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| Number | Title | Issue Date |
| 8147676 | Delayed coking process The present invention relates to an improved delayed coking process. A coker feed, such as a vacuum resid, is treated with (i) a metal-containing agent and (ii) an oxidizing agent. The feed is treated with the oxidizing agent at an oxidizing temperature. The oxidize... | 04/03/2012 |
| 8007660 | Reduced puffing needle coke from decant oil A reduced puffing needle coke is formed from decant oil, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures. ... | 08/30/2011 |
| 7828959 | Delayed coking process and apparatus A delayed coking process and apparatus which greatly shorten the required duration of the alternating drum fill and decoking cycles and eliminate the need to perform drum quenching, draining, unheading, hydraulic decoking, reheading, pressure testing, and warming pr... | 11/09/2010 |
| 7622033 | Residual oil coking scheme A coking process and apparatus may include cracking a hydrocarbon feed stream with a catalyst, generating a hot flue gas from regenerating said catalyst, directing the hot flue gas into a spray contactor, spraying a heavy residual oil into the spray contactor, and c... | 11/24/2009 |
| 7419608 | Treating method and equipment for coke-cooling wastewater The present invention falls within the field of purifying oil-laden wastewater, which provides a method for purifying coke-cooling wastewater in a delayed coking process in petroleum chemical field. The method comprises the following steps: (a) cooling the coke-cool... | 09/02/2008 |
| 7404889 | Hydrocarbon thermal cracking using atmospheric distillation A method for thermally cracking a hydrocarbonaceous feed wherein the feed is first processed in an atmospheric thermal distillation step to form a light gasoline and atmospheric residuum mixture. The light gasoline/residuum combination is gasified at least in part i... | 07/29/2008 |
| 7371317 | Process for producing coke A delayed coking process for producing more uniform and higher quality coke by increasing the drum inlet temperature of the feedstock at least 2° F. during a fill cycle. ... | 05/13/2008 |
| 7318891 | Noah's pitch process A process for producing pitch from pitch precursors, such as wood tar, coal tar or petroleum fractions is disclosed. Direct contact heat exchange of the pitch precursor with molten metal, preferably maintained as a metal continuous bath, heats the pitch precursor to... | 01/15/2008 |
| 7318890 | Pitch fractionation and high softening point pitch A process for fractionating crude pitch by direct contact heating with molten metal is disclosed. The crude pitch, which may contain water, contaminants and/or distillables is heated by direct contact heat exchange with molten metal, preferably maintained as a metal... | 01/15/2008 |
| 7297250 | Method of and apparatus for processing heavy hydrocarbon feeds The present invention comprises a method for processing a heavy hydrocarbon feed including: supplying the heavy hydrocarbon feed to a heater for heating the heavy hydrocarbon feed; supplying the heated heavy hydrocarbon feed to an atmospheric fractionating tower for... | 11/20/2007 |
| 7247220 | Coke drum discharge system An apparatus including a coke drum for coking hydrocarbon substances, a valve disposed near the bottom of the coke drum, and a discharge conduit for removing coke from the coke drum, wherein the discharge conduit is connected to the valve such that when the valve is... | 07/24/2007 |
| 7199484 | Water current generator The underwater electrical generator includes a stator core and counter-rotating turbine blades with permanent magnets in the hubs and windings in the core housing. When tethered by the nose of the housing, the water current rotates the turbine blades generating elec... | 04/03/2007 |
| 7144498 | Supercritical hydrocarbon conversion process Supercritical conversion of hydrocarbons boiling above 538° C. (1000° F.) with a solvating hydrocarbon at a weight ratio of solvating hydrocarbon to high-boiling hydrocarbons of at least 2:1 and at conditions above the critical temperature and pressure of the high... | 12/05/2006 |
| 7070659 | System for filling openings in semiconductor products Explosive forces are used to fill interconnect material into trenches, via holes and other openings in semiconductor products. The interconnect material may be formed of metal. The metal may be heated prior to the force filling step. The explosive forces may be gene... | 07/04/2006 |
| 7041621 | Sulfided catalysts for improved performance in hydrocarbon processing A process and catalyst are disclosed for reducing coking in hydrocarbon processing reactions. The preferred embodiments employ a sulfur-containing material such as hydrogen sulfide to reduce catalyst susceptibility to deactivation from carbon deposits formed during ... | 05/09/2006 |
| 7033460 | Coke drum bottom throttling valve and system A coke drum bottom de-heading system having an internal shroud enclosure and a shroud end cap opened by a flange to a coke bottom de-heading valve capable of accepting the end of a gate valve upon actuation. Acting in coordination with the shroud enclosure to preven... | 04/25/2006 |
| 7010683 | Public key validation service A public key validation agent (PKVA) includes a registration authority which issues a first unsigned public key validation certificate (unsigned PKVC) off-line to a subject that binds a public key of the subject to a first public key serial number (PKVN). The regist... | 03/07/2006 |
| 6972085 | Continuous coking refinery methods and apparatus A system for refining hydrocarbon containing materials in a continuous coking mode may provide a pyrolyzer (1) which may be inclined to effect a liquid seal between a liquid conduction environment (6) and a gaseous conduction environment (7). A ... | 12/06/2005 |
| 6919017 | Separation process and apparatus for removal of particulate material from flash zone gas oil A process and an apparatus for removing particulate material from a flash zone gas oil stream produced in a delayed coking unit. The process and apparatus of the invention employ cyclonic separation to remove particulate material from the flash zone gas oil stream. ... | 07/19/2005 |
| 6855244 | Process for reducing coke agglomeration in coking processes In an embodiment, the invention relates to a method for reducing coke agglomeration in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for mitigating filter fouling from a coker gas oil by using a pusher ... | 02/15/2005 |
