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Method for preparing co-product of manganese sulfide and ammonium sulfate as well as ammonium sulfide by manganese-containing waste liquid obtained by producing hydroquinone

A technology of hydroquinone and ammonium sulfide, which is applied in chemical instruments and methods, ammonium sulfide/polysulfide, ammonium sulfate, etc., achieves simple process and production equipment, reduces pollution, and has significant social and economic benefits. Effect

Inactive Publication Date: 2011-07-06
何云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant report on the method of producing manganese sulfide and co-producing ammonium sulfate and ammonium sulfide with the manganese-containing waste liquid produced by the production of hydroquinone.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for producing manganese sulfide co-production ammonium sulfate and ammonium sulfide with manganese-containing waste liquid produced by producing hydroquinone, comprising the following preparation steps:

[0020] Step A, 1000kg waste liquid (wherein, comprising 120kg manganese sulfate, 15kg ammonium sulfate and 20kg sulfuric acid) produced by hydroquinone is suction filtered with a suction filter;

[0021] Step B, using the elemental residue filter cake obtained by suction filtration in step A to develop other products;

[0022] Step C, transfer the filtrate obtained by suction filtration in step A to the reactor, and simultaneously put into the ammonium sulfide solution for reaction, the mass ratio between the filtrate and the ammonium sulfide solution is 1: 0.25; the reaction generates manganese sulfide, ammonium sulfate and ammonium sulfide Mixture I;

[0023] Step D, filtering the mixture I obtained in step C with a filter;

[0024] Step E, the filter cake...

Embodiment 2

[0028] A method for producing manganese sulfide co-production ammonium sulfate and ammonium sulfide with manganese-containing waste liquid produced by producing hydroquinone, comprising the following preparation steps:

[0029] Step A, 1000kg waste liquid (wherein, comprising 120kg manganese sulfate, 15kg ammonium sulfate and 20kg sulfuric acid) produced by hydroquinone is suction filtered with a suction filter;

[0030] Step B, using the elemental residue filter cake obtained by suction filtration in step A to develop other products;

[0031] Step C, transfer the filtrate obtained by suction filtration in step A to the reactor, and simultaneously put into the ammonium sulfide solution for reaction, the mass ratio between the filtrate and the ammonium sulfide solution is 1: 0.45; the reaction generates manganese sulfide, ammonium sulfate and ammonium sulfide Mixture I;

[0032] Step D, filtering the mixture I obtained in step C with a filter;

[0033] Step E, the filter cake...

Embodiment 3

[0037] A method for producing manganese sulfide co-production ammonium sulfate and ammonium sulfide with manganese-containing waste liquid produced by producing hydroquinone, comprising the following preparation steps:

[0038] Step A, 1000kg waste liquid (wherein, comprising 120kg manganese sulfate, 15kg ammonium sulfate and 20kg sulfuric acid) produced by hydroquinone is suction filtered with a suction filter;

[0039] Step B, using the elemental residue filter cake obtained by suction filtration in step A to develop other products;

[0040] Step C, transfer the filtrate obtained by suction filtration in step A to the reactor, and simultaneously put into the ammonium sulfide solution for reaction, the mass ratio between the filtrate and the ammonium sulfide solution is 1:0.65; the reaction generates manganese sulfide, ammonium sulfate and ammonium sulfide Mixture I;

[0041] Step D, filtering the mixture I obtained in step C with a filter;

[0042] Step E, washing and dryi...

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PUM

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Abstract

The invention relates to the technical field of the utilization of manganese-containing waste liquid obtained by producing hydroquinone, in particular to a method for preparing co-product of manganese sulfide and ammonium sulfate as well as ammonium sulfide by manganese-containing waste liquid obtained by producing hydroquinone. The method mainly comprises the steps of: firstly, leaching the manganese-containing waste liquid obtained by producing hydroquinone by a leaching machine, and obtaining filtrate for distilling and filtering; carrying out deep processing on a filter cake, and obtaining the manganese sulfide product; and then carrying out reduced pressure distillation on the filtrate, respectively carrying out further deep processing, and obtaining the ammonium sulfate and the ammonium sulfide. The method leads the waste liquid to be cleanly removed so as to reduce the pollution of the waste liquid for the environment, and can be used for preparing the valuable manganese sulfide, ammonium sulfate and ammonium sulfide, thus not only being remarkable in social benefit and economic benefit, but also being simple in technique and production equipment; therefore, the invention is a more practical processing and utilizing method.

Description

technical field [0001] The invention relates to the technical field of utilization of manganese-containing waste liquid produced in the production of hydroquinone, in particular to a method for producing manganese sulfide and co-producing ammonium sulfate and ammonium sulfide with the manganese-containing waste liquid produced in the production of hydroquinone. technical background [0002] Hydroquinone is an important organic intermediate, which was developed and put into industrial production in my country in the 1970s. At present, hydroquinone is mainly produced by the aniline-manganese dioxide process in China. Compared with the foreign phenol-hydrogen peroxide process, this process has the advantages of high product purity and less impurities. But its disadvantage is that the discharge of waste liquid is large. Under normal conditions, there are about 40 tons of manganese-containing wastewater for every ton of hydroquinone produced. The chemical composition in the man...

Claims

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Application Information

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IPC IPC(8): C01G45/00C01C1/20C01C1/24C01C1/244C02F1/58C02F1/64
Inventor 何云
Owner 何云
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