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| Number | Title | Issue Date |
| 8152903 | Hindered cyclic polyamines and their salts for acid gas scrubbing process Hindered cyclic polyamines and their salts are absorbents useful in acid gas treatment processes. ... | 04/10/2012 |
| 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 |
| 8119084 | Reactor for isoparaffin olefin alkylation A reactor for the autorefrigerant alkylation process has a cylindrical upright reactor vessel with the inlet for the refrigerant reactant and the sulfuric acid at its lower end and a series of inlets for the olefin reactant at vertically spaced intervals up the leng... | 02/21/2012 |
| 8114678 | Multi-dimensional high performance liquid chromatographic separation technique (STAR7) for quantitative determinations of 7 fractions in heavy petroleum streams boiling above 550 degrees F The present invention provides quantitation of seven classes of compounds (saturates, 1-4+ ring aromatics, sulfides, and polars) present in petroleum streams boiling from 550-1050° F. Operating the present invention in the preparative mode will allow us to load and... | 02/14/2012 |
| 8114272 | Method for treating refinery waste streams in a fluid catalytic cracking unit and an improved catalytic cracking unit for processing refinery waste streams A method of processing the waste stream includes introducing the waste stream into the Fluid Catalytic Cracking Unit such that waste stream is processed within the regenerator unit or in CO boiler unit such that the waste stream and the regenerator flue gas are burn... | 02/14/2012 |
| 8101066 | Fluidized coking process An improved fluidized coking process wherein an effective amount of a basic material, preferably an alkali or alkaline-earth metal-containing compound, is added to the coking zone to mitigate agglomeration of the coke during the coking of a heavy hydrocarbonaceous f... | 01/24/2012 |
| 8095335 | Process for mapping off-site piping systems in a refinery and/or petrochemical facility and a system for providing emergency isolation and response in a refinery and/or petrochemical facility A process of mapping piping systems associated with a refinery and petrochemical facilities is disclosed, which maps piping systems, which interconnect facility operating units with other operating units, utilities, distribution facilities and storage units. A syste... | 01/10/2012 |
| 8088281 | Separation of hydrocarbons from water A method for the removal of entrained hydrocarbons, particularly aromatics, from water by extracting the hydrocarbons in the water with a hydrocarbon which is relatively less soluble in the water than the entrained hydrocarbon. The hydrocarbons are then separated fr... | 01/03/2012 |
| 8083901 | De-entrainment tray for high capacity operation A de-entrainment device separates entrained liquid from vapor in a fluid stream that flows through a chimney tray in a distillation tower. The separated liquid is collected and shielded from the fluid stream to prevent re-entrainment of the liquid in the vapor flowi... | 12/27/2011 |
| 8080087 | Salt drying process A method of drying liquid and gaseous hydrocarbons by contacting a feed stream of the hydrocarbon with an aqueous solution of a salt drying agent prior to passing the stream through a salt dryer to remove part of the water in the stream. The aqueous solution of the ... | 12/20/2011 |
| 8066949 | Scrubber for fluid coker unit Fouling in the scrubber section of a fluid coker unit is reduced by providing perforated baffles to improve the uniformity of the gas flow profile in the scrubber by reducing the gas velocity of the cyclone outlet gases in the scrubber section of the unit. These baf... | 11/29/2011 |
| 8062504 | Method for reducing oil fouling in heat transfer equipment A method of reducing asphaltene and particulate induced fouling during the thermal processing of petroleum oils utilizes resin extracts from HSDP crude oils to disperse and solubilize asphaltenes and disperse inorganic particulate contaminants such as salts and iron... | 11/22/2011 |
| 8037928 | Chromium-enriched oxide containing material and preoxidation method of making the same to mitigate corrosion and fouling associated with heat transfer components A heat transfer component that is resistant to corrosion and fouling is disclosed. The heat transfer component includes a heat exchange surface formed from a chromium-enriched oxide containing material formed from the composition δ, ε, and ζ, wherein ζ is a stee... | 10/18/2011 |
| 8034246 | Wastewater mercury removal process A method for removing ionic, organic and elemental mercury from aqueous streams such as wastewater streams from hydrocarbon processing. The method comprises four primary removal steps. First, a mercury precipitant is added to the stream to convert dissolved ionic sp... | 10/11/2011 |
