Abstract: 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 flowing upward into the tower. The chimney tray includes risers with hats that have gutters to guide liquid toward the tray deck, channels to collect and drain liquid from the top of the hats to the tray deck, and baffles extending from the risers to shield the liquid collected on the tray deck from the vapor flow.
Type:
Application
Filed:
February 19, 2008
Publication date:
August 28, 2008
Applicant:
ExxonMobil Research and Engineering Company Law Department
Inventors:
Arun K. Sharma, Theodore Sideropoulos, Berne K. Stober, Brian D. Albert, Alvin U. Chen, Vikram Singh
Abstract: Supports for Fischer-Tropsch catalysts are formed by forming a particulate material from titania, alumina and optionally silica. A cobalt compound is incorporated into the particulate material which then is calcined to convert at least part of the alumina to cobalt aluminate.
Type:
Grant
Filed:
June 8, 2007
Date of Patent:
August 26, 2008
Assignee:
ExxonMobil Research and Engineering Company
Abstract: The present invention relates to emulsion compositions for starting a reformer of a fuel cell system. In particular, the invention includes emulsion compositions comprising hydrocarbon fuel, water and alkoxylated alcohol surfactants for starting a reformer of a fuel cell system.
Type:
Grant
Filed:
August 13, 2004
Date of Patent:
August 19, 2008
Assignee:
ExxonMobil Research and Engineering Company
Inventors:
Ramesh Varadaraj, Paul Joseph Berlowitz
Abstract: This invention relates to an apparatus and process for atomizing a petroleum feed. More particularly, a liquid petroleum feed is atomized with an atomization apparatus in which the apparatus has an orifice that produces a generally flat spray pattern of finely dispersed feed prior to contacting catalyst in a fluid catalytic cracking zone. The orifice has a general aspect ratio greater than 1.0 and a ratio of perimeter length-to-cross-sectional area greater than 1.5 relative to a perimeter-to-cross-sectional area ratio of a circular orifice of equivalent area. The apparatus can be used to atomize feed injected into the cracking zone of a fluid catalytic cracker.
Type:
Grant
Filed:
June 3, 2005
Date of Patent:
August 5, 2008
Assignee:
ExxonMobil Research and Engineering Company
Inventors:
Todd R. Steffens, Thomas E. Hewitt, Rathna P. Davuluri, Enrique Feliz
Abstract: A method for determining contamination in marine diesel lubricating oils. The method has been found to have particular utility in estimating asphaltenes contamination in marine diesel lubricating oils.
Type:
Grant
Filed:
June 1, 2007
Date of Patent:
August 5, 2008
Assignee:
ExxonMobil Research and Engineering Company
Abstract: The invention includes a cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and a binder phase (RS) wherein, P is a metal selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Fe, Mn and mixtures thereof, Q is carbonitride, R is a metal selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, S comprises at least one element selected from Cr, Al, Si and Y.
Type:
Grant
Filed:
February 7, 2006
Date of Patent:
August 5, 2008
Assignee:
ExxonMobil Research and Engineering Company
Inventors:
ChangMin Chun, Narasimha-Rao Venkata Bangaru, Hyun-Woo Jin, Jayoung Koo, John Roger Peterson, Robert Lee Antram, Christopher John Fowler
Abstract: A method of ex-situ activation and dry passivation of supported noble metal catalysts including the steps of reducing in the presence of hydrogen and dry passivation by cooling in an inert atmosphere and exposing to air or by filling the pores of the catalyst with a low sulfur oil before exposing to air.
Type:
Grant
Filed:
September 16, 2005
Date of Patent:
August 5, 2008
Assignee:
Exxonmobil Research and Engineering Company
Inventors:
Stephen J. McCarthy, Jean W. Beeckman, William G. Borghard, Sylvain Hantzer
Abstract: 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 two or more inlets into a spool that is connected to a coke drum and a coke drum bottom deheader valve. A combination of block valves and clean out ports provides a more effective means to clean the lines and allows fluid to be laterally dispensed in a controllable and predictable manner. The fluid is preferably introduced to the spool in opposing directions toward a central vertical axis of the spool at equal but opposing angles ranging from minus thirty (?30) to thirty (30) degrees relative to a horizontal line laterally bisecting the spool. Alternatively, however, fluid can be introduced to the spool tangentially.
