US Patent No: 4,181,599

Number of patents in Portfolio can not be more than 2000

Naphtha processing including reforming, isomerization and cracking over a ZSM-5-type catalyst

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Abstract

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A straight-run naphtha is fractionated into a light naphtha fraction and a heavy naptha fraction containing methylcyclopentane and heavier hydrocarbons. The heavy fraction is reformed and the C.sub.5 -C.sub.6 paraffin portion of the reformate combined with the light naphtha fraction for isomerization. The heavy reformate is converted over a ZSM-5-type catalyst to produce a product enriched in aromatics which may be sent for BTX recovery or to a gasoline pool as a high-octane gasoline blending stock.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CHEVRON RESEARCH COMPANYSAN FRANCISCO, CA8

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hughes, Thomas R Charlotte, NC 17 208
Miller, Stephen J San Francisco, CA 365 3251

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Patent Info (Count) # Cites Year
 
UOP LLC (16)
* 4,747,933 Isomerization unit with integrated feed and product separation facilities 5 1987
* 5,003,118 Isomerization of benzene-containing feedstocks 29 1989
* 5,200,059 Reformulated-gasoline production 7 1991
* 5,198,097 Reformulated-gasoline production 9 1991
* 5,360,534 Isomerization of split-feed benzene-containing paraffinic feedstocks 18 1993
* 5,472,593 BTX from naphtha without extraction 19 1994
* 5,792,338 BTX from naphtha without extraction 16 1995
* 6,001,241 BTX from naphtha without extraction 13 1998
6,979,396 Combination reforming and isomerization process 5 2004
7,435,329 Combination reforming and isomerization process 0 2005
7,740,751 Process for heating a stream for a hydrocarbon conversion process 0 2006
7,534,925 Isomerization of benzene-containing feedstocks 1 2007
7,531,704 Isomerization of benzene-containing feedstocks 1 2007
7,875,757 Combination reforming and isomerization process 0 2008
8,282,814 Fired heater for a hydrocarbon conversion process 0 2009
7,638,665 Isomerization of benzene-containing feedstocks 1 2009
 
CHEVRON U.S.A. INC. (3)
8,366,909 Reforming process at low pressure 0 2009
8,658,021 Multi-stage reforming process to produce high octane gasoline 0 2010
8,882,992 Multi-stage reforming process to produce high octane gasoline 0 2013
 
Mobil Oil Corporation (2)
* 4,647,368 Naphtha upgrading process 33 1985
* 5,395,513 Fluid bed catalytic upgrading of reformate 3 1993
 
ATLANTIC RICHFIELD COMPANY (1)
* 4,923,589 Process for reforming nephthene and paraffin-containing hydrocarbons in the naphtha boiling range and isomerizing C5-C6 normal paraffin feedstock to produce a high octane gasoline 0 1987
 
INSTITUT FRANCAIS DU PETROLE (1)
* 4,911,822 Combined hydroreforming-hydroisomerization process 11 1987
* Cited By Examiner