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| Number | Title | Issue Date |
| 7351326 | FCC closed cyclone with snorkel Thermal cracking in a riser cracking, closed cyclone, fluidized catalytic cracking process is reduced. A snorkel or flow conduit having an inlet just above the catalyst stripper moves stripper vapor into the closed cyclone. The system preferably operates without a s... | 04/01/2008 |
| 7276210 | Stripping apparatus and process A stripping apparatus for desorbing gases from solid particles through which flows counter-currently a stripping fluid is described, which comprises a series of sets of at least two parallel, segmented, baffle plates each, with the segmented baffles being oriented s... | 10/02/2007 |
| 7118715 | Stripping process with disproportionately distributed openings on baffles A baffle-style stripper for an FCC process comprising sloped baffles in which a greater volumetric flow rate of stripping medium permeates openings in a bottom section of the baffle than through a top section of the baffle for low catalyst flux stripping operations.... | 10/10/2006 |
| 7077997 | Stripping apparatus An FCC apparatus uses a cantilevered support for supporting baffles in a stripping vessel. Only one end of the support is fastened to a wall of a contacting conduit or a wall of the stripping vessel and the other end is spaced apart from the near wall of the contact... | 07/18/2006 |
| 7022221 | Stripping apparatus and process An FCC apparatus uses a cantilevered support for supporting baffles in a stripping vessel. Only one end of the support is fastened to a wall of a contacting conduit or a wall of the stripping vessel and the other end is spaced apart from the near wall of the contact... | 04/04/2006 |
| 6780308 | Stripping process with disproportionately distributed openings on baffles A baffle-style stripper for an FCC process comprising sloped baffles in which a greater volumetric flow rate of stripping medium permeates openings in a bottom section of the baffle than through a top section of the baffle for low catalyst flux stripping operations.... | 08/24/2004 |
| 6740227 | Stripping process with fully distributed openings on baffles A baffle-style stripper for an FCC process having a complete or nearly complete coverage of stripping openings over the sloped surface of the baffle will provide improved stripping efficiency and catalyst flux through the stripper. The complete distribution of relat... | 05/25/2004 |
| 6723227 | Fluidized catalytic cracking process Fluidized catalytic cracking process which process comprises: (a) separating the hydrocarbon product from the spent catalyst by means of one or more gas-solid separation steps; (b) stripping the spent catalyst in a dense phase fluidized stripping zone by introducing... | 04/20/2004 |
| 6652736 | Stripping method for extracting solid fluidized particles and implementing device The invention concerns a stripping method for extracting solid fluidized particles whereby the particles to be stripped are subjected to a first stripping in a first chamber (9), then at least a second stripping in a second chamber (10) wherein are provid... | 11/25/2003 |
| 6458265 | Diesel fuel having a very high iso-paraffin to normal paraffin mole ratio A diesel fuel having at least 50% C10 to C20 paraffins, wherein the iso-paraffin to normal paraffin mole ratio is up to 21:1 and higher. This diesel fuel can be produced from a feed containing at least 90% C10+ normal para... | 10/01/2002 |
| 6010618 | FCC process with two zone short contact time reaction conduit An FCC process provides ultrashort catalyst and feed contacting in an FCC riser by recovering a short contact product stream in an intermediate section of the riser. The remainder of the catalyst and gas mixture continues through the riser along a continu... | 01/04/2000 |
| 5910240 | FCC unit catalyst stripper An improved stripper section design is provided for use in fluid catalytic cracking (FCC) units. The stripper section contains means for imparting rotational movement to the FCC cracking catalyst as it traverses the stripping section. In one embodiment th... | 06/08/1999 |
| 5868922 | Analyzer system for strippable hydrocarbon on FCC catalyst A FCC process in which spent catalyst is stripped of hydrocarbon in a stripping zone prior to entering the regenerator. In order to maximize the amount of strippable hydrocarbon removed in the stripping zone with minimal use of stripping gas, a sample of ... | 02/09/1999 |