| 8002983 | Back flushable strainer device A strainer device for a fluid flow circuit removes debris and solid particles from the fluid flow to prevent plugging and reduce fouling of the system. The assembly includes a chamber that can be hydrocyclonic, a collection area, a screen assembly and a distributor ... | 08/23/2011 |
| 7981253 | Distillation tower baffle An improved de-entrainment device for use in distillation towers, especially vacuum distillation towers used for fractionating petroleum atmospheric resids is in the form of a baffle which is to be located in the portion of the tower below the feed zone and at the t... | 07/19/2011 |
| 7976640 | On-line heat exchanger cleaning method A method for the on-line cleaning of a heat exchanger used with petroleum process fluids which create coke deposits of asphaltenic origin on the exchanger tubes. The asphaltenes are removed by re-dissolution in a solvent oil of high solubility power for the asphalte... | 07/12/2011 |
| 7951340 | Mitigation of refinery process unit fouling using high-solvency-dispersive-power (HSDP) resid fractions Atmospheric and/or vacuum resid fractions of a high solvency dispersive power (HSDP) crude oil are added to a blend of crude oil to prevent fouling of crude oil refinery equipment and to perform on-line cleaning of fouled refinery equipment. The HSDP resid fractions... | 05/31/2011 |
| 7947232 | HF alkylation reactor An improved reactor for an HF alkylation unit of the shell-and-tube heat exchanger type has an axial tube bundle to provide cooling for the reactor and a centrally-located axial sparger system for injecting and dispersing the hydrocarbon reactants into the flow path... | 05/24/2011 |
| 7943037 | Hydroconversion process for petroleum resids using selective membrane separation followed by hydroconversion over carbon supported metal catalyst A heavy residual petroleum feed boiling above 650° F.+ (345° C.+) is subjected to membrane separation to produce a produce a permeate which is low in metals and Microcarbon Residue (MCR) as well as a retentate, containing most of the MCR and metals, the... | 05/17/2011 |
| 7931798 | Hydroconversion process for petroleum resids by hydroconversion over carbon supported metal catalyst followed by selective membrane separation A heavy residual petroleum feed boiling above 650° F.+ (345° C.+) is subjected to hydroconversion at elevated temperature in the presence of hydrogen at a hydrogen pressure not normally higher than 500 psig (3500 kPag) using a dispersed metal-on-carbon catalyst to... | 04/26/2011 |
| 7927479 | Focused beam reflectance measurement to optimize desalter performance and reduce downstream fouling Performance of equipment, such as a desalter, in a refinery is monitored in real-time and on-line to minimize fouling of downstream equipment. Using an instrument to measure particles and droplets in-process allows monitoring of the various operations to optimize pe... | 04/19/2011 |
| 7919058 | High-solvency-dispersive-power (HSDP) crude oil blending for fouling mitigation and on-line cleaning A high solvency dispersive power (HSDP) crude oil is added to a blend of incompatible and/or near-incompatible oils to proactively address the potential for fouling heat exchange equipment. The HSDP component dissolves asphaltene precipitates and maintains suspensio... | 04/05/2011 |
| 7914668 | Continuous coking process The invention relates to a thermal conversion process for continuously producing hydrocarbon vapor and continuously removing a free-flowing coke. The coke, such as a shot coke, can be withdrawn continuously via, e.g., a staged lock hopper system. ... | 03/29/2011 |
| 7901564 | Mitigation of refinery process unit fouling using high-solvency-dispersive-power (HSDP) resid fractions Atmospheric and/or vacuum resid fractions of a high solvency dispersive power (HSDP) crude oil are added to a blend of crude oil to prevent fouling of crude oil refinery equipment and to perform on-line cleaning of fouled refinery equipment. The HSDP resid fractions... | 03/08/2011 |
| 7847142 | HF alkylation process with acid regeneration The regeneration of HF alkylation acid in an alkylation unit is improved by withdrawing a vapor stream from the HF regenerator tower and condensing the stream to form a liquid fraction which is accumulated in a side distillation zone; the collected liquid fraction, ... | 12/07/2010 |
| 7871511 | Method to alter coke morphology using either polynuclear aromatic compounds or functionalized lignin A method for altering coke morphology in a delayed coking process of heavy oil is provided. An effective amount of one or more oil dispersible or oil soluble polynuclear aromatic compounds, or functionalized lignin, is added or contacted with the resid or heavy oil ... | 01/18/2011 |
