Abstract: A process for upgrading a heavy hydrocarbon feed includes the steps of: providing a hydrocarbon feedstock including a fraction having a boiling point greater than or equal to about 320.degree. C.; mixing the feedstock with steam so as to provide a reaction feedstock; providing a catalyst including a first metal selected from the group consisting of Group VIII non-noble metals and a second metal selected from the group consisting of alkali metals, the first and second metals being supported on a support selected from the group consisting of kaolin, alumina, silica, carbon, petroleum cokes and mixtures thereof; and contacting the reaction feedstock with the catalyst at steam conversion conditions so as to provide a reaction product including an upgraded hydrocarbon fraction.
Type:
Grant
Filed:
March 2, 1999
Date of Patent:
February 29, 2000
Assignee:
Intevep, S.A.
Inventors:
Pedro Pereira, Trino Romero, Jose Velasquez, Alfonso Tusa, Iraima Rojas, William Camejo, Marcos Rosa-Brussin
Abstract: An adsorption/desorption process for selectively removing nitriles from a hydrocarbon feedstock includes the steps of: (a) providing a hydrocarbon feedstock having a nitrile content of less than or equal to about 400 ppm; (b) providing an adsorbent for selective removal of nitrile from a hydrocarbon feedstock comprising a substantially homogeneous mixture of a cationic nonacidic zeolite and an inorganic oxide matrix, the zeolite having an accessibility index of between about 0.1 to about 0.4; (c) contacting the feedstock and the adsorbent at nitrile adsorption conditions whereby at least about 80% of the nitrile content is adsorbed by the adsorbent during contact with at least about 200 volumes of the feedstock per volume of the adsorbent so as to provide a used adsorbent having nitrile molecules adsorbed thereon; and (d) contacting the used adsorbent with a desorbent at desorption conditions so as to remove the nitrile molecules and provide a renewed adsorbent.
Type:
Grant
Filed:
November 19, 1998
Date of Patent:
February 1, 2000
Assignee:
Intevep, S.A.
Inventors:
Maria M. Ramirez de Agudelo, Julia T. Guerra, Douglaines L Marcano, Zaida Hernandez
Abstract: A process comprises providing a catalyst comprising a support, a microwave absorption material, and a catalytically active phase; heating the catalyst with a source of microwave energy which is absorbed by said microwave absorption material to increase the temperature of the catalyst to a desired temperature; and contacting said heated catalyst with a hydrocarbon feedstock for upgrading same.
Type:
Grant
Filed:
July 14, 1998
Date of Patent:
January 25, 2000
Assignee:
Intevep, S.A.
Inventors:
Cesar Ovalles, Alfredo Morales, Luis A. Rivas, Nora Urbano
Abstract: A combustible fuel for diesel engines and a process for forming same in the form of a water in hydrocarbon emulsion wherein the mean water drop diameter is .ltoreq.4 .mu.m with a maximum diameter of .ltoreq.10 .mu.m.
Type:
Grant
Filed:
February 23, 1998
Date of Patent:
November 30, 1999
Assignee:
Intevep, S. A.
Inventors:
Gerardo A. Sanchez, Luis R. Marcano, Gustavo A. Nunez, Raul Saud
Abstract: An apparatus for characterizing dynamic stability of an emulsion includes a test vessel, a gap within the test vessel defined between a stationary surface and a moving surface; and an inlet for feeding an emulsion through the gap within the test vessel, whereby dynamic stability of the emulsion can be characterized based upon cycles of flow through the test vessel. Methods for characterizing dynamic stability are also disclosed.
Type:
Grant
Filed:
February 25, 1998
Date of Patent:
November 23, 1999
Assignee:
Intevep, S.A.
Inventors:
Daniel D. Joseph, Geoffrey McGrath, Gustavo Nunez, Pedro J Ortega
Abstract: A catalyst system for selective hydrogenation of sulfur-containing and nitrogen-containing compounds of a heteroaromatic organic phase includes a mixture of a noble metal selected from Group VIII of the Periodic Table of Elements and a water-soluble ligand. A process for preparing the catalyst system and hydrogenation process using the catalyst system are also provided.
Type:
Grant
Filed:
January 7, 1998
Date of Patent:
November 9, 1999
Assignee:
Intevep, S.A.
Inventors:
Daniel E. Paez, Antida Andriollo, Roberto A. Sanchez-Delgado, Norma del V. Valencia, Roberto E. Galiasso, Francisco A. Lopez
Abstract: A combustible fuel for diesel engines and a process for forming same in the form of a water in hydrocarbon emulsion wherein the mean water drop diameter is.ltoreq.4 .mu.m with a maximum diameter of.ltoreq.10 .mu.m.
