METHOD FOR PREPARING 1-BUTENE AND PROPYLENE

Title:

METHOD FOR PREPARING 1-BUTENE AND PROPYLENE

Document Type and Number:

WIPO Patent Application WO/2022/030784

Kind Code:

A1

Abstract:

The present invention relates to a method for preparing 1-butene and propylene, the method comprising the steps of: transforming 1,3-butadiene into 1-butene by supplying a C4 mixture stream to a first hydrogenation reactor; supplying the first hydrogenation reactor discharge stream to a first distillation column, supplying a lower discharge stream comprising 2-butene and n-butane to a metathesis reactor, and supplying an upper discharge stream comprising 1-butene and i-butane to a second distillation column; recovering an upper discharge stream comprising i-butane from the second distillation column, and recovering 1-butene from a lower discharge stream; and producing propylene in the metathesis reactor, recovering the propylene by supplying the metathesis reactor discharge stream to a refining unit, and circulating an unreactant to the metathesis reactor.

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Inventors:

KIM IN SEOP (KR)
LEE SANG BEOM (KR)
KIM DOO WOOK (KR)
SON MAN WOO (KR)

Application Number:

PCT/KR2021/008892

Publication Date:

February 10, 2022

Filing Date:

July 12, 2021

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

C07C7/04; C07C11/06; C07C11/16

Foreign References:

KR20100069156A	2010-06-24
US20040267067A1	2004-12-30
KR870001082A	1987-03-11
US20040192994A1	2004-09-30
KR19980033193A	1998-07-25
KR20210027788A	2021-03-11

Other References: