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Coke oven gas hydrogen sulfide gas recovery method and device

A coke oven gas and gas recovery technology, which is applied in the field of energy and environmental protection, can solve the problems of hydrogen sulfide recovery from coke oven gas with multi-stage cyclones, insignificant efficiency of sulfur recovery and desulfurization, and many incidental equipment. Small size, complete regeneration, and the effect of reducing the occupied area

Active Publication Date: 2021-12-10
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the efficiency of sulfur recovery and desulfurization using tower equipment is not significant, the method is complicated, the floor area is large, the investment is high, and there are many incidental equipment
As mentioned above, there is currently no research report on the use of multi-stage cyclones for hydrogen sulfide recovery from coke oven gas

Method used

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  • Coke oven gas hydrogen sulfide gas recovery method and device
  • Coke oven gas hydrogen sulfide gas recovery method and device
  • Coke oven gas hydrogen sulfide gas recovery method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Single stage swirl jet adsorber 100000 Nm 3 / h coke oven gas desulfurization.

[0056] The composition of high sulfur coke oven gas is as follows v%: CO: 7%, H 2 :56%, CO 2 :3%,N 2 :5%, CH 4 : 25%, CnHm: 2.5%, O 2 :0.5%, H 2 S:15g / Nm 3 .

[0057] Technical effect: The coke oven gas has a large flow rate and high sulfur content. The new method and device for recovering hydrogen sulfide gas from coke oven gas can reduce the concentration of hydrogen sulfide from the single-stage swirl jet adsorber to 1.5g / Nm 3 Below, the efficiency is more than 90%, and the by-product sulfur is 100kg / h, which greatly improves the hydrogen sulfide recovery effect and processing capacity.

Embodiment 2

[0059] Multistage Swirl Jet Adsorber 100000 Nm 3 / h coke oven gas desulfurization.

[0060] The composition of high sulfur coke oven gas is as follows v%: CO: 7%, H 2 :56%, CO 2 :3%,N 2 :5%, CH 4 : 25%, CnHm: 2.5%, O 2 :0.5%, H 2 S:15g / Nm 3 .

[0061] Technical effect: The coke oven gas has a large flow rate and high sulfur content. The new coke oven gas hydrogen sulfide gas recovery method and device are used in multi-stage series to reduce the concentration of hydrogen sulfide from the first-stage swirl jet adsorber to 100mg / Nm 3 Below, the concentration of hydrogen sulfide from the second stage swirl jet adsorber is reduced to 30mg / Nm 3 Below, the overall efficiency is 99.8%, and the by-product sulfur is 1500kg / h, which greatly improves the hydrogen sulfide recovery effect and processing capacity. The use of renewable metal ion catalysts greatly improves the recovery rate of sulfur element. Compared with other methods and devices, the method and device of the pre...

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Abstract

The invention discloses a coke oven gas hydrogen sulfide gas recovery method and device, and provides a coke oven gas hydrogen sulfide gas recovery method. The process of the method is as follows: coke oven gas after oil removal by a degreasing tank and strong alkali after heating The active adsorption liquid enters the one-stage or multi-stage swirl jet adsorber at the same time; the adsorption liquid that has absorbed hydrogen sulfide in the one-stage or multi-stage swirl jet adsorber is sent to the circulating liquid tank, and is circulated with the solution after being heated by the circulating liquid tank coil Pumped to the desorption and regeneration integrated device; in the desorption and regeneration integrated device, metal ion catalyst is used to oxidize and desorb elemental sulfur, and it is separated and recovered; polyphenols and oxygen in the air generate quinones, which will be desorbed The reduced metal ion catalyst in the integrated device of attachment and regeneration is oxidized and revived to restore its ability to oxidize and desulfurize, and complete the cycle of adsorption-desulfurization-regeneration. The invention also provides a related device for recovering coke oven gas hydrogen sulfide gas.

Description

technical field [0001] The invention belongs to the field of energy and environmental protection, and relates to a method for recovering hydrogen sulfide gas from coke oven gas, which is suitable for the recovery process of hydrogen sulfide gas from coke oven gas. Specifically, the invention provides a recovery method and device for coke oven gas hydrogen sulfide gas. Background technique [0002] h 2 S is a colorless irritating gas with a strong smell of rotten eggs, a polar molecule with a relative molecular mass of 34.08, an olfactory threshold of about 0.00041ppm, a relative density of 1.19 (air density is 1), and a melting point of -85.5°C , with a boiling point of -60.4°C, easily soluble in water and ethanol. [0003] After recovery and purification, coke oven gas can not only be used as civil and industrial gas, but also can be used to generate electricity and produce chemical products such as methanol, synthetic ammonia, dimethyl ether, urea, and sponge iron. H in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10K1/10C10K1/12C01B17/04
CPCC10K1/004C10K1/102C10K1/12C10K1/122C01B17/04Y02P20/584
Inventor 王依谋马良张革松刘安林李兵贾虹何梦雅
Owner EAST CHINA UNIV OF SCI & TECH