Patents by Inventor Earl T. Robinson

Earl T. Robinson 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: 10435637
    Abstract: The present invention relates generally to processes for hydromethanating a carbonaceous feedstock in a hydromethanation reactor to a methane-enriched raw product stream, and more specifically to processing of solid char by-product removed from the hydromethanation reactor to improve the carbon utilization and thermal efficiency and economics of the overall process by co-producing electric power and steam from the by-product char in addition to the end-product pipeline quality substitute natural gas.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 8, 2019
    Assignee: GreatPoint Energy, Inc.
    Inventors: Avinash Sirdeshpande, Earl T. Robinson, Pattabhi K. Raman, Kenneth Keckler
  • Patent number: 10344231
    Abstract: The present invention relates generally to processes for hydromethanating a carbonaceous feedstock in a hydromethanation reactor to a methane-enriched raw product stream, and more specifically to processing of solid char by-product removed from the hydromethanation reactor to improve the carbon utilization and thermal efficiency of the overall process and thereby lower the net costs of the end-product pipeline quality substitute natural gas.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: July 9, 2019
    Assignee: GreatPoint Energy, Inc.
    Inventors: Earl T. Robinson, Avinash Sirdeshpande, Pattabhi K. Raman, Kenneth Keckler
  • Patent number: 9353322
    Abstract: The present invention relates to processes for hydromethanating a carbonaceous feedstock to a methane-enriched synthesis gas, where an oxygen-rich gas stream and the carbonaceous feedstock are fed into a fluidized-bed hydromethanation reactor at a specified zone in order to assist in heat management within the hydromethanation reactor.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: May 31, 2016
    Assignee: GreatPoint Energy, Inc.
    Inventors: Pattabhi K. Raman, Veeraya Jiradilok, Earl T. Robinson, Avinash Sirdeshpande
  • Patent number: 9328920
    Abstract: The present invention relates generally to processes for preparing an inorganic sodium and/or chlorine contaminated low-rank coal feedstock for combustion in a fluidized fuel combustor to generate steam and, desirably, co-generate electricity.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 3, 2016
    Assignee: GreatPoint Energy, Inc.
    Inventors: Avinash Sirdeshpande, Kenneth P. Keckler, Earl T. Robinson, Pattabhi K. Raman
  • Patent number: 9273260
    Abstract: The present invention relates generally to processes for preparing agglomerated particulate low-rank coal feedstocks of a particle size suitable for reaction in a fluidized-bed reactor and certain other gasification reactors and, in particular, for coal gasification and combustion applications. The present invention also relates to an integrated coal hydromethanation process including preparing and utilizing such agglomerated particulate low-rank coal feedstocks.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: March 1, 2016
    Assignee: GreatPoint Energy, Inc.
    Inventors: Earl T. Robinson, Kenneth P. Keckler, Pattabhi K. Raman, Avinash Sirdeshpande
  • Patent number: 9234149
    Abstract: Steam generating gasification reactors for providing high-pressure and high-temperature steam for catalytic gasification of a carbonaceous feedstock can be based on oxygen blown gasification reactors adapted for processing a slurry feedstock comprising at least 40% water. The exhaust from the slurry gasifier comprises at least steam, carbon monoxide and hydrogen. The slurry composition and the oxygen to fuel ratio can be varied to control the ratio of carbonaceous gases in the generator exhaust. By directing substantially all of exhaust gases produced from the slurry gasification reactor through the catalytic gasifier and subsequent gas separation and sequestration processes, a greatly higher energy efficiency and decreased carbon footprint can be realized. The subsequent gas separation process produces a syngas stream which is recycled and directed into the slurry gasifier.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: January 12, 2016
    Assignee: GreatPoint Energy, Inc.
    Inventors: Francis S. Lau, Earl T. Robinson
  • Publication number: 20150175914
    Abstract: Steam generating gasification reactors for providing high-pressure and high-temperature steam for catalytic gasification of a carbonaceous feedstock can be based on oxygen blown gasification reactors adapted for processing a slurry feedstock comprising at least 40% water. The exhaust from the slurry gasifier comprises at least steam, carbon monoxide and hydrogen. The slurry composition and the oxygen to fuel ratio can be varied to control the ratio of carbonaceous gases in the generator exhaust. By directing substantially all of exhaust gases produced from the slurry gasification reactor through the catalytic gasifier and subsequent gas separation and sequestration processes, a greatly higher energy efficiency and decreased carbon footprint can be realized.
    Type: Application
    Filed: March 4, 2015
    Publication date: June 25, 2015
    Inventors: Francis S. Lau, Earl T. Robinson
  • Publication number: 20150166910
    Abstract: Systems to convert a carbonaceous feedstock into a plurality of gaseous products are described. The systems include, among other units, two, three or four separate gasification reactors for the gasification of a carbonaceous feedstock in the presence of an alkali metal catalyst into the plurality of gaseous products including at least methane. Each of the gasification reactors may be supplied with the feedstock from a single or separate catalyst loading and/or feedstock preparation unit operations. Similarly, the hot gas streams from each gasification reactor may be purified via their combination at a heat exchanger, acid gas removal, or methane removal unit operations. Product purification may comprise trace contaminant removal units, ammonia removal and recovery units, and sour shift units.
    Type: Application
    Filed: February 23, 2015
    Publication date: June 18, 2015
    Inventors: Earl T. Robinson, Francis S. Lau, Dwain Dodson
  • Patent number: 9034061
    Abstract: The present invention relates generally to processes for preparing agglomerated particulate low-rank coal feedstocks of a particle size suitable for reaction in a fluidized-bed reactor and certain other gasification reactors and, in particular, for coal gasification and combustion applications. The present invention also relates to integrated coal gasification and combustion processes including preparing and utilizing such agglomerated particulate low-rank coal feedstocks.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 19, 2015
    Assignee: GreatPoint Energy, Inc.