| 5863417 | Method for analyzing for strippable hydrocarbon on FCC catalyst A FCC process in which spent catalyst is stripped of hydrocarbon in a stripping zone prior to entering the regenerator. In order to maximize the amount of strippable hydrocarbon removed in the stripping zone, a sample of spent catalyst is removed prior to... | 01/26/1999 |
| 5853568 | Fluid cat cracking heavy using stripped catalyst for feed preheat and regenerator temperature control A fluid cat cracking process for catalytically cracking a feed containing vanadium into lower boiling products, includes a cat cracker and a regenerator, with the feed entering the catalytic cracking zone preheated by indirect heat exchange with spent, st... | 12/29/1998 |
| 5846402 | Process for catalytic cracking of petroleum based feed stocks A process for selective catalytic cracking of a petroleum-based feedstock to produce a product having a high yield of liquified petroleum gas (LPG) and light olefins having 3 to 4 carbons includes providing a fluidized bed reactor which is a high velocity... | 12/08/1998 |
| 5702589 | Process for converting olefinic hydrocarbons using spent FCC catalyst Disclosed is a process for converting olefinic hydrocarbons using spent FCC catalysts which comprises using spent FCC catalysts, optionally containing spent FCC additives, in the reactor/stripper part of the FCCU, instead of or in addition to a separate o... | 12/30/1997 |
| 5665949 | Catalytic cracking process for hydrocarbons A process for separating catalyst particles in the catalytic cracking of reacted hydrocarbons includes feeding the reacted hydrobarbons to an unconfined cyclone device made up of a diplegless cyclone opening directly into a large volume separator vessel d... | 09/09/1997 |
| 5584986 | Fluidized process for improved stripping and/or cooling of particulate spent solids, and reduction of sulfur oxide emissions A fluidized process which comprises contacting a hydrocarbon feedstock with a fluidized particulate solid in a contacting zone wherein carbonaceous deposits accumulate on the solid and the solid becomes spent and wherein the carbonaceous deposits are burn... | 12/17/1996 |
| 5584985 | FCC separation method and apparatus with improved stripping In this invention a cyclonic separation method and apparatus discharges particulate solids and gaseous fluids into a separation vessel from a discharge opening of a central conduit and withdraws separated gaseous fluids from the separation vessel that con... | 12/17/1996 |
| 5549814 | FCC stripper with spoke arrangement for bi-directional catalyst stripping An FCC stripper uses a grid arrangement that provides increased contacting of stripping fluid and catalyst through multiple levels of stripping grids while using a configuration that permits access through the stripper vessel for maintenance and inspectio... | 08/27/1996 |
| 5531884 | FCC catalyst stripper A fluidized catalytic cracking (FCC) process and apparatus uses a catalyst stripper with slant trays or shed trays having "downcomers". Downcomers, vertical catalyst/gas contacting elements, provide a vertical, countercurrent region for catalyst/stripping... | 07/02/1996 |
| 5474669 | Side mounted FCC stripper with two-zone stripping A side-by-side reactor vessel and stripping vessel arrangement uses a rejection vessel to collect the catalyst from the bottom of a reactor vessel and eliminate stagnant layers of catalyst within the reactor vessel while increasing the efficiency of a str... | 12/12/1995 |
| 5430222 | Apparatus for the catalytic cracking in the fluid state of hydrocarbon feedstocks An apparatus for the catalytic cracking in the fluid state of hydrocarbon feedstocks which comprises a riser-type column (2); at the top of the riser (2) and concentric therewith, a chamber (1) for separation of the hydrocarbon vapors and the coke-laden c... | 07/04/1995 |
| 5389231 | Catalytic cracking process and apparatus therefor A catalytic cracking process and apparatus wherein hot regenerated catalyst particles from the dense phase of the regenerator are passed through a heat exchanger in indirect heat exchange with stripped catalyst particles whereby the former are cooled and ... | 02/14/1995 |
