Invention Grant
- Patent Title: Hydrocarbon recovery with pressure swing adsorption
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Application No.: US14803712Application Date: 2015-07-20
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Publication No.: US09227890B1Publication Date: 2016-01-05
- Inventor: Lei Ji , Ai-Fu Chang
- Applicant: Chevron Phillips Chemical Company LP
- Applicant Address: US TX The Woodlands
- Assignee: Chevron Phillips Chemical Company LP
- Current Assignee: Chevron Phillips Chemical Company LP
- Current Assignee Address: US TX The Woodlands
- Agency: Conley Rose, P.C.
- Agent Rodney B. Carroll; Monte R. Rhodes
- Main IPC: C07C7/13
- IPC: C07C7/13 ; C07C7/04 ; C07C9/06 ; C07C7/00 ; C08F10/02 ; C08F2/12

Abstract:
A process for component separation in a polymer production system comprising: (a) separating a polymerization product into a gas stream and a polymer stream; (b) processing the gas stream in distillation columns to yield a light hydrocarbon stream (LHS) comprising ethylene and ethane; (c) contacting LHS with a purged hydrocarbon adsorber to yield a loaded hydrocarbon adsorber and a non-adsorbed gas stream, wherein ethane is adsorbed by the purged hydrocarbon adsorber at a first pressure to yield adsorbed ethane, and wherein the non-adsorbed gas stream comprises recovered ethylene; (d) contacting the loaded hydrocarbon adsorber with a sweeping gas stream at a second pressure to yield an unloaded hydrocarbon adsorber and a recovered adsorbed gas stream comprising the sweeping gas stream and desorbed ethane; and (e) contacting the unloaded hydrocarbon adsorber with the sweeping gas stream at the first pressure to yield the purged hydrocarbon adsorber and a spent sweeping gas.
Information query