Method and apparatus for recovering C2—C4 components in methane-containing industrial gas

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United States of America Patent

PATENT NO 12110460
APP PUB NO 20220389337A1
SERIAL NO

17755418

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Abstract

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A method for recovering C2 components in a methane-containing industrial gas includes the steps of (1) cooling a compressed methane-containing industrial gas and performing gas-liquid separation; (2) absorbing C2 components in the gas phase by using an absorbent to obtain an absorption rich liquid; (3) returning the absorption rich liquid to the compression in step (1) or mixing the absorption rich liquid with the liquid phase obtained in step (1) to obtain a mixed liquid, and depressurizing the mixed liquid or the absorption rich liquid; (4) performing methane desorption on the depressurized stream to obtain a rich absorbent, or performing second gas-liquid separation on the depressurized stream, followed by methane desorption on the second liquid phase to obtain a rich absorbent; and (5) desorbing and separating the rich absorbent to obtain a lean absorbent and an enriched gas, and recycling and reusing the lean absorbent.

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Patent Owner(s)

Patent OwnerAddress
BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY CHINA PETROLEUM & CHEMICAL CORPORATIONNO 14 BEISANHUAN EAST ROAD CHAOYANG DISTRICT BEIJING 100013
CHINA PETROLEUM & CHEMICAL CORPORATIONBEIJING 100728

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guo, Liang Beijing, CN 173 1804
Hu, Zhiyan Beijing, CN 3 12
Li, Chunfang Beijing, CN 5 16
Li, Dongfeng Beijing, CN 21 185
Liu, Zhixin Beijing, CN 42 103
Shao, Huawei Beijing, CN 1 1
Zhang, Jingsheng Beijing, CN 1 1
Zou, Yi Beijing, CN 85 486

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