Title:
溶媒回収システムにおいて、析出物の生成を削減する方法
Document Type and Number:
Japanese Patent JP4979872
Kind Code:
B2
Abstract:
A method of removing at least one inert reaction diluent and/or wash solvent from a waste stream from a catalyst precursor production unit is disclosed, where the waste stream includes at least one reaction diluent or wash solvent, at least one titanium alkoxide, at least one magnesium alkoxide, and at least one alkanol. At least one inert reaction diluent and/or wash solvent is removed by contacting the waste stream with a solubilization solvent, and then subjecting the resulting stream to distillation. The solubilization solvent: (i) is present in an amount sufficient to maintain solubility of residual titanium and magnesium alkoxide species; (ii) has a boiling point higher than that of the one or more reaction diluent and/or wash solvent; and optionally but preferably (iii) does not form an azeotrope with the one or more reaction diluent and/or wash solvent. The method prevents precipitation of solid titanium and magnesium containing species during distillation, and provides efficient and effective recovery of the reaction diluent(s) and wash solvent(s).
Inventors:
Zum Mullen, Michael, Philip
Application Number:
JP2002509390A
Publication Date:
July 18, 2012
Filing Date:
June 14, 2001
Export Citation:
Assignee:
Union Carbide Chemicals and Plastics Technology LLC
International Classes:
C07C7/04; C08F4/64; B01D3/00; B01J31/02; B01J31/12; B01J31/40; C07C9/10; C07C9/15; C07C15/06; C07C15/08; C07C17/383; C07C19/03; C07C25/02; C07C25/06; C08F10/00
Domestic Patent References:
| JP62265306A | ||||
| JP51146386A | ||||
| JP2001261339A | ||||
| JP2030622A | ||||
| JP54018467A | ||||
| JP11501317A |
Foreign References:
| US5242549 |
Attorney, Agent or Firm:
Hiroshi Kobayashi
Eiji Katayama
Junko Kobayashi
Eiji Katayama
Junko Kobayashi