Patents by Inventor Amirali G. Rehmat

Amirali G. Rehmat has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9862899
    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.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: January 9, 2018
    Assignee: Simple Approach Systems, Inc.
    Inventor: Amirali G. Rehmat
  • Publication number: 20170275542
    Abstract: An apparatus, system, and method for processing hydrocarbon-containing wastes are described. The system and method include the use of a gasification apparatus comprising a rotary kiln reactor and a gas distributor. The rotary kiln reactor and gas distributor are configured to generate multiple reaction environments within the gasification apparatus. Each of the reaction environments has unique temperature reaction conditions to suit various physical and chemical properties associated with processing of the varied-source hydrocarbon-containing wastes.
    Type: Application
    Filed: August 21, 2015
    Publication date: September 28, 2017
    Inventor: Amirali G Rehmat
  • Publication number: 20170137728
    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.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Inventor: Amirali G. Rehmat
  • Patent number: 9557058
    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.
    Type: Grant
    Filed: January 3, 2013
    Date of Patent: January 31, 2017
    Assignee: Simple Approach Systems, Inc.
    Inventor: Amirali G. Rehmat
  • Patent number: 9434895
    Abstract: The present application discloses a common purpose apparatus for carrying out physical and chemical reactions of carbonaceous materials with oxygen bearing gases and preheated gases that is used for carrying out thermo chemical transformation of carbonaceous materials into gaseous and liquid fuels, and for combusting carbonaceous fuels and to recover energy there from, and for remediating hydrocarbon-contaminated materials, and further for producing bio-chars from biomass.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: September 6, 2016
    Assignee: SIMPLE APPROACH SYSTEMS, INC.
    Inventor: Amirali G. Rehmat
  • Publication number: 20160251584
    Abstract: The present application discloses a common purpose apparatus for carrying out physical and chemical reactions of carbonaceous materials with oxygen bearing gases and preheated gases that is used for carrying out thermo chemical transformation of carbonaceous materials into gaseous and liquid fuels, and for combusting carbonaceous fuels and to recover energy there from, and for remediating hydrocarbon-contaminated materials, and further for producing bio-chars from biomass.
    Type: Application
    Filed: February 26, 2015
    Publication date: September 1, 2016
    Inventor: Amirali G Rehmat
  • Publication number: 20130119315
    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.
    Type: Application
    Filed: January 3, 2013
    Publication date: May 16, 2013
    Inventor: Amirali G. Rehmat
  • Patent number: 7819070
    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.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: October 26, 2010
    Assignee: JC Enviro Enterprises Corp.
    Inventors: Amirali G Rehmat, Richard L Kao, Jin Soo Chung
  • Patent number: 6410283
    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.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: June 25, 2002
    Assignee: Endesco Clean Harbors, L.L.C.
    Inventors: Amirali G. Rehmat, Anthony L. Lee, Michael C. Mensinger, Anil Goyal, S. Peter Barone
  • Patent number: 6312499
    Abstract: A method for stabilization of liquid mercury in which powdered copper particles are cleaned with a chemically reactive fluid suitable for removing surface oxidation from the surface. “Clean” powdered copper particles are mixed with liquid mercury to form a powdered copper/liquid mercury mixture. The mixture is then hardened to form an amalgam. Amalgams in which the amount of mercury is greater than 50% by weight of the total amalgam may be produced in accordance with the method of this invention.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: November 6, 2001
    Assignee: Institute of Gas Technology
    Inventors: Amirali G. Rehmat, Anil Goyal, Douglas H. Laird
  • Patent number: 5958360
    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.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: September 28, 1999
    Assignee: Gas Research Institute
    Inventors: Amirali G. Rehmat, Michael C. Mensinger, Dennis Leppin
  • Patent number: 5876677
    Abstract: A method and apparatus for removing sulfur from gas streams, utilizing liquid redox, including an improved method for preventing build-up of elemental sulfur in a sulfur absorber. Ultrasonic irradiation of one or more portions of the structure of the absorber prevents sulfur build-up. In combination with monitoring of the pressure across the absorber, the freeing of sulfur from surfaces in an absorber can be automatically actuated.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: March 2, 1999
    Inventors: Michael C. Mensinger, Amirali G. Rehmat, Dennis Leppin
  • Patent number: 5866089
    Abstract: A method and apparatus for removing sulfur from gas streams, utilizing liquid redox, including an improved method for preventing build-up of elemental sulfur in a sulfur absorber. Ultrasonic irradiation of one or more portions of the structure of the absorber prevents sulfur build-up. In combination with monitoring of the pressure across the absorber, the freeing of sulfur from surfaces in an absorber can be automatically actuated.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: February 2, 1999
    Assignee: Gas Research Institute
    Inventors: Michael C. Mensinger, Amirali G. Rehmat, Dennis Leppin
  • Patent number: 5855666
    Abstract: This invention relates to thermo-chemical remediation and decontamination of sediments and soils contaminated with organic contaminants as well as inorganic materials with subsequent beneficial reuse. Novel environmentally stable products of commercial value are produced when certain additives such as calcium and metal oxides are mixed with the contaminated materials. In the process, the mixture is heated to 1150.degree. C..about.1500.degree. C. to produce a molten reaction product with at least part of an excess amount of oxygen mixture or air is continuously bubbled through the melt in order to provide mixing and achieve high thermal destruction and removal efficiencies of the organic contaminants. The melt is then quickly quenched in moist air, steam, or water to avoid the transformation of the amorphous material into crystals. The inorganic contaminants such as chromium, nickel, zinc, etc. are incorporated and completely immobilized within the amorphous silicate network.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: January 5, 1999
    Assignee: Cement-Lock Group, L.L.C.
