Shell Oil Comapny

Shell Internationale Research Maatschappij, B.v.

Paul Benjerman Himelfarb

Andreas Klemt

Guido Seng

Wenzhong Zhang

Wassim Klink

Opinder Kishan Bhan

Cornelius Mark Bolinger

Charles Eugene Wilson

Joseph Broun Powell

Zaida Diaz

Juan Pedro Arhancet

David M Singleton

Dane Clark Grenoble

Robert A Plundo

Brian Scott Vanderwilp

Michael Norris Treybig

William Joseph Carrick

Mohammed Shahjahan Kazi

Brendan Dermont Murray

A reactor for reducing the concentration of NOx in a stream comprising: an inlet for the stream; an outlet for a stream containing a reduced concentration of NOx; one or more catalyst beds comprising a ceramic or metallic foam with a NOx reduction catalyst; one or more flow paths from the inlet to the outlet that passes through at least one catalyst bed wherein the catalyst beds are closed at the top and bottom so that the flow path through the catalyst bed passes through the sides of the catalyst bed in a lateral flow is described.

Reactor for reducing nitrogen oxides

A catalyst bed comprising a ceramic or metallic foam comprising one or more NOreduction catalysts is described. A method for reducing the concentration of NOin a dust containing gas stream comprising: a) passing a first gas stream containing NOinto a contacting zone; b) contacting the first gas stream with a ceramic or metallic foam catalyst bed having one or more flow paths through the catalyst bed wherein the ceramic or metallic foam comprises a NOreduction catalyst to produce a second gas stream with a reduced NOconcentration; and c) passing the second gas stream out of the contacting zone wherein the first gas stream has a dust concentration of at least 5 mg/Nmand the pressure drop of the foam catalyst bed increases by 300% or less relative to the initial pressure drop of the foam catalyst bed due to dust accumulation, measured under the same conditions is also described.

Catalyst bed and method for reducing nitrogen oxides

A catalyst bed comprising a ceramic or metallic foam comprising one or more NOx reduction catalysts is described. Further, a method for reducing the concentration of NOx in a dust containing gas stream comprising: a) passing a first gas stream containing NOx into a contacting zone; b) contacting the first gas stream with a ceramic or metallic foam catalyst bed having one or more flow paths through the catalyst bed wherein the ceramic or metallic foam comprises a NOx reduction catalyst to produce a second gas stream with a reduced NOx concentration; and c) passing the second gas stream out of the contacting zone wherein the first gas stream has a dust concentration of at least 5 mg/Nm3 and the second gas stream comprises at least 50% of the amount of dust in the first gas stream.

Disclosed is a process for the selective hydrogenation of diolefins and sulfur compounds that are contained in a pyrolysis gasoline feedstream. The process includes utilizing a single hydrotreating reaction stage by introducing the pyrolysis gasoline feedstock that includes a diolefin concentration and an organic sulfur concentration into a reactor that is loaded with a high activity hydrotreating catalyst and which is operated under selective hydrogenation conditions. A reactor effluent having a reduced diolefin concentration and a reduced organic sulfur concentration is yielded from the reactor and is separated into a portion that is recycled as a reactor feed. The remaining portion of the reactor effluent is passed downstream for further processing or handling.

Process for the selective hydrogenation and hydrodesulferization of a pyrolysis gasoline feedstock

A process for the deep desulfurization of a heavy pyrolysis gasoline to very low levels of organic sulfur, e.g., 30 ppmv or less, with minimal octane number loss through aromatics saturation. The deep desulfurization is accomplished by contacting the heavy pyrolysis gasoline feedstock, partially in liquid and partially in gaseous phase, with a hydrogen treat gas containing a minimum HS level in the presence of a hydrogenation catalyst in a one or two reactor system operated in trickle flow, using a low temperature, moderate pressure operating condition.

Process for the deep desulfurization of heavy pyrolysis gasoline

A catalyst having dual functionality for the removal of arsenic and the selective hydrogenation of diolefins from monoolefin-containing hydrocarbon streams that have an arsenic concentration and a diolefin concentration, and processes for making and using such catalyst. The catalyst is a heat treated shaped mixture of a refractory oxide and a Group VIII metal that is overlaid with additional Group VIII metal.

Process and catalyst for the selective hydrogenation of diolefins contained in an olefin containing stream and for the removal of arsenic therefrom and a method of making such catalyst

Described is a method for the selective hydrodesulfurization of an olefin-containing hydrocarbon feedstock that uses a catalyst composition having a high content of a nickel component and an effective but small amount of a molybdenum component supported on a porous refractory oxide. A preferred catalyst composition contains an immaterial amount of a cobalt component.

Method for the selective hydrodesulfurization of an olefin containing hydrocarbon feedstock

The invention pertains to a process of removing dienes from an olefin feedstock. A preferred olefin feedstock is for the production of primary alcohol compositions by skeletal isomerization of the olefins followed by hydroformylation. In this preferred embodiment, the olefin feedstock may be purified before and/or after skeletal isomerization. The olefins in the feedstock preferably have a carbon chain length of about 8 to about 36 carbon atoms, preferably about 10 to about 20 carbon atoms, most preferably about 12 to about 18 carbon atoms.

Diene removal from an olefin feedstock

The present invention relates to an improved process for the hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds as impurities, the aromatics hydrogenation being conducted in a hydrogenation reactor in the presence of a nickel based catalyst. The improvement comprises operating the hydrogenation reactor at a reaction temperature sufficiently high from the start of a run, that the thiopheneic compounds are decomposed and substantially absorbed into the bulk of the nickel catalyst, thereby substantially extending the life of the catalyst.

Process for hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds

A process for making a selectively branched alcohol composition contacting a lower olefin feed comprising linear olefins having at least 3 carbon atoms and a concentration of phosphorous-containing compounds with a sorbent comprising a metal or metal oxide on a support, thereby substantially reducing the concentration of phosphorous-containing compounds and producing a purified lower olefin feed. The purified lower olefin feed is skeletally isomerized and then treated to selectively hydrogenate dienes before hydroformylation to produce selectively branched alcohols.

Phosphorous removal and diene removal, when using diene sensitive catalyst, during conversion of olefins to branched primary alcohols

A solid, particulate catalyst composition is provided containing an active nickel component in which the nickel constitutes from about 25 to about 60 wt % of the catalyst composition; a molybdenum component in which the molybdenum constitutes from about 5 to about 20 wt % of the catalyst composition; and a binder component comprising at least one of oxides of silica, zirconium, aluminum, zinc and calcium, each of the calcium, aluminum and zinc being present in an amount no greater than about 2 wt %, preferably about 0 to 1 wt %. The catalyst is designed for the selective hydrogenation of 3-hydroxypropanal to 1,3-propanediol in aqueous solution.

Growing community of inventors

Houston, TX, United States of America

Paul Benjerman Himelfarb