Desulfurization process containing H<2>S acidic gas

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...

AI Technical Summary

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 hydrogenation reaction, waste heat recovery, rapid cooling absorption, regeneration, solvent circulation, solvent configuration, storage, and incineration heat recovery, and has complex processes, large floor space, high investment and operating costs, Disadvantages such as high energy consumption

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