EP 1954785 A4 20110622 - SELECTIVE NAPHTHA HYDRODESULFURIZATION WITH HIGH TEMPERATURE MERCAPTAN DECOMPOSITION
Title (en)
SELECTIVE NAPHTHA HYDRODESULFURIZATION WITH HIGH TEMPERATURE MERCAPTAN DECOMPOSITION
Title (de)
SELEKTIVE NAPHTHA-HYDRODESULFURIERUNG MIT MERCAPTANZERSETZUNG BEI HOHER TEMPERATUR
Title (fr)
HYDRODESULFURATION SELECTIVE DU NAPHTA AVEC DECOMPOSITION DES MERCAPTANS A HAUTE TEMPERATURE
Publication
Application
Priority
- US 2006044231 W 20061114
- US 28658005 A 20051123
Abstract (en)
[origin: US2007114156A1] A process for the selective hydrodesulfurization of olefinic naphtha streams containing a substantial amount of organically bound sulfur and olefins. The olefinic naphtha stream is selectively desulfurized in a first hydrodesulfurization reaction stage. This effluent stream is then contacted with a stripping agent in a H<SUB>2</SUB>S removal zone, such as steam or an amine solution, to remove H<SUB>2</SUB>S from the effluent stream, thereby reducing the H<SUB>2</SUB>S partial pressure of the process stream. The process stream is then subjected to a second desulfurization reaction stage followed by a mercaptan decomposition stage to reduce the content of mercaptan sulfur in the final product stream. In a second embodiment, the effluent stream from the first hydrodesulfurization reaction stage, after being subjected to the H<SUB>2</SUB>S removal zone, is fed directly to the mercaptan decomposition stage where total sulfur content and mercaptan sulfur content are reduced in the final product stream.
IPC 8 full level
C10G 45/00 (2006.01); C10G 67/02 (2006.01)
CPC (source: EP US)
C10G 65/04 (2013.01 - EP US); C10G 67/02 (2013.01 - EP US); C10G 69/02 (2013.01 - EP US); C10G 2300/1044 (2013.01 - EP US); C10G 2300/202 (2013.01 - EP US); C10G 2300/207 (2013.01 - EP US); C10G 2300/301 (2013.01 - EP US); C10G 2300/4006 (2013.01 - EP US); C10G 2300/4012 (2013.01 - EP US); C10G 2300/807 (2013.01 - EP US)
Citation (search report)
- [A] US 4132632 A 19790102 - YU ALBERT P, et al
- [X] WO 0179391 A1 20011025 - EXXONMOBIL RES & ENG CO [US]
- [X] US 2005252831 A1 20051117 - DYSARD JEFFREY M [US], et al
- [X] EP 0755995 A1 19970129 - MITSUBISHI OIL CO [JP]
- [X] WO 2005033930 A2 20050414 - EXXONMOBIL RES & ENG CO [US], et al
- [A] US 3349027 A 19671024 - CARR NORMAN L, et al
- [A] US 5846406 A 19981208 - SUDHAKAR CHAKKA [US], et al
- [A] US 5906730 A 19990525 - HATANAKA SHIGETO [JP], et al
- See references of WO 2007061701A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2007114156 A1 20070524; BR PI0618818 A2 20160913; CA 2630340 A1 20070531; CA 2630340 C 20151222; CN 101313053 A 20081126; CN 101313053 B 20120125; EP 1954785 A1 20080813; EP 1954785 A4 20110622; JP 2009517499 A 20090430; JP 5396084 B2 20140122; WO 2007061701 A1 20070531
DOCDB simple family (application)
US 28658005 A 20051123; BR PI0618818 A 20061114; CA 2630340 A 20061114; CN 200680043957 A 20061114; EP 06827807 A 20061114; JP 2008542340 A 20061114; US 2006044231 W 20061114