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Method for producing disperse dye by using 1-aminoanthraquinone DMF residues

A technology of aminoanthraquinone and disperse dyes, which is applied in the direction of nitro/nitroso dyes, azo dyes, organic dyes, etc. It can solve the problems of difficult separation and purification, waste of resources, low cost, etc., and achieve high economic and environmental benefits Effect

Inactive Publication Date: 2021-03-26
YANGZHOU RIXING BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the content of each component in the waste residue is not high, it is difficult to separate and purify, and it has not been able to be treated for many years. It can only be incinerated as "hazardous waste", which not only produces secondary pollution, but also causes a lot of waste of resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method utilizing 1-aminoanthraquinone DMF residue to produce disperse dyes, specifically comprising the following steps:

[0027] (1) Add an ethanol solution of sodium sulfite to the 1-aminoanthraquinone DMF residue, and react at a temperature of 150° C. for 0.5 h. After the reaction, press filter and wash to obtain a solid that is mixed nitric acid. The amount of sodium sulfite is 1 / 2 of the DMF residue quality 65%; the dosage ratio of sodium sulfite to ethanol is 1g:50mL;

[0028] (2) Add concentrated nitric acid into the mononitration pot, then add the mixed nitric acid in step (1), and react at 150°C for 1 hour at a temperature control. After the reaction, the material is distilled and diluted, and then washed by pressure filtration. Carry out beating treatment, obtain solid-nitration beating material; The mass ratio of described concentrated nitric acid and mixed nitric acid is 4.5:1;

[0029] (3) Add water, liquid caustic soda and mononitration beating material...

Embodiment 2

[0032] The method utilizing 1-aminoanthraquinone DMF residue to produce disperse dyes specifically comprises the following steps:

[0033] (1) Add an ethanol solution of sodium sulfite to the 1-aminoanthraquinone DMF residue, and react at a temperature of 150° C. for 0.5 h. After the reaction, press filter and wash to obtain a solid that is mixed nitric acid. The amount of sodium sulfite is 1 / 2 of the DMF residue quality 65%; the dosage ratio of sodium sulfite to ethanol is 1g:50mL;

[0034] (2) Add concentrated nitric acid into the mononitration pot, then add the mixed nitric acid in step (1), and react at 150°C for 1 hour at a temperature control. After the reaction, the material is distilled and diluted, and then washed by pressure filtration. Carry out beating treatment, obtain solid-nitration beating material; The mass ratio of described concentrated nitric acid and mixed nitric acid is 4.5:1;

[0035] (3) Add water, liquid caustic soda and mononitration beating material...

Embodiment 3

[0038] The method utilizing 1-aminoanthraquinone DMF residue to produce disperse dyes specifically comprises the following steps:

[0039] (1) Add an ethanol solution of sodium sulfite to the 1-aminoanthraquinone DMF residue, and react at a temperature of 150° C. for 0.5 h. After the reaction, press filter and wash to obtain a solid that is mixed nitric acid. The amount of sodium sulfite is 1 / 2 of the DMF residue quality 65%; the dosage ratio of sodium sulfite to ethanol is 1g:50mL;

[0040] (2) Add concentrated nitric acid into the mononitration pot, then add the mixed nitric acid in step (1), and react at 150°C for 1 hour at a temperature control. After the reaction, the material is distilled and diluted, and then washed by pressure filtration. Carry out beating treatment, obtain solid-nitration beating material; The mass ratio of described concentrated nitric acid and mixed nitric acid is 4.5:1;

[0041] (3) Add water, liquid caustic soda and mononitration beating material...

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PUM

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Abstract

The invention discloses a method for producing disperse dyes by using 1-amino anthraquinone DMF residues, and belongs to the technical field of chemical fuel production. The method comprises the following steps: carrying out subtreatment, primary nitrification and refining treatment on 1-amino anthraquinone DMF residues to obtain a mixture with the content of 1, 8-dinitroanthraquinone being 80% orabove; dissolving the mixture in an organic solvent, grinding and uniformly mixing, adding chlorobenzene and sodium hydrosulfide into the mixture, reacting, and filtering after the reaction is finished to obtain the product disperse dye solvent yellow. The method comprises the following steps: carrying out preliminary pretreatment on 1-amino anthraquinone DMF residues to obtain a mixture with higher content of 1, 8-dinitroanthraquinone, and taking the mixture as a raw material to prepare the solvent yellow product.

Description

technical field [0001] The invention belongs to the technical field of chemical fuel production, and in particular relates to a method for producing disperse dyes by using 1-aminoanthraquinone DMF residue. Background technique [0002] 1-Aminoanthraquinone is one of the most important varieties of anthraquinone series intermediates, and the current domestic annual output is about 20,000 tons. A large amount of waste residue is produced during its production process. The composition of the waste residue is complex, mainly containing 1-nitroanthraquinone, 2-nitroanthraquinone, 1,5-dinitroanthraquinone, 1,6-dinitroanthraquinone Impurities such as quinone, 1,7-dinitroanthraquinone, 1,8-dinitroanthraquinone, a small amount of unreacted anthraquinone and tar produced during the refining process. Since the content of each component in the waste residue is not high, it is difficult to separate and purify, and it has been unable to be treated for many years. It can only be incinerat...

Claims

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Application Information

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IPC IPC(8): C09B67/38C09B51/00
CPCC09B67/008C09B51/00
Inventor 丁振中张超朱萌陈娇朱文瑞王士刚
Owner YANGZHOU RIXING BIO TECH