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CRYOGENIC SYSTEMS FOR REMOVING ACID GASES FROM A HYDROCARBON GAS STREAM USING CO-CURRENT SEPARATION DEVICES
CRYOGENIC SYSTEMS FOR REMOVING ACID GASES FROM A HYDROCARBON GAS STREAM USING CO-CURRENT SEPARATION DEVICES
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机译:使用共流分离装置从油气流中去除酸气的深冷系统
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摘要
A system for removing acid gases from a raw gas stream is provided. The system includes a cryogenic distillation column. The cryogenic distillation column receives a dehydrated and chilled sour gas stream, and separates the sour gas stream into an overhead gas stream comprised primarily of methane, and a bottom acid gas stream comprised primarily of carbon dioxide. The system also includes a series of co-current contactors. The co-current contactors may be placed in series to receive the bottom acid gas stream and recapture any entrained methane gas. Alternatively or in addition, the co-current contactors may be placed in series to receive the overhead gas stream, and sweeten it using a reflux liquid such as methane. In this instance, the sweetened gas is optionally liquefied and delivered for commercial sale, or is used as fuel gas on-site.
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