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| Number | Title | Issue Date |
| 7780843 | Method for processing hydrocarbon pyrolysis effluent A method is provided for treating the effluent from a hydrocarbon pyrolysis unit processing heavier than naphtha feeds to recover heat and remove tar therefrom. The method comprises passing the gaseous effluent to at least one primary transfer line heat exchanger, t... | 08/24/2010 |
| 7763162 | Method for processing hydrocarbon pyrolysis effluent A method is disclosed for treating the effluent from a hydrocarbon pyrolysis unit processing heavier than naphtha feeds to recover heat and remove tar therefrom. The method comprises passing the gaseous effluent to at least one primary heat exchanger, thereby coolin... | 07/27/2010 |
| 7749372 | Method for processing hydrocarbon pyrolysis effluent A method is disclosed for treating the effluent from a hydrocarbon pyrolysis unit without employing a primary fractionator. The method comprises passing the gaseous effluent to at least one primary heat exchanger, thereby cooling the gaseous effluent and generating ... | 07/06/2010 |
| 7718049 | Method for processing hydrocarbon pyrolysis effluent A method is disclosed for treating gaseous effluent from a hydrocarbon pyrolysis unit to provide steam cracked tar of reduced asphaltene and toluene insolubles content. The method is suitable for preparing reduced viscosity tar useful as a fuel blending stock, or fe... | 05/18/2010 |
| 7674366 | Method for processing hydrocarbon pyrolysis effluent A method is disclosed for treating the effluent from a hydrocarbon pyrolysis unit without employing a primary fractionator. The method comprises cooling the gaseous effluent, e.g., by direct quench and/or at least one primary heat exchanger, thereby generating high ... | 03/09/2010 |
| 7323612 | Removal of condensable compounds from an olefin stream This invention is directed to a process for condensing and removing condensable compounds from an olefin stream containing light olefin compounds, and recovering the light olefin compounds. The process of the invention is particularly effective in removing water and... | 01/29/2008 |
| 7263859 | Process and apparatus for cooling a stream of compressed air Process and apparatus for cooling a compressed gas stream which utilizes one or more elongated vessels having a substantially vertical orientation. Each vessel has one compartment for indirect heat exchange between the compressed gas stream and a cooling stream and ... | 09/04/2007 |
| 7011740 | Catalyst recovery from light olefin FCC effluent A method and system for recovering fines from a light FCC-type effluent gas. Cracked gases from the reactor are cooled by direct contact with circulating oil in an oil quench tower. The circulating oil also washes out the catalyst fines carried with the reactor effl... | 03/14/2006 |
| 6758945 | Method and apparatus for quenching the coke drum vapor line in a coker A method and apparatus for quenching the coke drum vapor line from a coke drum to the main fractionator in a coker unit whereby the volume of quench liquid prevents the drum vapor line from plugging with carbon-based deposits. A differential pressure control techniq... | 07/06/2004 |
| 6626424 | Quench nozzle A quench nozzle design introduces quench oil tangentially into the quench tube which cools the hot gaseous pyrolysis products coming out of the hot radiant tubes in a pyrolysis furnace (in ethylene manufacture). Besides cooling the hot gases, the quench o... | 09/30/2003 |
| 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 |
| 6406613 | Mitigation of coke deposits in refinery reactor units A method for mitigating the condensation of liquid hydrocarbons and subsequent coke deposition in refinery reactor units by dew point suppression.... | 06/18/2002 |
| 6183626 | Method and device for steam cracking comprising the injection of particles upstream of a secondary quenching exchanger A steam-cracking process includes the injection, at at least one point upstream from a secondary quenching indirect exchanger (4b), of particles with a mean size of between 0.02 and 4 mm, at a velocity speed in the exchanger of 20 to 180 m/s, in sufficien... | 02/06/2001 |
| 6096188 | Anti-aging additive composition for a quench oil circuit in an ethylene production plant and method of operating the circuit An anti-aging additive composition and an operating method to control the quench oil viscosity in an ethylene production plant are described, capable of raising the yield of said plant through a control of the quench oil viscosity related to a significant... | 08/01/2000 |
| 5985940 | Method of mitigating fouling and reducing viscosity in primary fractionators and quench sections of ethylene plants A method is disclosed for mitigating fouling and reducing viscosity in primary fractionators and quench sections of ethylene plants by adding to a hydrocarbon stream a mono and/or a polyalkyl-substituted phenol-formaldehyde resin having a weight average m... | 11/16/1999 |
| 5954942 | Catalytic cracking with delayed quench A process for thermally and catalytically upgrading a heavy feed in a single riser reactor FCC unit is disclosed. A heavy feed is cracked in the base of the riser at higher than normal cracking temperatures for at least 1.0 seconds of vapor residence time... | 09/21/1999 |
| 5932089 | Petroleum coker cooling method with minimum coke drum stress A method is provided for cooling prior to decoking a petroleum coke drum having a substantially solidified mass of petroleum coke by initiating the injection of water into the coke drum while the average temperature of the coke within the coke drum is gre... | 08/03/1999 |
| 5846404 | Process for the removal of selenium from selenium-containing aqueous streams A selenium-containing aqueous stream may be used as a quenching water stream and optionally a cutting water stream in a delayed coking process to effectuate the removal of selenium from the selenium-containing aqueous stream resulting in the formation of ... | 12/08/1998 |
| 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 |
| 5736031 | Separation of hydrocarbons water/emulsifier mixtures A process for separating vaporous mixtures of hydrocarbons, water and emulsifier derived from the remediation of wellbore fluid, such as a mud containing solid particulate material in which the vaporous mixture is quenched with a hydrocarbon stream which ... | 04/07/1998 |
