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| Number | Title | Issue Date |
| 8062507 | Stripping process with multi-sloped baffles A process for stripping gases from catalyst material in which catalyst travels down baffles at a first acute angle and then at a second acute angle on the same baffle. Traveling down the baffle at the second angle assures the catalyst will cross a downcomer channel ... | 11/22/2011 |
| 7419585 | Process for upgrading residua A process for upgrading a residua feedstock using a short vapor contact time thermal process unit comprised of a horizontal moving bed of fluidized hot particles. The residua feedstock is preferably atomized so that the Sauter mean diameter of the residua feedstock ... | 09/02/2008 |
| 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 |
| 7112311 | Cooling method of hydrotreating plant and cooling unit therefor A cooling method of a hydrotreating plant having a desulfurization section (1) including a furnace (12) for heating liquid to be processed, reactors (14, 15) for hydrotreating sulfur to generate hydrogen sulfide, a hydrogen sulfide absorber (... | 09/26/2006 |
| 7101474 | Method and process with refractory shelf for hydrodynamic mixing zone A shelf is incorporated into a typical FCC riser that permits the tips of the nozzles to extend past the wall of the riser while preventing the tips from promoting coke build-up and protecting the tips from erosion. The shelf can be part of an angled section that of... | 09/05/2006 |
| 6984311 | Fluid-solid contacting method An apparatus and method for contacting fluids in a fluid-solids contacting chamber is disclosed. The fluid-solid contacting chamber has a plurality of beds, and the chamber comprises a plurality of conduits and outlet ports that are capable of providing improved flu... | 01/10/2006 |
| 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 |
| 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 |
| 6616900 | 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... | 09/09/2003 |
| 6287522 | FCC apparatus with dual riser A process for the dual riser contacting of a primary feed and a secondary recycle feed fraction uses independent recovery of the separate streams from the riser cracking zone to improve the product yields and properties. Separate recovery segregates the u... | 09/11/2001 |
| 6187176 | Process for the production of medicinal white oil A three stage process for producing high quality white oils, particularly food grade mineral oils from mineral oil distillates. The first reaction stage preferably employs a sulfur resistant hydrotreating catalyst and produces a product suitable for use a... | 02/13/2001 |
| 6139720 | FCC process with carbon monoxide management and hot stripping The production of carbon monoxide as a combustion off-gas is maximized by the use of a hot stripping zone arrangement that provides catalyst mixing to establish a uniform catalyst temperature and thorough contacting of the well-mixed hot catalyst in a con... | 10/31/2000 |
| 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 |
| 5820747 | Steam cracking process and facility comprising injection of powder which is collected at a single point A steam cracking process and facility is described which comprises injection of erosive powder to effect at least partial decoking of transfer line exchangers without interrupting the steam cracking stream. The powder, preferably injected just upstream of... | 10/13/1998 |
| 5723040 | Fluid catalytic cracking process and apparatus The present invention provides a method for improving the contacting of feedstock and regenerated catalytic particulates in certain fluid catalytic cracking processes and apparatus.... | 03/03/1998 |
| 5662868 | Short residence time cracking apparatus and process A novel apparatus and process for the cracking of hydrocarbons is disclosed which is particularly useful in revamping an existing FCC unit to a short residence time FCC unit.... | 09/02/1997 |
| 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 |
| 5565177 | 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... | 10/15/1996 |
| 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 |
| 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 |
| 5310477 | FCC process with secondary dealkylation zone FCC process uses an open reactor vessel to house cyclones or other separation devices that reduce the carry through of product gases with the catalyst into the reactor vessel to less than 10 wt. % so that the catalyst in the reactor vessel provides a seco... | 05/10/1994 |
| 5308474 | Plug flow vented riser An FCC reactor achieves greater utilization of the space within the reactor vessel by using a vented riser arrangement having an inlet opening at the bottom of a vented riser collector. The inlet opening at the bottom of the vented riser collector allows ... | 05/03/1994 |
| 5176815 | FCC process with secondary conversion zone An FCC process uses an open reactor vessel to house cyclones or other separation devices that reduce the carry though of product gases with the catalyst into the reactor vessel to less than 5 wt. % so that the catalyst in the reactor vessel can contact a ... | 01/05/1993 |
| 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 |
| 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 |
| 4921596 | Catalytic cracking process with reduced pressure stripping The present invention describes improved FCC and TCC stripper operations by incorporating a stripper operated at a reduced pressure. The improved strippers of the invention will increase total liquid hydrocarbon yield while reducing the coke load on the r... | 05/01/1990 |
| 4917790 | Heavy oil catalytic cracking process and 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... | 04/17/1990 |
| 4789458 | Fluid catalytic cracking with plurality of catalyst stripping zones A fluid catalytic cracking (FCC) process and apparatus is described which includes a high temperature stripper (hot stripper) to control the carbon level, hydrogen level, and sulfur level on spent catalyst, followed by single or multi-stage regeneration. ... | 12/06/1988 |
| 4786402 | Preparation of medicinal white oils and medicinal paraffins Medicinal white oils and medicinal paraffins are prepared from petroleum fractions containing aromatics and nitrogen, oxygen and sulfur compounds, e.g. light and heavy atmospheric gas oils, vacuum gas oils and residues, which have been pretreated in a fir... | 11/22/1988 |
| 4738829 | Apparatus for spent catalyst treating for fluidized catalytic cracking systems Apparatus for increasing the overall efficiency of fluidized catalytic cracking (FCC) with crystalline zeolitic catalysts is disclosed. Separated or spent cracking catalyst after reaction with hydrocarbonaceous material is first stripped and then subjecte... | 04/19/1988 |
| 4623446 | Closed cyclone FCC catalyst separation with stripping gas injection and direct steam injection Disclosed is a method and apparatus for fluid catalytic cracking (FCC). The output of a riser conversion zone is fed to a riser cyclone separator, a primary cyclone separator, and secondary cyclone separator, connected in series within a single reactor ve... | 11/18/1986 |
| 4574044 | Method for spent catalyst treating for fluidized catalytic cracking systems A method for increasing the overall efficiency of fluidized catalytic cracking (FCC) with crystalline zeolitic catalysts is disclosed. Separated or spend cracking catalyst after reaction with hydrocarbonaceous material is first stripped and then subjected... | 03/04/1986 |
| 4464250 | Stripping hydrocarbons from catalyst with combustion gases A process for economically converting carbo-metallic oils to lighter products. The carbo-metallic oils contain 650° F. and material which is characterized by a carbon residue on pyrolysis of at least about 1 and a Nickel Equivalents of heavy metals conte... | 08/07/1984 |
| 4424116 | Converting and stripping heavy hydrocarbons in two stages of riser conversion with regenerated catalyst A process for economically converting carbo-metallic oils to lighter products. The carbo-metallic oils contain 650° F.+ material which is characterized by a carbon residue on pyrolysis of at least about 1 and a Nickel Equivalents of heavy metals content ... | 01/03/1984 |
| 4331533 | Method and apparatus for cracking residual oils A hydrocarbon conversion-catalyst regeneration process and apparatus is described for converting residual oils and regeneration of catalyst in two separate low and higher temperature regeneration stages stacked one above the other on the same or different... | 05/25/1982 |
