George S Yaluris

6881390, Apr 19, 2005

Aug 18, 2003

10/642924

George Yaluris - Columbia MD, US
John Allen Rudesill - Columbia MD, US

W. R. Grace & Co.-Conn. - Columbia MD

B01J008/00
B01J021/08
B01J021/12
B01J021/14
B01J023/00

4232391, 502241, 502242, 502243, 502244, 502245, 502247, 502250, 502251, 502252, 502257, 502261, 502262, 502263, 502302, 502303, 502304, 502309, 502312, 502314, 502318, 502326, 502327, 502328, 502330, 502331, 502333, 502334, 502339, 502415, 502439

Compositions for reduction of gas phase reduced nitrogen species and NOgenerated during a partial or incomplete combustion catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise (i) an acidic metal oxide containing substantially no zeolite, (ii) an alkali metal, alkaline earth metal, and mixtures thereof, (iii) an oxygen storage component, and (iv) a noble metal component, preferably rhodium or iridium, and mixtures thereof, are disclosed. Preferably, the compositions are used as separate additives particles circulated along with the circulating FCC catalyst inventory. Reduced emissions of gas phase reduced nitrogen species and NOin an effluent off gas of a partial or incomplete combustion FCC regenerator provide for an overall NOreduction as the effluent gas stream is passed from the FCC regenerator to a CO boiler, whereby as CO is oxidized to COa lesser amount of the reduced nitrogen species is oxidized to NO.

7030055, Apr 18, 2006

May 3, 2004

10/837846

George Yaluris - Columbia MD, US
John Allen Rudesill - Columbia MD, US

W.R. Grace & Co.-Conn. - Columbia MD

B01J 23/00
B01J 23/40
B01J 23/42
B01J 23/44
B01J 21/00

502326, 502241, 502242, 502243, 502244, 502245, 502247, 502250, 502251, 502252, 502257, 502261, 502262, 502263, 502302, 502303, 502304, 502309, 502312, 502314, 502318, 502327, 502328, 502330, 502331, 502334, 502339, 502415, 502439, 502333

Compositions for reduction of gas phase reduced nitrogen species and NOgenerated during a partial or incomplete combustion catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise (i) an acidic metal oxide containing substantially no zeolite, (ii) an alkali metal, alkaline earth metal, and mixtures thereof, (iii) an oxygen storage component, and (iv) a noble metal component, preferably rhodium or iridium, and mixtures thereof, are disclosed. Preferably, the compositions are used as separate additives particles circulated along with the circulating FCC catalyst inventory. Reduced emissions of gas phase reduced nitrogen species and NOin an effluent off gas of a partial or incomplete combustion FCC regenerator provide for an overall NOreduction as the effluent gas stream is passed from the FCC regenerator to a CO boiler, whereby as CO is oxidized to COa lesser amount of the reduced nitrogen species is oxidized to NO.

7304011, Dec 4, 2007

Apr 15, 2004

10/824913

George Yaluris - Columbia MD, US
Michael Scott Ziebarth - Columbia MD, US
Xinjin Zhao - Woodbine MD, US

W.R. Grace & Co. -Conn. - Columbia MD

B01J 29/80
B01J 29/06

502 65, 502 66, 502 67, 502 68, 502 73, 502 74, 502 77, 502 78, 502 79

Compositions for reduction of NOgenerated during a catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise a fluid catalytic cracking catalyst composition, preferably containing a Y-type zeolite, and a particulate NOcomposition containing particles of a zeolite having a pore size ranging from about 3 to about 7. 2 Angstoms and a SiOto AlOmolar ratio of less than about 500. Preferably, the NOreduction composition contains NOreduction zeolite particles bound with an inorganic binder. In the alternative, the NOreduction zeolite particles are incorporated into the cracking catalyst as an integral component of the catalyst. Compositions in accordance with the invention are very effective for the reduction of NOemissions released from the regenerator of a fluid catalytic cracking unit operating under FCC process conditions without a substantial change in conversion or yield of cracked products, e. g. , gasoline and light olefins. Processes for the use of the compositions are also disclosed.

7307038, Dec 11, 2007

Oct 21, 2002

10/277026

George Yaluris - Columbia MD, US
John Allen Rudesill - Columbia MD, US
Wilson Suárez - Sykesville MD, US

W.R. Grace & Co. -Conn. - Columbia MD

B01J 21/18
B01J 27/25
B01J 21/08
B01J 23/00

502174, 502201, 502241, 502242, 502243, 502244, 502247, 502250, 502254, 502258, 502263, 502302, 502304, 502306, 502309, 502312, 502314, 502324, 502328, 502330, 502332

Processes for preparing a composition comprising (i) an acidic metal oxide containing substantially no zeolite, (ii) an alkali metal, alkaline earth metal, and mixtures thereof, and (iii) an oxygen storage component are disclosed. Preferably, the process comprise forming a single slurry of components (i)–(iii), spray drying and calcining to obtain metal oxide particles comprising components (i)–(iii). Preferably, the slurry comprise a base peptized acidic metal oxide containing slurry wherein the component (ii) is provided in the slurry as a metal of the base. Compositions prepared are impregnated with a noble metal to provide compositions useful to reduce gas phase reduced nitrogen species and NOin an effluent off gas of a fluid catalytic cracking regenerator.

