China Petroleum Chemical Corporation

Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation

Chunfang Li

Dongfeng Li

Zhixin Liu

Yan Li

Jun Tian

Liang Guo

Mingsen Zhang

Lihua Liao

Yi Zou

Shujuan Luo

Huawei Shao

Jingsheng Zhang

Zhiyan Hu

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.

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

A method and system for separating light hydrocarbons are disclosed, wherein the method comprises compression, cooling, absorption, desorption, rectification, cracking, and recycling cracked gas to the compression step.

Method and system for separating light hydrocarbons

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Beijing, China

Chunfang Li