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Lavanga Veluswamy Phones & Addresses

  • Houston, TX

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Lavanga Veluswamy

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Business Records

Name / Title
Company / Classification
Phones & Addresses
Lavanga Veluswamy
MM
MILLENIUM SERVICE INDUSTRIES L L C
PO Box 2877, Sugar Land, TX 77487
911 Federal Rd SUITE Z-C, Houston, TX 77015
Lavanga Veluswamy
MM
Millenium Service Industries, LLC
109 N Richey St, Pasadena, TX 77506

Publications

Us Patents

Liquefaction Process

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US Patent:
44850085, Nov 27, 1984
Filed:
Apr 7, 1983
Appl. No.:
6/483076
Inventors:
Peter S. Maa - Baytown TX
Lavanga R. Veluswamy - Houston TX
Lonnie W. Vernon - Baytown TX
Assignee:
Exxon Research and Engineering Co. - Florham Park NJ
International Classification:
C10G 100
C10G 106
C10G 108
US Classification:
208 10
Abstract:
An improved liquefaction process for solid carbonaceous materials wherein at least a portion of the liquefaction is accomplished in the presence of an added hydrogenation catalyst and a solvent containing at least 1. 25 wt % donatable hydrogen and in the presence of partially liquefied, solid carbonaceous material at liquefaction conditions. In a preferred embodiment, the liquefaction is accomplished in a plurality of stages and a solvent containing at least 1. 25 wt % donatable hydrogen is used in at least one stage, most preferably in the second stage. The partially liquefied solid carbonaceous material may be taken from the bottoms fraction of the effluent from any of the liquefaction stages.

Staged Temperature Coal Conversion Process

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US Patent:
43138160, Feb 2, 1982
Filed:
Aug 25, 1980
Appl. No.:
6/180543
Inventors:
Lavanga R. Veluswamy - Houston TX
Peter S. Maa - Baytown TX
Assignee:
Exxon Research & Engineering Co. - Florham Park NJ
International Classification:
C10G 100
C10G 106
US Classification:
208 10
Abstract:
Coal or similar liquefiable carbonaceous solids are converted into lower molecular weight liquids by contacting the feed solids with molecular hydrogen in the absence of externally added hydrocarbon liquids under liquefaction conditions during sequential residence in two or more liquefaction zones arranged in series and operated such that the temperature in each zone increases from the first to the final zone. The effluent from each liquefaction zone is passed to the next succeeding higher temperature zone in the series. No hydrocarbon liquids are added to the first zone in the series and the only liquids present in each succeeding zone of the series are the liquids in the effluent from the preceding zone. Liquid hydrocarbonaceous products are recovered from the effluent withdrawn from the last zone.

Coal Conversion In The Presence Of Added Alkali Metal Compounds

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US Patent:
43381847, Jul 6, 1982
Filed:
Oct 27, 1980
Appl. No.:
6/200710
Inventors:
Peter S. Maa - Baytown TX
Lavanga R. Veluswamy - Houston TX
Charles J. Vadovic - Houston TX
Assignee:
Exxon Research & Engineering Co. - Florham Park NJ
International Classification:
C10G 100
C10G 106
B01J 3700
US Classification:
208 10
Abstract:
Coal or similar liquefiable carbonaceous solids are converted into hydrocarbon liquids by contacting the feed solids with molecular hydrogen in the absence of an added hydrocarbon solvent and in the presence of an added alkali metal compound under liquefaction conditions in one or more liquefaction zones.

Recovery Of Coal Liquefaction Catalysts

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US Patent:
44179723, Nov 29, 1983
Filed:
Nov 4, 1981
Appl. No.:
6/318171
Inventors:
James N. Francis - Houston TX
Lavanga R. Veluswamy - Houston TX
Assignee:
Exxon Research and Engineering Co. - Florham Park NJ
International Classification:
C10G 108
C10G 3714
C10G 3100
B01J 3700
US Classification:
208 10
Abstract:
Metal constituents are recovered from the heavy bottoms produced during the liquefaction of coal and similar carbonaceous solids in the presence of a catalyst containing a metal capable of forming an acidic oxide by burning the heavy bottoms in a combustion zone at a temperature below the fusion temperature of the ash to convert insoluble metal-containing catalyst residues in the bottoms into soluble metal-containing oxides; contacting the oxidized solids formed in the combustion zone with an aqueous solution of a basic alkali metal salt to extract the soluble metal-containing oxides in the form of soluble alkali metal salts of the metal-containing oxides and recycling the soluble alkali metal salts to the liquefaction zone. In a preferred embodiment of the invention, the bottoms are subjected to partial oxidation, pyrolysis, coking, gasification, extraction or a similar treatment process to recover hydrocarbon liquids and/or gases prior to the burning or combustion step.

Coal Conversion In The Presence Of Added Hydrogen Sulfide

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US Patent:
43222838, Mar 30, 1982
Filed:
Sep 4, 1980
Appl. No.:
6/183862
Inventors:
Peter S. Maa - Baytown TX
Lavanga R. Veluswamy - Houston TX
Assignee:
Exxon Research & Engineering Co. - Florham Park NJ
International Classification:
C10G 106
US Classification:
208 8R
Abstract:
Coal or similar liquefiable carbonaceous solids are converted into lower molecular weight liquids by contacting the feed solids with molecular hydrogen in the absence of externally added hydrocarbon liquids and in the presence of added hydrogen sulfide under liquefaction conditions in one or more liquefaction zones.

Catalytic Hydrogen-Donor Liquefaction Process

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US Patent:
43459897, Aug 24, 1982
Filed:
Aug 27, 1980
Appl. No.:
6/181602
Inventors:
Lonnie W. Vernon - Baytown TX
Lavanga R. Veluswamy - Houston TX
Charles A. Euker - Houston TX
Charles A. Mims - Summit NJ
Assignee:
Exxon Research & Engineering Co. - Florham Park NJ
International Classification:
C10G 106
B01J 3700
US Classification:
208 10
Abstract:
Coal or a similar solid carbonaceous feed material is converted into lower molecular weight liquid hydrocarbons by contacting the feed material with a hydrogen-donor solvent containing above about 0. 6 weight percent donatable hydrogen and molecular hydrogen in a liquefaction zone or a series of two or more liquefaction zones under liquefaction conditions in the presence of an added carbon-alkali metal catalyst comprising a carbon-alkali metal reaction product prepared by heating an intimate mixture of carbonaceous solids and an alkali metal constituent to a temperature above about 800. degree. F. in a reaction zone external to the liquefaction zone.
Lavanga R Veluswamy from Houston, TX Get Report