| 5380426 | Active bed fluidized catalyst stripping A fluidized catalytic cracking process and apparatus with an active bed annular spent catalyst stripper is disclosed. An annular catalyst stripper disposed about a riser reactor is separated, by a baffle or fluid flow, into a secondary stripper nearer the... | 01/10/1995 |
| 5376261 | Process and apparatus for non-mechanical flow control of catalyst around a catalyst regenerator A process and apparatus for controlling the flow of FCC catalyst around a catalyst regenerator, using a non-mechanical valve, is disclosed. The preferred non-mechanical valve provides a de-aeration section, addition of fluidizing gas, a "U" trap seal, and... | 12/27/1994 |
| 5364515 | Fluidized catalytic cracking of hydrocarbons utilizing a vented riser An FCC process and apparatus is arranged to provide a low volume dilute disengagement zone in a reactor vessel. A vented riser that provides an open discharge of catalyst and gaseous products is directly discharged into a reactor vessel. The interior of t... | 11/15/1994 |
| 5348642 | Catalytic cracking process with circulation of hot, regenerated catalyst to the stripping zone A catalytic cracking process and apparatus wherein particles of cracking catalyst circulate continuously between a reaction zone and a regeneration zone and hot regenerated catalyst from the regeneration zone contacts hydrocarbon feed in the reaction zone... | 09/20/1994 |
| 5332704 | Fluidized process for improving the quality of a particulate regenerated solid A fluidized solid process for upgrading or converting a hydrocarbon feedstock wherein carbonaceous deposits accumulate on a particulate fluidized solid and are burned in a regenerator to regenerate the solid, the regenerated solid and entrained combustion... | 07/26/1994 |
| 5284575 | Process for fast fluidized bed catalyst stripping A fluidized catalytic cracking process operates with a turbulent or fast fluidized bed (FFB) spent catalyst stripper. Higher vapor velocities in the stripper improve stripping. Preferably spent catalyst is added to the stripper via cyclone diplegs. Prefer... | 02/08/1994 |
| 5215653 | Catalyst inventory control in an ebullated bed process An improved method of controlling catalyst inventory in the reactor of an ebullated bed process has been discovered. Pressure differentials are measured to calculate a catalyst inventory characterization factor. This factor is calculated by means of a new... | 06/01/1993 |
| 5141625 | Second stage stripping and lift gas supply The use of lift gas for FCC risers is improved by the direct use of stripping vapors from a second stage of catalyst stripping as a lift gas. Reactor vapors recovered primarily from the stripping section of an FCC reactor/regenerator section provide an ex... | 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 |
| 5100536 | Method of processing substances A method of processing hydrocarbon substances including coal, heavy crude oil, and bitumen by hydrogenating the hydrocarbon substance with a gas containing from 20%-100% hydrogen at a pressure in the range of from 50 bar to 700 bar and at a temperature in... | 03/31/1992 |
| 5062945 | Method of FCC spent catalyst stripping for improved efficiency and reduced hydrocarbon flow to regenerator A method and apparatus are disclosed to reduce the amount of unstripped hydrocarbon flowing to the regenerator in an FCC unit. The catalyst stripper section is heated by indirect heat exchange with a mixture of hot regenerator flue gas and regenerated cat... | 11/05/1991 |
| 5059305 | Multistage FCC catalyst stripping Operational flexibility of a fluid catalytic cracking process is improved by directly cooling regenerated catalyst in an external catalyst cooler/stripper (ECCS). Regenerated catalyst withdrawn from the catalytic cracking unit regenerator is mixed with sp... | 10/22/1991 |
| 5015363 | FCC stripping method This invention provides an improved method for stripping hydrocarbons from spent catalyst which has been used in effecting hydrocarbon conversion reactions prior to the regeneration of this catalyst by combustion of carbon deposits upon the catalyst. The ... | 05/14/1991 |
| 5001095 | Method and apparatus for controlling moisture by flue gas segregation A semi-continuous process for combusting coke from catalyst particles in a fixed bed is improved by segregating flue gas from the combustion process into a high moisture content flue gas stream which is withdrawn from the process and a relatively low mois... | 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 |
