Amirali G Rehmat

US Patent:

6410283, Jun 25, 2002

Filed:

Jun 7, 2001

Appl. No.:

09/876325

Inventors:

Amirali G. Rehmat - Darien IL
Anthony L. Lee - Glen Ellyn IL
Michael C. Mensinger - Darien IL
Anil Goyal - Willowbrook IL
S. Peter Barone - Bartlett IL

Assignee:

Endesco Clean Harbors, L.L.C. - Des Plaines IL

International Classification:

C12P 502

US Classification:

435167, 48197 A, 210603, 210605, 210609

Abstract:

A method for generating electricity in which sludge is anaerobically digested to form a gas mixture of methane and carbon dioxide and a residue of digested sludge. Water is removed from the digested sludge to form dewatered sludge, which, in turn, is gasified to form a gaseous composition which includes carbon monoxide and hydrogen. The gas mixture containing methane and carbon dioxide produced in the anaerobic digestion step is mixed with the gas mixture containing hydrogen and carbon monoxide from the gasification step and burned in an apparatus, such as a micro-turbine, for generating electricity. The non-carbonaceous fraction of the sludge is melted during the gasification step and rendered environmentally benign.

US Patent:

7819070, Oct 26, 2010

Filed:

Jul 15, 2005

Appl. No.:

11/160940

Inventors:

Amirali G Rehmat - Darien IL, US
Richard L Kao - Northbrook IL, US
Jin Soo Chung - Hacienda Heights CA, US

Assignee:

JC Enviro Enterprises Corp. - Hacienda Heights CA

International Classification:

F23G 5/12

US Classification:

110229, 110315

Abstract:

The present application discloses an apparatus for gasification of solid, liquid and gaseous organic feed materials having a fuel value into synthesis gas. The apparatus comprises: a gasification reactor vessel having a tapered interior with a minimum of four zones for introducing reaction gas mixtures, a central perforated diffuser pipe, a solid and liquid material inlet at the upper end of the uppermost zone, a solid and gas discharge outlet at the lower end of the bottom zone, wherein the reactor vessel defining a sequence of reaction zones from the material inlet to the material outlet including drying, pyrolysis, combustion and gasification zones, and confining downwardly moving the column of the feed materials within the zones, gas feed inlet pipes for introducing reaction gas into the zones, a synthesis gas discharge pipe below the zones, and a heat exchanger below the zones.

US Patent:

20090277090, Nov 12, 2009

Filed:

May 11, 2009

Appl. No.:

12/463848

Inventors:

Amirali Gulamhussein REHMAT - Darien IL, US
Renee Lyn COMLY - Lambertville NJ, US
Amjad Abdulali KADWANI - Chicago IL, US
Alex MATHEW - Palatine IL, US
George MATHEW - Cochin, IN

International Classification:

C10J 3/72
C07C 1/00
C10L 5/00

US Classification:

48113, 252373, 44605

Abstract:

A port assembly for controlling the delivery of gases into the horizontal rotating reactor such as kiln gasifier is disclosed for introducing reactant gases. The port assembly comprises a cylindrical conduit is divided into noncommunicating four or more sections extending through the entire length of the kiln and supported by the stationary end plates of the rotating kiln gasifier. Each section of the conduit communicates with external supply of the reactant gases and each supply of reactant gases is independently controlled in terms of the composition and quantity. Each section of the port assembly communicates with the interior of the kiln gasifier through the plurality of nozzles are confined in the lower part of the conduit. The number and the size of the nozzles in individual section of the conduit is based on the desired flow of gases and available pressure for the supply of the reactant gases.