| 7871510 | Production of an enhanced resid coker feed using ultrafiltration This invention relates to a high-pressure ultrafiltration process to produce an improved coker feed for producing a substantially free-flowing coke, preferably free-flowing shot coke from an atmospheric and/or vacuum resid feedstock. The process of this invention ut... | 01/18/2011 |
| 7862224 | Vibration actuation system with independent control of frequency and amplitude Vibrational energy generated with a pneumatic vibrator is controlled to independently adjust the amplitude and the frequency. A mechanical resonator is used to adjust the frequency. The controlled vibrational energy can be applied to equipment, such as a heat exchan... | 01/04/2011 |
| 7837879 | Visbreaking yield enhancement by ultrafiltration Ultrafiltration may be effectively used to produce visbreaker feeds of improved quality which enable the visbreaker to be operated at higher severity with higher yields of distillable products. A heavy oil feed stream is separated by ultrafiltration or membrane sepa... | 11/23/2010 |
| 7837861 | Process for benzene reduction and sulfur removal from FCC naphthas A process for the removal of sulfur compounds and benzene of a catalytically cracked petroleum naphtha comprising benzene, organic sulfur compounds and olefins, by fractionating the cracked naphtha into a relatively low boiling range, olefinic, light catalytic napht... | 11/23/2010 |
| 7837855 | High-solvency-dispersive-power (HSDP) crude oil blending for fouling mitigation and on-line cleaning A high solvency dispersive power (HSDP) crude oil is added to a blend of incompatible and/or near-incompatible oils to proactively address the potential for fouling heat exchange equipment. The HSDP component dissolves asphaltene precipitates and maintains suspensio... | 11/23/2010 |
| 7836941 | Mitigation of in-tube fouling in heat exchangers using controlled mechanical vibration Fouling of heat exchange surfaces is mitigated by a process in which a mechanical force is applied to a fixed heat exchanger to excite a vibration in the heat exchange surface and produce shear waves in the fluid adjacent the heat exchange surface. The mechanical fo... | 11/23/2010 |
| 7833407 | Method of blending high TAN and high Scrude oils and method of reducing particulate induced whole crude oil fouling and asphaltene induced whole crude oil fouling A high solvency dispersive power (HSDP) crude oil is added to a blend of incompatible oils to proactively address the potential for fouling heat exchange equipment. The HSDP component dissolves asphaltene precipitates and maintains suspension of inorganic particulat... | 11/16/2010 |
| 7823627 | Device for generating acoustic and/or vibration energy for heat exchanger tubes A device is coupled to a heat exchanger for mitigating fouling by applying a mechanical force to a fixed heat exchanger to excite a vibration in the heat exchange surface and produce shear waves in the fluid adjacent the heat exchange surface while the heat exchange... | 11/02/2010 |
| 7815775 | Optimized coke cutting method for decoking substantially free-flowing coke in delayed cokers A method for coke removal in delayed coker drums is provided. The method comprises the steps of draining from the drum of substantially free-flowing coke, performing a vibration signature analysis on the drum to identify whether and where any coke remains attached t... | 10/19/2010 |
| 7794587 | Method to alter coke morphology using metal salts of aromatic sulfonic acids and/or polysulfonic acids A method for altering coke morphology in a delayed coking process of heavy oil is provided. An effective amount of oil dispersible or oil soluble metal salts of aromatic sulfonic acids and/or polysulfonic acids is added or contacted with the resid or heavy oil at a ... | 09/14/2010 |
| 7736470 | Coker feed method and apparatus Described herein are methods and mechanisms for laterally dispensing fluid to a coke drum in a predictable and maintainable manner that alleviates thermal stress. In one embodiment, the methods and mechanisms utilize a split piping system to dispense fluid through t... | 06/15/2010 |
| 7727382 | Production and removal of free-flowing coke from delayed coker drum A method for producing and removing coke which has bulk morphology such that at least about 30 volume percent is free-flowing under the force of gravity or hydrostatic forces from a delayed coker drum. At the completion of the fill cycle, the coker drum, filled with... | 06/01/2010 |
| 7726871 | Vibration actuation system with independent control of frequency and amplitude Vibrational energy generated with a pneumatic vibrator is controlled to independently adjust the amplitude and the frequency. A mechanical resonator is used to adjust the frequency. The controlled vibrational energy can be applied to equipment, such as a heat exchan... | 06/01/2010 |
