Title:
A regeneration method of the selectivity solvent for an extraction process
Document Type and Number:
Japanese Patent JP6101294
Kind Code:
B2
Abstract:
Recovering a polar hydrocarbon (HC) selective solvent substantially free of hydrocarbons (HCs) and other impurities from a lean solvent stream containing the selective solvent, measurable amounts of heavy aromatic HCs, and polymeric materials that are generated in an extractive distillation (ED) or liquid-liquid extraction (LLE) process. At least a portion of the lean solvent stream is contact in a solvent clean-up zone with a slip stream from the HC feed stream of the ED or LLE process or an external stream. The HC feed stream, such as pyrolysis gasoline or reformate, contains significant amounts of benzene and at least 50% polar (aromatic) HCs and serves as a displacement agent to remove the heavy HCs and polymeric material from the lean solvent stream. A magnetic filter can be used to remove the paramagnetic contaminants from the lean solvent.
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Inventors:
Fu-Mean Lee
Lin Zhong-bin
Quan-You Woo
One Ji-Ho
Chiu Jeffrey Toon-Min
Lee Jane-Chu Young
Woo You Mean
Yang Han-Chen
Lin Zhong-bin
Quan-You Woo
One Ji-Ho
Chiu Jeffrey Toon-Min
Lee Jane-Chu Young
Woo You Mean
Yang Han-Chen
Application Number:
JP2014558732A
Publication Date:
March 22, 2017
Filing Date:
December 14, 2012
Export Citation:
Assignee:
MT International Inc.
CPC Corporation Taiwan
CPC Corporation Taiwan
International Classes:
C10G21/28; C10G7/08; C10G21/16; C10G21/20; C10G21/22
Foreign References:
| WO2012021232A1 |
Attorney, Agent or Firm:
Kenji Sugimura
Keisuke Kawahara
Nobuyuki Ichieda
Keisuke Kawahara
Nobuyuki Ichieda
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