    Inventors: Earl T. Robinson, Kenneth P. Keckler, Pattabhi K. Raman, Avinash Sirdeshpande
  • Patent number: 9034058
    Abstract: The present invention relates generally to processes for preparing agglomerated particulate low-rank coal feedstocks of a particle size suitable for reaction in certain gasification reactors and, in particular, for coal gasification. The present invention also relates to integrated coal gasification processes including preparing and utilizing such agglomerated particulate low-rank coal feedstocks.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 19, 2015
    Assignee: GreatPoint Energy, INc.
    Inventors: Earl T. Robinson, Kenneth P. Keckler, Pattabhi K. Raman, Avinash Sirdeshpande
  • Patent number: 9012524
    Abstract: The present invention relates generally to processes for hydromethanating a carbonaceous feedstock in a hydromethanation reactor to a methane product stream and a char by-product, and more specifically to removal of the char by-product from the hydromethanation reactor.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: April 21, 2015
    Assignee: GreatPoint Energy, Inc.
    Inventors: Earl T. Robinson, Pattabhi K. Raman
  • Patent number: 8999020
    Abstract: Processes for the catalytic conversion of a carbonaceous composition into a gas stream comprising methane are provided. In addition, the processes provide for the generation of a hydrogen-enriched gas stream and, optionally, a carbon monoxide-enriched gas stream, which can be mixed or used separately as an energy source for subsequent catalytic gasification processes.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: April 7, 2015
    Assignee: GreatPoint Energy, Inc.
    Inventors: Pattabhi K. Raman, Francis S. Lau, Earl T. Robinson
  • Patent number: 8728183
    Abstract: The present invention relates to processes for preparing gaseous products, and in particular methane, via the hydromethanation of a carbonaceous feedstock in the presence of steam, syngas, a hydromethanation catalyst and an oxygen-rich gas stream.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: May 20, 2014
    Assignee: GreatPoint Energy, Inc.
    Inventors: Vincent G. Reiling, Earl T. Robinson, Avinash Sirdeshpande, Nicholas Charles Nahas
  • Patent number: 8728182
    Abstract: The present invention relates to processes for preparing gaseous products, and in particular methane, via the hydromethanation of carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen and a hydromethanation catalyst.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: May 20, 2014
    Assignee: GreatPoint Energy, Inc.
    Inventors: Avinash Sirdeshpande, Earl T. Robinson
  • Publication number: 20140094636
    Abstract: The present invention relates generally to processes for preparing agglomerated particulate low-rank coal feedstocks of a particle size suitable for reaction in a fluidized-bed reactor and certain other gasification reactors and, in particular, for coal gasification and combustion applications. The present invention also relates to an integrated coal hydromethanation process including preparing and utilizing such agglomerated particulate low-rank coal feedstocks.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: GreatPoint Energy, Inc.
    Inventors: Earl T. Robinson, Kenneth P. Keckler, Pattabhi K. Raman, Avinash Sirdeshpande
  • Publication number: 20140091259
    Abstract: The present invention relates generally to processes for preparing agglomerated particulate low-rank coal feedstocks of a particle size suitable for reaction in certain gasification reactors and, in particular, for coal gasification. The present invention also relates to integrated coal gasification processes including preparing and utilizing such agglomerated particulate low-rank coal feedstocks.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: GreatPoint Energy, Inc.
    Inventors: Earl T. Robinson, Kenneth P. Keckler, Pattabhi K. Raman, Avinash Sirdeshpande
  • Publication number: 20140091258
    Abstract: The present invention relates generally to processes for preparing agglomerated particulate low-rank coal feedstocks of a particle size suitable for reaction in a fluidized-bed reactor and certain other gasification reactors and, in particular, for coal gasification and combustion applications. The present invention also relates to integrated coal gasification and combustion processes including preparing and utilizing such agglomerated particulate low-rank coal feedstocks.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: GreatPoint Energy, Inc.
    Inventors: Earl T. Robinson, Kenneth P. Keckler, Pattabhi K. Raman, Avinash Sirdeshpande
  • Publication number: 20140090584
    Abstract: The present invention relates generally to processes for preparing an inorganic sodium and/or chlorine contaminated low-rank coal feedstock for combustion in a fluidized fuel combustor to generate steam and, desirably, co-generate electricity.
    Type: Application
    Filed: September 27, 2013
    Publication date: April 3, 2014
    Applicant: GreatPoint Energy, Inc.
    Inventors: Avinash Sirdeshpande, Kenneth P. Keckler, Earl T. Robinson, Pattabhi K. Raman
  • Patent number: 8669013
    Abstract: The present invention relates to processes and apparatuses for generating electrical power from certain non-gaseous carbonaceous feedstocks through the integration of catalytic hydromethanation technology with fuel cell technology.
    Type: Grant
    Filed: February 21, 2011
    Date of Patent: March 11, 2014
    Assignee: Greatpoint Energy, Inc.
    Inventors: Charles Allen Powell, Pattabhi K. Raman, Earl T. Robinson, Avinash Sirdeshpande
  • Patent number: 8653149
    Abstract: The present invention relates to processes and apparatuses for generating light olefins, methane and other higher-value gaseous hydrocarbons from “liquid” heavy hydrocarbon feedstocks.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: February 18, 2014
    Assignee: GreatPoint Energy, Inc.
    Inventors: Earl T. Robinson, Pattabhi K. Raman, Wenyuan Wu