Title:
REMOVAL OF RE-FORMED DISULFIDE IN MERCAPTAN EXTRACTION METHOD
Document Type and Number:
Japanese Patent JPS63213593
Kind Code:
A
Abstract:
Reentry disulphides are eliminated in a continuous process for treating a sour hydrocarbon stream by extracting the mercaptans contained in the hydrocarbon stream 1 with a disulphide-free alkaline solution in an extraction zone 3, oxidizing the mercaptans to disulphides in the presence of an oxidation catalyst, in oxidation zone 6, separating a major portion of the disulphides from the alkaline solution at 9, reducing the residual disulphides in the alkaline solution to mercaptans and recycling the resulting substantially disulphide-free alkaline solution from the reduction zone 12 to the extraction zone 3. The reduction of the disulphides to mercaptans may be carried out by hydrogenation or by electrochemical reduction.
Inventors:
BRICKER JEFFERY C (US)
STAEHLE BRUCE E (US)
STAEHLE BRUCE E (US)
Application Number:
JP31844287A
Publication Date:
September 06, 1988
Filing Date:
December 16, 1987
Export Citation:
Assignee:
UOP INC
International Classes:
B01D53/48; B01D53/86; B01J23/44; B01J31/22; C10G11/00; C07B61/00; C07C67/00; C07C313/00; C07C319/06; C07C321/02; C10G19/02; C10G19/08; C10G53/02; (IPC1-7): B01J31/22; C07C148/06; C10G11/00; C10G19/02
Attorney, Agent or Firm:
Kyozo Yuasa (4 outside)