7641787, Jan 5, 2010

Nov 7, 2008

12/291379

George Yaluris - Columbia MD, US
Michael Scott Ziebarth - Columbia MD, US
Xinjin Zhao - Woodbine MD, US

W.R. Grace & Co.-Conn. - Columbia MD

C10G 11/05
C10G 47/16
C10G 47/18
C10G 47/20
B01J 29/90

208119, 208110, 20811101, 20811105, 2081111, 20811115, 2081112, 20811125, 2081113, 20811135, 20812001, 20812005, 2081201, 20812015, 2081202, 20812025, 2081203, 20812035, 502 65, 502 66, 502 67, 502 68, 502 73, 502 74, 502 77, 502 78, 502 79

Compositions for reduction of NOgenerated during a catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise a fluid catalytic cracking catalyst composition, preferably containing a Y-type zeolite, and a particulate NOcomposition containing particles of a zeolite having a pore size ranging from about 3 to about 7. 2 Angstroms and a SiOto AlOmolar ratio of less than about 500. Preferably, the NOreduction composition contains NOreduction zeolite particles bound with an inorganic binder. In the alternative, the NOreduction zeolite particles are incorporated into the cracking catalyst as an integral component of the catalyst. Compositions in accordance with the invention are very effective for the reduction of NOemissions released from the regenerator of a fluid catalytic cracking unit operating under FCC process conditions without a substantial change in conversion or yield of cracked products. Processes for the use of the compositions are also disclosed.

7695611, Apr 13, 2010

Oct 31, 2005

11/665814

George Yaluris - Park Ridge IL, US
John Rudesill - Columbia MD, US

W. R. Grace & Co.—Conn. - Columbia MD

C10G 11/04

208121, 502302, 502303, 502304, 502305, 502309, 502312, 502314, 502318, 502319, 502320, 502326, 502327, 502328, 502330, 502331, 502333, 502339

Compositions for reduction of NOemissions generated during catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise (i) an acidic metal oxide containing substantially no zeolite, (ii) an alkali metal, alkaline earth metal, and mixtures thereof, (iii) an oxygen storage component, (iv) palladium and (v) a noble metal component, preferably platinum, rhodium or iridium, and mixtures thereof. Preferably, the compositions are used as separate additives particles circulated along with the circulating FCC catalyst inventory. Reduced content of NOin an effluent off gas of a full or complete combustion FCC regenerator are accomplished while simultaneously promoting the combustion of CO.

7780935, Aug 24, 2010

Feb 23, 2006

11/886114

John Allen Rudesill - Columbia MD, US
George Yaluris - Park Ridge IL, US
Meenakshi Sundaram Krishnamoorthy - Columbia MD, US
Timothy Dougan - Pasadena MD, US

W. R. Grace & Co.-Conn. - Columbia MD

B01D 53/56
B01D 53/58
C10G 17/00

423235, 423236, 423237, 4232391, 4232392, 208254 R, 208106, 208113

A process for the reduction of NOemissions from a regeneration zone during a fluid catalytic cracking (FCC) process are disclosed. The process comprises contacting a hydrocarbon feedstock with a circulating inventory of an FCC cracking catalyst and a NOreduction composition during an FCC process. The NOreduction composition comprises at least one reduced nitrogen species component having the ability to reduce the content of reduced nitrogen species to molecular nitrogen under reducing or partial burn FCC conditions and at least one NOreduction component having the ability to convert NOto molecular nitrogen under oxidizing or full burn FCC conditions.

7906015, Mar 15, 2011

Sep 29, 2005

11/238745

George Yaluris - Columbia MD, US
John Allen Rudesill - Columbia MD, US

W.R. Grace & Co.-Conn. - Columbia MD

C10G 11/00

208113, 502241, 502242, 502243, 502244, 502245, 502247, 502250, 502251, 502252, 502262, 502263, 502302, 502303, 502304, 502312, 502314, 502318, 502326, 502327

Reduced emissions of gas phase reduced nitrogen species in the off gas of an FCC regenerator operated in a partial or incomplete mode of combustion is achieved by contacting the off gas with an oxidative catalyst/additive composition having the ability to reduce gas phase nitrogen species to molecular nitrogen and to oxidize CO under catalytic cracking conditions. The oxidative catalyst/additive composition is used in an amount less than the amount necessary to prevent afterburn. Fluidizable particles of the oxidative catalyst/additives are circulated throughout the partial or incomplete burn FCC unit along with the FCC catalyst inventory. The flue gas having a reduced content of gas phase reduced nitrogen species and NOis passed to a downstream CO boiler, preferably a low NOCO boiler. In the CO boiler, as CO is oxidized to CO, a reduced amount of gas phase reduced nitrogen species is oxidized to NO, thereby providing an increase in the overall reduction of NOemitted into the environment.