Patents by Inventor Mathias Ragot
Mathias Ragot 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).
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Patent number: 11703187Abstract: The invention relates to a method for providing pressurized gas from a source of liquefied gas to a consumer (8), wherein vaporized gas is supplied from the source of liquefied gas (1) through a main input line (2) to a compressor arrangement (300) for pressurizing the vaporized gas, the compressor arrangement (300) comprising a plurality of compressor modules (3, 5, 31, 51), each compressor module being able to operate independently from any other compressor module of the compressor arrangement (300), one or more of the compressor modules (5, 51) of the compressor arrangement (300) can be bypassed, and wherein gas is conducted through only a part or all of the compressor modules depending on at least one of pressure level, temperature level, mass flow and composition of the gas to be provided to the consumer (8).Type: GrantFiled: December 12, 2018Date of Patent: July 18, 2023Assignee: Cryostar SASInventor: Mathias Ragot
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Publication number: 20210156517Abstract: The present invention relates to a method and an apparatus for storing liquefied gas in at least one insulated container (1) while withdrawing evaporated gas from one or more of the at least one container (1), wherein at least a part of the evaporated gas is supplied to a recondenser (11) and wherein liquefied gas is withdrawn from one or more of the at least one container (1) and at least in part supplied to the recondenser (11) for recondensing the evaporated gas supplied to the recondenser (11) such that recondensed gas is obtained at a recondenser outlet, wherein before supplying the liquefied gas to the recondenser (11), the liquefied gas is subcooled by passing it through a refrigeration unit (8, 9), at least a part of the subcooled liquefied gas being supplied to the recondenser (11), and wherein at least a part of the recondensed gas obtained at the outlet of the recondenser (11) is reintroduced into one or more of the at least one container (1).Type: ApplicationFiled: July 26, 2018Publication date: May 27, 2021Inventors: Mathias RAGOT, Frederic MARCUCCILLI, Fabien FABRE
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Publication number: 20210071815Abstract: The invention relates to a method for providing pressurized gas from a source of liquefied gas to a consumer (8), wherein vaporized gas is supplied from the source of liquefied gas (1) through a main input line (2) to a compressor arrangement (300) for pressurizing the vaporized gas, the compressor arrangement (300) comprising a plurality of compressor modules (3, 5, 31, 51), each compressor module being able to operate independently from any other compressor module of the compressor arrangement (300), one or more of the compressor modules (5, 51) of the compressor arrangement (300) can be bypassed, and wherein gas is conducted through only a part or all of the compressor modules depending on at least one of pressure level, temperature level, mass flow and composition of the gas to be provided to the consumer (8).Type: ApplicationFiled: December 12, 2018Publication date: March 11, 2021Inventor: Mathias RAGOT
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Patent number: 10914516Abstract: The system for treating a gas deriving from the evaporation of a cryogenic liquid and supplying pressurized gas to a gas engine according to the invention comprises, on the one hand, from upstream to downstream, a reliquefaction unit (10) with compression means (11, 12, 13), a first heat exchanger (17) and expansion means (30), and, on the other hand, a pressurized gas supply line comprising, from upstream to downstream, a pump (48) for pressurizing the liquid and high-pressure vaporization means (61). The pressurized gas supply line has, upstream of the vaporization means (61), a bypass (57) for supplying a second heat exchanger (60) between, on the one hand, pressurized liquid of the supply line (56) and, on the other hand, a line (22) of the reliquefaction unit (10) downstream of the first exchanger and upstream of the expansion means (30).Type: GrantFiled: March 22, 2017Date of Patent: February 9, 2021Assignee: CRYOSTAR SASInventor: Mathias Ragot
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Patent number: 10801775Abstract: A system (100) for liquefying a gas comprises a liquid piston gas multistage compressor (2). It can be arranged on-board a liquefied gas carrier for recycling boil-off gas. Such system may be easily adapted or controlled for matching wide requirement ranges for variations of the liquefaction capacity. In addition, at least part of the liquid piston gas multistage compressor can be shared between the gas liquefying system and an extra gas-fed device. Such extra gas-fed device may be in particular a gas-fuelled or hybrid fuel propulsion engine of the vessel.Type: GrantFiled: January 9, 2017Date of Patent: October 13, 2020Assignee: CRYOSTAR SASInventors: Mathias Ragot, Frederic Marcuccilli
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Publication number: 20190101329Abstract: The system for treating a gas deriving from the evaporation of a cryogenic liquid and supplying pressurized gas to a gas engine according to the invention comprises, on the one hand, from upstream to downstream, a reliquefaction unit (10) with compression means (11, 12, 13), a first heat exchanger (17) and expansion means (30), and, on the other hand, a pressurized gas supply line comprising, from upstream to downstream, a pump (48) for pressurizing the liquid and high-pressure vaporization means (61). The pressurized gas supply line has, upstream of the vaporization means (61), a bypass (57) for supplying a second heat exchanger (60) between, on the one hand, pressurized liquid of the supply line (56) and, on the other hand, a line (22) of the reliquefaction unit (10) downstream of the first exchanger and upstream of the expansion means (30).Type: ApplicationFiled: March 22, 2017Publication date: April 4, 2019Applicant: CRYOSTAR SASInventor: Mathias RAGOT