| 5626741 | Catalytic cracking with quenching A catalytic cracking process is disclosed in which cracking is performed in a riser reactor, catalytically cracked product is substantially separated from the catalyst in a gross-cut separator downstream of the riser reactor, and the cracked product is qu... | 05/06/1997 |
| 5445799 | Apparatus and method for thermocracking a fluid A reactor for thermocracking a fluid comprising a heat exchanger having at least one tube for conveying the fluid stream from a respective tube inlet to a tube outlet while contacting the at least one tube with a high temperature medium to effect heat tra... | 08/29/1995 |
| 5443715 | Method for upgrading steam cracker tars A process for the production of gaseous olefins which involves introducing a hydrocarbon feedstock stream into a high temperature thermal cracking zone to produce a high temperature cracked product stream, quenching the cracked product stream to stop the ... | 08/22/1995 |
| 5389232 | Riser cracking for maximum C3 and C4 olefin yields A process for catalytically cracking a heavy feed in a single riser reactor FCC unit, with delayed riser quench and large amounts of shape selective cracking additive is disclosed. The feed is preferably quenched after at least 1 second of riser cracking.... | 02/14/1995 |
| 5340545 | Particulate solids cracking apparatus A catalytic cracking unit is disclosed which provides for quenching of a riser reactor effluent downstream of a rough cut separator and upstream of a cyclone separator.... | 08/23/1994 |
| 5324486 | Hydrocarbon cracking apparatus Apparatus and process for compressing and quenching a cracked gas stream from a hydrocarbon cracking furnace including the step of feeding furnace output directly into an ejector in the effluent line, the ejector acting to quench and compress the effluent... | 06/28/1994 |
| 5324484 | Particulate solids cracking apparatus and process A catalytic cracking unit is disclosed which provides for separation and quenching of a catalytic cracking effluent.... | 06/28/1994 |
| 5320740 | Quenched multistage FCC catalyst stripping Catalyst stripping in the fluid catalytic cracking process is improved by cooling the spent catalyst to quench catalytic condensation reactions, then stripping the cooled catalyst in a primary stripper, followed by heating and a stage of hot stripping. Qu... | 06/14/1994 |
| 5310478 | Method for production of hydrocarbon diluent from heavy crude oil A method of producing hydrocarbon diluent from heavy crude oil, comprises pre-heating the crude oil to produce a heated crude oil, separating in a separator vessel by flashing the heated crude oil to produce a first vapor fraction and a first liquid fract... | 05/10/1994 |
| 5288920 | FCC riser discharge separation and quench apparatus In a fluid catalytic cracking (FCC) process riser reactor effluent is rapidly separated into spent catalyst and hydrocarbon product. The separated hydrocarbon product is immediately quenched to an unreactive temperature in the absence of quenching spent c... | 02/22/1994 |
| 5271826 | Catalytic cracking of coke producing hydrocarbons A process for thermally and catalytically upgrading a heavy feed in a single riser reactor FCC unit is disclosed. A heavy feed is added to a blast zone in the base of the riser, and sufficient hot regenerated FCC catalyst is added to induce both thermal a... | 12/21/1993 |
| 5264114 | Hydrocarbon treating process Cracked hydrocarbon gases are treated to remove contaminating compounds that react in caustic wash to form the reaction products which cause equipment fouling. The treating of the cracked hydrocarbon gases includes the contacting of a cracked hydrocarbon ... | 11/23/1993 |
| 5246568 | Catalytic dewaxing process A process for making a lubricant oil of low pour point and improved oxidation stability by catalytically hydro-dewaxing a lube chargestock containing paraffin wax in a vertical column reactor having a cascade series of fixed downflow catalyst beds over de... | 09/21/1993 |
| 5242577 | Radial flow liquid sprayer for large size vapor flow lines and use thereof A process and apparatus for spraying a liquid into a flowing vapor stream is disclosed. Multiple nozzles for injection of a liquid are radially distributed about a pipe containing a flowing vapor stream. The nozzles are arranged so that the cone shaped sp... | 09/07/1993 |
| 5219530 | Apparatus for initiating pyrolysis using a shock wave Apparatus for initiating pyrolysis of a feedstock by establishing a continuous, standing shock wave. Several embodiments of a shock wave reactor (10, 100, 150) are disclosed; each is connected to receive an ethane feedstock and a carrier fluid comprising ... | 06/15/1993 |
| 5217602 | FCC riser discharge separation and quench In a fluid catalytic cracking (FCC) process riser reactor effluent is rapidly separated into spent catalyst and hydrocarbon product. The separated hydrocarbon product is immediately quenched to an unreactive temperature in the absence of quenching spent c... | 06/08/1993 |
| 5215649 | Method for upgrading steam cracker tars A process for the production of gaseous olefins which involves introducing a hydrocarbon feedstock stream into a high temperature thermal cracking zone to produce a high temperature cracked product stream, quenching the cracked product stream to stop the ... | 06/01/1993 |
| 5205924 | Transfer line quenching process and apparatus A process and apparatus for fluidized catalytic cracking of heavy oils is disclosed. The long transfer line connecting the catalytic cracking reactor to the main fractionator is modified by incorporation of a quench zone, of enlarged cross sectional area,... | 04/27/1993 |
| 5200061 | Delayed coking During delayed coking, channels are formed in the solid coke bed to facilitate cooling of the hot coke drum. A distributor device injects a fluid, preferably steam, directly into the coke drum during delayed coking. The fluid travels through the coke bed ... | 04/06/1993 |
| 5186815 | Method of decoking an installation for steam cracking hydrocarbons, and a corresponding steam-cracking installation A method of decoking the inside walls of a hydrocarbon steam-cracking installation by means of solid particles of very small size, which particles are injected into the hydrocarbon feedstock flowing through tubes (12) of the steam-cracking furnace (10) an... | 02/16/1993 |
