Geoffrey R. Say
Engineering at Myrtle Vw Dr, Baton Rouge, LA

4180548, Dec 25, 1979

Dec 22, 1978

5/972500

Geoffrey R. Say - Baton Rouge LA
James R. Hays - Baton Rouge LA
Jagannathan N. Iyengar - Morris Plains NJ

Exxon Research & Engineering Co. - Florham Park NJ

B01D 5334

423223

A cyclic urea reaction product forms as a by-product of a hindered amine acid gas scrubbing process and results in an ultimate buildup of the material in the circulating amine scrubbing solution. The buildup of this material has a deleterious effect on acid gas removal rates and accordingly, results in inefficient acid gas removal. In the process of the present invention, the cyclic urea degradation product is removed from the circulating solution by employing a selective precipitation of the cyclic urea followed by filtration. The selective precipitation is carried out by cooling the circulating solution to a particular temperature level such that the cyclic urea comes out of solution while the other components remain in solution.

4065381, Dec 27, 1977

Dec 29, 1976

5/758053

Geoffrey R. Say - Baton Rouge LA
William C. Baird - Baton Rouge LA
Paul W. Kamienski - Baton Rouge LA

Exxon Research and Engineering Company - Linden NJ

C07C 528, C07C 900, C07C 312, C10G 3506

208134

A hydrocarbon phase separated from a hydrocarbon conversion process is solvent extracted with anhydrous liquid HF to separate metal pentafluoride which is carried over into the hydrocarbon phase. The extract of HF and metal fluoride is then combined with the catalyst phase (HF and metal pentafluoride) and stripped with hydrogen to reduce the molar ratio of HF to metal pentafluoride to the level that HF + metal pentafluoride catalyst is utilized in the hydrocarbon conversion process. The metal pentafluoride is TaF. sub. 5 and/or NbF. sub. 5 and the hydrocarbon conversion may involve isomerization, alkylation with olefins and reactions of a paraffin with another paraffin.

5588974, Dec 31, 1996

Apr 4, 1995

8/416622

Mark L. Tiller - Baton Rouge LA
James H. Taylor - Baton Rouge LA
Geoffrey R. Say - Baton Rouge LA
Norman J. Eger - Baton Rouge LA
Lawrence J. Delaune - Baton Rouge LA
Gerald A. Wilcox - Baton Rouge LA

Exxon Research and Engineering Company - Florham Park NJ

B01J 818

481279

Process, and apparatus, for the production of hydrogen and carbon monoxide in a reactor, preferably one containing a bed of a particulate solids catalyst, or catalyst and solids diluent, by contacting and reacting within the reaction zone a low molecular weight hydrocarbon feed, steam and oxygen, or a low molecular weight hydrocarbon feed and oxygen, at high temperature. An oxygen stream preheated to high temperature is fed via a nozzle inlet, or inlets, into the reactor, while the hydrocarbon and steam, or hydrocarbon, is fed via a different nozzle inlet, or inlets, into the reactor. Preferred oxygen nozzle designs are constituted of nickel-chromium-iron alloys, especially Inconel 600, and Inconel alloys of the 600 series generally. The oxygen nozzle is comprised of a tubular body with inlet, and outlets of special design, which renders the nozzle especially useful in the intensely hot oxygen environment.

5348717, Sep 20, 1994

May 11, 1993

8/060332

LeRoy R. Clavenna - Baton Rouge LA
Stephen M. Davis - Baton Rouge LA
Geoffrey R. Say - Baton Rouge LA
Rocco A. Fiato - Basking Ridge NJ

Exxon Research & Engineering Co. - Florham Park NJ

C01B 302, C01B 326, C01B 3118

4234182

A process utilizing a particulate catalyst, or particulate catalyst admixed with particulate heat transfer solids for conducting high temperature fluidized bed syn gas operations. Hydrogen and carbon monoxide are produced from a low molecular weight hydrocarbon by contact thereof, at high temperature in the presence of oxygen, or steam and oxygen, with a fluidized bed comprising said particulate solids. In one of its forms, barium hexaluminate is employed as a heat transfer solid, in concentrations ranging generally from about 10 wt. % to about 99. 9 wt. %, in admixture with a particulate catalyst containing a metal, or metals, component catalytic for the production of hydrogen and carbon monoxide from low molecular weight hydrocarbons contacted with a fluidized bed of the catalyst at high temperature hydrothermal conditions. The catalyst, suitably one having a barium hexaluminate carrier component, is employed in concentration ranging generally from about 0. 1 wt. % to about 90 wt. %.

5360778, Nov 1, 1994

May 11, 1993

8/060378

Stephen M. Davis - Baton Rouge LA
LeRoy R. Clavenna - Baton Rouge LA
Geoffrey R. Say - Baton Rouge LA
Rocco A. Fiato - Basking Ridge NJ

Exxon Research and Engineering Company - Florham Park NJ

B01J 2002, B01J 2030, B01J 2102

502202

High surface purity heat transfer solids are formed, suitably by washing and treating particulate refractory inorganic solids, notably alumina, which contains as impurities up to about 0. 5 wt. % silicon and/or up to about 500 wppm boron, with an acid, or dilute acid solution sufficient to reduce the concentration of silicon and boron in the outer peripheral surface layer of the particles, e. g. , as measured inwardly toward the center of a particle to a depth of about 50. ANG. using X-ray photoelectron spectroscopy, to no greater than about 5 atom percent silicon and boron, preferably about 2 atom percent silicon and boron, based on the total number of cations within said outer peripheral surface layer, thereby reducing the tendency of said particles to sinter and agglomerate in the conversion of said hydrocarbon to hydrogen and carbon monoxide in a fluidized bed synthesis gas operation vis-a-vis particles otherwise similar except that the particles are not treated with the acid. The tendency of the particles to sinter and agglomerate is further reduced by the additional removal of sodium, iron, calcium, and titanium impurities from the outer peripheral surface layer of the particles. Preferably the latter named impurities, or impurities other than silicon and boron, are reduced to a concentration below about 20 atom %, more preferably to a concentration below about 15 atom %, in the outer surface layer of the particles.

