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Sulfur recycling technique

A sulfur recovery and process technology, applied in the chemical industry, sulfur preparation/purification, sustainable manufacturing/processing, etc., can solve the problems of high investment, single process, single process, etc., to save floor space and high yield , the effect of reducing operating costs

Inactive Publication Date: 2009-11-25
CHINA PETROCHEMICAL CORP +1
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Problems solved by technology

However, a single set of process is single, and the investment is relatively high.

Method used

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited.

[0035] Such as figure 2 Shown, the first sulfur recovery process of the present invention, acid gas 9, containing SO 2 Gas 1, air 11 and fuel steam 12 enter the combustion furnace 1 for combustion. After combustion, the gas enters the waste heat boiler 2 to obtain heat. After obtaining the heat, it enters the primary sulfur condenser 3 to obtain liquid sulfur 13. The uncondensed gas and air 11 enter into the Tail gas incinerator 4 is incinerated, and the gas after incineration is mixed with SO 2 The gas 2 enters the quench tower 5, and the extremely cold mixed gas enters the absorption tower 6 to contact with the absorbent from the regeneration tower 7 for SO 2 absorption, rich in SO 2 The absorbent enters the regeneration tower 7 to regenerate the absorbent, the lean gas after absorption enters the chimney to be emptied, a...

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Abstract

The present invention discloses a sulfur recycling technique which comprises the following steps: 1) supplying the acid gas, the high-concentration SO2 gas and equivalent of wind into a combustion furnace for combusting and generating a CLAUS reaction, recovering the heat and reducing the temperature through a waste heat boiler, cooling for obtaining the liquid sulfur, supplying the uncooled gas into a step 2); 2) supplying the gas from the step 1) into an end gas incinerator and adding equivalent of wind for obtaining the gas containing SO2 into a step 3); and 3) directly mixing the gas which comes from the step 2) and includes SO2 gas with the gas that comes from the outside of the device and includes SO2, after quench cooling and washing for eliminating the dust, absorbing and de-absorbing, and returning the obtained high-concentration SO2 gas to the step 1), wherein the gas after absorbing is discharged. The method of the invention has the advantages of short flow path, 15%-35% of investment reduction, and 20%-40% of operating cost reduction.

Description

technical field [0001] The invention belongs to the field of sulfur recovery and flue gas purification. The invention can be used to prepare sulfur from acid gas through CLAUS reaction, and can also be used for other 2 Or purification treatment of sulfurous gas. Background technique [0002] SO X It will pollute the environment in the form of acid rain. Ordinary crude oil contains a certain amount of sulfur. After crude oil is smelted, it needs to be desulfurized to obtain products with higher purity or to protect the environment. The existing desulfurization technologies in the petrochemical industry include sulfur recovery SUPERCLAUS process for treating various acid gases and flue gas desulfurization process for catalytic cracking flue gas. [0003] Sulfur recovery CLAUS process is an ancient process (see "Claus method sulfur recovery process technology", edited by Chen Gengliang, Xiao Xuelan, Yang Zhongxi, Gao Lixin, Petroleum Industry Press), from 1883 British chemist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/04F23G7/06
CPCY02P20/10Y02P20/129
Inventor 张耀昌朱雷鸣马强郭宏昶汤红年刘春燕胡敏
Owner CHINA PETROCHEMICAL CORP
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