    Inventors: Richard L. Kao, Sarabjit S. Randhava, Surjit S. Randhava, Michael C. Mensinger, Amirali G. Rehmat, Anthony L. Lee
  • Patent number: 5843382
    Abstract: An apparatus and process for the removal of sulfur, in the form of hydrogen sulfide, from gas, such as natural gas or industrial gas streams, in which the sulfur is removed and separated in the form of molten elemental sulfur.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: December 1, 1998
    Assignee: Gas Research Institute
    Inventor: Amirali G. Rehmat
  • Patent number: 5803894
    Abstract: This invention relates to thermo-chemical remediation and decontamination of sediments and soils contaminated with organic contaminants as well as inorganic materials with subsequent beneficial reuse. Novel environmentally stable products of commercial value are produced when certain additives such as calcium and metal oxides are mixed with the contaminated materials. In the process, the mixture is heated to 1150.degree. C..about.1500.degree. C. to produce a molten reaction product with at least part of an excess amount of oxygen mixture or air is continuously bubbled through the melt in order to provide mixing and achieve high thermal destruction and removal efficiencies of the organic contaminants. The melt is then quickly quenched in moist air, steam, or water to avoid the transformation of the amorphous material into crystals. The inorganic contaminants such as chromium, nickel, zinc, etc. are incorporated and completely immobilized within the amorphous silicate network.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: September 8, 1998
    Assignee: Cement-Lock L.L.C.
    Inventors: Richard L. Kao, Sarabjit S. Randhava, Surjit S. Randhava, Michael C. Mensinger, Amirali G. Rehmat, Anthony L. Lee
  • Patent number: 5753189
    Abstract: An apparatus and process for the removal of sulfur, in the form of hydrogen sulfide (H.sub.2 S), from gas, such as natural gas or industrial gas streams, in which the sulfur is removed and separated in the form of particulate elemental sulfur. The apparatus and process are advantageously configured so as to maintain control over the development of undesired concentrations of particulate sulfur in the precipitation catalyst solution with which the sulfur is separated from the gas stream.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: May 19, 1998
    Assignee: Gas Research Institute
    Inventor: Amirali G. Rehmat
  • Patent number: 5243922
    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.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: September 14, 1993
    Assignee: Institute of Gas Technology
    Inventors: Amirali G. Rehmat, Lev Dorfman
  • Patent number: 5163374
    Abstract: A process for combustion of hydrocarbonaceous materials containing high levels of sulfur, fuel-bound nitrogen and low levels of ash which inhibits the emissions of oxides of nitrogen and sulfur, reduces solid waste disposal, and produces useable by-products. In the first step of the process, the hydrocarbonaceous material is burned in a fluidized bed into which a calcium based sorbent is introduced, producing a mixture of gaseous products of combustion and particulate matter, ash and calcium containing solids. In a second step of the process, the mixture of gaseous products of combustion and particulate matter is completely burned in a cyclonic combustion reactor. In a third step of the process, the ash and calcium-containing solids generated in the fluidized bed are withdrawn from the fluidized bed, cooled and contacted with steam in a regenerator producing calcium hydroxide, ash and unspent sorbent which are recycled to the fluidized bed.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: November 17, 1992
    Assignee: Institute of Gas Technology
    Inventors: Amirali G. Rehmat, Mark J. Khinkis
  • Patent number: 5158449
    Abstract: A process and apparatus for thermal agglomeration of high melting temperature ashes in fluidized bed processes is disclosed. Carbonaceous material to be combusted, incinerated or gasified is introduced into a fluidized bed supported on a perforated sloping supported grid through which a fluidizing gas is injected. An upflowing discharge control gas is injected through a density/size solids withdrawal conduit in communication with the base of the perforated sloping support grid. Positioned within the solids withdrawal conduit is a central jet pipe through which fuel and oxidant are injected into the base of the fluidized bed forming a hot temperature zone in which ash melts and agglomerates. Positioned above the perforated sloping support grid and peripherally mounted through the reactor wall are one or more burners through which fuel and oxidant are injected into the fluidized bed forming supplemental hot temperature zones in which ash melts and agglomerates.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: October 27, 1992
    Assignee: Institute of Gas Technology
    Inventors: Bruce G. Bryan, Mark J. Khinkis, Amirali G. Rehmat