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Title:
METHOD FOR SEPARATING OLEFINIC HYDROCARBON
Document Type and Number:
Japanese Patent JP2002060760
Kind Code:
A
Abstract:

To provide a method for removing aromatic hydrocarbons from a molecular sieve used in a guard bed for an absorption separation process which separates olefinic hydrocarbons from paraffinic hydrocarbons.

The guard bed 4 in a molecular sieve is regenerated by a process for recovering valuable hydrocarbons from the spaces of the guard bed. The process comprises a step in which the sieve is allowed to come into contact with purge stream at first, and the first effluent from the guard bed is sent to a raffinate tower 26 to recover the olefinic hydrocarbons trapped in the spaces of the guard bed. The flow of the effluent from the guard bed is subsequently supplied to another fractionating column 29.


Inventors:
STEPHAN W SOOFUN
SANTI KARUPURASHIPANYA
Application Number:
JP2000246219A
Publication Date:
February 26, 2002
Filing Date:
August 15, 2000
Export Citation:
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Assignee:
UOP LLC
International Classes:
B01D3/00; B01J20/34; C07B63/00; C07C5/327; C07C7/10; C07C7/13; C10G25/03; C10G53/08; (IPC1-7): C10G53/08; B01D3/00; B01J20/34; C07B63/00; C07C7/10; C07C7/13; C10G25/03
Attorney, Agent or Firm:
Morio Sada