Ammonia-soda coupled oven gas desulfurization process

A desulfurization process and coke oven gas technology, which is applied in the petroleum industry, combustible gas purification, sulfur preparation/purification, etc., can solve the problems of backward process, poor desulfurization effect, and inability to meet environmental protection, and achieve good desulfurization effect and operating costs. The effect of low and good promotion and use value

Active Publication Date: 2010-03-17
孙启玉 +1
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Problems solved by technology

[0002] The desulfurization of coke oven gas in the prior art mostly adopts ammonia method or subtraction, such as patent literature, 891077723, a desulfurization method of coke oven gas; 981117740, a method for desulfurization and decyanation of coke oven gas; Refined desulfurization process; 2004

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  • Ammonia-soda coupled oven gas desulfurization process

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Embodiment Construction

[0010] The desulfurization process of the present invention will be described in detail below with reference to the accompanying drawings.

[0011] The ammonia-soda combined coke oven gas desulfurization process of the present invention is to send the coke oven gas from the coking process into the precooling tower 2 and indirectly cool the refrigerated liquid from the refrigerator 1 in the precooling tower 2, and pass through the precooling tower 2 The pre-cooled coke oven gas is blown into the turbulent ball tower 3 with ammonia water as the absorbent for reaction and absorption. The ammonia water is sprayed from the top of the turbulent ball tower 3, discharged from the bottom of the turbulent ball tower 3, and sent to the rich liquid tank 6. The oxidation regeneration pump 7 is sent to the jet injector 8 on the top of the ammonia oxidation regeneration tank 9, and the jet is sprayed into the oxidation regeneration tank 9 after adding oxygen to generate sulfur foam, and the s...

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Abstract

The invention discloses an ammonia-soda coupled oven gas desulfurization process. In the process, ammonia-soda method two-stage tandem desulfurization and two sets of ammonia liquid and soda liquid regeneration process are adopted, a tubulent contact tower is used as absorption equipment in an ammonia method desulfurization process, oven gas and ammonia are subjected to absorbing reaction in the tubulent contact tower to generate sulfur foam which is fed into a working solution regeneration system; the working solution regeneration system consists of a pregnant solution tank, an oxidizing generation tank, a sulfur foam tank, a sulfur fused kettle, a vacuum drying agent and a barren solution tank; the sulfur foam passes through the pregnant solution tank, the oxidizing generation tank, thesulfur foam tank, the sulfur fused kettle and a vacuum drier to form a sulfur by-product; the oven gas exhausted from the tubulent contact tower is subject to a soda method desulfurization process through a tow-stage tandem structured packing tower; the desulfurized coal gas is fed to a thermoelectric plant for fuel; and the desulfurized coal gas is subjected to contact reaction with the oven gasin the first-stage and second-stage structure packing towers to generate soda-enriched working solution which is fed to the working solution regeneration system same with the ammonia method desulfurization to produce by-product sulfur.

Description

technical field [0001] The invention relates to a coke oven gas desulfurization process, in particular to an ammonia-alkali combined coke oven gas desulfurization process. Background technique [0002] The desulfurization of coke oven gas in the prior art mostly adopts the ammonia method or subtraction method, such as patent literature, 891077723, a desulfurization method for coke oven gas; 981117740, a method for desulfurization and decyanation of coke oven gas; Refined desulfurization process; 2004100212209, a coke oven gas desulfurization process; 2006100422329, a coke oven gas desulfurization process, etc. The shortcomings of the existing technology in use are that the process is backward, the desulfurization effect is poor, and it cannot meet the current requirements. Environmental needs. Contents of the invention [0003] The purpose of the present invention is to provide an ammonia-soda coke oven gas desulfurization process with good desulfurization effect and meet...

Claims

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Application Information

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IPC IPC(8): C10K1/12C01B17/05
Inventor 孙正吕迎智王思国郭新民
Owner 孙启玉
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