1
Thomas P Hickey, Dennis Hearn, Hugh M Putman: Hydroconversion process. Catalytic Distillation Technologies, Kenneth H Johnson, October 5, 1999: US05961815 (48 worldwide citation)

The hydroconversion of heavy petroliferous stocks boiling mainly above 400.degree. F. is carried out in a distillation column reactor where concurrently a petroleum stream is fed into a feed zone; hydrogen is fed at a point below said feed zone; the petroleum stream is distilled and contacted in the ...


2
Gary R Gildert, Hugh M Putman, Dennis Hearn: Process for concurrent selective hydrogenation of acetylenes and 1,2 butadine in hydrocarbon streams. Catalytic Distillation Technologies, Kenneth H Johnson, March 2, 1999: US05877363 (39 worldwide citation)

A process for the removal of vinylacetylene, ethylacetylene and 1,2-butadiene from C.sub.4 aliphatic hydrocarbon streams comprising, concurrently: (1) feeding hydrogen and a hydrocarbon stream comprising C.sub.4 hydrocarbons including butanes, butenes, butadienes and vinylacetylene to a distillation ...


3
Dennis Hearn, Gary R Gildert, Hugh M Putman: Process for selective hydrogenation of highly unsaturated compounds and isomerization of olefins in hydrocarbon streams. Chemical Research & Licensing Company, Kenneth H Johnson, January 21, 1997: US05595634 (38 worldwide citation)

A process for treating C.sub.3 to C.sub.12 petroleum fractions, such as a light cracked naphtha to be used as an etherification feed stock in which H.sub.2 S is removed by distillation of at least the C.sub.3 fraction and mercaptans and diolefins are removed simultaneously in a distillation column r ...


4
Gary R Gildert, Willibrord A Groten, Hugh M Putman: Process for the simultaneous treatment and fractionation of light naphtha hydrocarbon streams. Catalytic Distillation Technologies, Kenneth H Johnson, July 4, 2000: US06083378 (35 worldwide citation)

A process for concurrently fractionating and hydrotreating of a full range naphtha stream. The full boiling range naphtha stream is subjected to simultaneous hydrodesulfurization and splitting into a light boiling range naphtha and a heavy boiling range naphtha. The two boiling range naphthas are tr ...


5
Dennis Hearn, Hugh M Putman: Hydrodesulfurization process utilizing a distillation column realtor. Catalytic Distillation Technologies, Kenneth H Johnson, July 14, 1998: US05779883 (23 worldwide citation)

A process for the hydrodesulfurization of petroleum streams is disclosed wherein the sulfur containing petroleum stream is contacted along with hydrogen at a partial pressure of less than 70 psig in a distillation column reactor containing a hydrodesulfurization catalyst in the form of a catalytic d ...


6
Gary R Gildert, Dennis Hearn, Hugh M Putman: Hydrogenation of unsaturated cyclic compounds. Kenneth H Johnson, June 30, 1998: US05773670 (20 worldwide citation)

A process for the hydrogenation of unsaturated cyclic and polycyclic compounds to saturates is provided wherein the reactor is operated at a pressure wherein the reaction mixture is boiling under low hydrogen partial pressure in the range of about 0.1 psi to less than 70 psia at 0 to 350 psig. The c ...


7
Hugh M Putman, John R Adams: Process and catalyst for selective hydrogenation of dienes and acetylenes. Catalytic Distillation Technologies, Osha • Liang, July 24, 2012: US08227650 (19 worldwide citation)

A process for the selective hydrogenation of dienes and acetylenes in a mixed hydrocarbon stream from a pyrolysis steam cracker in which a front end a one step acetylene hydrogenation is carried out using catalyst comprising (A) 1 to 30 wt. % based on the total weight of the catalyst of a catalytic ...


8
Hugh M Putman: Process for the removal of mercaptans. Catalytic Distillation Technologies, Kenneth H Johnson, May 15, 2001: US06231752 (11 worldwide citation)

A process for treating a full boiling range naphtha is disclosed in which the mercaptans and diolefins are removed simultaneously in a debutanizer distillation column reactor. The mercaptans are reacted with the diolefins to form sulfides which are higher boiling than the C


9
Gary R Gildert, Hugh M Putman, Dennis Hearn: Selective hydrogenation of aromatics contained in hydrocarbon streams. Catalytic Distillation Technologies, Kenneth H Johnson, January 5, 1999: US05856602 (10 worldwide citation)

A process for the hydrogenation of a selected aromatic, such as benzene contained in a naphtha stream to cyclohexane wherein the distillation column reactor is operated such that the portion of the naphtha containing the benzene is maintained in the catalyst bed such that essentially only benzene is ...


10
Dennis Hearn, Gary R Gildert, Hugh M Putman: Process for removal of mercaptans from hydrocarbon streams. Catalytic Distillation Technologies, Kenneth H Johnson, August 27, 2002: US06440299 (10 worldwide citation)

A process for treating a light cracked naphtha to be used as an etherification feed stock is disclosed in which mercaptans, H