Class 208/148 - Combined gravitating bed and suspension zones

Subclass of Class 208 - Mineral oils: processes and products
Definition: Processes which include both fluid contact with a gravitating
No. of patents: 30
Last issue date: 08/24/2010

Number	Title	Issue Date
7780845	Process to manufacture low sulfur distillates The instant invention relates to a process to produce low sulfur distillate products through the hydrotreating of distillate boiling range feedstreams in the presence of a bulk metal hydrotreating catalyst. ...	08/24/2010
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
7368090	FCC spent catalyst distributor An distributor arrangement introduces spent FCC catalyst more uniformly across the dense bed of the regenerator to provide more even contact with regeneration gas in order to avoid hot spots and zones of incomplete combustion. The invention forms a fluidized hopper ...	05/06/2008
7368052	Process for discharging and transferring fluidized particles A process is disclosed for discharging and transferring upwardly fluidized particles from a dense fluidizing layer forming section to a high-velocity transferring section having a diameter which is smaller than that of the dense fluidizing fluidized layer forming se...	05/06/2008
7341142	Elastomer composite materials in low density forms and methods A bale of elastomer composite is formed of elastomer and filler, the bale having a void volume of at least 3%. In another aspect, a container is provided, at least a portion of the container being occupied by elastomer composite pieces of elastomer and filler, where...	03/11/2008
7182918	Desulfurization process A hydrocarbon desulfurization system that circulates fluidizable solid particles through a fluidized bed reactor, a fluidized bed regenerator, and a fluidized bed reducer to thereby provide for substantially continuous desulfurization of a hydrocarbon-containing flu...	02/27/2007
7033488	Method of removing and replacing catalyst in a multi-reactor cascade configuration A defined catalyst withdrawal and replacement program for optimizing the productivity and the economics of catalyst consumption in a multi-reactor system is disclosed. Catalyst cost is reduced by minimizing removal of the newest catalyst and maximizing removal of ol...	04/25/2006
6962676	Method and apparatus in a fluidized bed heat exchanger A method and an apparatus in a fluidized bed heat exchanger including a heat exchange chamber having a fluidized bed of solid particles, heat transfer surfaces, an inlet, and an outlet. Particles are fed through the inlet onto the upper surface of the bed of solid p...	11/08/2005
6958107	Cyclonic evaporator A method and apparatus for separating the components of a feed material prior to or simultaneously with at least partially vaporizing one of the components is described. The apparatus comprises at least one inlet (8) for admitting the feed material (10...	10/25/2005
5916529	Multistage moving-bed hydroprocessing reactor with separate catalyst addition and withdrawal systems for each stage, and method for hydroprocessing a hydrocarbon feed stream A method, and a reactor, for hydroprocessing a hydrocarbon feed stream through multistage moving catalyst beds contained within a single onstream reactor vessel, with separate catalyst addition and withdrawal systems for each of the multistages of moving ...	06/29/1999
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
5733440	Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed This invention makes possible substantially continuous flow of uniformly distributed hydrogen and hydrocarbon liquid across a densely packed catalyst bed to fill substantially the entire volume of a reactor vessel by introducing the fluids as alternate an...	03/31/1998
5660715	Apparatus and method for quenching in hydroprocessing of a hydrocarbon feed stream This invention makes possible substantially continuous flow of uniformly distributed hydrogen and hydrocarbon liquid across a densely packed catalyst bed which substantially fills the entire volume of a reactor vessel. Catalyst are selected to be essentia...	08/26/1997
5599440	Catalyst method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed This invention makes possible substantially continuous flow of uniformly distributed hydrogen and hydrocarbon liquid across a densely packed catalyst bed to fill substantially the entire volume of a reactor vessel by introducing the fluids as alternate an...	02/04/1997
5589057	Method for extending the life of hydroprocessing catalyst This invention makes possible substantially continuous flow of uniformly distributed hydrogen and hydrocarbon liquid across a densely packed catalyst bed to fill substantially the entire volume of a reactor vessel by introducing the fluids as alternate an...	12/31/1996
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
5498327	Catalyst, method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed This invention makes possible substantially continuous flow of uniformly distributed hydrogen and hydrocarbon liquid across a densely packed catalyst bed to fill substantially the entire volume of a reactor vessel by introducing the fluids as alternate an...	03/12/1996
5492617	Apparatus and method for quenching in hydroprocessing of a hydrocarbon feed stream This invention makes possible substantially continuous flow of uniformly distributed hydrogen and hydrocarbon liquid across a densely packed catalyst bed which substantially fills the entire volume of a reactor vessel. Catalyst are selected to be essentia...	02/20/1996
5409598	Method of hydroprocessing On-stream catalyst replacement hydroprocessing method wherein an upstream mixture of hydrogen and hydrocarbon liquid counter flows through a downwardly moving bed of hydroprocessing catalyst in a reactor vessel. The mixed feed stream of hydrogen and liqui...	04/25/1995
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
5308476	Reduced gas holdup in an ebullated bed reactor A resid refining reactor has an ebullated catalyst bed. Hydrogen gas is released into the catalyst bed at a point which is far enough above a distributor plate at the bottom of the catalyst bed to form a gas updraft in a committed zone through the bed. Th...	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
5076908	Method and apparatus for an on-stream particle replacement system for countercurrent contact of a gas and liquid feed stream with a packed bed This invention makes possible substantially continuous flow of uniformly distributed hydrogen and hydrocarbon liquid across a densely packed catalyst bed to fill substantially the entire volume of a reactor vessel by introducing the fluids as alternate an...	12/31/1991
4820494	Solids feeding device and system An apparatus for delivering fluidization gas to a bed of particulate solids to selectively, locally fluidize the solids above a delivery conduit in communication with a reaction chamber. Also an apparatus is disclosed for intimately mixing hydrocarbon fee...	04/11/1989
4514285	Catalytic cracking system A fluid catalytic hydrocarbon conversion process and apparatus in which hot freshly regenerated catalyst is contacted with hydrocarbon feedstock in a gravity flow catalytic reactor. Spent catalyst from the reactor is separated from reactants in a ballisti...	04/30/1985
4338187	Solids feeding device and system An apparatus and process for delivering fluidization gas to a bed of particulate solids to selectively locally fluidize the solids above a delivery conduit in communication with a reaction chamber. Also an apparatus and process for intimately mixing hydro...	07/06/1982
4325833	Three-stage catalyst regeneration Coke-containing catalyst is regenerated in a three-stage system to provide complete coke removal while avoiding carbon monoxide and nitrogen oxides contamination of the flue gas formed in burning the coke....	04/20/1982
4054509	Process for catalytic conversion A catalytic reactor in which feed, catalyst and diluent gas enter the bottom of a reactor which has a cross-sectional area which does not decrease substantially, preferably which has a substantially constant cross-sectional area, from the point at which c...	10/18/1977
3976433	Apparatus for catalytic conversion A catalytic reactor in which feed, catalyst and diluent gas enter the bottom of a reactor which has a cross-sectional area which does not decrease substantially, preferably which has a substantially constant cross-sectional area, from the point at which c...	08/24/1976

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Class 208/148 - Combined gravitating bed and suspension zones