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System and method for treating waste acid gas

A waste gas treatment and acid gas technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., to achieve the effect of small footprint, low operating cost and simple operation

Active Publication Date: 2013-02-06
美景(北京)环保科技有限公司
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Problems solved by technology

At present, various Claus+ reduction absorption and its improved processes use new patented solvents to capture and recycle the tail gas from liquid sulfur degassing, and use pre-enrichment and enrichment for low-concentration acid-poor gas to impro

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  • System and method for treating waste acid gas

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Abstract

The invention provides a system and a method for treating waste acid gas. The system for treating the waste acid gas comprises a rich acid gas thermal reaction treating unit, a claus treating unit, a claus tail gas and poor acid gas burning unit, a burnt tail gas catalytic oxidation acid-making unit, a secondary conversion acid-making unit and a tail gas reheating unit. According to the system for treating the waste gas, the sulfur recovery rate of the whole system for treating the acid gas reaches above 99.99%, the concentration of SO2 in the tail gas emitted to atmosphere is less than 100mg/m<3>, the conversion rate and the emission concentration can meet the highest emission limit standards in the industry, and no waste liquid is discharged from the system.

Description

technical field [0001] The invention relates to an acid gas waste gas treatment system and treatment method. Background technique [0002] In petrochemical, coal chemical and other production processes, the sulfur in raw materials is finally converted into high-concentration acid gas containing tens of percent hydrogen sulfide in the process of processing. Hydrogen sulfide is a very harmful substance to safety and the environment. Must be treated or recycled before discharge. For large-scale sulfur recovery (greater than several thousand tons / year), in order to facilitate product sales, storage and transportation, the Claus sulfur recovery process is usually used to convert hydrogen sulfide into sulfur. [0003] The conventional Claus sulfur recovery process is composed of a thermal reaction section and several catalytic reaction sections. Contains H 2 The acid gas of S is incompletely burned with air in the combustion furnace, and the air volume is strictly controlled to...

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Application Information

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IPC IPC(8): C01B17/80C01B17/04
CPCY02P20/129
Inventor 胡惊雷
Owner 美景(北京)环保科技有限公司
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