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| Number | Title | Issue Date |
| 7431825 | Gasoline sulfur reduction using hydrotalcite like compounds The present invention describes novel methods for reducing sulfur in gasoline with hydrotalcite like compound additives, calcined hydrotalcite like compounds, and/or mixed metal oxide solution solutions. The additives can optionally further comprise one or more meta... | 10/07/2008 |
| 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 |
| 7156977 | Hydroprocessing process and method of retrofitting existing hydroprocessing reactors A process for hydroprocessing a hydrocarbon feed. The hydrocarbon feed is first admixed with a hydrogen rich gas. The resultant process stream is then contacted with a hydrocracking catalyst. The resultant catalyst effluent process stream is separated into a gas pha... | 01/02/2007 |
| 7083762 | Multiple riser reactor with centralized catalyst return The present invention is directed to a hydrocarbon conversion apparatus and process. The apparatus comprises the following: a plurality of riser reactors, each having a first end into which a catalyst is fed, a second end through which the catalyst can exit, and opt... | 08/01/2006 |
| 7033546 | Process and apparatus for contacting hydrocarbons with catalyst A reactor apparatus and process for contacting hydrocarbons with catalyst. The reactor apparatus comprises a plurality of tubular reactors each having a first end into which a catalyst is fed and a second end through which the catalyst and product exit the tubular r... | 04/25/2006 |
| 7008595 | Resid cracking apparatus with catalyst and adsorbent regenerators and a process thereof This invention provides a resid cracking apparatus comprising a riser, reactor, stripper cum separator with adjustable outlets in flow communication with adsorbent and catalyst regenerators for converting hydrocarbon residues containing higher concentration of conra... | 03/07/2006 |
| 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 |
| 6905591 | Deep catalytic cracking process The present invention provides a catalytic cracking reactor system and process in which a riser reactor is configured to have two sections of different radii in order to produced improved selectivity to propene and butenes as products. ... | 06/14/2005 |
| 6267873 | Fluidized catalytic cracking process A fluidized catalytic cracking process for catalytically cracking a feed to lighter products includes introducing a heated catalyst and the feed into a bottom riser of a fluidized catalytic cracking apparatus and allowing the heated catalyst and the feed ... | 07/31/2001 |
| 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 |
| 5730859 | Process for catalytically cracking paraffin rich feedstocks comprising high and low concarbon components A process for contemporaneously catalytically cracking a paraffin rich feedstock and a heavy feedstock wherein the feedstocks are segregated prior to catalytic cracking in separate reactors with regenerated particulate catalyst solids. The process provide... | 03/24/1998 |
| 5622677 | Venturi riser reactor and process for catalytic cracking An improved riser reactor containing a plurality of substantially vertically oriented venturis connected in series whereby the venturis have a maximum diameter, D1, and a minimum diameter, D2 ; and, apparatus for connecting the ventu... | 04/22/1997 |
| 5614083 | Riser disengager with suspended catalyst separation zone This FCC process suspends a layer of catalyst in a riser proximate or above the riser outlets. The density at the riser outlets is higher than the flowing density in the riser. The suspended catalyst provides a disengagement zone that enhances the separat... | 03/25/1997 |
| 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 |
| 5516420 | Magnetically separated equilibrium catalyst for specialized cracking Disclosed is a method for improving fluid cracking catalyst performance by increasing metal contamination incrementally while cracking two different feedstocks that have different concentrations of metal contaminants. The relative amount of metal contamin... | 05/14/1996 |
| 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 |
| 5435906 | Process for catalytically cracking feedstocks paraffin rich comprising high and low concarbon components A process for contemporaneously catalytically cracking a paraffin rich feedstock and a heavy feedstock wherein the feedstocks are segregated prior to catalytic cracking in separate reactors with regenerated particulate catalyst solids. The process provide... | 07/25/1995 |
| 5338439 | Process and apparatus for regeneration of FCC catalyst with reduced NOx and or dust emissions A process and apparatus for increasing the coke burning capacity of FCC catalyst regenerators is disclosed. An auxiliary regenerator receives spent catalyst from an FCC stripper and burns some of the coke at turbulent or fast fluidized bed conditions. Par... | 08/16/1994 |
| 5316662 | Integrated disengager stripper and its use in fluidized catalytic cracking process A method and apparatus for an FCC process uses means for dissipating turbulent flow at the outlet of a disengaging vessel to provide a quick separation of catalyst from product vapors and to prevent reentrainment of catalyst into the disengaging vessel. T... | 05/31/1994 |