5360777, Nov 1, 1994

May 11, 1993

8/060395

Stephen M. Davis - Baton Rouge LA
LeRoy R. Clavenna - Baton Rouge LA
Rocco A. Fiato - Basking Ridge NJ
Geoffrey R. Say - Baton Rouge LA

Exxon Research and Engineering Company - Florham Park NJ

B01J 2002, B01J 2030, B01J 2102

502202

Alumina heat transfer solids are admixed with a catalyst, or catalysts, and used in conducting high temperature fluidized bed reactions, particularly in a process for the production of hydrogen and carbon monoxide from a low molecular weight hydrocarbon by contact with a fluidized bed of catalyst and said heat transfer solids at high temperature in the presence of oxygen, or steam, or both oxygen and steam. The particulate heat transfer solids are characterized as having a performance index, PI, greater than 20, preferably greater than 40, as characterized by the formula PI=[(i). times. (ii). times. (iii). times. (iv)]. sup. -1 where (i) the peripheral outer surface of the particle contains <5 atom % (Si+B) as impurities, and (ii) <20 atom % Na, Fe, Ca and Ti as impurities, where the bulk concentrations of the (Si+B) is sufficient to migrate into and contaminate the outer surface layer of the particles at process conditions. Moreover the (iii) tapped bulk density of the particles range from about 1. 2 g/cc to about 2.

5395406, Mar 7, 1995

May 11, 1993

8/060371

LeRoy R. Clavenna - Baton Rouge LA
Stephen M. Davis - Baton Rouge LA
Rocco A. Fiato - Basking Ridge NJ
Geoffrey R. Say - Baton Rouge LA

Exxon Research and Engineering Company - Florham Park NJ

C01F 718, B01J 2358

481987

A structurally modified alumina useful as a catalyst support, or heat transfer solid for fluidized bed synthesis gas processing. A Group IIA metal, or metals, particularly magnesium and barium, is composited with a particulate alumina to provide a catalyst support, or alumina heat transfer solid, having increased resistance to sintering and agglomeration; properties which promote defluidization of the bed in conducting fluidized bed reactions at high temperatures. The particles of preference are represented by formulas (1) and (2), a composite particle being represented by formula (1), as follows: M. sub. x Al. sub. 2 O. sub. 3+x (1) with the core of the particle being represented by formula (2), as follows: M. sub. y Al. sub. 2 O. sub. 3+y (2) where in formulas (1) and (2) M is a Group IIA metal, x is a number ranging from about 0. 01 to about 0.

4877550, Oct 31, 1989

Jan 9, 1989

7/294854

Duane A. Goetsch - Baton Rouge LA
Geoffrey R. Say - Baton Rouge LA

Exxon Research and Engineering Company - Florham Park NJ

C01B 330

252373

Light hydrocarbons, e. g. , methane are converted to synthesis gas at elevated temperatures and pressures in the presence of a particulate catalyst, e. g. , Ni/Al. sub. 2 O. sub. 3. The conversion of feed to synthesis gas is preserved by rapidly cooling the reaction production to a temperature below that which favors the back reaction of carbon monoxide and hydrogen to form methane.

5143647, Sep 1, 1992

Jun 7, 1991

7/711697

Geoffrey R. Say - Baton Rouge LA
James H. Taylor - Baton Rouge LA
David C. Long - Baton Rouge LA
Rocco A. Fiato - Basking Ridge NJ

Exxon Research and Engineering Company - Florham Park NJ

C07C 2714

252373

Start-up procedure for FBSG process involving starting up under oxidizing conditions with Al. sub. 2 O. sub. 3 (no Ni) particles in the bed and the switching to reducing conditions prior to adding Ni/Al. sub. 2 O. sub. 3 catalyst. This procedure will prevent catalyst particle agglomeration.

4045371, Aug 30, 1977

Jun 8, 1976

5/693875

Kenneth S. Wheelock - Baton Rouge LA
Geoffrey R. Say - Baton Rouge LA

Exxon Research and Engineering Company - Linden NJ

B01J 2104, B01J 2310

252462

Hydrogen sulfide and its precursors can be selectively sorbed from gas streams containing the same by contacting the gas stream at elevated temperatures with a regenerable sorbent comprising a steam-treated support composited with a rare earth metal component. Presteaming the support lowers the amount of rare earth metal component needed to achieve a given activity level for hydrogen sulfide removal. Subsequent to sorption, the sorbent composite may be desorbed and regenerated by treatment with steam (desorption) and an oxidizing gas (regeneration). The sorbent capacity may be increased by the use of alkali or alkaline earth metal components as promoters. A preferred sorbent comprises lanthanum composited with presteamed alumina.