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Hydrogenation catalyst regeneration and waste gas treatment device and method

A waste gas treatment device, hydrogenation catalyst technology, applied in the field of chemical industry

Pending Publication Date: 2020-10-27
SINOPEC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the closed discharge of waste gas and waste liquid during the regeneration process effectively reduces VOC emissions, solves the problem of emission pollution during the regeneration process in the catalyst, and is more conducive to environmental protection.

Method used

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  • Hydrogenation catalyst regeneration and waste gas treatment device and method
  • Hydrogenation catalyst regeneration and waste gas treatment device and method
  • Hydrogenation catalyst regeneration and waste gas treatment device and method

Examples

Experimental program
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Effect test

Embodiment

[0040] The hydrogenation catalyst regeneration and exhaust gas treatment device includes: regeneration gas heater 4, hydrogenation reactor 2, first-stage exhaust gas treatment unit and second-stage exhaust gas treatment unit;

[0041] Wherein, the regeneration feed gas feed pipeline is connected to the regeneration gas heater 4 and the hydrogenation reactor 2 in sequence;

[0042] The outlet of hydrogenation reactor 2 is connected to the first-stage exhaust gas treatment unit and the second-stage exhaust gas treatment unit through the first-stage exhaust gas treatment branch pipeline and the second-stage exhaust gas treatment branch pipeline respectively;

[0043] The exhaust gas treatment unit of the first stage includes a torch system, and a first valve is arranged on the branch pipeline of the exhaust gas treatment of the first stage, which is used to control the switch of the exhaust gas treatment unit of the first stage;

[0044] The second-stage exhaust gas treatment uni...

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PUM

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Abstract

The invention belongs to the field of chemical engineering, and particularly discloses a hydrogenation catalyst regeneration and waste gas treatment device and method, the device discharges tail gas in different stages to different treatment systems according to the characteristics of different oxygen contents in different stages of catalyst regeneration tail gas, the safety of the system is enhanced, and the potential safety hazard caused by discharging oxygen-containing waste gas to a torch system is avoided. Meanwhile, due to closed emission of waste gas and waste liquid in the regenerationprocess, VOC emission is effectively reduced, the problem of emission pollution in the regeneration process in the catalyst device is solved, and environmental protection is better facilitated.

Description

technical field [0001] The invention belongs to the field of chemical industry, and more specifically relates to a hydrogenation catalyst regeneration and waste gas treatment device and method. Background technique [0002] Pyrolysis gasoline (also known as "pygas") is a liquid by-product of the steam cracking process to produce ethylene and propylene. Pyrolysis gasoline is a highly unsaturated hydrocarbon mixture (carbon range about C5-C14), rich in dienes, olefins and aromatics, especially benzene, while pyrolysis gasoline also includes heteroatom-containing hydrocarbons, such as sulfur and nitrogen-containing compounds. If left untreated, pyrolysis gasoline typically degrades in the fuel system to produce gums and varnishes. In order to improve the utilization value of pyrolysis gasoline, so that it can be used as gasoline blending raw materials, pyrolysis gasoline must be at least partially hydrogenated or hydrotreated to reduce the degree of unsaturation and the conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J38/02B01J38/06B01J38/14B01D53/00
CPCB01J38/02B01J38/06B01J38/14B01D53/00B01D2257/708Y02A50/20
Inventor 利梅王文平刘江峰聂毅强唐平吴冬燕
Owner SINOPEC ENG