Patents by Inventor Avinash Sirdeshpande

Avinash Sirdeshpande 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).

  • Catalytic gasification to produce ammonia and urea
    Patent number: 10618818
    Abstract: The present invention provides a process for preparing higher-value products from carbonaceous feedstocks. The process includes converting carbonaceous feedstock in a hydromethanation reactor to a methane-enriched raw product stream, converting the methane-enriched raw product stream to an ammonia synthesis feed gas, then converting the ammonia synthesis feed gas to higher-value products such as ammonia and urea.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: April 14, 2020
    Assignee: Sure Champion Investment Limited
    Inventor: Avinash Sirdeshpande
  • Catalytic gasification to produce methanol
    Patent number: 10464872
    Abstract: The present invention provides a process for preparing higher-value products from carbonaceous feedstocks. The process includes converting carbonaceous feedstock in a hydromethanation reactor to a methane-enriched raw product stream, converting the methane-enriched raw product stream to a methanol synthesis feed gas, then converting the methanol synthesis feed gas to higher-value products such as methanol and dimethyl ether.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: November 5, 2019
    Assignee: GreatPoint Energy, Inc.
    Inventors: Avinash Sirdeshpande, Earl Robinson, Pattabhi K. Raman
  • Hydromethanation of a carbonaceous feedstock with improved carbon utilization and power generation
    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
  • Hydromethanation of a carbonaceous feedstock with improved carbon utilization
    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
  • Hydromethanation of a carbonaceous feedstock
    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
  • Use of contaminated low-rank coal for combustion
    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
  • Agglomerated particulate low-rank coal feedstock and uses thereof
    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
  • Hydromethanation of a carbonaceous feedstock
    Patent number: 9127221
    Abstract: The present invention relates to processes for hydromethanating a carbonaceous feedstock to an acid gas-depleted methane-enriched synthesis gas, with improved efficiency of the acid gas removal treatment.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: September 8, 2015
    Assignee: GreatPoint Energy, Inc.
    Inventor: Avinash Sirdeshpande
  • Agglomerated particulate low-rank coal feedstock and uses thereof
    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
  • Agglomerated particulate low-rank coal feedstock and uses thereof
    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
  • Hydromethanation of a carbonaceous feedstock
    Patent number: 8748687
    Abstract: The present invention relates to a steam-integrated and heat-integrated process for preparing gaseous products, and in particular methane and/or other value added gaseous products such as hydrogen, via the hydromethanation of non-gaseous carbonaceous feedstocks in the presence of steam, carbon monoxide, hydrogen, oxygen and a hydromethanation catalyst.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: June 10, 2014
    Assignee: GreatPoint Energy, Inc.
    Inventor: Avinash Sirdeshpande
  • Processes for hydromethanation of a carbonaceous feedstock
    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
  • Processes for hydromethanation of a carbonaceous feedstock
    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
  • AGGLOMERATED PARTICULATE LOW-RANK COAL FEEDSTOCK AND USES THEREOF
    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
  • USE OF CONTAMINATED LOW-RANK COAL FOR COMBUSTION
    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
  • AGGLOMERATED PARTICULATE LOW-RANK COAL FEEDSTOCK AND USES THEREOF
    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
  • AGGLOMERATED PARTICULATE LOW-RANK COAL FEEDSTOCK AND USES THEREOF
    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
  • Integrated hydromethanation fuel cell power generation
    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
  • Integrated hydromethanation fuel cell power generation
    Patent number: 8652696
    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: March 3, 2011
    Date of Patent: February 18, 2014
    Assignee: Greatpoint Energy, Inc.
    Inventor: Avinash Sirdeshpande
  • HYDROMETHANATION OF A CARBONACEOUS FEEDSTOCK
    Publication number: 20130046124
    Abstract: The present invention relates to processes for hydromethanating a carbonaceous feedstock to a hot methane-enriched synthesis gas, in which heat energy from the hot methane-enriched synthesis gas is used to generate a dry saturated steam stream, and the dry saturated steam stream is converted into a superheated steam stream via pressure drop for feeding into the hydromethanation reactor to satisfy the steam demand of the hydromethanation reaction.
    Type: Application
    Filed: August 15, 2012
    Publication date: February 21, 2013
    Applicant: GREATPOINT ENERGY, INC.
    Inventor: Avinash Sirdeshpande