Ramee rapid glue-removing production process

A production method and rapid technology, applied in the direction of chemical production of bast fibers, etc., can solve the problems of unstable product quality, long production cycle and high cost, and achieve the advantages of shortening scouring time, high product quality and improved spinnability. Effect

Inactive Publication Date: 2005-06-22
张利中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the production methods of ramie degumming are: the first cooking method is pickling → the first cooking → (3 hours and adding NaOH); the second cooking method is pickling → first cooking (1.5 hours) → second cooking (2 hours and adding NaOH) The deficiencies that above-mentioned two kinds of methods exist are: the production cycle is long, and only boiling is generally in 3~5 hours; The content of liquid NaOH is above 5g / L; the cost is high, and the cost per ton of finished product is about 2800-3600 yuan
And the one-boil production method is generally seldom used due to immature technology and unstable product quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. pickling: soak the former hemp with a concentration of 2.0g / L sulfuric acid aqueous solution, the bath ratio is that the former hemp: sulfuric acid aqueous solution is 1: 12 (weight) soaking, the temperature is 55~65 ℃, and the pickling time is 2 hours;

[0028] ②Cleaning: Rinse the soaked raw hemp with clean water until the pH=7, put them on the rack one by one, and drain the water;

[0029] 3. Soaking in alkali: Soak and drain the hemp material of the water content under the NaOH aqueous solution normal temperature of concentration 50g / L; Bath ratio is former hemp: NaOH aqueous solution is 1: 9 (weight), soaking in alkali time 8 minutes, drain alkali after soaking well water for 4 hours.

[0030] 4. scouring: step 3. process the hemp material, add ramie fast chemical degumming auxiliary agent X-903, sodium tripolyphosphate and water and boil together; The consumption of X-903 is 2.5% (weight) of former hemp, three The consumption of sodium polyphosphate is 1.2% (w...

Embodiment 2

[0034] (The raw material hemp used is Sanji hemp or the glue layer content is more than 30%)

[0035] 1. pickling: soak the former hemp with a concentration of 1.8g / L sulfuric acid aqueous solution, the bath ratio is that the former hemp: sulfuric acid aqueous solution is 1: 10 (weight) soaking, the temperature is 55~65 ℃, and the pickling time is 1.5 hours;

[0036] ②Cleaning: Rinse the soaked raw hemp with clean water until the pH=7, put them on the rack one by one, and drain the water;

[0037] 3. Soaking in alkali: Soak and drain the hemp material of the water content under the NaOH aqueous solution normal temperature of concentration 40g / L; Bath ratio is former hemp: NaOH aqueous solution is 1: 8 (weight), soaking in alkali time 6 minutes, drain alkali after soaking well water for 6 hours.

[0038] ④Scouring: Add ramie degumming aid FD-ZT02 (produced by Beijing China Textile Chemical Co., Ltd.), sodium tripolyphosphate and water to the hemp material processed in step ③; ...

Embodiment 3

[0042] (The raw material hemp used is two season hemp or the content of the glue layer is 28% to 30%)

[0043] 1. pickling: soaking the former hemp with a concentration of 2.0g / L sulfuric acid aqueous solution, the bath ratio is former hemp: sulfuric acid aqueous solution=1: 12 (weight) soaking, the temperature is 55~65 ℃, and the pickling time is 2 hours;

[0044] ②Cleaning: Rinse the soaked raw hemp with clean water until the pH=7, put them on the rack one by one, and drain the water;

[0045] 3. Alkali soaking: Soak and drain the hemp material of the water content under the NaOH aqueous solution normal temperature of concentration 50g / L; Bath ratio is former hemp: NaOH aqueous solution is 1: 9 (weight), soaking alkali time 8 minutes, drain after soaking well alkaline water;

[0046] 4. scouring: step 3. process the hemp material, add ramie fast chemical degumming auxiliary agent X-903, sodium tripolyphosphate and water and boil together; The consumption of X-903 is 2.5% (w...

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PUM

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Abstract

Disclosed is a method for removing glue from ramee rapidly, which comprises the steps of, steeping raw ramee with aqueous solution of sulfuric acid, flushing immersed raw ramee with clean water, steeping the ramee with aqueous solution of NaOH, charging adjuvant, sodium tripolyphosphate, boiling in water.

Description

technical field [0001] The invention relates to a production method of ramie degumming. Background technique [0002] At present, the production methods of ramie degumming are: the first cooking method is pickling → the first cooking → (3 hours and adding NaOH); the second cooking method is pickling → first cooking (1.5 hours) → second cooking (2 hours and adding NaOH) The deficiencies that above-mentioned two kinds of methods exist are: the production cycle is long, and only boiling is generally in 3~5 hours; The content of liquid NaOH is above 5g / L; the cost is high, and the cost per ton of finished product is about 2800-3600 yuan. And the one-boil production method is generally seldom adopted because of immature technology and unstable product quality. Contents of the invention [0003] The object of the present invention is to provide a fast degumming production method of ramie with low energy consumption, low pollution, reduced production cost and high production ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02
Inventor 张利中
Owner 张利中
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