公开(公告)号：US10563621B2

公开(公告)日：2020-02-18

申请号：US16071000

申请日：2017-01-09

申请人： CRYOSTAR SAS

发明人： Guillaume Pages

IPC分类号： F04B25/00 ,  F04B15/00 ,  F02M21/02 ,  F04B39/00 ,  F25J1/00 ,  F25J1/02 ,  F04B41/06 ,  F04B39/06 ,  F04B49/06 ,  F04B49/22 ,  F04B15/08

摘要： A system for supplying compressed gas to several gas-fed devices is based on a liquid piston gas multistage compressor (100). Gas pressure measurements performed at a gas intake (10), an intermediate gas outlet (20) and at an end gas outlet (30) of the system allow controlling respective gas capacities of the compressor stages. Easy and reliable control can thus be obtained for the system operation. Varying the number of the compressor stages allows matching any pressure requirements for the gas delivery to all the gas-fed devices, and varying the gas capacities of the compressor stages allows easy adaptation to variable gas consumptions of the gas-fed devices.

公开(公告)号：US20180245843A1

公开(公告)日：2018-08-30

申请号：US15755743

申请日：2016-09-02

申请人： Cryostar SAS

发明人： Mathias Ragot

IPC分类号： F25J1/00 ,  F25J1/02

CPC分类号： F25J1/0025 ,  F25J1/0037 ,  F25J1/004 ,  F25J1/0202 ,  F25J1/0247 ,  F25J1/0288 ,  F25J1/0292

摘要： 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.

公开(公告)号：US10030815B2

公开(公告)日：2018-07-24

申请号：US14652859

申请日：2013-12-17

申请人： CRYOSTAR SAS

发明人： Vincent Fuchs ,  Mathias Ragot

IPC分类号： F25J1/00 ,  F17C9/02 ,  F25J1/02 ,  F17C13/00

摘要： 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.

公开(公告)号：US20120317997A1

公开(公告)日：2012-12-20

申请号：US13500717

申请日：2010-10-08

申请人： Josef Pozivil ,  David De Nardis

发明人： Josef Pozivil ,  David De Nardis

IPC分类号： F17C9/02 ,  F17C13/08

CPC分类号： F17C9/02 ,  F17C2221/033 ,  F17C2223/0161 ,  F17C2223/033 ,  F17C2225/0115 ,  F17C2225/0123 ,  F17C2225/033 ,  F17C2225/035 ,  F17C2225/036 ,  F17C2227/0135 ,  F17C2227/0318 ,  F17C2227/0323 ,  F17C2227/0393 ,  F17C2265/05 ,  F17C2270/0105 ,  F17C2270/0113

摘要： Liquefied Natural Gas (LNG) is converted to a superheated fluid at a temperature greater than 5° C. by being passed under pressure through a train of first, second and third main heat exchange stages in series, in which the natural gas is heated by a circulating heat exchange fluid flowing in heat exchange circuits. The heat exchange fluid condenses in the first and second heat exchange stages and is partially vaporised in subsidiary heat exchangers which may be heated by sea water flowing in open cycle.

摘要翻译： 液化天然气（LNG）通过在压力下通过串联的第一，第二和第三主要热交换阶段串联转化为过热流体，温度大于5℃，其中天然气被加热 循环热交换流体在热交换回路中流动。 热交换流体在第一和第二热交换阶段中冷凝，并在辅助热交换器中被部分蒸发，该热交换器可以通过在开放循环中流动的海水加热。

公开(公告)号：US20100000253A1

公开(公告)日：2010-01-07

申请号：US12301057

申请日：2007-05-23

申请人： Vincent Fuchs

发明人： Vincent Fuchs

IPC分类号： F25J1/00

CPC分类号： F25J1/0204 ,  F17C2221/033 ,  F17C2223/0161 ,  F17C2223/033 ,  F17C2250/0439 ,  F17C2265/03 ,  F17C2265/034 ,  F17C2265/037 ,  F17C2270/0105 ,  F25J1/0025 ,  F25J1/0045 ,  F25J1/005 ,  F25J1/0072 ,  F25J1/0208 ,  F25J1/0277 ,  F25J1/0288 ,  F25J2205/30 ,  F25J2220/62 ,  F25J2230/04 ,  F25J2230/08 ,  F25J2230/60 ,  F25J2245/02

摘要： Boiled off liquefied natural gas flows from a storage tank and is compressed in vapour compression stages. The resulting compressed vapour is condensed in a condenser and the condensate returned to the tank. The condenser is cooled by a working fluid, for example nitrogen, flowing in a Brayton cycle. The Brayton cycle includes a heat exchanger which removes heat of compression from the compressed natural gas vapour upstream of its passage through the condenser. In addition a part of the working fluid is withdrawn from a region of the Brayton cycle intermediate the working fluid outlet from the condenser and the working fluid inlet to the heat exchanger and the withdrawn working fluid flows through another heat exchanger in which it removes heat of compression from the natural gas vapour intermediate the compression stages. The withdrawn working fluid is returned to the Brayton cycle.

