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Method for improving production efficiency of vat dark blue BO

A production efficiency, dark blue technology, applied in chemical instruments and methods, organic dyes, anthracene dyes, etc., can solve the problems of large production input, complex process steps, low production efficiency, etc., to reduce losses, speed up reaction rate, performance Balanced improvement effect

Inactive Publication Date: 2020-02-14
安徽融创化工科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among them, the vat blue BO dye is an anthrone vat dye. As a vat dye with a large production and sales volume, the production and preparation process still has problems such as complicated process steps, serious pollution of three wastes, large production input, low production efficiency, and high cost.

Method used

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  • Method for improving production efficiency of vat dark blue BO

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] A method for improving the production efficiency of reduced dark blue BO, using three synthetic methods of triethylene glycol, primary mother liquor, and secondary mother liquor to carry out simultaneously, comprising the following steps:

[0023] Step 1: While synthesizing the triethylene glycol process, add 1077 liters of mother liquor from the metering tank to the mother liquor secondary concentration kettle, distill out 485 liters of water under reduced pressure, and add the material to the condensation kettle, start stirring, and 36 kg of Water sodium acetate and 255 kg of potassium hydroxide are successively put into a 2000L condensation pot, heated to 115°C with 0.24Mpa steam for 45 minutes to heat up to 126°C for later use;

[0024] The invention also provides the processing technology of the triethylene glycol process as follows: washing and drying the condensation kettle, adding 450 kilograms of triethylene glycol from the metering tank to the kettle, starting ...

Embodiment 2

[0035] A method for improving the production efficiency of reduced dark blue BO, using three synthetic methods of triethylene glycol, primary mother liquor, and secondary mother liquor to carry out simultaneously, comprising the following steps:

[0036] Step 1: While synthesizing the triethylene glycol process, add 1078 liters of mother liquor from the metering tank to the mother liquor secondary concentration kettle, distill 488 liters of water under reduced pressure, and add the material to the condensation kettle, start stirring, and 37 kg of Water sodium acetate and 258 kg of potassium hydroxide are successively put into a 2000L condensation pot, heated to 118°C with 0.25Mpa steam for 48 minutes to heat up to 128°C for later use;

[0037] Step 2: Add 1155 liters of secondary mother liquor from the metering tank to the mother liquor secondary concentration kettle, and add 578 liters of water after decompression distillation to the condensation kettle, start stirring, and 31...

Embodiment 3

[0048] A method for improving the production efficiency of reduced dark blue BO, using three synthetic methods of triethylene glycol, primary mother liquor, and secondary mother liquor to carry out simultaneously, comprising the following steps:

[0049] Step 1: While synthesizing the triethylene glycol process, add 1080 liters of mother liquor from the metering tank to the mother liquor secondary concentration kettle, distill 500 liters of water under reduced pressure, and then add the material to the condensation kettle, start stirring, and 38 kg of Water sodium acetate and 260 kg of potassium hydroxide are successively put into a 2000L condensation pot, heated to 120°C with 0.26Mpa steam for 50 minutes to heat up to 130°C for later use;

[0050] Step 2: Add 1160 liters of secondary mother liquor from the metering tank to the secondary concentration kettle of mother liquor, and add 580 liters of water after decompression distillation to the condensation kettle, start stirring...

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Abstract

The invention relates to the technical field of new material processing, and discloses a method for improving the production efficiency of vat dark blue BO. The process steps are integrated and optimized; the problem of low raw material utilization rate in vat dark blue BO production is solved from the aspect of reducing consumables; waste gas and waste liquid generated in the production process are repeatedly recycled; in the production process of the vat dark blue BO, three sets of synthesis methods of triethylene glycol, primary mother liquor and secondary mother liquor are carried out at the same time; the process conditions of the steps are tightly controlled, the reaction rate is accelerated, the loss is reduced, and the reaction time can be prevented from being too long; the dye hascharacteristics of crystallization and precipitation, peroxidation can be avoided, the prepared vat dye has excellent comprehensive performance, the process can well solve the disadvantages of a conventional anthrone vat dye during dyeing, and the comprehensive utilization rate of the processing raw material is improved so as to reduce the cost and improve the recycling performance of the recovered raw material.

Description

technical field [0001] The invention belongs to the technical field of new material processing, and in particular relates to a method for improving the production efficiency of reduced dark blue BO. Background technique [0002] Vat dyes refer to being reduced under alkaline conditions to color the fibers, and then oxidized to restore the original insoluble dyes on the fibers for dyeing cellulose fibers; the insoluble vat dyes are made into sodium sulfate esters, It can be turned into a soluble vat dye. It is mainly used for dyeing cotton fabrics and polyester-cotton blended fabrics. It is a very important dye for cellulose fiber dyeing. It is also a commonly used dye for dyeing other cellulose fibers such as viscose fiber and vinylon. The dyeing principle is: when dyeing, the dye is first reduced to a soluble leucosome sodium salt under the action of a strong reducing agent and alkali, which has affinity for cellulose fibers and can dye fibers. After the fiber is dyed, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B9/02C09B67/28
CPCC09B9/02C09B67/0077
Inventor 张建威代余容钟鹏飞胡梦刚
Owner 安徽融创化工科技股份有限公司
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