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| Number | Title | Issue Date |
| 7951739 | Bathtub-type spent catalyst distributor for effective counter-current regeneration in fluid catalytic cracking units An improved spent catalyst regenerator which contains sub-troughs branching off from the main trough, distribution troughs which extend outward from the sides of the main trough and the sub-troughs, and downflow tubes extending downward from the bottom of the main t... | 05/31/2011 |
| 7793859 | Fluidized catalytic cracking feed nozzle A nozzle for the atomized spray of liquid hydrocarbon feed in a fluidized catalytic cracking apparatus having two or more slots with at least one lateral slot wall formed at an angle of from about 30 to about 60 degrees from the axis of the discharge. Also a method ... | 09/14/2010 |
| 7772449 | Removal of acid gases and sulfur compounds from hydrocarbon gas streams in a caustic tower The present invention provides a process for treating a hydrocarbon feed gas stream containing acid gases (CO2, H2S and mercaptans) by contacting the feed gas stream in a multi-section caustic tower, the bottom sections employing a recirculatin... | 08/10/2010 |
| 7745365 | Bathtub-type spent catalyst distributor for effective counter-current regeneration in fluid catalytic cracking units An improved spent catalyst regenerator which contains sub-troughs branching off from the main trough, distribution troughs which extend outward from the sides of the main trough and the sub-troughs, and downflow tubes extending downward from the bottom of the main t... | 06/29/2010 |
| 7744067 | Three phase vapor distributor A mass and/or heat transfer column is provided with a multiphase vapor distributor with distributes a vapor stream about the inner periphery of the column. ... | 06/29/2010 |
| 7591939 | Integrated desulfurization and FCC process The present invention is describes a novel technique for producing commercial hydrocarbon materials using a fluid catalytic cracking unit employing recycling of light cycle oil in combination with desulfurization catalysts. ... | 09/22/2009 |
| 7482502 | Process for cracking hydrocarbons using improved furnace reactor tubes The present invention discloses a process for cracking a hydrocarbon feedstock into olefinic hydrocarbon products in a furnace at a temperature of above about 1300° F. in a reactor furnace tube comprising a plurality of reaction lines constructed of a temperature-r... | 01/27/2009 |
| 7479218 | 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. ... | 01/20/2009 |
| 7429363 | Riser termination device The present invention provides an improved separator for use in hydrocarbon cracking process. ... | 09/30/2008 |
| 7402290 | Condensation reduction in fluid mixing Methods and apparatus are disclosed for mixing fluid streams of different compositions to minimize fluid condensation inside a mixing vessel where the objective is to produce an all-vapor mixture product. ... | 07/22/2008 |
| 7273543 | Process and apparatus for controlling catalyst temperature in a catalyst stripper A process and an apparatus for catalytic cracking a hydrocarbon feed to lighter hydrocarbon employing a catalyst cooler in flow communication with a catalyst stripper is disclosed. ... | 09/25/2007 |
| 7048041 | Systems and apparatuses for stabilizing reactor furnace tubes Systems and apparatuses for stabilizing the movement of the reactor furnace tubes of a fired heater, furnace, heat exchanger or other device utilizing reactor furnace tubes to thereby reduce harmful stresses on the tubes, extend the useful life of the tubes, increas... | 05/23/2006 |
| 6923940 | Riser termination device A bath tub solids container for containing solids separated from cracked product vapors produced in a riser reactor and issuing from a separator. The bath tub solids container receives and contains solids from the separator, has a collar which fits around the riser ... | 08/02/2005 |
| 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 |
| 6751527 | Heat and material balance method of process control for petrochemical plants and oil refineries A method comprising: a) selecting a loading variable from operating variables, the loading variable being directly related to total energy input into the system and equipment constraint of the system; b) selecting a performance specification variable w... | 06/15/2004 |
| 6692552 | Riser termination device The present invention provides a novel separator for use in a hydrocarbon cracking process and a novel spent catalyst stripping device and process wherein the separator includes a downcomer pipe having a vertical window for allowing the separated vapor to... | 02/17/2004 |
| 6576805 | Cat cracker gas plant process for increased olefins recovery The invention relates to a new process for more efficient separation and recovery of light olefins such as ethylene and propylene from a fluid catalytic cracking unit. The new process invention for recovering olefins from a mixture of cracked hydrocarbons... | 06/10/2003 |
| 6576132 | Quench water pretreat process A process for pretreating a oily/water stream for closed loop dilution steam production within an ethylene plant using countercurrent multi-stage extraction to remove both free and dissolved organic solutes from in-situ (net) quench water with an organic ... | 06/10/2003 |
| 6528027 | Cracking furance having radiant heating tubes the inlet and outlet legs of which are paired within the firebox The present invention provides a furnace and process that relies on a multiplicity of radiant heating tubes, each in the form of a U-shaped coil, that are mounted within a furnace firebox such that an inlet leg of any one of the plural tubes is immediatel... | 03/04/2003 |
| 6482312 | Particulate solids cracking apparatus and process A catalytic cracking unit is disclosed which provides for separation and quenching of the effluent with a total kinetic residence time of from 0.1 to 0.6 seconds.... | 11/19/2002 |
| 6395952 | Chemical absorption process for recovering olefins from cracked gases The present invention provides a method for recovering high purity olefins from cracked gas effluents or other paraffin/olefin gaseous mixtures by use of a chemical absorption process.... | 05/28/2002 |
| 6297414 | Deep selective hydrogenation process The present invention provides an improved method for deep selective hydrogenation for use in recovering high purity olefins from cracked gas effluents or other paraffin/olefin gaseous mixtures by use of a chemical absorption process.... | 10/02/2001 |
