Raw wool treating supercritical CO2 process

A supercritical, raw wool technology, applied in fiber treatment, fiber chemical post-treatment, animal raw materials, etc., can solve the problems of high turbidity, poor product quality, high cost, etc., and achieve no three wastes discharge, good product quality, low fat content low effect

Inactive Publication Date: 2007-10-03
廖秀义
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. There are many steps to process raw wool and the process is complicated;
[0004] 2. Washing the raw wool with a detergent solution to make the fat content of the degreased wool after washing equal to or lower than 1% requires a lot of water and detergent, otherwise the degreasing of the raw wool will not be clean. The quality of degreased wool is not high, the waste of fresh water resources and the consumption of a large amount of detergent;
[0005] 3. A large amount of wool washing wastewater is high-concentration organic wastewater, which mainly contains lanolin and detergent, and also contains impurities such as sheep sweat, sheep manure, grass clippings and sediment. Lanolin is in an emulsified suspension state due to emulsification and saponif

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Supercritical CO 2 The method of extracting lanolin has the following steps:

[0017] (1) Get the raw wool cut from the sheep, and remove the obvious impurities in the raw wool, such as soil lumps, long grass straws, grass clippings, sheep dung lumps, etc., to obtain impurity-removed raw wool;

[0018] (2) Use supercritical CO to decontaminate raw wool with a weight of 913Kg 2 Extraction method Extraction treatment to obtain refined lanolin and fat content of 0.5% to 0.6% degreased wool, supercritical CO 2 The extraction conditions are: extraction pressure 35MPa, extraction temperature 70°C, primary separation pressure 9.5MPa, primary separation temperature 47.5°C, secondary separation pressure 5.5MPa, secondary separation temperature 39°C, and 110Kg of refined lanolin was obtained.

Embodiment 2

[0020] Supercritical CO 2 The method of extracting lanolin has the following steps:

[0021] (1) with step (1) in embodiment 1

[0022] (2) Supercritical CO 2 Extraction conditions are: extraction pressure 32.5MPa, extraction temperature 65 DEG C, primary separation pressure 9.25MPa, primary separation temperature 46.5 DEG C, secondary separation pressure 5.25MPa, secondary separation temperature 37.5 DEG C, other steps in the same embodiment 1 ( 2).

Embodiment 3

[0024] Supercritical CO 2 The method of extracting lanolin has the following steps:

[0025] (1) with step (1) in embodiment 1

[0026] (2) Supercritical CO 2 Extraction conditions are: extraction pressure 37.5MPa, extraction temperature 67.5 DEG C, primary separation pressure 9.75MPa, primary separation temperature 48.5 DEG C, secondary separation pressure 5.75MPa, secondary separation temperature 40.5 DEG C, other steps in the same embodiment 1 ( 2).

[0027] Lanolin is a natural substance with relatively complex components. It is a multi-component composition. There are components that can be dissolved in lanolin at low temperature and low pressure, and components that can be dissolved at high temperature and high pressure. , The components that can be dissolved at low pressure are light components, and the components that can be dissolved at high temperature and high pressure are heavy components. Use supercritical CO 2 When the extraction method is used to process raw...

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PUM

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Abstract

The raw wool treating supercritical CO2 process includes the following steps: 1. depurating raw wool; 2. extracting depurated raw wool with supercritical CO2 to obtain lanolin and degreased wool. The supercritical CO2 process has the conditions, including extraction pressure 30-40 MPa, extraction temperature 60-75 deg.c, the first stage separation pressure 9-10 MPa, the first stage separation temperature 45-50 deg.c, the second stage separation pressure 5-6MPa, and the second stage separation temperature 36-42 deg.c. The present invention has simple technological process, high product yield, environment friendship, low cost and high product quality.

Description

technical field [0001] The invention relates to a method for directly processing raw wool to extract refined lanolin and degreased wool, in particular to a method using supercritical CO 2 Process for processing raw wool to extract refined lanolin and skimmed wool. Background technique [0002] Wool is a high-grade textile material. The raw wool cut from sheep contains 9% to 12% lanolin. The wool used as raw material for wool spinning should be degreased wool with a fat content equal to or lower than 1% after the lanolin is removed from the raw wool. The raw wool should be processed. The first purpose of the processing is to obtain degreased wool with a fat content equal to or lower than 1%, and then to obtain lanolin. Lanolin is a natural substance with relatively complex components. The refined lanolin has good water absorption, wettability, film-forming property, lipophilicity, emulsification and dispersibility. It does not crystallize at low temperature and has bacteric...

Claims

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Application Information

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IPC IPC(8): D01C3/00D06M11/76
CPCY02W30/74
Inventor 廖秀义
Owner 廖秀义
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