Type:
Application
Filed:
March 12, 2007
Publication date:
July 31, 2008
Applicant:
ExxonMobil Research and Engineering Company
Inventors:
Te-Hung Chen, Christopher P. Eppig, Timothy M. Healy, Scott F. Massenzio, Robert W. Mosley, Rutton D. Patel
Abstract: An improved process for removing polymeric by-product (ASO) from the HF alkylation acid in an HF alkylation unit used for the production of gasoline boiling range alkylate product by olefin/iso-paraffin alkylation, comprises fractionating a portion of the circulating HF alkylation acid inventory of the unit with a portion of hot alkylate product in a fractionation zone to from an overhead product comprising HF alkylation acid and water and a bottoms fraction comprising the polymeric by-product and alkylate. The bottoms fraction is sent to the isoparaffin stripper of the unit to remove trace HF alkylation acid as overhead and form a product stream of hot alkylate as a bottoms fraction.
Type:
Application
Filed:
January 9, 2008
Publication date:
July 24, 2008
Applicant:
ExxonMobil Research and Engineering Company
Inventors:
D'Arcy H. J. Blais, Doug F. Bodeux, Steve L. Burgwin, Alexander D. Chan, Gary S. Locke, Jerry H. Squires, Sarah J. Virtue
Abstract: The present invention relates to a method of forming metallic foams using cold spray processing. The method allows for the formation of metallic foams on existing substrates as a layer. The method includes the steps of providing a substrate for coating of a metallic foam; cold spraying a mixture of metal particles and a foaming agent onto the substrate to form a substrate coated with an unexpanded metallic layer; foam heat treating the substrate coated with an unexpanded metallic layer at a temperature above the decomposition temperature of the foaming agent for a time sufficient to form a heated substrate coated with an expanded metal foam layer; and cooling the heated substrate coated with an expanded metal foam layer to about ambient temperature to form a cooled substrate coated with an expanded metal foam layer. The method of forming metallic foams on substrates finds application in the oil, gas, and chemical industry by being an integral part of casings, pipelines, transfer lines, and other flow lines.
Type:
Grant
Filed:
February 7, 2006
Date of Patent:
July 22, 2008
Assignee:
ExxonMobil Research and Engineering Company
Abstract: The present invention is related to a linear functional polymer having repeating units A, B and D. Unit A represents —CH2—, unit B represents and unit D represents where R1 represents a polar functional group. There are at least four A units separating each B unit, each D unit, and each B and D unit. The value y represents the total number of B units and is an integer greater than or equal to 1. The total number of D units is represented by h and is an integer greater than or equal to 0. And x represents the total number of A units and is an integer sufficient that the molar fraction of the B and D units in the linear functional polymer is represented by a value j defined by the equation: j = y + h x + y + h ? 0.032 . The present invention is also directed to a method for preparing such linear functional polymers by copolymerizing a first polar substituted monomer and a second non-polar unsubstituted monomer.
Type:
Grant
Filed:
October 8, 2004
Date of Patent:
July 22, 2008
Assignee:
ExxonMobil Research and Engineering Company
Inventors:
Lisa S. Baugh, Stephen E. Lehman, Jr., Kenneth B. Wagener, Donald N. Schulz, Enock Berluche
Abstract: 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 performance. Such measurement can also be used during crude oil blending to detect asphaltene precipitates that can cause fouling and can be used for monitoring other fouling streams.
Type:
Application
Filed:
December 20, 2006
Publication date:
June 26, 2008
Applicant:
ExxonMobil Research and Engineering Company
Inventors:
Mark A. Greaney, Glen B. Brons, Chris A. Wright, Daniel P. Leta
Abstract: The present invention is directed to a method that determines the necessary and sufficient tests to relate a variety of apparently non-related tests to desired final test results. The present invention also provides a method to determine those tests which, having been shown capable to be used in a high-throughput environment, are able to predict end-use qualification test results for lubricants, greases or industrial fluids. As a corollary, the present invention provides a method to select lubricant formulations and components based on apparently non-related, but predictive tests. In an applied example, the present invention is directed to a device and method that produces and evaluates formulated lubricants, functional fluids, and greases by determining previously unknown relationships between Intermediate Tests and End-use Tests.
