Title:
硫黄含量低下のための膜分離
Document Type and Number:
Japanese Patent JP4218751
Kind Code:
B2
Abstract:
A membrane process for the removal of sulfur species from a naphtha feed, in particular, a FCC light cat naphtha, without a substantial loss of olefin yield is disclosed. The process involves contacting a naphtha feed stream with a membrane having sufficient flux and selectivity to separate a sulfur deficient retentate fraction from a sulfur enriched permeate fraction, preferably, under pervaporation conditions. Sulfur deficient retentate fractions are useful directly into the gasoline pool. Sulfur-enriched permeate fractions are rich in sulfur containing aromatic and nonaromatic hydrocarbons and are further treated with conventional sulfur removal technologies, e.g. hydrotreating, to reduce sulfur content. The process of the invention provides high quality naphtha products having a reduced sulfur content and a high content of olefin compounds.
Inventors:
White, lloyd stephen
Richard Franklin, Worms Becher
Rezeman, Marcus
Richard Franklin, Worms Becher
Rezeman, Marcus
Application Number:
JP2002568665A
Publication Date:
February 04, 2009
Filing Date:
February 13, 2002
Export Citation:
Assignee:
W R GRACE & CO-CONN
International Classes:
B01D61/24; C10G31/09; B01D61/36; B01D71/54; B01D71/64; B01D71/70; C10G31/00; C10G31/11; C10G53/02; C10G53/08; C10G67/02
Domestic Patent References:
| JP2004517174A | ||||
| JP2004532905A | ||||
| JP10314551A | ||||
| JP5156264A |
Foreign References:
| US5643442 |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shinya Hosokawa
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Shinya Hosokawa