发明申请
- 专利标题: PROCESS FOR SEPARATION OF PROPYLENE FROM A LIQUEFIED PETROLEUM GAS STREAM
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申请号: US16024236申请日: 2018-06-29
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公开(公告)号: US20200001198A1公开(公告)日: 2020-01-02
- 发明人: Stanley J. Frey , Chunqing Liu , Trung Pham
- 申请人: UOP LLC
- 主分类号: B01D3/14
- IPC分类号: B01D3/14 ; B01D61/36 ; C07C7/04 ; C07C7/144 ; C07C9/08 ; C07C11/06 ; C07C11/08
摘要:
Process for separating a highly pure propylene product from a liquefied petroleum gas stream is disclosed, which eliminates a C3 splitter having over 120 trays and the additional equipment that a C3 splitter requires. The process includes passing a feed stream to a dividing wall column to produce an overhead stream, a first side draw stream, a second side draw stream, and a product stream. The first side draw stream is passed to a treatment unit to produce a treated stream. The treated stream is passed to a membrane unit and a permeate stream is passed from the membrane unit to produce a polymer grade propylene stream.
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