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Browse by Category: Main > Chemistry
Class Information
Number: 502/49
Name: Catalyst, solid sorbent, or support therefor: product or process of making > Regenerating or rehabilitating catalyst or sorbent > Gas or vapor treating > Treating with free oxygen containing gas > Plural distinct oxidation stages
Description: Process including a second treatment of the spent material with an oxidizing agent differing in either location or reaction condition.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8680000 Process and vessel for regenerating a reforming catalyst Mar. 25, 2014
8673801 Process for regenerating a reforming catalyst Mar. 18, 2014
8618011 Systems and methods for regenerating a spent catalyst Dec. 31, 2013
8618012 Systems and methods for regenerating a spent catalyst Dec. 31, 2013
8563455 Process for regenerating catalyst Oct. 22, 2013
8372771 System and method for catalyst activation Feb. 12, 2013
8173567 Process for regenerating catalyst May. 8, 2012
7981832 Methods of activating chromium catalysts Jul. 19, 2011
7615510 Methods of activating chromium catalysts Nov. 10, 2009
7405174 Process for regeneration of a catalyst that contains an EUO-structural-type zeolite Jul. 29, 2008
6916417 Catalytic cracking of a residuum feedstock to produce lower molecular weight gaseous products Jul. 12, 2005
6913687 Method of producing synthesis gas from a regeneration of spent cracking catalyst Jul. 5, 2005
6710002 Method for regenerating a zeolitic catalyst Mar. 23, 2004
6585884 Method of producing synthesis gas from a regeneration of spent cracking catalyst Jul. 1, 2003
6579820 Reactor modifications for NOx reduction from a fluid catalytic cracking regeneration vessel Jun. 17, 2003
6558531 Method for maintaining heat balance in a fluidized bed catalytic cracking unit May. 6, 2003
6506702 Process and vessel for regeneration of a catalyst including monitoring and monitoring and control of combustion completion Jan. 14, 2003
6491810 Method of producing synthesis gas from a regeneration of spent cracking catalyst Dec. 10, 2002
6472340 Catalytic reforming catalyst activation Oct. 29, 2002
6464896 Low migratory photoinitiators for oxygen-scavenging compositions Oct. 15, 2002
6383965 Method of regenerating a molecular sieve catalyst May. 7, 2002
6380119 Method for regenerating a zeolitic catalyst Apr. 30, 2002
6254802 Low migratory photoinitiators for oxygen-scavenging compositions Jul. 3, 2001
6133183 Process for regenerating a catalyst for the production of aromatic compounds or for reforming, with improved oxychlorination Oct. 17, 2000
6114265 Combustion control in a fluid catalytic cracking regenerator Sep. 5, 2000
6110857 Method of minimizing iron contamination during catalyst regeneration processes Aug. 29, 2000
6103652 Staged combustion process and apparatus for regenerating a reforming or aromatic compound production catalyst in a moving bed Aug. 15, 2000
6083862 Cyclic process for oxidation of calcium sulfide Jul. 4, 2000
6034019 Method of minimizing iron contamination during catalyst regeneration processes Mar. 7, 2000
5716514 FCC NO.sub.x reduction by turbulent/laminar thermal conversion Feb. 10, 1998
5648020 Oxygen scavenging composition for low temperature use Jul. 15, 1997
5376607 Method for controlling moisture by coke composition Dec. 27, 1994
5315056 Catalyst regeneration in a dehydrogenation process May. 24, 1994
5275990 Process for regenerating a spent resid hydroprocessing catalyst using a group IIA metal Jan. 4, 1994
5232885 Process for regenerating a spent resin hydroprocessing catalyst using a group IV metal Aug. 3, 1993
5180700 Regeneration and extension of lifetime of dehydrogenation catalysts used in the preparation of 2-alkylpyrimidines Jan. 19, 1993
5124292 Process for the regeneration of activated carbon product by reverse burn gasification Jun. 23, 1992
5087596 Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst Feb. 11, 1992
5075268 Regeneration method for methanol-reforming catalyst Dec. 24, 1991
5073529 Method of regenerating a nonacidic zeolite catalyst Dec. 17, 1991
5071538 Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst Dec. 10, 1991
5004717 Process for in-situ regeneration of aged methanol catalysts Apr. 2, 1991
5002915 Process for catalyst regeneration with flue gas Mar. 26, 1991
4997799 Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst Mar. 5, 1991
4994423 Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst Feb. 19, 1991
4975399 Regeneration of hydrotreating catalyst Dec. 4, 1990
4942258 Process for preparation of methacrylic acid with regeneration of catalyst Jul. 17, 1990
4888316 Preparation of hydrotreating catalyst from spent catalyst Dec. 19, 1989
4875994 Process and apparatus for catalytic cracking of residual oils Oct. 24, 1989
4849092 Process for regenerating a hydrocarbon hydroconversion catalyst Jul. 18, 1989

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