatic hair removal reaction in the step B=9.

[0028] The enzyme activity of alkaline protease is 190,000 to 210,000 U / g, the reaction temperature of alkaline protease is...

Embodiment 2

[0030] The difference between this embodiment and embodiment 1 is:

[0031] The method for utilizing composite enzyme preparation to reclaim wool fiber comprises the following process steps:

[0032] A. Raw material pretreatment: Soak sheepskin scraps containing wool solid waste in tap water and keep at room temperature for 12 hours;

[0033] B. Drum hair removal: Put the pretreated raw materials into the drum, add alkaline protease, alkaline lipase and Na 2 SO 3 Carry out enzymatic hair removal; the reaction conditions are: temperature 34°C, rotation speed 5 rpm, liquor ratio 1:8; reaction is stopped after not less than 5 hours and wool fibers are collected;

[0034] The mass ratio of alkaline protease to the liquid in the drum=1‰, the mass ratio of alkaline lipase to the liquid in the drum=1‰, Na 2 SO 3 The mass ratio to the liquid in the drum = 2‰.

[0035] The pH of the enzymatic hair removal reaction in step B is 7.

[0036] All the other contents are the same as in...

Embodiment 3

[0038] The difference between this embodiment and embodiment 1 is:

[0039] The method for utilizing composite enzyme preparation to reclaim wool fiber comprises the following process steps:

[0040] A. Raw material pretreatment: Soak sheepskin scraps containing wool solid waste in tap water and keep at room temperature for 15 hours;

[0041] B. Drum hair removal: Put the pretreated raw materials into the drum, add alkaline protease, alkaline lipase and Na 2 SO 3 Carry out enzymatic hair removal; the reaction conditions are: temperature 35°C, rotation speed 8 rpm, liquor ratio 1:10; stop the reaction after not less than 5 hours and collect wool fibers;

[0042] The mass ratio of alkaline protease to the liquid in the drum=2.5‰, the mass ratio of alkaline lipase to the liquid in the drum=2.5‰, Na 2 SO 3 The mass ratio to the liquid in the drum = 3‰.

[0043] The pH of the enzymatic hair removal reaction in the step B is 8.

[0044] All the other contents are the same as i...

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Abstract

The invention relates to an enzyme preparation and application, in particular to a method for recycling wool fibers by using a compound enzyme preparation. Comprising the following steps: pre-treating raw materials, and carrying out drum unhairing on the pre-treated sheepskin leftover materials by using a compound enzyme preparation compounded by alkaline protease and alkaline lipase. The technical problems of high cost, low efficiency and the like in the prior art are solved. The wool depilating agent is low in cost, good in depilating effect and free of pollution, and the technical indexes such as short wool rate and wool cluster strength are superior to those of natural wool and wool removed through a chemical method.

Description

technical field [0001] The invention relates to an enzyme preparation and its application, in particular to a method for recovering wool fiber by using a compound enzyme preparation. Background technique [0002] In the traditional tanning process, a large amount of solid waste is produced every year. It is reported that a large part of the raw hides used in the tanning industry have not been made into finished products, and a large amount of resources have not been rationally utilized. Solid Waste. The leftovers such as sheep necks and legs produced in the sheepskin tanning process are used as solid waste, which contain more wool fiber resources. In actual production, the treatment methods for the wool-containing scraps are as follows: one is to manually cut and recycle wool fibers, The disadvantages are high labor costs and low efficiency; the second is to entrust companies with solid waste disposal qualifications to handle them, and the disadvantages are high economic in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/10C08L89/00C14C1/04C14C1/06
CPCC08J11/105C14C1/065C14C1/04C08J2389/00Y02W30/62
Inventor 刘春卯曹倩荣吴芳彤郑翔秦梦王力源赵露秦艳梅马清河
Owner 河北省微生物研究所有限公司
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