Patent · US Active

Process for separation of propylene from a liquefied petroleum gas stream

US10507405B1 · kind B1 · utility

0Cited by

2References

19Claims

0Family size

Inventors

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

Key dates

Filing date	Jun 29, 2018
Grant date	Dec 17, 2019
Priority date	—
Expiry date	Jul 26, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C9/10
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

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.

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