Type:
Grant
Filed:
July 28, 2006
Date of Patent:
June 24, 2008
Assignee:
ExxonMobil Research and Engineering Company
Inventors:
Andrew Kaldor, Andrew Jackson, Manuel Anthony Francisco, Phiroz Maneck Bhagat, Eugenio Sanchez
Abstract: The present invention relates to an apparatus and a process for the high-throughput, quick screening, optimization, regeneration, reduction and activation of catalysts. More specifically, the present invention is a method and apparatus to quickly screen, optimize and regenerate multiple fast deactivating catalysts while maintaining a predefined range of time-on-stream.
Type:
Grant
Filed:
December 20, 2002
Date of Patent:
June 24, 2008
Assignee:
ExxonMobil Research and Engineering Company
Abstract: The present invention relates to an improved exhaust gas cleaning system and method for a combustion source comprising a hydrogen generation system, a sulfur oxides trap, and a nitrogen storage reduction (NSR) catalyst trap. The improved exhaust gas cleaning system and method of the present invention also provides for a water-gas-shift catalyst between the sulfur oxides trap and the NSR catalyst trap, and a clean-up catalyst downstream of the NSR catalyst trap. The invention provides also a sulfur trap regenerable at moderate temperatures with rich pulses, rather than at high temperatures. The improved exhaust gas cleaning system of the present invention provides for the sulfur released from the sulfur trap to pass through the nitrogen oxide trap with no or little poisoning of NOx storage and reduction sites, which significantly improves NSR catalyst trap lifetime and performance to meet future emissions standards.
Type:
Grant
Filed:
July 12, 2005
Date of Patent:
June 24, 2008
Assignee:
ExxonMobil Research and Engineering Company
Abstract: The invention provides a method and means of predicting, in near real-time, the detailed chemical composition of major streams in a refinery, including those downstream from the crude distillation column. The dynamically updated feed characterizations can be derived in near real time from an assay database of current crude diet, RTO information about upstream refinery units and various analyzer inputs. The chemical compositions of each stream are stored and updated in a plant wide database. A broad range of property calculations can be ascertained, either automatically or on demand, from the compositional information. An application permits users, such as operations, planning and engineering personnel, to access the database directly or indirectly (e.g., on line). This information is then used by each user to further optimize the operation of a given refinery unit and/or the plant as a whole.
Type:
Grant
Filed:
August 11, 2006
Date of Patent:
June 17, 2008
Assignee:
ExxonMobil Research and Engineering Company
Inventors:
Howard D. Franklin, Apostolos T. Georgiou, J. Douglas Kushnerick, Helen S. Wellons
Abstract: 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 in the reactor. The sparger comprises an axially-extensive tube with outlet nozzles for the hydrocarbon reactants arranged around the tube, preferably with differing radial angles, at different locations along the length of the sparger.
Type:
Application
Filed:
November 30, 2007
Publication date:
June 12, 2008
Applicant:
ExxonMobil Research and Engineering Company
Abstract: 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 feedstock to produce lower boiling products.
Type:
Application
Filed:
November 27, 2007
Publication date:
June 12, 2008
Applicant:
ExxonMobil Research and Engineering Company
Inventors:
Michael Siskin, Simon R. Kelemen, Christopher P. Eppig
Abstract: An HF alkylation process for producing gasoline boiling range alkylate product by the alkylation of a light olefin with an isoparaffin in the presence of hydrogen fluoride as an alkylation catalyst, in which the content of organic fluorides in the alkylation product stream is reduced by recontact with additional HF alkylation acid after which the hydrocarbon phase and the denser acid-containing phase are separated in a hydrocyclone. The use of the hydrocyclone enables the acid inventory of the unit to be significantly reduced which still achieving satisfactory removal of the unwanted fluoride by-products.
Type:
Application
Filed:
November 30, 2007
Publication date:
June 12, 2008
Applicant:
ExxonMobil Research and Engineering Company
Inventors:
Brian A. Cunningham, Ramon A. Strauss, Jeffrey M. Fitt
Abstract: A cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and binder phase (RS) wherein, P is at least one metal selected from the group consisting of Group IV, Group V, Group VI elements, Q is boride, R is selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, S comprises at least one element selected from Cr, Al, Si and Y.
Type:
Grant
Filed:
August 4, 2006
Date of Patent:
June 10, 2008
Assignee:
ExxonMobil Research and Engineering Company
Inventors:
Narasimha-Rao Venkata Bangaru, ChangMin Chun, Neeraj Srinivas Thirumalai, Hyun-Woo Jin, Jayoung Koo, John Roger Peterson, Robert Lee Antram, Christopher John Fowler