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Desulfurizing binary Fe-alkali catalyst

A desulfurization catalyst, catalyst technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problem of large amount of complexing agent, single desulfurization purification, equipment corrosion Serious problems, to achieve the effect of strong catalytic activity, less dosage, and large sulfur capacity

Inactive Publication Date: 2004-02-11
SUZHOU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of desulfurization agent has poor complexation, overall desulfurization and regeneration performance is better, and the price is low, but the amount of complexing agent is relatively large, and the stability is related to the pH value of the solution.
The above-mentioned methods and desulfurization catalysts have their own advantages, but there are some defects to some extent, such as some have small sulfur capacity and low desulfurization efficiency; In the process of use, new secondary pollution will be generated, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment one: a kind of binary iron-alkali desulfurization catalyst, its component and weight percent are:

[0036] Potassium hexacyanoferrate (III) 70%;

[0037] Hydroquinone 25%;

[0038] Phosphorous compounds 5%.

[0039] The above-mentioned desulfurization catalyst and sodium carbonate are prepared into an alkaline desulfurization liquid, wherein the total iron content is 0.5-2.0 g / l, polyphenols are ≥0.2 g / l, the pH value of the solution is 8-10, and the Hydrogen sulfide content 0.5~2g / NM 3 , the desulfurization efficiency can reach 99%.

Embodiment 2

[0040] Embodiment two: a kind of binary iron-alkali desulfurization catalyst, its component and weight percent are:

[0041] Sodium hexacyanoferrate (II) 70%;

[0042] Hydroquinone 25%;

[0043]Phosphorous compounds 5%.

[0044] The above-mentioned desulfurization catalyst and sodium carbonate are prepared into an alkaline desulfurization liquid, wherein the total iron content is 0.05-0.5g / l, polyphenols are ≥0.2g / l, the pH value of the solution is 8-10, and the Hydrogen sulfide content≤500mg / NM 3 The total sulfur content after desulfurization is reduced to ~5mg / NM 3 .

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PUM

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Abstract

A desulfurizing Fe-alkali catalyst contains hexacyanoferrate and / or hexacyanoferrite, and polyphenolic substance chosen from hydroquinone, resorcin, catechol, etc.. Its advantages are high complex system stability, absorption speed and sulfur content, low dosage, and no environmental pollution.

Description

technical field [0001] The invention relates to a wet oxidation desulfurization catalyst, in particular to an iron-alkali desulfurization catalyst of a binary catalytic system. The desulfurization catalyst is mainly used in the desulfurization, decarburization and decyanation of semi-water gas and shift gas in the ammonia synthesis industry; the desulfurization, decarburization and decyanation of urban pipeline gas and flue gas in other industries; the desulfurization of waste gas in oil fields and refineries, etc. . Background technique [0002] With the rapid development of modern industry, the content of harmful gases such as hydrogen sulfide, sulfur dioxide, hydrogen cyanide and carbon dioxide discharged into the atmosphere is increasing day by day, which has caused serious environmental pollution and directly endangered human health. In order to protect the living environment of human beings, it is increasingly urgent and important to develop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01J31/18
Inventor 华南平杨平杜玉扣狄俊伟
Owner SUZHOU UNIV