Industrial production method of disperse violet 26

A production method and technology of dispersing violet, applied in chemical instruments and methods, amino-hydroxyanthraquinone dyes, anthracene dyes, etc., can solve the problem of increasing the cost and difficulty of wastewater treatment, high chroma and COD of wastewater, and low yield of production process and other issues, to achieve the effect of reducing phenol consumption, reducing wastewater chroma and COD, and cleaning production process

Active Publication Date: 2017-06-27
JIANGSU HUAER CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The yield of the original Disperse Violet 26 production process is low, the consumption of phenol is relatively large, and the production wastewater contains phenol and a small amount of chromogenic organic matter, resulting in high chroma and COD of the wastewater, increasing the cost and difficulty of wastewater treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of industrialized production method of disperse violet 26, comprises the steps:

[0018] (1) Condensation:

[0019] A) Turn on the phenol delivery pump, put 3420L of phenol into the 6300L condensation kettle through the phenol metering tank, start the stirring, open the manhole cover, and put 1000kg of 2,3-dichloro-1,4-diaminoanthraquinone and carbonic acid into the kettle Potassium 775kg, after casting, cover the manhole cover and stir for more than 10 minutes;

[0020] B) Open the valve of the oil bath and raise the temperature slowly, gradually raise the temperature of the material in the kettle to 195°C, and keep it warm at 195-198°C for 3 hours to take a sample and test it. The liquid chromatography analysis shows that the content of 38# purple is ≤1.5% and it is qualified; collect the condensation reaction 150L of distillate is obtained from the liquid distilled in the distillate, and the phenol content in the distillate is 60%; 38# purple is the product o...

Embodiment 2

[0049] In a 1000ml four-neck flask, add 800ml of the isolated waste water obtained in step (4) of Example 1, add a small amount of hydrochloric acid under stirring, adjust the pH of the waste water to 6~7, then add 60g of benzene, stir and extract for 1 hour, stop stirring, and then The material was transferred to a 1000ml separatory funnel and allowed to stand for 2 hours to separate the layers.

[0050]With the above layered liquid, first separate the lower waste water layer in a 1000ml beaker, then divide the upper solvent phenol layer into a 250ml retort, and heat up the solvent layer in the retort to distill out the solvent, and the remaining material in the lower part is phenol; The chromaticity of wastewater is reduced from 2000 times to 15 times, and the COD is reduced from 6000 to 450.

Embodiment 3

[0052] In a 1000ml four-neck flask, add 800ml of the isolated waste water obtained in step (4) of Example 1, add a small amount of hydrochloric acid under stirring, adjust the pH of the waste water to 6~7, then add 50g of kerosene, stir and extract for 1 hour, stop stirring, and then The material was transferred to a 1000ml separatory funnel and allowed to stand for 2 hours to separate the layers.

[0053] With the above layered liquid, first separate the lower waste water layer in a 1000ml beaker, then divide the upper solvent phenol layer into a 250ml retort, and heat up the solvent layer in the retort to distill out the solvent, and the remaining material in the lower part is phenol; The chromaticity of wastewater is reduced from 2000 times to 8 times, and the COD is reduced from 5500 to 600.

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PUM

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Abstract

The invention relates to the field of fine chemical engineering, in particular to an industrial production method of disperse violet 26. The industrial production method comprises the following five steps: condensation, separation, filtration, acid precipitation and wastewater treatment; during wastewater treatment, a solvent which is cheap and easy to obtain and recycle is selected for extracting wastewater, and the treated wastewater is very low in chroma and COD and can directly enter a biochemical treatment pool. After adoption of the industrial production method, the yield of the disperse violet 26 is increased, and the consumption of phenol is greatly reduced, so that the raw material consumption and the cost are reduced, the chroma and the COD of the wastewater are reduced, and the purpose of a clean production process is achieved.

Description

technical field [0001] The invention relates to the field of fine chemicals, in particular to an industrial production method of disperse violet 26. Background technique [0002] Disperse Violet 26 is an important disperse dye variety, mainly used for dyeing polyester and its blended fabrics, and can also be used as a solvent dye for coloring plastics and inks. The yield of the original Disperse Violet 26 production process is low, the consumption of phenol is relatively large, and the production wastewater contains phenol and a small amount of chromogenic organic matter, resulting in high chroma and COD of the wastewater, which increases the cost and difficulty of wastewater treatment. Contents of the invention [0003] The invention provides a kind of industrialized production method of disperse violet 26, comprises the steps: [0004] (1) Condensation: Add 2,3-dichloro-1,4-diaminoanthraquinone, phenol and potassium carbonate into the reaction kettle, stir evenly, then ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B1/54
CPCC09B1/547
Inventor 汤学斌侯保元
Owner JIANGSU HUAER CHEM
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