| 6830677 | Process for reducing coke agglomeration in coking processes In an embodiment, the invention relates to a method for reducing coke agglomeration in petroleum streams derived from coking processes. In a preferred embodiment, the invention relates to a method for mitigating filter fouling from a coker gas oil wherein an oxygen ... | 12/14/2004 |
| 6773579 | Process for reducing fouling in refinery processes A process for substantially decreasing fouling in a refinery unit. The process comprises preheating a feed to said refinery unit reactor zone and there-after introducing the feed into said refinery unit reactor zone for reaction. The feed is preheated for a time and... | 08/10/2004 |
| 6533922 | Process for reducing fouling in coking processes A process for decreasing fouling in a refinery unit comprising preheating a hydrocarbon feed to a refinery unit reactor zone and thereafter introducing the feed into the refinery unit reactor zone for reaction. The feed contains polymers and oligomers, an... | 03/18/2003 |
| 6387840 | Oil soluble coking additive A method for making an oil soluble coking process additive, includes the steps of: providing mixture of a metal salt in water wherein the metal salt contains a metal selected from the group consisting of alkali metals, alkaline earth metals and mixtures t... | 05/14/2002 |
| 6348146 | System and method to effectuate and control coker charge heater process fluid temperature A system and method to improve the efficiency of delayed coker charge heating by effecting and controlling the temperature of a coker process fluid, prior to its introduction to a coker charge heater. In its preferred embodiment, the instant invention str... | 02/19/2002 |
| 6348145 | Chromized refractory steel, a process for its production and its uses in anti-coking applications Coated steel articles are described which exhibit anti-coking properties, and a process for producing such articles by depositing an anti-coking coating on a matrix constituted by a steel, in general a refractory steel. These articles comprise: a refracto... | 02/19/2002 |
| 6332975 | Anode grade coke production The invention is a process for making anode grade coke which comprises solvent deasphalting a residue feedstock to obtain an essentially asphaltene-free, resin-containing stream and coking the resin-containing stream in a delayed coker to make anode coke.... | 12/25/2001 |
| 6270656 | Reduction of coker furnace tube fouling in a delayed coking process In a delayed coking process, furnace tube fouling is minimized by including a measured amount of full boiling range heavy gas oil as an additive in the furnace feed, preferably by forced recycle from a heavy gas oil stream. An additive is preferably suppl... | 08/07/2001 |
| 6204421 | Method of disposing of waste in a coking process A method for recycling a waste stream containing water and solids comprises (a) removing water from the waste stream to produce a second stream containing less than 60% by weight water, (b) drying the second stream to produce a waste feed charge containin... | 03/20/2001 |
| 6194626 | Process for the purification of a diolefin hydrocarbon stream from a naphtha steam cracker A cyclic process for the purification of a diolefin hydrocarbon stream produced in a naphtha steam cracker to produce a high quality diolefin hydrocarbon stream having extremely low levels of acetylene over an extended period because of the ability to rea... | 02/27/2001 |
| 6187147 | Delayed coker unit furnace The return bend elbow fittings connecting adjacent tubes in a delayed coker furnace are improved by subjecting the interior surface of the fittings to a diffusion hardfacing process.... | 02/13/2001 |
| 6169054 | Oil soluble coking additive, and method for making and using same A method for making an oil soluble coking process additive, includes the steps of: providing mixture of a metal salt in water wherein the metal salt contains a metal selected from the group consisting of alkali metals, alkaline earth metals and mixtures t... | 01/02/2001 |
| 6056882 | Process of breaking a sludge emulsion with a ball mill followed by separation A process for resolving even tightly emulsified oil, water and solid emulsions by the application of a sheer force sufficient to break the emulsion. In one particular application, a tank bottom sludge produced in the petroleum industry is treated with the... | 05/02/2000 |
| 6048448 | Delayed coking process and method of formulating delayed coking feed charge A process for upgrading petroleum residua to more valuable products by visbreaking or otherwise thermally cracking a petroleum residuum to produce a thermally cracked bottoms stream, vacuum distilling at least a portion of the thermally cracked bottoms st... | 04/11/2000 |
| 5952539 | Dual process for obtaining olefins A process for producing normally gaseous olefins from two different process units sharing common downstream quench and fractionation facilities, wherein one of the process units is a short contact time mechanically fluidized vaporization unit for processi... | 09/14/1999 |
| 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 |
| 5840582 | Method for determining the hydrogen-to-carbon ratio in a liquid hydrocarbon fraction and use thereof In a first embodiment of the invention, a method for determining the hydrogen-to-carbon ratio of a liquid hydrocarbon fraction is presented. A sample of the liquid fraction is subjected to an ultra-violet absorption analysis. The results of the analysis c... | 11/24/1998 |
| 5780696 | Process for recycling plastic waste The invention relates to a process for recycling waste which consists essentially of one or more plastics comprising polyvinyl chloride (PVC), in which: the waste is mixed with a heavy oil, in a reactor under an inert atmosphere, at an internal temperatur... | 07/14/1998 |
| 5711870 | Delayed coking process with water and hydrogen donors A residual oil feedstock comprises carbon residue measured according to ASTM D-4530. The feedstock is admixed with water/steam in an amount of 10 wt % to 30 wt % and optionally a hydrogen donor, such as methane and/or gas oil derived from recycle. The res... | 01/27/1998 |
| 5695631 | Process for producing petroleum needle coke Disclosed herein are a process for producing needle coke, which comprises reducing the ash content in a heavy oil obtained from fluid catalytic cracking of petroleum or in a hydrocarbon material mainly composed of said heavy oil to not more than 0.01 wt %... | 12/09/1997 |
