Process for Recovering Olefins from Manufacturing Operations,申请号US201514789166-传众专利搜索

Process for Recovering Olefins from Manufacturing Operations

申请公布号：US2016075620(A1)

申请号：US201514789166

申请日期：2015.07.01

申请公布日期：2016.03.17

申请人：

Su Paul

发明人：Su Paul

分类号：C07C7/144;C07C7/09;C07C7/00

主分类号：C07C7/144

地址：Saratoga CA US

摘要：A process for treating an effluent gas stream arising from a manufacturing operation that produces an olefin or a non-polymeric olefin derivative. The process involves cooling and condensing the effluent gas stream, which comprises an olefin, a paraffin, and a third gas, to produce a liquid condensate and an uncondensed (residual) gas stream. Both streams are then passed through membrane separation steps. The membrane separation of the uncondensed gas stream results in an olefin-enriched stream and an olefin-depleted stream. The olefin-enriched stream is recirculated within the process prior to the condensation step. The membrane separation of the condensate also results in an olefin-enriched stream, which may be recycled for use within the manufacturing operation, and an olefin-depleted stream, which may be purged from the process.

主权项：1. A process for treating an effluent gas stream arising from an operation that manufactures an olefin, said effluent gas stream comprising an olefin, a paraffin and a third gas, the process comprising the steps of: (a) passing the effluent gas stream to a compressor to produce a compressed stream; (b) partially condensing the compressed stream, including cooling and separating the compressed stream into a condensed liquid condensate enriched in olefin and paraffin and an uncondensed gas stream depleted in olefin and paraffin; (c) separating the condensed liquid condensate from step (b) using a first membrane to produce a first olefin-enriched permeate stream and a first olefin-depleted residue stream; (d) separating the uncondensed gas stream from step (b) using a second membrane to produce a second olefin-enriched permeate stream and a second olefin-depleted residue stream; and (e) returning the second olefin-enriched permeate stream upstream of the compressor.