Type:
Grant
Filed:
November 10, 1997
Date of Patent:
November 2, 1999
Assignee:
Intevep, S.A.
Inventors:
Hercilio Rivas, Gustavo A. Nunez, Tulio Colmenares, Manuel Chirinos
Abstract: In accordance with the present invention, a roadway for supporting vehicular traffic and which can be used over a wide variety of terrains comprises a network of interconnected modular components for supporting a road bed over which vehicles can travel and a plurality of prefabricated panels, overlaying the network of interconnected modular components, which form a road bed. The network of interconnected modular components includes a first layer of interconnected, prefabricated concrete cylinders placed over the terrain to be traversed. The concrete cylinders are formed into a number of rows whose longitudinal axes are parallel to the direction of the road. The network further includes a second layer of interconnected, prefabricated concrete cylinders placed over the first layer and joined to the first layer by a number of intermediate support devices. The concrete cylinders in the second layer have their longitudinal axes extending in a direction substantially perpendicular to the direction of the road.
Type:
Grant
Filed:
January 28, 1998
Date of Patent:
October 19, 1999
Assignee:
Intevep, S.A.
Inventors:
Nelson Covarrubias, Pierre Miura, Jose Luis Mayor, Juan Federico Urich
Abstract: A process for preparing a hydrocarbon in water emulsion includes the steps of: providing a hydrocarbon phase containing a contaminant selected from the group consisting of vanadium, sulfur, and mixtures thereof; mixing a solid additive with the hydrocarbon phase, the solid additive being selected from the group consisting of calcium compounds, magnesium compounds and mixtures thereof so as to provide a hydrocarbon suspension including the solid additive; and forming an emulsion from the hydrocarbon suspension and an aqueous phase including a surfactant so as to form a combustible hydrocarbon in water emulsion having the solid additive suspended in the hydrocarbon phase.
Type:
Grant
Filed:
November 10, 1997
Date of Patent:
October 12, 1999
Assignee:
Intevep, S.A.
Inventors:
Ignacio A. Layrisse, Nilia C Romero, Gustavo A. Nunez
Abstract: A catalyst system for selective hydrogenation of sulfur-containing and nitrogen-containing compounds of a heteroaromatic organic phase includes a mixture of a noble metal selected from Group VIII of the Periodic Table of Elements and a water-soluble ligand. A process for preparing the catalyst system and hydrogenation process using the catalyst system are also provided.
Type:
Grant
Filed:
January 7, 1998
Date of Patent:
September 28, 1999
Assignee:
Intevep. S.A.
Inventors:
Daniel E. Paez, Antida Andriollo, Roberto A. Sanchez-Delgado, Norma del V. Valencia, Roberto E. Galiasso, Francisco A. Lopez
Abstract: The present invention relates to a zeolite catalyst, a process for using the catalyst for conversion of hydrocarbons, especially naphtha and LPG feedstock, and a process for preparing the catalyst.
Type:
Grant
Filed:
April 7, 1998
Date of Patent:
September 14, 1999
Assignee:
Intevep, S.A.
Inventors:
Jorge Tejada, Juan Lujano, Yilda Romero
Abstract: The present invention relates to a system and a method for separating a hydrocarbon containing material such as crude oil from water. The system of the present invention includes a treatment tank, a layer of a fluid having a chemical affinity for the hydrocarbon contain material being separated within the tank for separating the hydrocarbon containing material from said water without any mixing and with a minimum level of turbulence, and a distribution system for introducing the water with the hydrocarbon containing material into the layer of chemical affinity fluid. The method of the present invention broadly comprises the steps of providing a treatment tank having a layer of a fluid having a chemical affinity for the hydrocarbon containing material and separating the hydrocarbon containing material from the water without any mixing and with a minimum of turbulence by introducing the water with the hydrocarbon containing material into the layer of chemical affinity fluid.
Abstract: A catalyst useful for the simultaneous and selective hydrogenation of diolefins and nitriles present in a hydrocarbon feedstock includes (a) a support material selected from the group consisting of inorganic oxide, carbon, zeolite and mixtures thereof; and (b) a catalytically active metal phase including at least two metals selected from the group consisting of at least partially reduced Group IB metals and completely reduced Group VIII metals, the active metal phase being present in an amount of about .gtoreq.0.03 wt %.
Type:
Grant
Filed:
September 19, 1997
Date of Patent:
September 7, 1999
Assignee:
Intevep, S.A.
