公开(公告)号：US20220402837A1

公开(公告)日：2022-12-22

申请号：US17777256

申请日：2021-07-12

Applicant: LG CHEM, LTD.

Inventor： In Seop KIM ,  Sang Beom LEE ,  Doo Wook KIM ,  Man Woo SON

IPC: C07C5/05 ,  C07C7/08 ,  C07C6/04 ,  B01D3/14

Abstract: Provided is a method for preparing 1-butene and propylene including: supplying a C4 mixture stream to a first hydrogenation reactor to convert 1,3-butadiene into 1-butene; supplying a discharge stream from the first hydrogenation reactor to a first distillation column, supplying a lower discharge stream from the first distillation column including 2-butene and n-butane to a metathesis reactor, and supplying an upper discharge stream from the first distillation column including 1-butene and i-butane to a second distillation column; recovering an upper discharge stream the second distillation column including i-butane and recovering 1-butene from a lower discharge stream from the second distillation column; and producing propylene in the metathesis reactor, supplying a discharge stream from the metathesis reactor to a purification unit to recover propylene, and recycling an unreacted material to the metathesis reactor.

公开(公告)号：US20200263095A1

公开(公告)日：2020-08-20

申请号：US16645647

申请日：2019-07-02

Applicant: LG CHEM, LTD.

Inventor： In Seop KIM ,  Seok Goo LEE ,  Sung Kyu LEE ,  Tae Woo KIM ,  Joon Ho SHIN

IPC: C10G9/00 ,  C10G70/06

Abstract: A method for quenching a pyrolysis product, including: supplying a discharge stream from a liquid decomposition furnace to a first quench tower; supplying an upper discharge stream from the first quench tower to a second quench tower; supplying a discharge stream from a first gas decomposition furnace to the second quench tower; and supplying a discharge stream from a second gas decomposition furnace to the second quench tower.

公开(公告)号：US20200216373A1

公开(公告)日：2020-07-09

申请号：US16647828

申请日：2019-07-04

Applicant: LG CHEM, LTD.

Inventor： Tae Woo KIM ,  Sung Kyu LEE ,  In Seop KIM ,  Joon Ho SHIN ,  Yeon Uk CHOO

IPC: C07C7/04 ,  B01D3/14 ,  B01D5/00 ,  C07C7/09

Abstract: A method for preparing ethylene including: feeding a thermally cracked compressed stream to a first distillation apparatus selectively operating as a first deethanizer or a depropanizer; and feeding an overhead discharge stream of the first distillation apparatus to a second distillation apparatus. When the first distillation apparatus is operated as the first deethanizer, a bottom discharge stream of the second distillation apparatus is fed to a C2 separator. When the first distillation apparatus is operated as the depropanizer, the bottom discharge stream of the second distillation apparatus is passed through a third distillation apparatus and fed to the C2 separator.