Patents by Inventor Nicholas Charles Nahas
Nicholas Charles Nahas 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: 8728183Abstract: 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: GrantFiled: May 12, 2010Date of Patent: May 20, 2014Assignee: GreatPoint Energy, Inc.Inventors: Vincent G. Reiling, Earl T. Robinson, Avinash Sirdeshpande, Nicholas Charles Nahas
-
Patent number: 8647402Abstract: The present invention relates to processes and continuous processes for preparing gaseous products, and in particular, methane via the catalytic gasification of carbonaceous feedstocks in the presence of steam. In one aspect of the invention, the processes comprise at least partially combusting a first carbonaceous feedstock with an oxygen-rich gas stream in an oxygen-blown gasifier, under suitable temperature and pressure, to generate a first gas stream comprising hydrogen, carbon monoxide and superheated steam; and reacting a second carbonaceous feedstock and the first gas stream in a catalytic gasifier in the presence of a gasification catalyst under suitable temperature and pressure to form a second gas stream comprising a plurality of gaseous products comprising methane, carbon dioxide, hydrogen, carbon monoxide and hydrogen sulfide.Type: GrantFiled: September 18, 2009Date of Patent: February 11, 2014Assignee: Greatpoint Energy, Inc.Inventors: Earl T. Robinson, Francis S. Lau, Pattabhi K. Raman, Vincent G. Reiling, Dwain Dodson, Mustafiz Rahman, Nicholas Charles Nahas
-
Patent number: 8502007Abstract: The invention provides processes for generating a methane-enriched gas from a gas mixture comprising carbon monoxide and hydrogen such as gas streams generated by gasification of an alkali metal catalyst-loaded carbonaceous feedstock, and a char methanation catalyst useful in such processes.Type: GrantFiled: September 18, 2009Date of Patent: August 6, 2013Assignee: Greatpoint Energy, Inc.Inventors: Edwin J. Hippo, Vincent G. Reiling, Earl T. Robinson, Pattabhi K. Raman, Jeffery Smith, Charles Mims, Nicholas Charles Nahas
-
Patent number: 8328890Abstract: The present invention relates to processes for preparing gaseous products, and in particular, methane via the catalytic gasification of carbonaceous feedstocks in the presence of steam and an oxygen-rich gas stream. The processes comprise using at least one catalytic methanator to convert carbon monoxide and hydrogen in the gaseous products to methane and do not recycle carbon monoxide or hydrogen to the catalytic gasifier.Type: GrantFiled: September 18, 2009Date of Patent: December 11, 2012Assignee: GreatPoint Energy, Inc.Inventors: Vincent G. Reiling, Earl T. Robinson, Nicholas Charles Nahas, Jeffery Smith, Charles Mims
-
Patent number: 8114176Abstract: The present invention provides a catalytic steam gasification process for gasifying petroleum coke. The solids composition within the gasification reactor of the disclosed invention is maintained by controlling the catalyst composition of the feed. The process utilizes sour water from the raw gasification product gases to recover and recycle catalyst. Fine particles generated in the handling of coke are advantageously utilized to increase the efficiency of the process.Type: GrantFiled: October 12, 2005Date of Patent: February 14, 2012Assignee: Great Point Energy, Inc.Inventor: Nicholas Charles Nahas
-
Publication number: 20100287835Abstract: 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: ApplicationFiled: May 12, 2010Publication date: November 18, 2010Applicant: GREATPOINT ENERGY, INC.Inventors: Vincent G. Reiling, Earl T. Robinson, Avinash Sirdeshpande, Nicholas Charles Nahas
-
Publication number: 20100121125Abstract: The invention provides processes for generating a methane-enriched gas from a gas mixture comprising carbon monoxide and hydrogen such as gas streams generated by gasification of an alkali metal catalyst-loaded carbonaceous feedstock, and a char methanation catalyst useful in such processes.Type: ApplicationFiled: September 18, 2009Publication date: May 13, 2010Applicant: GREATPOINT ENERGY, INC.Inventors: Edwin J. Hippo, Vincent G. Reiling, Earl T. Robinson, Pattabhi K. Raman, Jeffery Smith, Charles Mims, Nicholas Charles Nahas
-
Publication number: 20100120926Abstract: The present invention relates to processes for preparing gaseous products, and in particular, methane via the catalytic gasification of carbonaceous feedstocks in the presence of steam. The processes comprise using at least one methanation step to convert carbon monoxide and hydrogen in the gaseous products to methane and do not recycle carbon monoxide or hydrogen to the catalytic gasifier.Type: ApplicationFiled: September 18, 2009Publication date: May 13, 2010Applicant: GREATPOINT ENERGY, INC.Inventors: Earl T. Robinson, Avinash Sirdeshpande, Eli Gal, Vincent G. Reiling, Nicholas Charles Nahas
-
