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A kind of preparation method of ammonium thiosulfate desulfurization catalyst in coking waste liquid

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

Active Publication Date: 2018-03-30
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] A kind of ammonium thiosulfate desulfurization catalyst in coking waste liquid comprises following composition by mass ratio:

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

[0024] Molybdenum pentachloride: 2%,

[0025] Disodium edetate: 8%,

Embodiment 2

[0027] A kind of ammonium thiosulfate desulfurization catalyst in coking waste liquid comprises following composition by mass ratio:

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

[0029] Molybdenum pentachloride: 1%,

[0030] Disodium EDTA: 4%

Embodiment 3

[0032] A kind of ammonium thiosulfate desulfurization catalyst in coking waste liquid comprises following composition by mass ratio:

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

[0034] Molybdenum pentachloride: 4%,

[0035] Disodium EDTA: 11%.

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Abstract

A catalyst for extracting ammonium sulfate from coking waste liquid and its implementation method, comprising the following components by mass ratio: dinuclear phthalocyanine cobalt ammonium sulfonate: 85-95%, molybdenum pentachloride: 1-5%, ethylenediaminetetra Disodium acetate: 4-15%, the temperature of the coking waste water bath is 65°C, the amount of catalyst added is 1%, the reaction is carried out by blowing air, the reaction time is 12 hours, and the pH is 7-8.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a preparation method of an ammonium thiosulfate desulfurization catalyst in coking waste liquid. Background technique [0002] In addition to most of the water, the waste liquid produced 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 precipitated, which ca...

Claims

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Application Information

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Patent Type & Authority Patents(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