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Membrane separation based active bright-blue KNR clean production method

A reactive brilliant blue, clean production technology, applied in semipermeable membrane separation, reactive dyes, chemical instruments and methods, etc., can solve the problems of unsuitable liquid dyes, affecting the solubility of dyes, and obtaining high-strength dyes.

Inactive Publication Date: 2005-02-16
SHANGHAI HUAYI GRP CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following problems: ①The generated waste acid needs to be treated; ②After neutralization, a large amount of sodium sulfate will be mixed in the dye, so that high-strength dye cannot be obtained, and the solubility of the dye will be affected, especially it is not suitable for making liquid dye
The disadvantages of this method are: ① gypsum containing certain organic substances must be treated separately; ② it is difficult to remove calcium ions, which will affect the solubility of the dye, so it is not suitable for making liquid dyes

Method used

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  • Membrane separation based active bright-blue KNR clean production method
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Examples

Experimental program
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Effect test

Embodiment 1

[0029] The following dye chromophore synthetic 4-(3'-β-hydroxyethylsulfone-aniline)-1-amino-anthraquinone-2-sodium sulfonate has a structural formula such as (2).

[0030] The above-mentioned chromogen was washed with 2268 g of sodium sulfate aqueous solution permeated by membrane separation produced in the previous batch to remove side reactants, and then dried. Then dry chromogen 92g (component 92%) is added in the kneading device, and sulfuric acid 29.3g (component 98%) is gradually added to carry out esterification reaction. The reaction time is 0.7 hours; It was diluted with ice water consisting of 242.6 g of water (0-5° C.), and then adjusted to pH 4-4.5 with 66 g of sodium bicarbonate.

[0031] The reactive brilliant blue KNR sodium sulfate aqueous solution is subjected to membrane separation in an aromatic polyamide tubular membrane separation device with a molecular weight cut-off of 500-5000, and the cut-off area of ​​the membrane is 0.02m 2 , operating pressure 2.0...

Embodiment 2

[0034] The following dye chromophore synthetic 4-(3'-β-hydroxyethylsulfone-aniline)-1-amino-anthraquinone-2-sodium sulfonate has a structural formula such as (2).

[0035] The above-mentioned color base was washed with 6428 g of sodium sulfate aqueous solution permeated through the membrane separation produced in the previous batch to remove side reactants, and then dried. Then dry chromogen 88g (component 92%) is added in the kneading device, and sulfuric acid 45.3g (component 100%) is gradually added to carry out esterification reaction. The reaction time is 0.5 hour; Dilute in ice water consisting of 400g of water (0-5°C), and then adjust the pH to 3.5-4 with 102g of sodium carbonate.

[0036] The active brilliant blue KNR sodium sulfate aqueous solution is subjected to membrane separation in a tubular membrane separation device of modified polyethersulfone with a molecular weight cut-off of 1000-6000, and the cut-off area of ​​the membrane is 0.02m 2 , operating pressure ...

Embodiment 3

[0039] The following dye chromophore compound 4-(3'-β-hydroxyethylsulfone-6-methoxy-aniline)-1-amino-anthraquinone-2-sodium sulfonate has a structural formula such as (3):

[0040]

[0041] The above-mentioned chromogen was washed with 2341 g of sodium sulfate aqueous solution permeated by membrane separation produced in the previous batch to remove side reactants, and then dried. Add 29.3 g (96%) of sulfuric acid to 100 g (92%) of the dried chromogen, and perform esterification reaction in a kneading device for 1 h. After the reaction was completed, the esterification reactant was added into (0-5° C.) ice water consisting of 132 g of ice and 396 g of water for dilution, and then 71 g of sodium bicarbonate was used to adjust the pH to 4.-5.

[0042] The sodium sulfate aqueous solution of this reactive blue dye is subjected to membrane separation operation in a polyacrylonitrile roll-type membrane separation device with a molecular weight cut-off of 300-8000, and the membran...

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Abstract

The invention belongs to the field of sanitation and refers to a kind of sanitation manufacturing method of reactive brilliant blue KNR based on velum-seperating. This invention makes the colour base of the reactive brilliant blue KNR washed, dried, esterified, diluted, neutralized, separated and gets the concentrated solution of reactive brilliant blue KNR and effusion solution of sodium sulfate. The effusion solution of sodium sulfate can be used as the scouring water of next group of reactive brilliant blue KNR and reuses the wasted water. The invention is also adaptable to the sanitation manufacturing method of allied reactive dyeing products.

Description

technical field [0001] The invention belongs to the technical field of clean production, and in particular relates to a method for obtaining high-purity reactive brilliant blue KNR products based on membrane separation technology, and reusing the separated waste water. technical background [0002] Reactive brilliant blue KNR (C.I.Reactive Dye Blue 19) 4-(3′-β-hydroxyethyl sulfone-sulfate monosodium salt-aniline)-1-amino-anthraquinone-2-sodium sulfonate, its structural formula is as follows (1): [0003] [0004] This dye is one of the bulk products in the field of reactive dyes. It has bright color and excellent color fastness. It is suitable for various dyeing methods such as exhaust dyeing, pad dyeing, and cold pad-batch. It has a wide range of applications and a large market demand. [0005] The usual manufacturing method of Reactive Brilliant Blue KNR is, firstly, the reactive brilliant blue KNR chromogen compound 4-(3'-β-hydroxyethyl sulfone-aniline)-1-amino-anthra...

Claims

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Application Information

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IPC IPC(8): B01D61/00B01D69/02C09B62/004
Inventor 伍登熙苏鹤祥李光明何毅钱明生赵建夫
Owner SHANGHAI HUAYI GRP CO