Desulfurization process containing H*S acidic gas

A desulfurization process and acid gas technology, applied in the direction of dispersed particle separation, chemical instruments and methods, separation methods, etc., can solve the problems of high investment cost and operation cost, failure to meet emission standards, large floor area, etc., and achieve reduction Operating cost, elimination of consumption, high sulfur recovery effect

Inactive Publication Date: 2009-09-16
BEIJING HANGXINGSHIJI TECH DEV
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Problems solved by technology

The theoretical sulfur recovery rate of the four-stage conversion is 99.5%, and the actual sulfur recovery rate is 98.31%. There will be about 1.7-2.1% of sulfur-containing gases in the exhaust gas, which may not meet the emission standards.
The second type of process requires systems such as hyd

Method used

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  • Desulfurization process containing H*S acidic gas

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Embodiment Construction

[0020] Such as figure 1 As shown, the refinery unit containing H 2 S acid gas, the composition contains H 2 S, SO 2 , ammonia, hydrocarbons and other substances, with a sulfur content of 500,000 PPM. The acid gas enters the combustion furnace after the condensed clear water is removed by the separation tank. According to the oxygen demand of the sulfur production reaction, the amount of air entering the furnace is strictly controlled through ratio adjustment, and the ammonia and hydrocarbons in the acid gas are completely combusted and decomposed through combustion. About 65-68% H in the sulfur combustion furnace 2 S undergoes a high-temperature Claus reaction to generate sulfur. remaining H 2 About 1 / 3 of S is converted to SO 2 , control H 2 S / SO 2 For 2 / 1, the required air is supplied by the blower. In order to achieve a higher sulfur conversion rate, it is necessary to control the H 2 S / SO 2 is 2 / 1, the control method is to adopt H 2 S and SO 2 Analyze the inst...

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Abstract

The invention relates to a desulfurization process containing acidic gas H2s, comprising the following steps: high temperature cross reaction is carried out in a combustion furnace; 3 cross reactions of varying levels are respectively carried out in a primary transformation reactor, a secondary transformation reactor and a tertiary transformation reactor; a ferric oxide desulfurization reaction is carried out in a fourthly oxidation sweetening reactor; wherein, process gas produced after the high temperature cross reaction and 3 cross reactions of varying levels passes through a primary cooler, a secondary cooler, a tertiary cooler and a fourthly condenser for hydrocooling; condensed liquid sulfur is collected; in the ferric oxide desulfurization reaction, ferric oxide is used as desulfurization catalyst for reaction, then the liquid sulfur enters the fourthly condenser, and the condensed liquid sulfur is collected; the process gas is discharged after removing sulfur fog drops. The invention can be used to carry out desulfurization treatment on acidic gas of oil refining devices, natural gas production devices or other industrial devices containing H2S acidic gas.

Description

technical field [0001] The present invention relates to H 2 Desulfurization process of S acid gas. Background technique [0002] At present, the Claus transformation reaction is mainly used for H 2 S acid gas desulfurization and sulfur recovery, the reaction principle of the Claus transformation reaction is as follows: 2H 2 S+3O 2 →2SO 2 +2H 2 O; [0003] 4H 2 S+2SO 2 →3S 2 +4H 2 o [0004] Based on the Claus reaction, many kinds of H-containing 2 The sulfur recovery process of S acid gas mainly has two types, the first type is the sub-dew point process of three-stage or four-stage conversion, such as MCRC (Mineral and Chemical Resources Corporation of Canada) sub-dew point process and super Claus method, the so-called The sub-dew point process is a process mainly characterized by Claus reaction at a temperature lower than the sulfur dew point; the second type is the secondary conversion plus Scott tail gas treatment process, and Scott tail gas treatment is mainl...

Claims

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Application Information

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IPC IPC(8): B01D53/52
Inventor 胡宗敏祁怡钢
Owner BEIJING HANGXINGSHIJI TECH DEV
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