Robert Michael Leonard

US Patent:

40909573, May 23, 1978

Filed:

Jun 1, 1976

Appl. No.:

5/691578

Inventors:

Robert E. Leonard - Oklahoma City OK

Assignee:

Kerr-McGee Corporation - Oklahoma City OK

International Classification:

B01D 2100

US Classification:

210 54

Abstract:

An improved coal processing system wherein relatively small droplets of a feed mixture (including both soluble and insoluble coal products) are dispersed in a first separation zone and contacted, countercurrently with a dissolving solvent to form a heavy fraction containing the insoluble coal products and a separate light fraction containing the soluble coal products.

US Patent:

53002733, Apr 5, 1994

Filed:

Dec 3, 1992

Appl. No.:

7/985526

Inventors:

Robert E. Leonard - Oklahoma City OK

Assignee:

Kerr-McGee Chemical Corporation - Oklahoma City OK

International Classification:

C01G 2302
C01F 748

US Classification:

423492

Abstract:

An improved process is provided for producing titanium tetrachloride vapor admixed with a desired particular amount of aluminum trichloride vapor for use in the production of rutile titanium dioxide. The vapor mixture is derived from a titanium tetrachloride solution containing the desired particular amount of aluminum trichloride. The solution is produced continuously by dissolving aluminum trichloride in a heated stream of liquid titanium tetrachloride utilizing a cyclic aluminum trichloride bed switching and recharging process.

US Patent:

50037749, Apr 2, 1991

Filed:

Oct 27, 1989

Appl. No.:

7/427799

Inventors:

Robert E. Leonard - Oklahoma City OK

Assignee:

Kerr-McGee Chemical Corporation - Oklahoma City OK

International Classification:

F01N 302

US Classification:

60275

Abstract:

An apparatus for removing soot from an exhaust gas stream wherein the exhaust gas stream is contacted with water to provide a substantially water saturated exhaust gas stream, particles and droplets in the water saturated gas stream then are electrically charged to produce a gas stream containing electrically charged particles and droplets, and an electric field is established for electrostatically attracting and de-entraining soot and soot containing water droplets from the gas stream containing electrically charged particles and droplets to provide a substantially soot free exhaust gas stream. The present invention includes a precipitator wherein the insulators are positioned in low dew point relatively clean locations and, in one embodiment, includes the use of the exhaust gas stream to maintain the temperature level of the insulators above dew point. In one other embodiment, the condensate produced as a result of electrostatically attracting and de-entraining soot and soot containing water droplets from the exhaust gas stream containing electrically charged particles and droplets is recirculated and used as part of the water for contacting the exhaust gas stream.

US Patent:

41629574, Jul 31, 1979

Filed:

Mar 20, 1978

Appl. No.:

5/888283

Inventors:

Robert E. Leonard - Oklahoma City OK

Assignee:

Kerr-McGee Corporation - Oklahoma City OK

International Classification:

C10G 100

US Classification:

208 8R

Abstract:

The present invention relates to a process wherein solidified coal liquefaction products with or without other solid materials can be simultaneously melted and introduced at an elevated pressure into a process unit. The melting and introduction of the coal liquefaction products with or without other solid materials into the process unit is accomplished by an extruder.

US Patent:

41535383, May 8, 1979

Filed:

Mar 20, 1978

Appl. No.:

5/888299

Inventors:

Robert E. Leonard - Oklahoma City OK
Donald E. Rhodes - Oklahoma City OK

Assignee:

Kerr-McGee Corporation - Oklahoma City OK

International Classification:

C10G 2114

US Classification:

208177

Abstract:

A process for maintaining the fluid-like properties of a heavy phase being withdrawn from a separation zone maintained at elevated temperature and pressure during periods in which the flow of this heavy phase is terminated due to pressure reduction valve plugging or to permit cleaning of downstream processing apparatus. When the flow of withdrawn heavy phase is interrupted, deashed coal is melted, if necessary, and introduced under pressure into the withdrawal conduit to mix with the heavy phase therein. The mixture of deashed coal and heavy phase retains the fluid-like properties exhibited by the heavy phase and flow can be resumed once the downstream apparatus is repaired. Alternatively, other high-boiling aromatic materials may be used instead of the deashed coal.

US Patent:

40702677, Jan 24, 1978

Filed:

Jun 1, 1976

Appl. No.:

5/691576

Inventors:

Robert E. Leonard - Oklahoma City OK

Assignee:

Kerr-McGee Corporation - Oklahoma City OK

International Classification:

C10G 104

US Classification:

208 8

Abstract:

An improved system for processing coal wherein a feed mixture (comprising a dissolving solvent, insoluble coal products and soluble coal products) is separated in a first separation zone, provided with a coalescing section, into a first heavy fraction and a first light fraction (comprising soluble coal products, the dissolving solvent and some insoluble coal products), and a portion of the insoluble coal products is separated from the first light fraction by contacting at least the first light fraction with the coalescing section. Such contacting reduces the amount of insoluble coal products in the first light fraction withdrawn from the first separation zone.

US Patent:

42908809, Sep 22, 1981

Filed:

Jun 30, 1980

Appl. No.:

6/164599

Inventors:

Robert E. Leonard - Oklahoma City OK

Assignee:

Kerr-McGee Refining Corporation - Oklahoma City OK

International Classification:

C10G 2100

US Classification:

208309

Abstract:

A process for effecting a deep cut in a heavy hydrocarbon material without a decrease in the quality of the extracted oil caused by the presence of undesirable entrained resinous bodies and organometallic compounds. The heavy hydrocarbon material is contacted with a solvent in a first separation zone maintained at an elevated temperature and pressure to effect a separation of the feed into a first light phase and a first heavy phase comprising asphaltenes and some solvent. The first light phase is introduced into a second separation zone maintained at an elevated temperature and pressure to effect a separation of the first light phase into a second light phase comprising oils and solvent and a second heavy phase comprising resins and some solvent. A portion of the second heavy phase is withdrawn and introduced into an upper portion of the second separation zone to countercurrently contact the second light phase. The contacting removes at least a portion of any entrained resinous bodies and organometallic compounds from the oils contained in the second light phase.

US Patent:

42499518, Feb 10, 1981

Filed:

Sep 7, 1979

Appl. No.:

6/073469

Inventors:

Robert E. Leonard - Oklahoma City OK

Assignee:

Kerr-McGee Corporation - Oklahoma City OK

International Classification:

C04B 736

US Classification:

106103

Abstract:

A process for utilizing mineral-containing residue from coal liquefaction processes to produce a hydraulic cement. The residue is mixed with siliceous and calcareous matereals and compacted. The compacted solids are introduced into a kiln and fired to produce hydraulic cement clinker. The primary fuel for the clinker production is contained in the residue. The clinker is removed from the kiln and ground to produce cement.