| 5314611 | External integrated disengager stripper and its use in fluidized catalytic cracking process A method and apparatus for an FCC process uses dissipator plates at the outlet of a disengaging vessel to provide a quick separation of catalyst from product vapors and to prevent reentrainment of catalyst into the disengaging vessel. The process and appa... | 05/24/1994 |
| 5314610 | Staged catalytic cracking process A staged catalytic cracking process and apparatus is disclosed where each stage has a catalyst to oil ratio of at least 15 and there are individual hydrocarbon feeds to each stage and product removal from each stage. There is a residence time profile with... | 05/24/1994 |
| 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 |
| 5290430 | Riser disengager with suspended catalyst separation zone This FCC process suspends a catalyst and a riser proximate or above the riser cyclone inlets at a density that is higher than the flowing density in the riser. The suspended catalyst provides a disengagement zone that enhances the separation of catalyst f... | 03/01/1994 |
| 5196172 | Apparatus for the fluid catalytic cracking of hydrocarbon feed employing a separable mixture of catalyst and sorbent particles The present invention features the use of a particulate sorbent and a particulate FCC catalyst, which are physically separable, sequentially in the same FCC riser, followed by separation of commingled spent catalyst and sorbent particles from vapors, and ... | 03/23/1993 |
| 5194227 | Multiple wye catalytic cracker and process for use The conventional wye (where the clean regenerated catalyst returns from the regenerator to contact the feed as it enters the riser) is replaced with two or more wyes, all connected between the regenerator outlet and the inlet to a common short cracking ri... | 03/16/1993 |
| 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 |
| 5158669 | Disengager stripper A method and apparatus for an FCC process uses dissipator plates at the outlet of a disengaging vessel to provide a quick separation of catalyst from produce vapors and to prevent reentrainment of catalyst into the disengaging vessel. The process and appa... | 10/27/1992 |
| 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 |
| 5108580 | Two catalyst stage hydrocarbon cracking process In a two stage catalytic cracking process a heavy cycle gas oil fraction (HCGO) nominal boiling range 600° F. to 1050° F., API gravity of -10° to +10° and 65 to 95 vol % aromatics is recycled to extinction between an ebullated bed hydrocracking zone a... | 04/28/1992 |
| 5108968 | Process for treating a material wherein the material is suspended in a gaseous atmosphere A process for treating catalytic particles in a vertical chamber is disclosed. The catalytic particles comprise spent catalysts from such hydroprocesses as hydrocracking and hydroreforming. The process comprises suspending the catalytic particles in a gas... | 04/28/1992 |
| 5087349 | Process for selectively maximizing product production in fluidized catalytic cracking of hydrocarbons An improved process for controlling desired product distribution in fluidized catalytic cracking of olefins is provided wherein riser reactor temperature profiles are controlled by means of atomized quench streams provided downstream of the hydrocarbon fe... | 02/11/1992 |
| 5059302 | Method and apparatus for the fluid catalytic cracking of hydrocarbon feed employing a separable mixture of catalyst and sorbent particles The present invention features the use of a particulate sorbent and a particulate FCC catalyst, which are physically separable, sequentially in the same FCC riser, followed by separation of commingled spent catalyst and sorbent particles from vapors, and ... | 10/22/1991 |
| 5039395 | Steam-cracking in a fluid bed reaction zone The invention is directed to steam-cracking in a fluid bed reaction zone, of a charge of hydrocarbons having at least two carbon atoms per molecule. In this process the charge (3) circulates with steam (2) and inert solid particles, heated at a temperature T | 08/13/1991 |
| 5013425 | Conversion of side by side FCC unit A method of converting a side by side FCC arrangement adds a new reactor vessel and uses the regenerator vessel and reactor vessel to provide a regeneration section having at least three stages of regeneration that is used as part of an enlarged FCC proce... | 05/07/1991 |
| 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 |
| 5009769 | Process for catalytic cracking of hydrocarbons An improved process and apparatus is provided for simultaneously, independently catalytically cracking dissimilar hydrocarbon feedstocks at elevated temperatures in separate riser reactors and under respective operating parameters which permit selective c... | 04/23/1991 |
| 4999100 | Low profile fluid catalytic cracking apparatus and process A succession of low profile catalyst chambers each housing a reservoir or catalyst are alternately connected in sequence by openings below the levels of the catalyst reservoirs and openings thereabove. The catalyst in all reservoirs is fluidized by a gas ... | 03/12/1991 |
| 4966681 | Multiple riser fluidized catalytic cracking process utilizing a C3 -C4 paraffin-rich co-feed and mixed catalyst system A catalytic cracking process is described featuring multiple risers in which a variety of hydrocarbon conversion reactions take place, a stripping unit in which entrained hydrocarbon material is removed from catalyst and a regeneration zone in which spent... | 10/30/1990 |
| 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 |
