Title:
ADSORPTION PROCESS FOR AMINE OR AMINE SALT RECOVERY FROM AQUEOUS BRINE SOLUTION
Document Type and Number:
Japanese Patent JP3860852
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To recover amines and amine salts by adsorption onto an adsorbent resin from a high ionic strength aqueous solution.
SOLUTION: (A) An aqueous solution having (i) high ionic strength corresponding to about 5-40 wt.% Nail concentration and containing (ii) nitrogen compounds (preferably amines, amine salts or mixture of amines and amine salts) is contacted with (B) a non-ion-exchangeable adsorbent polymeric resin copolymer to adsorb the component (ii) onto the component B and to remove the component (ii) from the component A. The adsorbed component (ii) is subsequently dissolved in a solvent and desorbed by washing the component B with the component (ii) adsorbed thereto with an effective amount of the solvent effective as a remover. The aqueous solution as the component A is preferably an aqueous brine solution of byproducts from interfacial polycondensation of a bisphenol and phosgene for producing the corresponding polycarbonate.
Inventors:
Larry Ivis Flowers
Eugene Pauling Borden
David Lee Ramsey
Peter David Phelps
Eugene Pauling Borden
David Lee Ramsey
Peter David Phelps
Application Number:
JP20937895A
Publication Date:
December 20, 2006
Filing Date:
August 17, 1995
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
B01J20/26; C07C209/86; B01D15/00; B01J20/34; C07B63/00; C07C209/84; C07C211/05; C07C211/63; C08G64/40; C07C211/08; C07C211/62; (IPC1-7): C07C211/63; B01J20/26; C07B63/00; C07C209/86; C07C211/05
Domestic Patent References:
| JP2202858A | ||||
| JP48054758A | ||||
| JP48073364A |
Attorney, Agent or Firm:
Kenichi Matsumoto