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Jean-luc Dubois
Jean Luc Dubois: Use of particle filters for limiting catalyst deactivation. May 19, 2011: US20110118486-A1

The invention relates to the use of monoliths as particle filters for limiting the deactivation of catalysts during catalytic reactions in multi-tubular reactors. The invention is particularly well-suited for catalytic oxidation reactions in the gaseous phase. The invention also relates to multi-tub ...


2
Hartley Owen, Paul H Schipper: Apparatus for multi-stage fast fluidized bed regeneration of catalyst. Mobil Oil Corporation, Alexander J McKillop, Malcolm D Keen, Richard D Stone, December 21, 1993: US05271905 (63 worldwide citation)

A process and apparatus for achieving turbulent or fast fluidized bed regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. A coke combustor vessel, which may be partially or totally o ...


3
Robert H Hass, Rowland C Hansford: Process for removal of hydrogen sulfide from gas streams. Union Oil Company of California, Gregory F Wirzbicki, Dean Sandford, January 19, 1982: US04311683 (44 worldwide citation)

A process for the removal of H.sub.2 S from a feed gas, and the production of sulfur therefrom, is effected by oxidation with oxygen and/or SO.sub.2 at temperatures between 250.degree. and 450.degree. F. The oxidation is conducted in the presence of an extremely stable oxidation catalyst comprising ...


4
David C Kramer: Process to prevent catalyst deactivation in activated slurry hydroprocessing. Chevron Research and Technology Company, W K Turner, A W Klaassen, March 29, 1994: US05298152 (41 worldwide citation)

An improved catalytic slurry hydroprocess comprising a hydrogenation zone having a hydrogen partial pressure of at least about 100 psia characterized by active catalyst recycle accompanied by minimal catalyst deactivation from coking or asphaltene agglomeration in which the improvement comprises the ...


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Larry L Iaccino, Teng Xu, J Scott Buchanan, Neeraj Sangar, Jeremy J Patt, Mark A Nierode, Kenneth R Clem, Mobae Afeworki: Production of aromatics from methane. ExxonMobil Chemical Patents, Andrew B Griffis, September 15, 2009: US07589246 (40 worldwide citation)

In a process for converting methane to aromatic hydrocarbons, a feed containing methane and a particulate catalytic material are supplied to a reaction zone operating under reaction conditions effective to convert at least a portion of the methane to aromatic hydrocarbons and to deposit carbonaceous ...


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Gregory A Funk, Simon H Hobbs, Anil R Oroskar, Stanley A Gembicki, Joseph A Kocal: Cocurrent simulated moving bed hydrocarbon alkylation process. UOP, Thomas K McBride, John F Spears Jr, June 4, 1996: US05523503 (40 worldwide citation)

Hydrocarbons such as isobutane and benzenes are alkylated using a solid catalyst in a process which simulates the cocurrent movement of the catalyst bed versus the reactants. This has been found to greatly reduce the rate of catalyst deactivation compared to simulated countercurrent flow. The proces ...


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Bala Subramaniam, Said Saim: In situ mitigation of coke buildup in porous catalysts with supercritical reaction media. Center For Research, Hovey Williams Timmons & Collins, March 10, 1998: US05725756 (40 worldwide citation)

A method to minimize catalyst deactivation rate and coke laydown, and maximize desired reaction rate in processing of industrially significant reactions under supercritical conditions to generate a reaction mixture stream including formed reaction products and reactants, said contacting at a desired ...


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Paul T Barger, Gregory J Thompson, Raymond R Herber, Tamotsu Imai: Alkylation/transalkylation process. UOP, Thomas K McBride, John F Spears Jr, A Blair Hughes, September 27, 1988: US04774377 (38 worldwide citation)

An alkylation-transalkylation process for the production of a monoalkylated aromatic compound is disclosed which maximizes the production of desirable monoalkylaromatic compounds, while limiting transalkylation catalyst deactivation. The process entails the combination of an alkylation reaction zone ...


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Paul T Barger, Gregory J Thompson, Raymond R Herber, Tamotsu Imai: Alkylation/transalkylation process. UOP, Thomas K McBride, John F Spears Jr, August 15, 1989: US04857666 (36 worldwide citation)

An alkylation-transalkylation process for the production of a monoalkylated aromatic compound is disclosed which maximizes the production of desirable monoalkylaromatic compounds, while limiting transalkylation catalyst deactivation. The process entails the combination of an alkylation reaction zone ...


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Charles W Degeorge, Min Chang: Slurry hydrocarbon synthesis with external product filtration. Exxon Research & Engineering Company, Jay Simon, June 23, 1998: US05770629 (35 worldwide citation)

A slurry hydrocarbon synthesis process employs a slurry filtration vessel external of the slurry reactor. Slurry from the reactor is passed through one or more gas and solids disengaging zones, one or more of which may be present in the reactor and vessel, to reduce the gas and solids content of the ...