1
Wolk Ronald H, Nongbri Govanon, Rovesti William C: Multi-zone method for demetallizing and desulfurizing crude oil or atmospheric residual oil. Hydrocarbon Research, August 26, 1975: US3901792 (73 worldwide citation)

The high level desulfurization of petroleum residuums normally having at least 100 ppm of metals from the groups of vanadium and nickel is accomplished by an initial contact stage with a contact material such as Porocel, having extensive macroporosity with more than 0.15 cc/gram pore volume in pores ...


2
Dai Pei Shing Eugene, Nelson Gerald Verdell, Nongbri Govanon, Pratt Ray Earl, Sherwood David Edward Jr: Hydroconversion process.. Texaco Development, October 27, 1993: EP0567272-A1 (30 worldwide citation)

Heavy oils may be hydrotreated in the presence of a porous alumina support bearing metals of Group VIII and VI-B and optionally phosphorus, the catalyst having a Total Surface Area of 165-230 m /g, a Total Pore Volume of 0.5-0.8 cc.g, and a Pore Diameter Distribution whereby less than about 5% of th ...


3
Nongbri Govanon, Alpert Seymour B, Wolk Ronald H: Production of coker feedstocks. Hydrocarbon Research, November 20, 1973: US3773653 (14 worldwide citation)

Coker feedstocks having minimum amounts of sulfur or metals are produced from residuum feeds using an ebullated bed reaction zone. The qualities of the coker feedstocks are controlled through the use of selected operating conditions within the limits of converting 30 to 60 percent of the material in ...


4
Alpert Seymour B, Wolk Ronald H, Chervenak Michael C, Nongbri Govanon: Two-stage hydrodesulfurization of a high metal content hydrocarbon feed. Hydrocarbon Research, April 3, 1973: US3725251 (14 worldwide citation)

A multi-stage process for the hydrodesulfurization of high metals content hydrocarbon feed materials wherein the first reaction zone is an ebullated bed contacting system using a powdered contact agent having particles in the size range from 40 to 325 U. S. mesh whereby superior metals removal is ef ...


5
Nongbri Govanon, Nelson Gerald Verdell, Pratt Roy Earl, Schrader Charles Henry, Livingston William Bethart, Bellinger Michael Peter, Sayles Scott Michael: Two stage catalytic cracking process.. Texaco Development, October 10, 1990: EP0391528-A2 (6 worldwide citation)

A two stage catalytic cracking process wherein a heavy cycle gas oil fraction (HCGO) nominal boiling range 315 DEG C to 565 DEG C (600 DEG F to 1050 DEG F), API gravity of -10 DEG to +10 DEG and 65 to 95 vol% aromatics is recycled to extinction between an ebullated bed hydrocracking zone (50) and a ...


6
Dai Pei Shing, Nelson Gerald Verdell, Nongbri Govanon, Pratt Ray Earl, Sherwood David Edward Jr: Hydroconversion process.. Texaco Development, April 6, 1994: EP0590894-A1 (4 worldwide citation)

Heavy hydrocarbons are hydrotreated to increase content of components boiling below 540 DEG C (1000 DEG F) by contact with Group VIII non-noble metal oxide and Group VI-B metal oxide on alumina having a Total Surface Area of 150-240 m/g, a Total Pore Volume, (TPV) of 0.7-0.98, and a Pore Diameter Di ...


7

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Nongbri Govanon, Brandt Susan M, Chervenak Michael C: Selective operating conditions for high conversion of special petroleum feedstocks. Hydrocarbon Research, May 6, 1983: FR2515681-A1

PROCEDE POUR CONVERTIR PAR HYDROGENATION CATALYTIQUE DES CHARGEMENTS PETROLIERS CONTENANT AU MOINS 8 EN POIDS ENVIRON D'ASPHALTENES AVEC UN RESIDU DE CARBONE RAMSBOTTOM D'AU MOINS 10 EN POIDS ENVIRON EN LIQUIDES DISTILLES A POINT D'EBULLITION PLUS BAS.


9
Mandel Gerald, Nongbri Govanon: Procede catalytique multi-etage pour la conversion dhydrocarbures liquides lourds, Multi-stage catalytic process for high conversion of heavy hydrocarbon liquid feedstocks. Hri, GOWLING LAFLEUR HENDERSON, June 14, 1988: CA1238005

ABSTRACT OF DISCLOSURE A process for high hydroconversion of heavy liquidhydrocarbons, such as petroleum resid feedstocks containingat least about 25 V % material boiling above about 975�F+,using multi-stage catalytic reactions at elevated temperatureand pressure to produce increased yields of lower ...


10
Chervenak Michael C, Nongbri Govanon, Eccles Richard M: Hydro-conversion poussee et continue des charges de residus du petrole, Sustained high hydroconversion of petroleum residua feedstocks. Hri, GOWLING LAFLEUR HENDERSON, June 28, 1988: CA1238599

ABSTRACT OF DISCLOSURE A process for high hydroconversion of petroleum residuacontaining at least about 25 V % material boiling above975�F to produce lower boiling hydrocarbon liquid productsand avoid undesirable precipitation of asphaltene compounds.In the process, the feedstock is at least about 8 ...