Method for producing alpha-olefin

Patent metadata

Field	Value
Publication number	US-2024239727-A1
Application number	US-202218562433-A
Country	US
Kind code	A1
Filing date	May 2, 2022
Priority date	Jun 3, 2021
Publication date	Jul 18, 2024
Grant date	—

Abstract

A method for producing an α-olefin may include (1) continuously introducing an ethylene and a catalyst into a reactor, followed by performing a polymerization reaction to obtain a reaction mixture; and (2) continuously introducing the reaction mixture and a base into a line mixer, followed by performing mixing. The line mixer may have a stirring power in a range of from 30 to 1000 kW·sec/m3 and a number of passes may be in a range of from 5 to 50.

First claim

1 . A method for producing an α-olefin, the method comprising:
(1) continuously introducing an ethylene and a catalyst into a reactor, followed by performing a polymerization reaction to obtain a reaction mixture; and
(2) continuously introducing the reaction mixture and a base into a line mixer, followed by performing mixing,
wherein the line mixer has a stirring power in a range of from 30 to 1000 kW·sec/m 3 and a number of passes in a range of from 5 to 50.

2 . The method of claim 1 , further comprising:
bringing the reaction mixture into contact with the base before continuously introducing the reaction mixture and the base into the line mixer, wherein a distance between a junction at which the reaction mixture contacts the base and an inlet of the line mixer is 1 m or less.

3 . The method of claim 1 , wherein the catalyst is a Ziegler-based catalyst.

4 . The method of claim 1 , wherein the base is an ammonia.

5 . The method of claim 1 , further comprising, after the continuously introducing (2):
(3) deashing comprising removing the deactivated catalyst; (4) distilling for recovering the α-olefin.

Assignees

• Idemitsu Kosan Co

Inventors

• Kobayashi Ryoichi

Classifications

• C07C2531/38

  of titanium, zirconium or hafnium · CPC title

• C07C2531/14

  of aluminium or boron · CPC title

• C07C2527/125

  Compounds comprising a halogen and scandium, yttrium, aluminium, gallium, indium or thallium · CPC title

• C07C2/20

  Acids of halogen; Salts thereof {; Complexes thereof with organic compounds} · CPC title

• C07C2/30

  containing metal-to-carbon bond; Metal hydrides · CPC title