Publication number: 20100071262Abstract: The present invention relates to processes and continuous processes for preparing gaseous products, and in particular, methane via the catalytic gasification of carbonaceous feedstocks in the presence of steam. In one aspect of the invention, the processes comprise at least partially combusting a first carbonaceous feedstock with an oxygen-rich gas stream in an oxygen-blown gasifier, under suitable temperature and pressure, to generate a first gas stream comprising hydrogen, carbon monoxide and superheated steam; and reacting a second carbonaceous feedstock and the first gas stream in a catalytic gasifier in the presence of a gasification catalyst under suitable temperature and pressure to form a second gas stream comprising a plurality of gaseous products comprising methane, carbon dioxide, hydrogen, carbon monoxide and hydrogen sulfide.Type: ApplicationFiled: September 18, 2009Publication date: March 25, 2010Applicant: GREATPOINT ENERGY, INC.Inventors: Earl T. Robinson, Francis S. Lau, Pattabhi K. Raman, Vincent G. Reiling, Dwain Dodson, Mustafiz Rahman, Nicholas Charles Nahas
-
Publication number: 20100076235Abstract: The present invention relates to processes for preparing gaseous products, and in particular, methane via the catalytic gasification of carbonaceous feedstocks in the presence of steam and an oxygen-rich gas stream. The processes comprise using at least one catalytic methanator to convert carbon monoxide and hydrogen in the gaseous products to methane and do not recycle carbon monoxide or hydrogen to the catalytic gasifier.Type: ApplicationFiled: September 18, 2009Publication date: March 25, 2010Applicant: GREATPOINT ENERGY, INC.Inventors: Vincent G. Reiling, Earl T. Robinson, Nicholas Charles Nahas, Jeffery Smith, Charles Mims
-
Publication number: 20090170968Abstract: The present invention provides processes for making synthesis gas and processes for making syngas-derived products.Type: ApplicationFiled: December 23, 2008Publication date: July 2, 2009Applicant: GreatPoint Energy, Inc.Inventors: Nicholas Charles Nahas, Earl T. Robinson
-
Patent number: 6955695Abstract: This invention discloses improvements on previous inventions for catalytic conversion of coal and steam to methane. The disclosed improvements permit conversion of petroleum residua or heavy crude petroleum to methane and carbon dioxide such that nearly all of the heating value of the converted hydrocarbons is recovered as heating value of the product methane. The liquid feed is distributed over a fluidized solid particulate catalyst containing alkali metal and carbon as petroleum coke at elevated temperature and pressure from the lower stage and transported to the upper stage of a two-stage reactor. Particulate solids containing carbon and alkali metal are circulated between the two stages. Superheated steam and recycled hydrogen and carbon monoxide are fed to the lower stage, fluidizing the particulate solids and gasifying some of the carbon. The gas phase from the lower stage passes through the upper stage, completing the reaction of the gas phase.Type: GrantFiled: March 5, 2002Date of Patent: October 18, 2005Assignee: Petro 2020, LLCInventor: Nicholas Charles Nahas
-
Publication number: 20030167691Abstract: This invention discloses improvements on previous inventions for catalytic conversion of coal and steam to methane. The disclosed improvements permit conversion of petroleum residua or heavy crude petroleum to methane and carbon dioxide such that nearly all of the heating value of the converted hydrocarbons is recovered as heating value of the product methane. The liquid feed is distributed over a fluidized solid particulate catalyst containing alkali metal and carbon as petroleum coke at elevated temperature and pressure from the lower stage and transported to the upper stage of a two-stage reactor. Particulate solids containing carbon and alkali metal are circulated between the two stages. Superheated steam and recycled hydrogen and carbon monoxide are fed to the lower stage, fluidizing the particulate solids and gasifying some of the carbon. The gas phase from the lower stage passes through the upper stage, completing the reaction of the gas phase.Type: ApplicationFiled: March 5, 2002Publication date: September 11, 2003Inventor: Nicholas Charles Nahas
-
Patent number: 6585883Abstract: A method for removing or reducing coke deposits in a refinery reactor unit utilizing a reactant gas, preferably steam, and catalyst.Type: GrantFiled: October 10, 2000Date of Patent: July 1, 2003Assignee: ExxonMobil Research and Engineering CompanyInventors: Simon Robert Kelemen, Michael Siskin, Glen Edward Phillips, Nicholas Charles Nahas
-
Patent number: 6406613Abstract: A method for mitigating the condensation of liquid hydrocarbons and subsequent coke deposition in refinery reactor units by dew point suppression.Type: GrantFiled: October 10, 2000Date of Patent: June 18, 2002Assignee: ExxonMobil Research and Engineering Co.Inventors: Nicholas Charles Nahas, Dean Clise Draemel, Richard Edwards Walter, Michael Siskin, Glen Edward Phillips