US Patent:

20110116984, May 19, 2011

Filed:

Jun 4, 2009

Appl. No.:

12/478585

Inventors:

Amirali Gulamhussein REHMAT - Darien IL, US
Renee Lyn COMLY - Lambertville NJ, US
Amjad Abdulali KADWANI - Chicago IL, US
Alex MATHEW - Palatine IL, US
George MATHEW - Cochin, IN

International Classification:

B09B 3/00

US Classification:

4221841

Abstract:

A rotating air distributor for rotary reactors such as rotary kilns for the gasification of biomass and other carbonaceous materials for efficient mixing and maximum conversion of solid biomass and other carbonaceous materials into synthesis fuel gas is disclosed. The invention includes a gas distribution port comprises of one main supply from which several discharge nozzles emerge at different angles and at different locations along the length of the reactor to provide distribution of gas throughout the intended length of the reactor. The discharge of gas from the gas distribution port is adjusted by the variable position of a plug inside the port that can be adjusted during the operation of the kiln to achieve optimum gas-solid interaction along the length of the reactor. The rotating action of the gas distribution port also facilitates and eases the passage of reacted biomass solid and other carbonaceous material residue through the reactor.

US Patent:

20130119315, May 16, 2013

Filed:

Jan 3, 2013

Appl. No.:

13/733492

Inventors:

Amirali G. Rehmat - Darien IL, US

International Classification:

F23L 7/00

US Classification:

252373, 4221841, 137561 A

Abstract:

A rotating air distributor for rotary reactors such as rotary kilns for the gasification of biomass and other carbonaceous materials for efficient mixing and maximum conversion of solid biomass and other carbonaceous materials into synthesis fuel gas is disclosed. The invention includes a gas distribution port comprises of one main supply from which several discharge nozzles emerge at different angles and at different locations along the length of the reactor to provide distribution of gas throughout the intended length of the reactor. The discharge of gas from the gas distribution port is adjusted by the variable position of a plug inside the port that can be adjusted during the operation of the kiln to achieve optimum gas-solid interaction along the length of the reactor. The rotating action of the gas distribution port also facilitates and eases the passage of reacted biomass solid and other carbonaceous material residue through the reactor.

US Patent:

52439224, Sep 14, 1993

Filed:

Jul 31, 1992

Appl. No.:

7/923316

Inventors:

Amirali G. Rehmat - Darien IL
Lev Dorfman - Skokie IL

Assignee:

Institute of Gas Technology - Chicago IL

International Classification:

F23B 700

US Classification:

110233

Abstract:

A process and apparatus for generating electricity from coal comprising a vertically stacked, three-stage combustor in which a sorbent is calcined in a calciner zone of the combustor and transferred to a carbonizer zone disposed below the calciner zone, coal introduced into the carbonizer zone is carbonized, producing char and spent sorbent, both of which are transferred to a combustor zone disposed below the carbonizer zone, in which the char is combusted at a substoichemetic air-to-coal ratio, producing a fuel gas. The fuel gas is cleaned and combusted in a turbine combustor, producing a flue gas which is introduced into a gas turbine for producing electricity.

US Patent:

59583606, Sep 28, 1999

Filed:

Feb 6, 1998

Appl. No.:

9/019957

Inventors:

Amirali G. Rehmat - Darien IL
Michael C. Mensinger - Darien IL
Dennis Leppin - Chicago IL

Assignee:

Gas Research Institute - Chicago IL

International Classification:

C01B 1705

US Classification:

4235731

Abstract:

A method and apparatus for contacting a gas and a liquid such as may be utilized in removing sulfur from gas streams, using a liquid redox process, are provided, which prevent or avoid buildup of elemental sulfur in the process equipment by introducing the hydrogen sulfide contaminated gas through a plurality of gas inlets tangentially distributed within the inner wall of the reaction vessel containing a liquid redox scrubbing solution.

US Patent:

45443750, Oct 1, 1985

Filed:

Nov 25, 1983

Appl. No.:

6/555047

Inventors:

Amirali G. Rehmat - Westmont IL
Jitendra G. Patel - Bolingbrook IL

Assignee:

Institute of Gas Technology - Chicago IL

International Classification:

C10J 354

US Classification:

48197R

Abstract:

An apparatus and process for control and maintenance of fluidized beds under non-steady state conditions. An ash removal conduit is provided for removing solid particulates from a fluidized bed separate from an ash discharge conduit in the lower portion of the grate supporting such a bed. The apparatus and process of this invention is particularly suitable for use in ash agglomerating fluidized beds and provides control of the fluidized bed before ash agglomeration is initiated and during upset conditions resulting in stable, sinter-free fluidized bed maintenance.