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Method for recovering sulfur from byproduct of acid gas generated in production of rubber chemicals

A technology of rubber additives and acid gas, applied in the direction of sulfur preparation/purification, etc., can solve problems such as unsatisfactory catalytic effect, side reactions, and large steam consumption, and achieve advanced and mature process routes, large load elasticity, and convenient operation Effect

Active Publication Date: 2009-10-28
SHANDONG SUNSINE CHEM
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Problems solved by technology

Moreover, the catalysts used are all natural bauxite, and the catalytic effect is extremely unsatisfactory, but there are still a large number of side reactions in the process, and a large amount of steam will be consumed, and a lot of waste gas and waste water will be generated.

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  • Method for recovering sulfur from byproduct of acid gas generated in production of rubber chemicals

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specific Embodiment approach

[0030] As shown in the accompanying drawings, a specific embodiment of the present invention is as follows:

[0031] The acid gas from the accelerator MBT workshop and DPG workshop enters the carbon disulfide recovery condensing cooler after being washed with water to recover carbon disulfide, aniline and benzothiazole in the raw gas, and the recovered materials are returned to the workshop to participate in the reaction, recycled and reused, and then All the acid gas is introduced into the combustion furnace for sulfur production, and in the combustion furnace for sulfur production, the O 2 Strictly control the air distribution ratio, so that H 2 S burns to produce SO 2 The amount satisfies H 2 S / SO 2 Close to the theoretical value 2, H 2 S and SO 2 A high-temperature thermal reaction occurs in the furnace to generate gaseous sulfur. The reaction temperature in the sulfur furnace is 800-1250°C to partially burn hydrogen sulfide to generate sulfur dioxide and water, and ...

Embodiment 2

[0034] Concrete steps of the present invention are as follows:

[0035] (1) The acid gas from the upstream workshop is washed and condensed to recover carbon disulfide, aniline, and benzothiazole, and the recovered materials are returned to the upstream workshop for recycling;

[0036] (2) The acid gas after condensing and cooling to recover carbon disulfide is separated from the acid water by the acid gas separator tank, and then preheated by the steam heat tracing pipe, then enters the sulfur making combustion furnace and the air sent by the Roots blower is adjusted by the ratio and The feedback data of the exhaust gas online analyzer realizes the cascade adjustment of the air distribution, so that the amount of sulfur dioxide generated by the combustion of hydrogen sulfide meets the requirements of H 2 S / SO 2 Close to 2:1; hydrogen sulfide and sulfur dioxide undergo a high-temperature thermal reaction under the action of a catalyst to generate elemental sulfur and water; a...

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Abstract

The invention discloses a method for reclaiming sulfur from a byproduct of acid gas generated in the production of rubber chemicals. The method overcomes the defects that the conventional Claus furnace has low hydrogen sulfide transformation reclaiming ratio, high energy consumption and the like, and adopts a novel process to generate the sulfur by mixing hydrogen sulfide and air according to a volume ratio of 1:2 in a sulfur production combustion furnace, and adopting a straight flow partial combustion process to perform high temperature hot reactions, namely a first-stage high temperature hot reaction, a second-stage high temperature hot reaction, a third-stage catalytic conversion and a fourth-stage condensation cooling. The method has the advantages of advanced and mature process route, safety and reliability, high automation degree, convenient operation and low energy consumption.

Description

(1) Technical field [0001] The invention relates to a method for converting by-product hydrogen sulfide acid gas into sulfur during chemical synthesis, in particular to a method for recovering sulfur from the acid gas by-produced in the production of rubber additives. (2) Background technology [0002] Sulfur is an important chemical raw material. Converting hydrogen sulfide into sulfur is an essential link in petrochemical, natural gas chemical and coal chemical processes. The level of sulfur recovery technology is directly related to the level of environmental governance and development cycle of related enterprises. Economic capacity, with the rapid development of my country's chemical industry, there is an urgent need to gradually form a sulfur recovery technology with independent intellectual property rights through the combination of production, learning and research on the basis of introducing, digesting and absorbing foreign advanced sulfur recovery technology. The deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/04
Inventor 徐承秋刘经福秦宝智徐均邵峰
Owner SHANDONG SUNSINE CHEM
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