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Method of removing hydrogen sulfide

A hydrogen sulfide removal technology, applied in chemical instruments and methods, separation methods, organic chemistry, etc., to achieve the effect of improving desulfurization efficiency, high efficiency, and reducing hydrogen sulfide content

Active Publication Date: 2014-06-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are still problems in the desulfurization process of wet desulfurization agent in terms of solution stability, side reaction control and oxidant environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: the synthesis of wet desulfurization agent

[0022] Take 0.015mmol of H 3 [PMo 12 o 40 ], 1mmol of Cu(CH 3 COO) 2 , 0.05 mmol of C 8 h 10 N 4 , dissolved in 10ml distilled water at room temperature. Utilize 1mol / l hydrochloric acid to adjust the pH value of the above solution to keep it at about 4.5. The suspension was transferred to a sealed container and heated to 160°C for 4 days. After the reaction was over, it was naturally cooled to room temperature and filtered to obtain dark red crystal Cu 3 (L) 6 [H 3 (PMo 12 o 40 ) 2 ]·6H 2 O.

Embodiment 2

[0023] Example 2: Simulation of hydrogen sulfide-containing gas

[0024] 0.005gCu 3 (L) 6 [H 3 (PMo 12 o 40 ) 2 ]·6H 2 O was dissolved in 50ml distilled water and poured into the hydrogen sulfide desulfurization reactor. Set the reaction temperature to 50°C and set 1% H 2 S standard gas flow is 15ml / min and O 2 The gas flow rate is 50ml / min. After the gas is stabilized, it is introduced into the hydrogen sulfide desulfurization reactor from the bottom. After passing through the reactor, the hydrogen sulfide hydrogen content in the tail gas is detected by a hydrogen sulfide detector. The experimental results show that the hydrogen sulfide content in the tail gas is 0 when the reaction time is within 2.5 hours. After 2.5 hours, the hydrogen sulfide content in the tail gas gradually increases.

Embodiment 3

[0025] Example 3: Simulation of hydrogen sulfide-containing gas

[0026] 0.001g Cu 3 (L) 6 [H 5 (SiW 12 o 40 ) 2 ]·6H 2 O was dissolved in 10ml of distilled water and poured into the hydrogen sulfide desulfurization reactor. Set the reaction temperature to 65°C and set 1% H 2 S standard gas flow is 100ml / min and O 2 The gas flow rate is 15ml / min. After the gas is stabilized, it is introduced into the hydrogen sulfide desulfurization reactor from the bottom. After passing through the reactor, the hydrogen sulfide hydrogen content in the tail gas is detected by a hydrogen sulfide detector. The experimental results show that the hydrogen sulfide content in the tail gas is 0 when the reaction time is within 6.5 hours. After 6.5 hours, the hydrogen sulfide content in the tail gas gradually increases.

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PUM

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Abstract

The invention relates to a method of removing hydrogen sulfide. The method includes dissolving 0.001-0.010 g of a polyoxometallate adopted as a wet-method desulfurizer into 10-180 mL of distilled water, and feeding a gas mixture containing the hydrogen sulfide into the solution at 10-65 DEG C and under atmospheric pressure to remove the hydrogen sulfide. The structure formula of the polyoxometallate is Cu3(L)6[H3(PMo12O40)2]-nH2O or Cu3(L)6[H5(SiW12O40)2]-nH2O, wherein the L is C8H10N4. The desulfurizer adopted by the method is simple in preparation method, high in oxidation performance, high in stability and free of pollution to pipelines and the environment, and is environmental-friendly. The hydrogen sulfide removing efficiency in the whole process is high and elemental sulfur can be obtained. Process equipment is simple and low in investment.

Description

Technical field: [0001] The invention relates to a method for removing hydrogen sulfide gas by using a Keggin type metal organic framework polyoxometalate. Background technique: [0002] Hydrogen sulfide is a highly irritating gas with a strong smell of rotten eggs. The presence of hydrogen sulfide in the gas will not only cause equipment and pipeline corrosion, catalyst poisoning, but also seriously threaten personal safety. my country has strict regulations on the concentration of hydrogen sulfide in the ambient atmosphere, workshop air and industrial waste gas: the maximum concentration of hydrogen sulfide in the ambient atmosphere of residential areas shall not exceed 0.01mg / m 3 ;The maximum concentration of hydrogen sulfide in the air of the workshop working place shall not exceed 10mg / m 3 ;The concentration of hydrogen sulfide in city gas shall not exceed 20mg / m 3 ; The concentration of hydrogen sulfide in the exhaust gas of oil refineries is required to be purified ...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/52C07F19/00
Inventor 路洋蒲文晶王艳丽徐延军路昆王天来王宏伟
Owner PETROCHINA CO LTD
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