Patents Assigned to GTL Energy
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Patent number: 9499756Abstract: The invention provides a method by which high moisture low rank coal or other carbonaceous material may be transformed into a high-energy, water resistant product. The raw feed is comminuted then mechanically compacted by a roller press with rolls of a specified profile to mobilize the inherent moisture and collapse most of the interstitial pore space. The mobilized moisture is then removed by low-temperature drying and the material is sized and shaped to form a product that is resistant to re-absorption of water or other liquids. The present invention will promote the use of low rank coal for liquefaction and gasification.Type: GrantFiled: March 17, 2014Date of Patent: November 22, 2016Assignee: GTL Energy Holdings Pty LimitedInventors: Robert R. French, Robert A. Reeves, Patrick B. Auell
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Publication number: 20140311022Abstract: The invention provides a method by which high moisture low rank coal or other carbonaceous material may be transformed into a high-energy, water resistant product. The raw feed is comminuted then mechanically compacted by a roller press with rolls of a specified profile to mobilize the inherent moisture and collapse most of the interstitial pore space. The mobilized moisture is then removed by low-temperature drying and the material is sized and shaped to form a product that is resistant to re-absorption of water or other liquids. The present invention will promote the use of low rank coal for liquefaction and gasification.Type: ApplicationFiled: March 17, 2014Publication date: October 23, 2014Applicant: GTL Energy Holdings Pty LimitedInventors: Robert R. French, Robert A. Reeves, Patrick B. Auell
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Patent number: 8673030Abstract: The invention provides a method by which high moisture low rank coal or other carbonaceous material may be transformed into a high-energy, water resistant product. The raw feed is comminuted then mechanically compacted by a roller press with rolls of a specified profile to mobilize the inherent moisture and collapse most of the interstitial pore space. The mobilized moisture is then removed by low-temperature drying and the material is sized and shaped to form a product that is resistant to re-absorption of water or other liquids. The present invention will promote the use of low rank coal for liquefaction and gasification.Type: GrantFiled: August 1, 2008Date of Patent: March 18, 2014Assignee: GTL Energy Holdings Pty LimitedInventors: Robert R. French, Robert A. Reeves, Patrick B. Auell
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Patent number: 8673032Abstract: The present invention provides methods of transforming low rank coals into high quality metallurgical coke, and the coke products produced by such methods.Type: GrantFiled: April 6, 2012Date of Patent: March 18, 2014Assignee: GTL Energy Holdings Pty LimitedInventors: Robert French, Robert A. Reeves
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Publication number: 20130326938Abstract: The invention provides methods of reducing the energy required to remove moisture from biomass, carbonaceous materials and mixtures of the same. The method significantly reduces the energy requirements by removing moisture as a liquid and by transferring the moisture to the surface of the material where it is more easily and efficiently evaporated.Type: ApplicationFiled: December 15, 2011Publication date: December 12, 2013Applicant: GTL ENERGY HOLDING PTY LIMITEDInventors: Robert French, Robert A. Reeves
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Patent number: 8453953Abstract: The invention provides low-cost, non-thermal methods to transform and beneficiate bulk materials, including low rank coals such as peat, lignite, brown coal, subbituminous coal, other carbonaceous solids or derived feedstock. High pressure compaction and comminution processes are linked to transform the solid materials by eliminating interstitial, capillary, pores, or other voids that are present in the materials and that may contain liquid, air or gases that are detrimental to the quality and performance of the bulk materials, thereby beneficiating the bulk products to provide premium feedstock for industrial or commercial uses, such as electric power generation, gasification, liquefaction, and carbon activation. The handling characteristics, dust mitigation aspects and combustion emissions of the products may also be improved.Type: GrantFiled: March 11, 2011Date of Patent: June 4, 2013Assignee: GTL Energy Holdings Pty LimitedInventors: Robert R. French, Robert A. Reeves
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Publication number: 20120255224Abstract: The present invention provides methods of transforming low rank coals into high quality metallurgical coke, and the coke products produced by such methods.Type: ApplicationFiled: April 6, 2012Publication date: October 11, 2012Applicant: GTL ENERGY LTDInventors: Robert French, Robert A. Reeves
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Publication number: 20110167715Abstract: The invention provides low-cost, non-thermal methods to transform and beneficiate bulk materials, including low rank coals such as peat, lignite, brown coal, subbituminous coal, other carbonaceous solids or derived feedstock. High pressure compaction and comminution processes are linked to transform the solid materials by eliminating interstitial, capillary, pores, or other voids that are present in the materials and that may contain liquid, air or gases that are detrimental to the quality and performance of the bulk materials, thereby beneficiating the bulk products to provide premium feedstock for industrial or commercial uses, such as electric power generation, gasification, liquefaction, and carbon activation. The handling characteristics, dust mitigation aspects and combustion emissions of the products may also be improved.Type: ApplicationFiled: March 11, 2011Publication date: July 14, 2011Applicant: GTL ENERGY, LTDInventors: Robert R. French, Robert A. Reeves
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Patent number: 7913939Abstract: The invention provides low-cost, non-thermal methods to transform and beneficiate bulk materials, including low rank coals such as peat, lignite, brown coal, subbituminous coal, other carbonaceous solids or derived feedstock. High pressure compaction and comminution processes are linked to transform the solid materials by eliminating interstitial, capillary, pores, or other voids that are present in the materials and that may contain liquid, air or gases that are detrimental to the quality and performance of the bulk materials, thereby beneficiating the bulk products to provide premium feedstock for industrial or commercial uses, such as electric power generation, gasification, liquefaction, and carbon activation. The handling characteristics, dust mitigation aspects and combustion emissions of the products may also be improved.Type: GrantFiled: April 28, 2006Date of Patent: March 29, 2011Assignee: GTL Energy, Ltd.Inventors: Robert R. French, Robert A. Reeves
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Patent number: 7128767Abstract: The ash content of raw coals, lignite, and other carbonaceous materials is reduced by leaching the high-ash material with an aqueous acidic waste product produced by a Fischer-Tropsch reaction. The acidic aqueous waste is mixed with coal and process conditions are described. The claim takes advantage of using otherwise uneconomic coal, lignite or other carbonaceous material by upgrading the material to a suitable feedstock for combustion in a power plant or gasifier.Type: GrantFiled: July 1, 2004Date of Patent: October 31, 2006Assignee: GTL EnergyInventors: Robert R French, Robert A. Reeves
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Publication number: 20050039386Abstract: The ash content of raw coals, lignite, and other carbonaceous materials is reduced by leaching the high-ash material with an aqueous acidic waste product produced by a Fischer-Tropsch reaction. The acidic aqueous waste is mixed with coal and process conditions are described. The claim takes advantage of using otherwise uneconomic coal, lignite or other carbonaceous material by upgrading the material to a suitable feedstock for combustion in a power plant or gasifier.Type: ApplicationFiled: July 1, 2004Publication date: February 24, 2005Applicant: GTL EnergyInventors: Robert French, Robert Reeves
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Patent number: 6664302Abstract: The invention provides a method by which low-rank coal may be processed to provide a high-energy feedstock for coal gasification and synthesis gas production. Preliminary coal, preparation, which may include washing and drying, is followed by wax-impregnation to produce a high-energy, low-moisture, stable feedstock. The wax is preferably obtained from an on-site Fischer-Tropsch reactor that also produces diesel fuel and naptha.Type: GrantFiled: April 12, 2002Date of Patent: December 16, 2003Assignee: GTL EnergyInventors: Robert French, Robert A. Reeves, Charles B. Benham