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Coke oven gas complex iron cooling pretreatment system and method before desulfurization

A technology for coke oven gas and pretreatment, which is applied in the fields of gas processing condensate, gas dust removal, combustible gas purification, etc., can solve the problems affecting sulfur flotation separation, desulfurization liquid foaming, and sulfur foam formation, etc., and achieves simple equipment, The effect of simple process and low operating cost

Pending Publication Date: 2022-03-29
LINHUAN COKING
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Problems solved by technology

After using the complex iron desulfurization catalyst, the discharge of desulfurization waste liquid is eliminated, but impurities such as tar dust and naphthalene are easy to accumulate in the system, which eventually leads to weak sulfur foam and even foaming of the desulfurization liquid, which seriously affects the flotation separation of sulfur

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  • Coke oven gas complex iron cooling pretreatment system and method before desulfurization
  • Coke oven gas complex iron cooling pretreatment system and method before desulfurization

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Embodiment Construction

[0020] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention relates to a cooling pretreatment system and method before desulfurization of coke oven gas complex iron, the system comprises a cooling tower, a ceramic membrane oil removal system, a circulating tank, a circulating pump and a heat exchanger, the cooling tower is a partially hollow tower filled with a layer of filler and a plurality of liquid distributors; according to the system and the method, the coke oven gas subjected to electric coke catching can be cooled, impurities such as tar dust and naphthalene in the coke oven gas subjected to electric coke catching can be deeply removed, and the problem of water balance in a coke oven gas desulfurization system is solved; and the problem that sulfur foams become virtual and even foam due to the fact that impurities such as tar dust and naphthalene are accumulated in the system in coke oven gas complex iron desulfurization is solved, the requirement of complex iron desulfurization for deep purification of the impurities in the coke oven gas is met, and the purpose that the desulfurization system normally floats and separates the sulfur foams and operates continuously and stably is achieved.

Description

technical field [0001] The invention relates to the technical field of coke oven gas purification, in particular to a coke oven gas cooling pretreatment system and method before complex iron desulfurization. Background technique [0002] Coke oven gas is a by-product of coal coking, and 20-30% of the sulfur in raw coal migrates to raw coal gas. The gaseous sulfides in coke oven gas are basically H2S, and a small part are COS and CS2. H2S in coke oven gas corrodes chemical product recovery equipment and gas transmission pipelines; coke oven gas with high H2S content is used in steelmaking, which will lead to a decline in steel quality; used in synthetic ammonia production, it will lead to catalyst poisoning failure and pipeline equipment corrosion ; For industrial and civil fuels, the sulfur dioxide in the flue gas will pollute the environment. Therefore, whether coke oven gas is used as industrial raw material or city gas, it needs to be desulfurized and purified. [0003]...

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Application Information

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IPC IPC(8): C10K1/00C10K1/02C10K1/04C10K1/06C10K1/10
CPCC10K1/10C10K1/02C10K1/046C10K1/001C10K1/002
Inventor 李治国刘凯李辉李华杨朱政杰李昕李达
Owner LINHUAN COKING
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