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Method for preparing manganese sulfide coproduced with strontium sulfate and ammonium sulfide by using manganese-containing waste liquor produced during production of hydroquinone

A technology of hydroquinone and ammonium sulfide, applied in chemical instruments and methods, ammonium sulfide/polysulfide, manganese compounds, etc., achieves the effects of simple process and production equipment, reduced pollution, significant social and economic benefits

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 strontium 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

[0021] A method for manufacturing manganese sulfide co-producing strontium sulfate and ammonium sulfide with manganese-containing waste liquid produced by producing hydroquinone, comprising the following preparation steps:

[0022] Step A, the 1000kg waste liquid (wherein, comprising 120kg manganese sulfate, 15kg ammonium sulfate and 20kg sulfuric acid) produced by the production of hydroquinone is subjected to suction filtration with a suction filter;

[0023] Step B, the obtained elemental residue filter cake of suction filtration in step A is used to develop other products;

[0024] Step C, transfer the filtrate obtained by suction filtration in the step A to the reactor, drop into the strontium sulfide solution and react simultaneously, and the mass ratio between the filtrate and the strontium sulfide solution is 1: 0.59; The reaction generates manganese sulfide, strontium sulfate and ammonium sulfide. of mixture I;

[0025] Step D, the mixture I obtained in step C is fil...

Embodiment 2

[0031] A method for manufacturing manganese sulfide co-producing strontium sulfate and ammonium sulfide with manganese-containing waste liquid produced by producing hydroquinone, comprising the following preparation steps:

[0032] Step A, the 1000kg waste liquid (wherein, comprising 120kg manganese sulfate, 15kg ammonium sulfate and 20kg sulfuric acid) produced by the production of hydroquinone is subjected to suction filtration with a suction filter;

[0033] Step B, the obtained elemental residue filter cake of suction filtration in step A is used to develop other products;

[0034] Step C, transfer the filtrate obtained by suction filtration in the step A to the reactor, drop into the strontium sulfide solution and react simultaneously, and the mass ratio between the filtrate and the strontium sulfide solution is 1: 0.79; The reaction generates manganese sulfide, strontium sulfate and ammonium sulfide. of mixture I;

[0035] Step D, the mixture I obtained in step C is fil...

Embodiment 3

[0041] A method for manufacturing manganese sulfide co-producing strontium sulfate and ammonium sulfide with manganese-containing waste liquid produced by producing hydroquinone, comprising the following preparation steps:

[0042] Step A, the 1000kg waste liquid (wherein, comprising 120kg manganese sulfate, 15kg ammonium sulfate and 20kg sulfuric acid) produced by the production of hydroquinone is subjected to suction filtration with a suction filter;

[0043] Step B, the obtained elemental residue filter cake of suction filtration in step A is used to develop other products;

[0044] Step C, transfer the filtrate obtained by suction filtration in the step A to the reactor, drop into the strontium sulfide solution and react simultaneously, and the mass ratio between the filtrate and the strontium sulfide solution is 1: 0.99; The reaction generates manganese sulfide, strontium sulfate and ammonium sulfide. of mixture I;

[0045] Step D, the mixture I obtained in step C is fil...

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Abstract

The invention relates the technical filed of utilization of manganese-containing waste liquor produced during production of hydroquinone, in particular to a method for preparing manganese sulfide coproduced with strontium sulfate and ammonium sulfide by using the manganese-containing waste liquor produced during the production of hydroquinone. The method mainly comprises the following steps of: performing suction filtration on the waste liquor produced by hydroquinone by using a suction filter machine to obtain filtrate, distilling and filtering the filtrate, and performing deep processing on a filter cake to obtain a manganese sulfide product; and distilling the filtrate under a reduced pressure and performing further deep processing on the filtrate respectively to obtain a strontium sulfate product and an ammonium sulfide product respectively. By adopting the method, the waste liquor can be treated completely, environmental pollution caused by waste liquor is relieved, valuable manganese sulfide, strontium sulfate and ammonium sulfide products can be prepared, remarkable social benefit and economic benefit are achieved, and process and production equipment are simple. The method is a relatively practical treatment and utilization method.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/00C01C1/20C01F11/46C02F1/58C02F1/64
Inventor 何云
Owner 何云
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