Low concentration acid gas low-sulfur emission sulphur recovery process

A technology of sulfur recovery and acid gas, which is applied in the direction of sulfur preparation/purification, energy input, etc., can solve the problems that waste sulfur can not be effectively used, more safety and environmental pollution, and affect the safety of operators, etc., to achieve scrap disposal Good conditions, good safe operation conditions, and good site environment
CN105293446AActive Publication Date: 2016-02-03山东迅达化工集团有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
山东迅达化工集团有限公司
Publication Date
2016-02-03

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Abstract

The present invention provides a low concentration acid gas low-sulfur emission sulphur recovery process. According to the present invention, low concentration acid gas having a H2S content of less than 5% is treated by a selective oxidation reactor and two adsorption desulfurization towers capable of being connected in a series parallel connection manner so as to achieve the desulfurization purpose; a H2S selective oxidation catalyst is filled in the selective oxidation reactor, and a thermal renewable catalytic oxidation adsorption desulfurization agent is filled in the adsorption desulfurization tower; with the appropriate selections of the catalyst and the desulfurization agent, and the accurate control of each step process condition, the total standard sulfur in the process emission gas is that SO2 is less than or equal to 10 mg / m<3>; with the thermal regeneration, the service life and the desulfurization capacity of the catalytic oxidation adsorption desulfurization agent are substantially improved; and the process has advantages of low-sulfur emission, sulphur recovery rate of close to 100%, long desulfurization agent service life, high desulfurization capacity, less replacement frequency, low cost, good desulfurization agent unloading and scrap treatment conditions, safety, and the like.
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Description

technical field

[0001] The invention relates to a sulfur recovery process, in particular to a low-sulfur discharge sulfur recovery process for low-concentration acid gas. Background technique

[0002] During petrochemical, coal chemical, and coal gasification processes, part of the sulfur contained in raw materials is usually converted into H 2 S, separated to form H 2 The acid gas of S, the acid gas is generally processed through the sulfur recovery process, and the H 2 S is converted to elemental sulfur as much as possible.

[0003] In the operation process of the sulfur recovery unit, there are also two problems of emptying tail gas and solid waste. The tail gas evacuated through the chimney, of which, SO 2 Concentration is a continuous monitoring item, although the upper limit of the current air pollutant comprehensive emission standard GB16297-1996 is 700mg / m 3 It is not difficult to achieve, but there may be more stringent emission standards in the industry or reg...

Claims

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