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| Number | Title | Issue Date |
| 7399450 | Cyclone layer reactor A fluidized-bed reactor is disclosed. The fluidized-bed reactor steadies the gas flow through the fluidized bed chamber of the reactor. The swirl chamber of the reactor consists of a conical housing in which a conical insert is also situated. This creates an annular... | 07/15/2008 |
| 7279089 | Method for preventing fouling and corrosion caused by ammonium chloride and ammonium sulphates Method for preventing fouling and corrosion caused by ammonium chloride and ammonium sulphates, characterised in that it comprises injecting as an additive a choline or a derivative thereof. ... | 10/09/2007 |
| 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 |
| 6921834 | Continuous process for preparing N-phosphonomethyl glycine In general the present invention relates to a continuous process for manufacturing (N-phosphonomethyl) glycine, glyphosate, by the catalyzed oxidation of N-phosphonomethyliminodiacetic acid. Glyphosate can be provided in high yield and in a cost efficient process by... | 07/26/2005 |
| 6846405 | Circulating fluid bed reactor system This invention is to a circulating fluid bed reactor that is designed so as to have the ability to adjust catalyst holdup within the reaction zone of the reactor while maintaining substantially constant catalyst circulation rate through the reaction zone. The abilit... | 01/25/2005 |
| 6511635 | Fluid state catalytic cracking reactor having solid fastened packing element for homogeneously distributing particle flow The upstream portion of a reactor (1), contains, between the feeding area of the catalyst flow and the injection area of the charge to be cracked, at least one solid and attached packing element (6, 6'), that extends over all or part of the cross section ... | 01/28/2003 |
| 6146519 | Gas solid contact riser with redistribution An dilute phase transport riser for the contacting of particles with a gas uses redistributors along the length of the riser to prevent the formation of localized regions of high particle concentration along the wall of the riser. A series of redistributo... | 11/14/2000 |
| 5904837 | Process for fluid catalytic cracking of oils A process for the fluid catalytic cracking of oils, wherein an oil is brought into contact with catalyst particles using a fluid catalytic cracking reactor under the following conditions: a) a reaction zone outlet temperature of 580 to 630° C., catalyst/... | 05/18/1999 |
| 5840176 | Replacement of particles in a moving bed process A method for replacing particles in a process that transfers particles is disclosed. This invention employs a seal zone which is in communication with two zones of the process and in which particles that are being added to the process are purged. This inv... | 11/24/1998 |
| 5545312 | Replacement of particles in a moving bed process A method and apparatus for replacing particles in a process that transfers particles is disclosed. This invention employs a seal zone which is in communication with two zones of the process and in which particles that are being added to the process are pu... | 08/13/1996 |
| 5498326 | Process for and apparatus for catalytic cracking in two successive reaction zones The invention relates to a process for catalytic cracking and the associated apparatus in which the cracking reaction takes place in two substantially vertical and successive reaction zones, the loads being introduced into the first zone where it circulat... | 03/12/1996 |
| 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 |
| 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 |
| 4859313 | Method for reducing the temperature in a regeneration zone of a fluid catalytic cracking process A method for operating a fluid catalytic cracking unit comprising a regeneration zone and a reaction zone with a relatively reduced temperature in the regeneration zone while processing a hydrocarbon feedstock having a 50 volume percent distillation tempe... | 08/22/1989 |
| 4814068 | Fluid catalytic cracking process and apparatus for more effective regeneration of zeolite catalyst A multistage process and apparatus for regenerating fluid catalytic cracking catalyst is disclosed. Each stage preferably has a successively higher temperature, and flue gas is removed after each stage. The process may regenerate a single phase catalyst o... | 03/21/1989 |
| 4615870 | Back-mixed hydrotreating reactor A hydrotreating reactor having a plurality of vertically spaced contacting stages having frusto-conical baffles for back-mixing hydrocarbon oil being treated and a plurality of clear oil outlets in fluid communication with a corresponding plurality of ann... | 10/07/1986 |
| 4569753 | Oil upgrading by thermal and catalytic cracking A combination process is described for upgrading residual oils and high boiling portions thereof comprising metal contaminants and high boiling Conradson carbon forming compounds comprising a thermal visbreaking operation with fluidizable inert solids fol... | 02/11/1986 |
| 4436613 | Two stage catalytic cracking process A two-stage cascade flow fluid catalytic cracking process capable of converting high molecular weight hydrocarbons containing catalyst poisons into products of lower molecular weight with high activity cracking catalyst susceptible to catalyst poisons, th... | 03/13/1984 |
| 4426277 | Low severity fluid coking process A fluid coking process is provided in which a carbonaceous feed is first coked in a dense fluidized bed first coking zone and the effluent of the dense bed is passed as a suspension through a transferline second coking zone. A major portion of the solids ... | 01/17/1984 |
| 4422925 | Catalytic cracking A fluid catalytic cracking process and apparatus in which a plurality of hydrocarbon feedstocks including at least one normally gaseous paraffinic hydrocarbon feedstock and at least one normally liquid hydrocarbon feedstock are subjected to cracking react... | 12/27/1983 |
| 4410420 | Multi-zone conversion process and reactor assembly for heavy hydrocarbon feedstocks A multi-zone fluidized bed hydrocarbon conversion process and apparatus for producing gas and distillable liquid products from heavy hydrocarbon feedstocks. The feedstock is introduced into an upper fluidized bed primary cracking zone maintained at temper... | 10/18/1983 |
| 4406777 | Fixed bed reactor operation A catalytic conversion process wherein a slowly deactivating catalyst contained in a multiplicity of fixed bed is operated in a serial fashion whereby the operating temperature of each catalyst bed is higher than the preceeding bed and the last catalyst b... | 09/27/1983 |
| 4325806 | Multiple stage hydrocarbon conversion with gravity flowing catalyst particles A multiple stage catalytic conversion system in which a hydrocarbonaceous charge stock and hydrogen flow serially through a plurality of catalytic reaction zones, in each of which the catalyst particles are downwardly movable via gravity flow. At least th... | 04/20/1982 |
| 4325807 | Multiple stage hydrocarbon conversion with gravity flowing catalyst particles A multiple stage catalytic conversion system in which a hydrocarbonaceous charge stock and hydrogen flow serially through a plurality of catalytic reaction zones, in each of which the catalyst particles are downwardly movable via gravity flow. At least fo... | 04/20/1982 |
| 4272823 | Control system for a reactor Control of the temperature profile across a reactor which contains a plurality of catalyst beds is accomplished by splitting the feed to the reactor in such a manner that a portion of the feed is introduced into the first catalyst bed in the reactor and t... | 06/09/1981 |
| 4051013 | Fluid catalytic cracking process for upgrading a gasoline-range feed A fluid catalytic cracking process for simultaneously cracking a gas oil feed and upgrading a gasoline-range feed to produce high quality motor fuel. The gasoline-range feed is contacted with freshly regenerated catalyst in a relatively upstream portion o... | 09/27/1977 |
| 4051020 | Hydrocarbon conversion process for removing sulfur and nitrogen with passage of catalyst particles in a series of spaced beds A gas phase and a liquid phase pass countercurrently through a reaction vessel, and solid particles move from stage to stage in the reactor concurrently with either the liquid phase or the gas phase. In one embodiment of the invention the liquid phase is ... | 09/27/1977 |
| 3964876 | Method and apparatus for catalytically cracking hydrocarbons An apparatus for catalytically cracking hydrocarbons comprising a riser reactor having a plurality of catalyst injectors positioned along the length thereof. Adjacent to and upstream of certain of the catalyst injectors, cyclone separators are connected t... | 06/22/1976 |
