Method for treating waste residue for producing 1-aminoanthraquinone into raw material for producing 1,5(1, 8)-dinitroanthraquinone

A technology of dinitroanthraquinone and aminoanthraquinone is applied in the field of resource utilization of "waste residue", which can solve the problems of unstable composition, small dosage, unstable color and light, etc., and achieve stable product quality, large economic benefits, and market The effect of large capacity

Inactive Publication Date: 2009-12-02
JIANGSU JIHUA CHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of such "waste residue" utilization method are obvious: because the composition of "waste residue" is unstable, the dyeing performance of the obtained dye is poor, and the shade is unstable; the obtained dye is a kind

Method used

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  • Method for treating waste residue for producing 1-aminoanthraquinone into raw material for producing 1,5(1, 8)-dinitroanthraquinone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 100 parts of dry powdery "waste residue" to 400 parts of 93% sulfuric acid, heat to 60-65°C and stir for 1 hour, cool to room temperature, filter, and squeeze out the liquid in the filter cake as much as possible. The filter cake was beaten and filtered in 300 parts of cold water, and then washed with cold water until the pH of the filtrate was greater than 4. The filter cake was dried to obtain 62 parts of mixed nitric acid, which consisted of: 1,8-dinitroanthraquinone 5.64%, 1 , 5-dinitroanthraquinone 6.27%, 1-nitroanthraquinone 62.52%, anthraquinone 18.84%, the rest are 1,6- / 1,7-dinitroanthraquinone, 2-nitroanthraquinone and others Anthraquinone isomers.

Embodiment 2

[0018] Replace 400 parts of 93% sulfuric acid in embodiment 1 with 380 parts of 98% sulfuric acid, other is with embodiment 1, mixed nitrate yield and composition and embodiment 1 are close.

Embodiment 3

[0020] Add 100 parts of dry powdery "waste residue" to 500 parts of 80% nitric acid, heat up to 50°C and stir for 2 hours, cool to room temperature, filter, and squeeze out the liquid in the filter cake as much as possible. The filter cake is beaten in 300 parts of water, filtered, and the filter cake is washed with cold water until the pH of the filtrate is greater than 4, and the filter cake is dried to obtain 56 parts of mixed nitric acid. The composition is: 1.91% of 1,8-dinitroanthraquinone, 1, 5-Dinitroanthraquinone 8.34%, 1-nitroanthraquinone 56.16%, anthraquinone 24.03%, the rest are 1,6- / 1,7-dinitroanthraquinone, 2-nitroanthraquinone and other anthraquinones quinone isomers.

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Abstract

The invention discloses a method for treating waste residue for producing 1-aminoanthraquinone into a raw material for producing 1,5(1, 8)-dinitroanthraquinone. The method treats and removes isomer containing beta-nitroanthraquinone in the waste residue for producing the 1-aminoanthraquinone to obtain mixed nitroanthraquinone (mixed niter for short), and the mixed niter mainly contains the 1,5(1, 8)-dinitroanthraquinone and the 1-aminoanthraquinone and can be used as the raw material for producing the 1,5(1, 8)-dinitroanthraquinone. The method comprises the following steps: crushing 100 portions by mass of dry waste residue for producing the 1-aminoanthraquinone into powder, adding 400 to 500 portions by mass of sulfuric acid or nitric acid into the powder, heating the mixture to between 50 and 65 DEG C, stirring the mixture for 1 to 2 hours, and filtering, washing and drying the mixture to obtain the mixed niter which can be directly used as the raw material for producing the 1,5(1, 8)-dinitroanthraquinone, wherein the 1,5(1, 8)-dinitroanthraquinone can be produced through dinitration reaction of anthraquinone according to the method of CN101423477A, and bulk commodity dye disperse blue 2BLN (C.I. disperse blue 56) is further produced. The method has simple process; and the obtained product has stable quality and obvious economic benefit.

Description

technical field [0001] The invention belongs to the field of dye chemical industry, and relates to a resource utilization method of "waste residue" produced by a solvent method to produce 1-aminoanthraquinone (or 1-nitroanthraquinone). Background technique [0002] 1-Aminoanthraquinone is an important dye intermediate. Since my country successfully developed the solvent process in the 1980s, due to solving the problem of a large amount of wastewater generated in the production process, the product quality has also reached the world's advanced level, quickly replacing The production of large companies such as Germany and Japan has an annual output of more than 10,000 tons. [0003] The solvent method 1-aminoanthraquinone production process is to separate the nitroanthraquinone isomers obtained in the anthraquinone mononitration reaction with DMF solvent to obtain high-purity 1-nitroanthraquinone. Since the nitroanthraquinone isomers left after the separation of 1-nitroanthraq...

Claims

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Application Information

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IPC IPC(8): C07C205/47C07C201/08C07C201/16
Inventor 张劲松屠国锋简卫朱国祥冯全振
Owner JIANGSU JIHUA CHEMICAL CO LTD
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