How to separate 1- Hexane from the mixture of the output obtained from the trimmer-ized zone of ethylene

Title:

How to separate 1- Hexane from the mixture of the output obtained from the trimmer-ized zone of ethylene

Document Type and Number:

Japanese Patent JP6122713

Kind Code:

B2

Abstract:

Separating 1-hexene from a mixture, which comprises e.g. ethylene and solvent, obtained from an ethylene trimerization reaction section, comprises (a) separating the mixture into a top fraction comprising ethylene and a bottom fraction, (b) separating a portion of an effluent deriving from the bottom fraction into a top fraction comprising 1-hexene and 1-butene and a bottom fraction, and (c) separating a portion of the fraction comprising 1-hexene and 1-butene into a top fraction principally comprising 1-butene and into a bottom fraction principally comprising 1-hexene. Separating 1-hexene from a mixture, which comprises ethylene, solvent, ethylene trimerization catalyst and formed products including 1-hexene, obtained from an ethylene trimerization reaction section, comprises (a) separating the mixture in a first distillation column into a top fraction comprising ethylene and a bottom fraction, (b) separating, in a second distillation column, a portion of an effluent deriving from the bottom fraction into a top fraction comprising 1-hexene and 1-butene and a bottom fraction, and (c) separating, in a final distillation column, a portion of the fraction comprising 1-hexene and 1-butene into a top fraction principally comprising 1-butene and into a bottom fraction principally comprising 1-hexene. The portion of effluent deriving from the bottom fraction obtained from step (b) is returned to the reaction section and the portion of bottom fraction obtained from step (b) is used in a recirculation loop connecting the reaction section and the column of the step (b). The recirculation loop is used to cool the reaction section and to reboil the column of step (b).

Inventors:

Daniel-Jean Vinell
Jean-Alain Chodolge
Jerome piglier
Pierre-Eve Martin
Laurent Bourne

Application Number:

JP2013138513A

Publication Date:

April 26, 2017

Filing Date:

July 02, 2013

Export Citation:

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Assignee:

Axens

International Classes:

C07C7/04; C07C11/107

Domestic Patent References:

JP7149672A
JP2008179631A
JP2008178873A
JP2004502527A
JP2002256007A
JP2005314268A

Attorney, Agent or Firm:

Matsumura Naoto
Akira Watanabe
Einosuke Kishimoto

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