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| Number | Title | Issue Date |
| 5183558 | Heavy oil catalytic cracking process and apparatus A process and apparatus for fluidized catalytic cracking of heavy oils is disclosed using a modified high efficiency catalyst regenerator. A fast fluidized bed coke combustor, which is essentially free of gas/catalyst separation means, partially regenerat... | 02/02/1993 |
| 5160426 | Process and apparatus for indirect heating of catalyst stripper above a bubbling bed catalyst regenerator A process and apparatus for achieving hot catalyst stripping of spent FCC catalyst in a stripper mounted over a bubbling bed regenerator. Hot catalyst stripping is achieved by indirect transfer of heat from the regenerator to the stripper. Heat pipes, sur... | 11/03/1992 |
| 5160603 | Catalytic cracking with sulfur compound added to the feed A catalytic cracking process for heavy metals and asphaltene containing feed is disclosed. A reactive sulfur compound, preferably H2 S, is dissolved in the heavy feed and then kept at a temperature and for a time sufficient to at least partiall... | 11/03/1992 |
| 5158919 | Catalyst regeneration in a single stage regenerator converted to a two stage high efficiency regenerator A process and apparatus for fluidized bed catalyst regeneration. A mixture of spent catalyst, recycled hot regenerated catalyst and regeneration gas are charged to a riser having an outlet connective with a coke combustor immersed in a fluidized bed of ca... | 10/27/1992 |
| 5145654 | Apparatus for multi-stage regeneration of catalyst in a bubbling bed catalyst regenerator and side mounted fast fluidized bed regenerator A process and apparatus are disclosed for achieving turbulent or fast fluidized bed regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. A... | 09/08/1992 |
| 5143874 | Catalyst regenetation in high efficiency regenerator heated by indirect heat exchange A process and apparatus for high efficiency regeneration of spent FCC catalyst in an existing, single dense bed FCC regenerator is disclosed. Spent catalyst is added to a coke combustor immersed within the existing regenerator vessel catalyst bed. A dilut... | 09/01/1992 |
| 5141712 | Process and apparatus for fast fluidized bed regeneration of catalyst in a bubbling bed catalyst regenerator A process and apparatus are disclosed for achieving turbulent or fast fluidized bed regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. A... | 08/25/1992 |
| 5139649 | Process for multi-stage fast fluidized bed regeneration of catalyst A process and apparatus for achieving turbulent or fast fluidized bed regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. A coke combusto... | 08/18/1992 |
| 5130012 | Process and apparatus for reducing NOx emissions from high-efficiency FFC regenerators A fluidized catalytic cracking process using a high efficiency regenerator comprising a coke combustor, a dilute phase transport riser, and a second fluidized bed with catalyst recirculation to the coke combustor, is operated to reduce NOx emis... | 07/14/1992 |
| 5128109 | Heavy oil catalytic cracking apparatus A fluidized catalytic cracking process and apparatus operates with a two stage hot stripper between the reactor and catalyst regenerator. Addition of hot, regenerated catalyst to spent catalyst from the reactor heats the spent catalyst in the first stripp... | 07/07/1992 |
| 5128108 | Apparatus for fast fluidized bed regeneration of catalyst in a bubbling bed catalyst regenerator A process and apparatus for achieving turbulent or fast fluidized bed regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. A closed coke c... | 07/07/1992 |
| 5126036 | Process and apparatus for split feed of spent catalyst to high efficiency catalyst regenerator A process and apparatus for regeneration of coked catalyst used in the fluidized cracking of heavy oils is disclosed. A high efficiency catalyst regenerator, with a fast fluidized bed coke combustor, dilute phase transport riser, and second fluidized bed ... | 06/30/1992 |
| 5098553 | Catalytic cracking process using regenerator with multiple catalyst outlets An improved process for regeneration of catalyst used in fluidized catalytic cracking of hydrocarbons using a cross-flow or swirl type catalyst regenerator is disclosed. Instead of a single catalyst withdrawal outlet for regenerated catalyst, multiple cat... | 03/24/1992 |
