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Title:
PROCESS FOR THE DESULFURIZATION OF A LIGHT FCC NAPHTHA
Document Type and Number:
WIPO Patent Application WO2003025095
Kind Code:
A3
Abstract:
A process for the desulfurization of a light boiling range (C5-350 DEG F) fluid catalytically cracked naphtha, which may be first subjected to a thioetherification to react the diolefins with mercaptans contained in it to form sulfides, is fed to a high pressure (>250 psig) catalytic distillation hydrodesulfurization step along with hydrogen under conditions to react most of the organic sulfur compounds, including sulfides from the thioetherification to from H2S. The H2S and a light product stream (C5's and C6's) are removed as overheads. The bottoms from the catalytic distillation hydrodesulfurization step is fractionated and the bottoms from the fractionation contacted with hydrogen in a straight pass hydrogenation step in the presence of a hydrodesulfurization catalyst at pressure of >250 and temperature >400 DEG F to further reduce the sulfur content.

Inventors:
VICHAILAK MONTRI (US)
KLUSSMAN BERTRAND (US)
MARASCHINO MARIO J (US)
Application Number:
PCT/US2002/022464
Publication Date:
September 18, 2003
Filing Date:
July 11, 2002
Export Citation:
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Assignee:
CATALYTIC DISTILLATION TECH (US)
VICHAILAK MONTRI (US)
KLUSSMAN BERTRAND (US)
MARASCHINO MARIO J (US)
International Classes:
C10G65/04; C10G65/16; (IPC1-7): C10G65/04; C10G65/16
Domestic Patent References:
WO2001059032A12001-08-16
Foreign References:
US6231752B12001-05-15
US5597476A1997-01-28
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