Ammonium thiosulfate desulfurization catalyst from coking wastewater and preparation and implementation methods therefor

A technology of ammonium thiosulfate and desulfurization catalyst, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problems that the efficiency cannot meet the demand, etc.

Active Publication Date: 2015-10-28
SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has the ability to accelerate a certain reaction without affecting other reactions, which is called the selectivity of the catalyst. The catalysts used in different reactions are different. There are solid-phase or liquid-type catalysts, and the current methods or catalysts The efficiency can not meet the demand, the catalyst used in the present invention is a liquid phase catalyst, can fully contact with the reaction solution, improve the reaction efficiency and speed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An ammonium thiosulfate desulfurization catalyst in coking waste liquid and its implementation method comprise the following components by mass ratio:

[0023] Ammonium dinuclear phthalocyanine cobalt sulfonate: 90%,

[0024] Molybdenum pentachloride: 2%,

[0025] Disodium edetate: 8%,

Embodiment 2

[0027] An ammonium thiosulfate desulfurization catalyst in coking waste liquid and its implementation method comprise the following components by mass ratio:

[0028] Ammonium dinuclear cobalt phthalocyanine sulfonate: 95%,

[0029] Molybdenum pentachloride: 1%,

[0030] Disodium EDTA: 4%

Embodiment 3

[0032] An ammonium thiosulfate desulfurization catalyst in coking waste liquid and its implementation method comprise the following components by mass ratio:

[0033] Ammonium dinuclear phthalocyanine cobalt sulfonate: 85%,

[0034] Molybdenum pentachloride: 4%,

[0035] Disodium EDTA: 11%.

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Abstract

The present invention discloses an ammonium persulfate catalyst extracted from coking wastewater and an implementation method therefor. The catalyst comprises the following components in percentage by mass: 85-95% of binuclear cobalt phthalocyanine ammonium sulphonate, 1-5% of molybdenum pentachloride, and 4-15% of disodium EDTA. The bath temperature of the coking wastewater is 65 DEG C. The amount of the catalyst to be added is 1%. The reaction can be performed by blowing air with 12-hour reaction time and a pH range of 7-8.

Description

technical field [0001] The invention belongs to the technical field of catalysts, in particular to an ammonium thiosulfate desulfurization catalyst in coking waste liquid and its preparation and implementation method. Background technique [0002] In addition to most of the water, the waste liquid generated in the desulfurization production process mainly contains ammonium sulfate, ammonium thiosulfate and ammonium thiocyanate. It is important to explore the separation and recovery of ammonium thiocyanate and ammonium thiosulfate in the desulfurization waste liquid. economic significance. Ammonium thiocyanate is generally extracted by extraction, and if the ammonium sulfate and ammonium thiosulfate in the extraction mother liquor crystallize out, it will lead to the mixed precipitation of ammonium sulfate and ammonium thiosulfate, which cannot be reused in industry, so the thiosulfate Ammonium is further oxidized to ammonium sulfate, and pure ammonium sulfate is precipitat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C01C1/246
Inventor 皇甫慧君王燕沈寒晰蓝伟张金峰郑健均司心生任蕊张玉娟
Owner SHAANXI RES DESIGN INST OF PETROLEUM CHEM IND
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