| 5077253 | Layered cracking catalyst and method of manufacture and use thereof A layered catalyst contains a core of at least one, and preferably three, molecular sieve components within a shell layer of reduced molecular sieve content. A preferred catalyst consists of a core of a large pore molecular sieve, preferably a dealuminize... | 12/31/1991 |
| 5066627 | Process for simultaneous heating and cooling a fast fluidized bed catalyst regenerator A process for simultaneously heating and cooling of spent FCC catalyst during regeneration in a high efficiency FCC regenerator, one using a fast fluidized bed coke combustor. The coke combustor burns coke from spent catalyst in a turbulent or fast fluidi... | 11/19/1991 |
| 5063028 | Process and apparatus for regeneration of FCC catalyst Reduced thermal overstressing and cracking in the cone of a high efficiency regenerator for fluidized catalytic cracking catalyst is achieved by providing a cylindrical skirt at the base of the cone. The skirt defines an annular space which allows for exp... | 11/05/1991 |
| 5062944 | Catalytic cracking process with multiple catalyst outlets An improved process and apparatus are disclosed for fluidized catalytic cracking of hydrocarbons using a cross-flow or swirl type catalyst regenerator. Instead of a single catalyst withdrawal outlet for regenerated catalyst, multiple catalyst withdrawal p... | 11/05/1991 |
| 5055176 | Multi component catalyst and a process for catalytic cracking of heavy hydrocarbon feed to lighter products A catalytic cracking catalyst and process are disclosed using a catalyst containing: a matrix, a large pore molecular sieve, a shape selective paraffin cracking/isomerization zeolite and a shape selective aliphatic aromatization zeolite. An exemplary cata... | 10/08/1991 |
| 5053573 | Reduction of benzene content of reformate by reaction with cycle oils Conversion of benzene to heavier aromatics by contact with alkyl polynucleararomatics, preferably FCC heavy cycle oil, in the presence of an alkylation/transalkylation catalyst is disclosed. Efficient conversion of relatively dilute benzene in reformate i... | 10/01/1991 |
| 5053204 | Multiple feed point catalytic cracking apparatus using elutriable catalyst mixture A catalytic cracking process and apparatus operates with multiple feed injection points to a riser reactor with several enlarged regions. An elutriable catalyst mixture is used, comprising a conventionally sized cracking catalyst and a faster settling, sh... | 10/01/1991 |
| 5053579 | Process for upgrading unstable naphthas A process for upgrading of unstable olefins, naphthas, and dienes, such as coker naphthas, is disclosed. The olefins in the unstable naphthas are oligomerized over a shape selective zeolite to gasoline and distillate products. The dienes are catalytically... | 10/01/1991 |
| 5047140 | Process and apparatus for multi-stage regeneration of catalyst in a bubbling bed catalyst regenerator and side mounted fast fluidized bed regenerator A process and apparatus are disclosed for achieving turbulent or fast fluidized bed regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. A... | 09/10/1991 |
| 5043055 | Process and apparatus for hot catalyst stripping above a bubbling bed catalyst regenerator A process and apparatus for achieving multistage, hot catalyst stripping of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. Hot catalyst stripping is... | 08/27/1991 |
| 5037531 | Catalytic cracking process A catalytic cracking process is disclosed using a catalyst comprising a framework dealuminate Y zeolite, which is rare earth and aluminum exchanged.... | 08/06/1991 |
| 5037528 | Lubricant production process with product viscosity control High viscosity index, low pour point lubricants are produced by the oligomerization of a wax-derived lubricant fraction. The fraction may be produced from slack wax or de-oiled wax by hydroisomerization over zeolite beta or hydrocracking/isomerization ove... | 08/06/1991 |
| 5037538 | Catalytic cracking process with isolated catalyst for conversion of NO.sub. x Oxides of nitrogen (NOx) emissions from an FCC regenerator are reduced by adding a DeNOx catalyst to the FCC regenerator in a form whereby the DeNOx catalyst remains segregated within the FCC regenerator. This permits use ... | 08/06/1991 |
