Patent · US Active

Membrane process for olefin separation

US10507435B1 · kind B1 · utility

2Cited by

4References

16Claims

0Family size

Inventors

Stanley J. Frey · Palatine, US
J. Mark Houdek · Bartlett, US
Chunqing Liu · Schaumburg, US
Trung Pham · Mount Prospect, US

Key dates

Filing date	Jun 28, 2018
Grant date	Dec 17, 2019
Priority date	—
Expiry date	Jun 28, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC10G2400/20
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process is provided to separate a hydrocarbon stream comprising a mixture of light olefins and light paraffins, the process comprising sending the hydrocarbon stream through a pretreatment unit to remove impurities selected from the group consisting of sulfur compounds, arsine, phosphine, methyl acetylene, propadiene, and acetylene to produce a treated hydrocarbon stream; vaporizing the treated hydrocarbon stream to produce a gaseous treated hydrocarbon stream; adding liquid or vapor water to the gaseous treated hydrocarbon stream; then contacting the gaseous treated hydrocarbon stream to a membrane in a membrane system comprising one or more membrane units to produce a permeate stream comprising about 96 to 99.9 wt % light olefins and a retentate stream comprising light paraffins.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.