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Flax rove treatment process

A processing technology and roving technology, applied in the field of chemical degumming of flax roving, can solve the problems of quality impact, user injury, environmental pollution, etc., and achieve the effects of reducing processing costs, saving water consumption, and reducing production costs.

Inactive Publication Date: 2009-05-13
HANGZHOUSNGLU SILK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They have the property of accumulating toxicity or dissolve in the bleaching waste liquid or deposit on the surface of fabric fibers, which will pollute the environment and cause harm to users.
In addition, pickling and neutralization in the process are realized in two steps. Sulfuric acid, an inorganic acid, is used in pickling. Cause differences in the whiteness value of each pot of roving and affect the quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Step 1: Add solvent into water, the ratio concentration is caustic soda 2.5g / L, hydrogen peroxide 5.0g / L, sodium silicate 5.0g / L, soda ash 3.0g / L, non / anionic high-efficiency penetrant 0.5g / L L, carbonamide 0.8g / L, sodium tripolyphosphate 1.0g / L, sodium sulfite 2.0g / L, put the flax roving into the solution for scouring and oxygen bleaching, and the temperature is controlled at 80-85°C. The time was kept at 70 minutes.

[0014] The second step: wash with water. First wash twice with hot water, the temperature is controlled at 40-45°C, then wash twice with cold water, then overflow wash for 15 minutes,

[0015] The third step: pickling, add penetrating agent to acetic acid, the concentration of non / anionic high-efficiency penetrating agent is 0.5g / L, the temperature is controlled at about 30°C, and the time is kept for 30 minutes.

[0016] Step 4: Wash with water, first wash twice with cold water, then overflow wash for 20 minutes.

[0017] Step 5: Soft treatment, the ...

Embodiment 2

[0020] Step 1: Add solvent to water, the ratio concentration is caustic soda 3.0g / L, hydrogen peroxide 6.0g / L, sodium silicate 6.0g / L, soda ash 5.0g / L, penetrant 0.9g / L, carbonyl Diamine 3.0g / L, sodium tripolyphosphate 1.5g / L, sodium sulfite 3.0g / L, put the flax roving into the solution for oxygen bleaching, and the temperature is controlled at 85-90°C. The time was kept at 65 minutes.

[0021] The second step: wash with water. First wash with hot water once, the temperature is controlled at 55-60°C, then wash with cold water for 3 times, then overflow wash for 10 minutes,

[0022] The third step: pickling, add penetrant into acetic acid, the concentration of penetrant is 0.9g / L, the temperature is controlled at about 35°C, and the time is kept for 20 minutes.

[0023] Step 4: Wash with water, first wash 3 times with cold water, then overflow wash for 10 minutes.

[0024] Step 5: Soft treatment, the concentration of the alkyl silicon compound RS is 3.0g / L, soak for 5 minute...

Embodiment 3

[0026] Step 1: Add solvent to water, the proportioning concentration is caustic soda 3.5g / L, hydrogen peroxide 6.5g / L, sodium silicate 7.0g / L, soda ash 7.0g / L, penetrant 1.0g / L, carbonyl Diamine 1.5g / L, sodium tripolyphosphate 1.5g / L, sodium sulfite 4.0g / L, put the flax roving into the solution for oxygen bleaching, and the temperature is controlled at 85-90°C. The time was kept at 60 minutes.

[0027] The second step: wash with water. First wash with hot water once, the temperature is controlled at 50-55°C, then wash with cold water for 3 times, then overflow wash for 20 minutes,

[0028] The third step: pickling, add penetrant into acetic acid, the concentration of penetrant is 1.0g / L, the temperature is controlled at about 20°C, and the time is kept for 10 minutes.

[0029] Step 4: Wash with water, first wash 3 times with cold water, then overflow wash for 15 minutes.

[0030] Step 5: Soft treatment, the concentration of the alkyl silicon compound RS is 4.5g / L, soak for ...

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PUM

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Abstract

The invention relates to a process for treating flax rough yarn. The prior sub-oxygen bleaching chemical degumming processes have complex flow, large water usage, large energy consumption, highly toxic substances in the chloride bleaching waste water and high pollution to environment. The process comprises the following reaction steps: step one, boiling-off and oxygen-bleaching, namely adding sodium hudroxide, hydrogen peroxide, sodium silicate, calcined soda, osmotic agent, carbonyl diamide, sodium tripolyphosphate and sodium sulfite into water, and heating and boiling off the mixture; step two, washing by water, namely washing the mixture once or twice by hot water and twice or thrice by cold water, and washing the mixture by overflow; step three, washing by acid, namely using acetic acid and adding the osmotic agent into the acetic acid; step four, washing by water, namely washing the mixture twice or thrice by cold water, and washing the mixture by overflow; and step five, soft treatment, namely adding alkyl silicon composite RS into the water. The process adopts the method of combining carbomite and the hydrogen peroxide to replace sodium chlorite which is a toxic bleaching agent, is favorable for environmental protection, improves whiteness of yarns at the same time, and reduce production cost.

Description

technical field [0001] The invention belongs to the field of textile technology and relates to a chemical degumming process for flax roving. Background technique [0002] The chemical treatment engineering of flax roving is the core technology in flax wet spinning process. At present, the chemical treatment of flax roving used in my country's flax spinning mills is a sub-oxygen bleaching chemical degumming process. The process includes seven steps: pickling, sub-bleaching, water washing, oxygen bleaching, water washing, pH neutralization, and water washing. Taking the amount of 1.0-1.5 tons of flax roving as an example, it takes nearly 6 hours to complete the chemical treatment of a pot of flax roving, the water consumption is 160-170 tons, and the coal consumption is about 800Kg. Not only the time and energy consumption are high, but also the explosive and dangerous sodium chlorite is used in the sub-bleaching step, which is not only expensive, difficult to transport and s...

Claims

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Application Information

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IPC IPC(8): D06L1/16D06L3/02D06M13/50D06L4/12D06L4/13
Inventor 王爱兵
Owner HANGZHOUSNGLU SILK
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