| 5034115 | Process and apparatus for fast fluidized bed regeneration of catalyst in a bubbling bed catalyst regenerator A process and apparatus are disclosed for achieving turbulent or fast fluidized bed regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. A... | 07/23/1991 |
| 5032252 | Process and apparatus for hot catalyst stripping in a bubbling bed catalyst regenerator A process and apparatus for achieving multistage, hot catalyst stripping of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. A secondary or hot cataly... | 07/16/1991 |
| 5032251 | Process and apparatus for fast fluidized bed regeneration of catalyst in a bubbling bed catalyst regenerator A process and apparatus for achieving turbulent or fast fluidized bed regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. A closed coke c... | 07/16/1991 |
| 5021222 | Resid cracking apparatus This application is directed to a process and apparatus for regenerating an elutriable mixture of fluidized catalytic cracking (FCC) catalyst and a demetallizing additive. Deactivated catalyst and coke containing additive are added to a single dense bed r... | 06/04/1991 |
| 5019239 | Inverted fractionation apparatus and use in a heavy oil catalytic cracking process A process and apparatus for fractionation of a superheated vapor in a fractionation column is disclosed. A conventional fractionator, having an inlet for hot vapors at the base, and a plurality of products withdrawn via side draws is modified by physicall... | 05/28/1991 |
| 5015362 | Catalytic conversion of NOx over carbonaceous particles Oxides of nitrogen (NOx) emissions are catalytically reduced by contacting a flue gas contain NOx with a carbonaceous substance, preferably sponge coke or coal, in the presence of a catalyst effective for promoting the reduction of N... | 05/14/1991 |
| 5011592 | Process for control of multistage catalyst regeneration with full then partial CO combustion A process for controlled, multi-stage regeneration of FCC catalyst is disclosed. A modified high efficiency catalyst regenerator, with a fast fluidized bed coke combustor, dilute phase transport riser, and second fluidized bed regenerates the catalyst in ... | 04/30/1991 |
| 5006497 | Multi component catalyst and a process for catalytic cracking of heavy hydrocarbon feed to lighter products A catalytic cracking catalyst and process are disclosed using a catalyst containing: a matrix, a large pore molecular sieve, a shape selective paraffin cracking/isomerization zeolite and a shape selective aliphatic aromatization zeolite. An exemplary cata... | 04/09/1991 |
| 5002654 | Reducing NOx emissions with zinc catalyst A process for regeneration of cracking catalyst while minimizing NOx emissions is disclosed. A zinc-based DeNOx catalyst is present in an amount and in a form which reduces NOx emissions. Relatively small amounts of zinc o... | 03/26/1991 |
| 5001096 | Metal passivating agents The invention describes the preparation of novel cracking catalysts by surface coating conventional cracking catalysts with passivators that act as metals traps. The coating of passivators is weakly bound to the catalyst so as to permit the coating to con... | 03/19/1991 |
| 5000838 | Low efficiency deasphalting and catalytic cracking A process for deasphalting a heavy hydrocarbon feed and catalytically cracking same is disclosed. Relatively low efficiency deasphalting is used to remove at least a majority of the metals in the feed, but to leave at least 10% of the asphaltenes and at l... | 03/19/1991 |
| 5000841 | Heavy oil catalytic cracking process and apparatus A fluidized catalytic cracking process operates with a hot stripper to improve stripping of spent catalyst from the FCC process. The catalyst from the hot stripper is cooled by direct contact heat exchange with a source or cooled regenerated catalyst. Coo... | 03/19/1991 |
| 4997800 | Fluidized bed combustion A process for fluidized bed catalyst regeneration while minimizing emissions of NOx. The process uses a single, dense phase fluidized bed of particles wherein a combustible substance is burned to produce heat and a flue gas containing CO, CO2, O2 and NOx.... | 03/05/1991 |
| 4994173 | Method of adding zsm-5 containing catalyst to fluid bed catalytic cracking units Modified ZSM-5 type zeolite catalyst is prepared by controlled aging in a moving bed catalytic cracking unit. The modified catalyst exhibits significant olefin isomerization activity and reduced paraffin cracking activity. Hydrocarbons are cracked to prod... | 02/19/1991 |
