Title:
高温での少なくとも1つの結晶化段階と吸着帯域の上流に位置する少なくとも1つの白土処理工程とを備えるパラキシレンの分離方法
Document Type and Number:
Japanese Patent JP3774851
Kind Code:
B2
Abstract:
PCT No. PCT/FR95/01738 Sec. 371 Date Jun. 30, 1997 Sec. 102(e) Date Jun. 30, 1997 PCT Filed Dec. 27, 1995 PCT Pub. No. WO96/20907 PCT Pub. Date Jul. 11, 1996A process for separating paraxylene at very high purity from a charge of xylene isomers, comprising a selective adsorption of a fraction that is rich in paraxylene, at least one high-temperature crystallization of this fraction, and an isomerization of the fraction depleted of paraxylene, recycling the mother liquor to the selective adsorption optionally via a clay treatment followed optionally by a distillation of the treatment effluent, and optionally introducing the mother liquor into a distillation unit, wherein the crystallization can comprise several high-temperature stages.
Inventors:
Ochier Gerard
Mikitenko Pole
McPherson Stuart Earl
Mikitenko Pole
McPherson Stuart Earl
Application Number:
JP52076696A
Publication Date:
May 17, 2006
Filing Date:
December 27, 1995
Export Citation:
Assignee:
INSTITUT FRANCAIS DU PETROL
International Classes:
B01D15/00; C07C15/08; B01D9/02; C07C7/00; C07C7/04; C07C7/12; C07C7/14
Domestic Patent References:
| JP5201886A | ||||
| JP52031038A | ||||
| JP53023935A | ||||
| JP2002220352A | ||||
| JP10511672A | ||||
| JP54125619A | ||||
| JP55139327A | ||||
| JP63310837A |
Attorney, Agent or Firm:
Einosuke Kishimoto
Moriichi Kishimoto
Akira Watanabe
Norihiko Hibi
Moriichi Kishimoto
Akira Watanabe
Norihiko Hibi