Optimized combined desulfurization technology for PSA analysis gas and coal tar hydrogenation device acid gas

A hydrogenation device and acid gas technology, applied in the field of coal chemical industry, can solve the problems of large investment and achieve the effect of high controllability of desulfurization effect

Inactive Publication Date: 2018-05-29
新疆宣力环保能源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional deH 2 The S method has a large investment, and the processing contains H 2 S gas has certain options and limitations

Method used

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  • Optimized combined desulfurization technology for PSA analysis gas and coal tar hydrogenation device acid gas
  • Optimized combined desulfurization technology for PSA analysis gas and coal tar hydrogenation device acid gas
  • Optimized combined desulfurization technology for PSA analysis gas and coal tar hydrogenation device acid gas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as figure 1 As shown, this embodiment provides a PSA analysis gas and coal tar hydrogenation unit acid gas optimization joint desulfurization technology, including the following steps:

[0042] (1) High sulfuric acid gas (H 2 S concentration as high as 97%) is passed into the first desulfurization reactor, sodium carbonate (analytical pure) is used as the desulfurization liquid, phthalocyanine cobalt sulfonate DKT-6 is used as the catalyst, and the gas with high sulfuric acid content is desulfurized at 40°C. The first desulfurization treatment 8s; absorb H 2 The desulfurized liquid after S is passed into the oxidation regenerator for desorption reaction to produce elemental sulfur, and at the same time the desulfurized liquid resumes absorbing H 2 The ability of S, the generated elemental sulfur is melted by heating, discharged and solidified by cooling, so as to realize the recovery of sulfur;

[0043] (2) the tail gas discharged from the outlet of the first de...

Embodiment 2

[0047] This embodiment provides a PSA analysis gas and coal tar hydrogenation unit acid gas optimization joint desulfurization technology, including the following steps:

[0048] (1) High sulfuric acid gas (H 2 S concentration as high as 96%) is passed into the first desulfurization reactor, with sodium carbonate as the desulfurization liquid and cobalt phthalocyanine sulfonate as the catalyst, the first desulfurization treatment is performed on the high sulfuric acid gas at 45°C for 2s; absorb H 2 The desulfurized liquid after S is passed into the oxidation regenerator for desorption reaction to produce elemental sulfur, and at the same time the desulfurized liquid resumes absorbing H 2 The ability of S, the generated elemental sulfur is melted by heating, discharged and solidified by cooling, so as to realize the recovery of sulfur;

[0049] (2) the tail gas discharged from the outlet of the first desulfurization reactor is subjected to gas-liquid separation for the first ...

Embodiment 3

[0053] This embodiment provides a PSA analysis gas and coal tar hydrogenation unit acid gas optimization joint desulfurization technology, including the following steps:

[0054] (1) High sulfuric acid gas (H 2 The S concentration is as high as 98%) into the first desulfurization reactor, using sodium carbonate as the desulfurization solution, and using cobalt phthalocyanine sulfonate as the catalyst, to carry out the first desulfurization treatment on the high sulfuric acid gas at 42°C for 5s; absorb H 2 The desulfurized liquid after S is passed into the oxidation regenerator for desorption reaction to produce elemental sulfur, and at the same time the desulfurized liquid resumes absorbing H 2 The ability of S, the generated elemental sulfur is melted by heating, discharged and solidified by cooling, so as to realize the recovery of sulfur;

[0055] (2) the tail gas discharged from the outlet of the first desulfurization reactor is subjected to gas-liquid separation for the...

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Abstract

The invention relates to a low-pressure sulfur tolerant shift and special adsorbent inert gas exhaust technologies for production of hydrogen from raw coke oven gas. Firstly, raw coke oven gas is sequentially subjected to tar removal, desulfurization, dehydration and hydrodeoxygenation and detoxification treatment, two-stage CO sulfur tolerant shift is performed, CO in the raw coke oven gas is shifted into hydrogen, shifted gas containing hydrogen and other impurity gases is obtained, then, first-stage PSA separation is performed on the shifted gas to remove hydrocarbon, CO, CO2, CH4 and H2S in the shifted gas, second-stage PSA separation is performed to remove nitrogen and directly exhaust inert gas, and finally, hydrogen with the purity up to 99.9% is obtained. Besides, compressed heat of the raw coke oven gas is fully utilized, the temperature increases automatically after the raw coke oven gas is compressed, and hydrogenation is realized after cooling. The dehydrated raw coke ovengas is subjected to heat exchange temperature increase by use of heat released during two-stage CO sulfur tolerant shift, deoxygenation and detoxification treatment is performed, so that an additionalheating device is not required and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of coal chemical industry, and in particular relates to an optimized combined desulfurization technology of PSA analysis gas and acid gas of a coal tar hydrogenation unit. Background technique [0002] Coal tar and raw coal gas are both by-products of semi-coke production. They all contain sulfides to varying degrees. After hydrogen production and hydrogenation, they produce H 2 S exhaust. h 2 S is a harmful impurity in industrial gases. Its existence not only seriously threatens the safety of ginseng, but also causes corrosion of equipment and pipelines and catalyst poisoning. Therefore, different methods are required for desulfurization treatment in oil refining and chemical systems in order to meet the national environmental protection requirements. Traditional deH 2 The S method has a large investment, and the processing contains H 2 S gas has certain options and limitations. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/52B01D53/78
CPCB01D53/8628B01D53/78B01D2255/20707
Inventor 房广信吴均布商德民
Owner 新疆宣力环保能源股份有限公司
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