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Publication number: 20190056174Abstract: A system (100) for liquefying a gas comprises a liquid piston gas multistage compressor (2). It can be arranged on-board a liquefied gas carrier for recycling boil-off gas. Such system may be easily adapted or controlled for matching wide requirement ranges for variations of the liquefaction capacity. In addition, at least part of the liquid piston gas multistage compressor can be shared between the gas liquefying system and an extra gas-fed device. Such extra gas-fed device may be in particular a gas-fuelled or hybrid fuel propulsion engine of the vessel.Type: ApplicationFiled: January 9, 2017Publication date: February 21, 2019Applicant: CRYOSTAR SASInventors: Mathias RAGOT, Frederic MARCUCCILLI
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Publication number: 20180245843Abstract: The proposed system comprises a supply line for at least one engine, on which line is situated a first compression unit (3) for said gas and a bypass to a return line on which are successively situated cooling means (10) and reliquefaction means (30). The cooling means successively comprise a second compression unit (11, 12, 13) and a heat exchanger (17). Downstream of the second compression unit (11, 12, 13) a bypass to a loop (18, 20, 21) comprises first expansion means (14), the loop rejoining the return line upstream of the second compression unit (11, 12, 13) after having passed through the heat exchanger (17) in the opposite direction with respect to the gas fraction not bypassed via the loop.Type: ApplicationFiled: September 2, 2016Publication date: August 30, 2018Applicant: Cryostar SASInventor: Mathias Ragot
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Patent number: 10030815Abstract: Natural gas boiling off from LNG storage tanks located on board a sea-going vessel, is compressed in a plural stage compressor. At least part of the flow of compressed natural gas is sent to a liquefier operating on a Brayton cycle in order to be reliquefied. The temperature of the compressed natural gas from the final stage is reduced to below 0° C. by passage through a heat exchanger. The first compression stage is operated as a cold compressor and the resulting cold compressed natural gas is employed in the heat exchanger to effect the necessary cooling of the flow from the compression stage. Downstream of its passage through the heat exchanger the cold compressed natural gas flows through the remaining stages of the compressor. If desired, a part of the compressed natural gas may be supplied to the engines of the sea-going vessel as a fuel.Type: GrantFiled: December 17, 2013Date of Patent: July 24, 2018Assignee: CRYOSTAR SASInventors: Vincent Fuchs, Mathias Ragot
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Publication number: 20160216029Abstract: This device comprises: a compression unit (4) having a plurality of stages, said unit being supplied with gas from the cryogenic tank (2) and delivering gas at an engine supply pressure, a reliquefaction system (20) having an outlet for liquid to the cryogenic tank (2), and an exchanger (10) arranged between the cryogenic tank (2) and the compression unit (4), in order to heat the evaporation gas coming from the tank (2) before it enters the compression unit (4). The evaporation gas coming from the cryogenic tank (2) is heated by gas compressed inside the compression unit (4) to a pressure lower than the engine supply pressure. The reliquefaction system (20) is supplied with gas compressed inside the compression unit (4) to a pressure lower than the supply pressure of the engine.Type: ApplicationFiled: September 11, 2014Publication date: July 28, 2016Inventor: Mathias RAGOT
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Publication number: 20150330574Abstract: Natural gas boiling off from LNG storage tanks located on board a sea-going vessel, is compressed in a plural stage compressor. At least part of the flow of compressed natural gas is sent to a liquefier operating on a Brayton cycle in order to be reliquefied. The temperature of the compressed natural gas from the final stage is reduced to below 0° by passage through a heat exchanger. The first compression stage is operated as a cold compressor and the resulting cold compressed natural gas is employed in the heat exchanger to effect the necessary cooling of the flow from the compression stage. Downstream of its passage through the heat exchanger the cold compressed natural gas flows through the remaining stages of the compressor. If desired, a part of the compressed natural gas may be supplied to the engines of the sea-going vessel as a fuel.Type: ApplicationFiled: December 17, 2013Publication date: November 19, 2015Inventors: Vincent Fuchs, Mathias Ragot
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Publication number: 20110132003Abstract: A method of and apparatus for converting liquefied natural gas (LNG) to a superheated fluid through vaporisation and superheating of the LNG employs a first main heat exchanger in series with a second main heat exchanger. The first main heat exchanger is heated by a condensing first heat exchange fluid flowing in a first heat exchange circuit including a first supplementary heat exchanger for revaporising the first heat exchange fluid and the second main heat exchanger by a condensing second heat exchange fluid flowing in a second heat exchange circuit including a second heat exchanger for vaporising the second heat exchange fluid. The circuits and may share a common vessel for collecting condensate. The condensing pressure of the heat exchange fluid in the first circuit is less than condensing pressure of the heat exchange fluid in the second circuit.Type: ApplicationFiled: July 15, 2009Publication date: June 9, 2011Inventors: Josef Pozivil, Mathias Ragot