Inventors:
Magdalena Ramirez de Agudelo, Djamal Djauadi, Julia Guerra
Abstract: A method for on line recovery of oil from an oil in water emulsion spilled in water includes the steps of: obtaining a stream of recovered material including an oil in water emulsion and water; inducing a gas into the stream and applying shear so as to provide a mixture wherein oil from the oil in water emulsion is adhered to bubbles of the gas; passing the mixture to a flotation compartment for allowing the oil adhered to the bubbles to rise to a surface of the mixture; and removing the oil from the surface of the mixture.
Type:
Grant
Filed:
September 4, 1997
Date of Patent:
August 10, 1999
Assignee:
Intevep, S.A.
Inventors:
German A. Febres, Mariano E. Gurfinkel, Geoffrey McGrath
Abstract: A method for on line recovery of oil from an oil in water emulsion spilled in water includes the steps of: obtaining a stream of recovered material including an oil in water emulsion and water; injecting a gas into the stream and applying shear so as to provide an injected mixture wherein oil from the oil in water emulsion is adhered to bubbles of the gas; passing the injected mixture to a flotation compartment for allowing the oil adhered to the bubbles to rise to a surface of the injected mixture; and removing the oil from the surface of the injected mixture.
Abstract: A process for suppressing foam formation in a bubble column reactor includes the steps of feeding a liquid and a gas to a reactor at a liquid velocity and a gas velocity respectively; and adding particles of a solid material to the liquid, wherein the particles are wettable by the liquid, and whereby foam formation in the reactor is suppressed
Type:
Grant
Filed:
October 4, 1996
Date of Patent:
July 13, 1999
Assignee:
Intevep, S.A.
Inventors:
Jose Guitian, Daniel D. Joseph, Julio Krasuk
Abstract: A process for suppressing foam formation in a vessel includes the steps of feeding a liquid and a gas to a vessel at a liquid velocity and a gas velocity respectively; adding particles of a solid material to the liquid, the particles having a particle size and particle density; and selecting at least one of the liquid velocity, particle size and particle density so as to fluidize the particles in the liquid, whereby foam formation in the vessel is suppressed. The particles are preferably liquid phase phobic particles.
Type:
Grant
Filed:
June 25, 1997
Date of Patent:
July 13, 1999
Assignee:
Intevep, S.A.
Inventors:
Clara Mata, Jose Guitian, Daniel D. Joseph, Julio Krasuk
Abstract: A catalyst system for treating sulfur and nitrogen contaminated hydrocarbon feedstock includes a matrix, at least one support medium substantially uniformly distributed through said matrix and comprising a silica alumina molecular sieve material having a composition xSiO.sub.2 :Al.sub.2 O.sub.3 :yP.sub.2 O.sub.5, wherein x is at least about 0.1, a first catalytically active metal phase supported on said support medium, said first catalytically active metal phase comprising a first metal and a second metal each selected from group VIII of the Periodic Table of Elements, said first metal being different from said second metal, a second catalytically active metal phase supported on said matrix, said second catalytically active metal phase comprising a third metal and a fourth metal each selected from group VIII of the Periodic Table of Elements and a fifth metal selected from group VIb of the Periodic Table of Elements, said third metal being different from said fourth metal.
Type:
Grant
Filed:
October 21, 1997
Date of Patent:
June 29, 1999
Assignee:
Intevep, S.A.
Inventors:
Jorge Alejandro Tejada, Yilda Margot Romero, Edito Jose Reyes
Abstract: A multi-stage process for treating n-paraffin feed is provided, including the steps of: (a) providing an n-paraffin feed; (b) contacting the n-paraffin feed with a dehydroisomerization catalyst under dehydroisomerization conditions so as to provide a dehydroisomerization product stream comprising n-paraffin, iso-paraffin, olefin and iso-olefin fractions; (c) mixing at least the iso-olefin fraction from the dehydroisomerization product stream with an alkyl alcohol to provide an etherification reaction feed; (d) contacting the etherification reaction feed with an etherification catalyst under etherification conditions so as to provide an etherification product stream comprising alkyl tert alkyl ether, n-paraffin, iso-paraffin and olefin fractions.
Abstract: The invention relates to a synthetic crystalline material and its use in catalytic conversion of organic compounds and as a sorbent. The crystalline material contains one or more microporous crystalline phases, having a micropore volume greater than or equal to about 0.15 cc/g distributed in channels between about 3 to about 15 .ANG. in average diameter which is rendered accessible by a mesopore volume of greater than or equal to about 0.1 cc/g distributed in channels between about 20 to about 100 .ANG. in average diameter. A process is also provided for preparing the crystalline material of the present invention.
Type:
Grant
Filed:
October 26, 1998
Date of Patent:
May 11, 1999
Assignee:
Intevep, S.A.
Inventors:
Juan Lujano, Yilda Romero, Jose Carrazza