摘要翻译： 煮沸的液化天然气从储罐流出，并在蒸气压缩阶段进行压缩。 所得的压缩蒸汽在冷凝器中冷凝，冷凝物返回到罐中。 冷凝器由在Brayton循环中流动的工作流体例如氮气冷却。 布雷顿循环包括热交换器，该热交换器从压缩的天然气蒸气的上游通过冷凝器去除压缩热。 另外，工作流体的一部分从Brayton循环的区域中撤出，该区域在工作流体出口处从冷凝器和工作流体入口到达热交换器，并且所抽出的工作流体流过另一个热交换器，在该热交换器中， 在压缩阶段之间从天然气蒸汽压缩。 撤回的工作流体返回到布雷顿循环。

公开(公告)号：US20230296294A1

公开(公告)日：2023-09-21

申请号：US18040938

申请日：2021-08-03

申请人： Cryostar SAS

发明人： Guillaume PAGES

IPC分类号： F25B9/10 ,  F25B9/06 ,  F17C3/10

CPC分类号： F25B9/10 ,  F25B9/06 ,  F17C3/10 ,  F17C2221/033 ,  F17C2227/0355 ,  F17C2223/0161

摘要： Simplified closed loop refrigeration system adapted for cryogenic temperatures comprising: a gaseous refrigerant circulating inside the closed loop refrigeration system, a compression section for compressing the refrigerant with at least two compressor stages, at least one of the compressor stages being one centrifugal compressor, at least a motor producing mechanical power to drive at least one of the compressor stages, at least an after cooler after each compression stage, a first heat exchanger for additionally cooling the compressed refrigerant, at least one expansion turbine for expanding the compressed refrigerant, a second heat exchanger for exchanging heat between the expanded refrigerant and an external fluid, a heating section where the expanded refrigerant is heated in counter-current flow inside the first heat-exchanger by the compressed refrigerant, wherein at least one centrifugal compressor being driven only by the expansion turbine and the centrifugal compressors and the expansion turbine use magnetic bearings.

公开(公告)号：US20230125267A1

公开(公告)日：2023-04-27

申请号：US17905574

申请日：2021-03-02

申请人： Cryostar SAS ,  Linde GmbH

发明人： Dimitri GOLUBEV ,  Eric DOPPLER

IPC分类号： F25J3/04

摘要： According to the present invention, a method for cryogenic separation of air using an air separation unit comprising a rectification column is provided. Feed air is compressed, cooled and rectified in the rectification column obtaining an overhead gas, wherein a part of the overhead gas of the rectification column is condensed using fluid withdrawn from the rectification column, wherein the condensed overhead gas is used at least in part as a liquid reflux to the rectification column, wherein a first part of the fluid which is used for cooling the overhead gas of the rectification column is, after its use for cooling, compressed and reintroduced into the rectification column, and wherein a second part of the fluid which is used for cooling the overhead gas of the rectification column is, after its use for cooling, expanded and withdrawn from the air separation unit.

公开(公告)号：US11592143B2

公开(公告)日：2023-02-28

申请号：US16631499

申请日：2018-07-17

申请人： Cryostar SAS

发明人： Philippe Heisch

IPC分类号： F17C6/00 ,  F17C5/02 ,  F17C13/00

摘要： A method for transferring cryogenic fluid from a storage tank (2; 12; 16) to a receiver (6; 8; 10; 14; 16; 18) like a receiving tank or to an application device, according to the invention comprises the steps of: a—pumping cryogenic liquid from the storage tank (2; 12; 16), b—vaporising at least partially the pumped cryogenic liquid, c—pressurising the storage tank (2; 12; 16) with the vaporised cryogenic liquid, and d—transferring cryogenic fluid to the receiver (6; 8; 10; 14; 16; 18) with cryogenic fluid from the storage tank (2; 12; 16) through a feed line (4) between the storage tank (2; 12; 16) and the receiver (6; 8; 10; 14; 16; 18).

公开(公告)号：US20210190084A1

公开(公告)日：2021-06-24

申请号：US16757782

申请日：2018-10-11

申请人： Cryostar SAS

发明人： Marina DARRY

IPC分类号： F04D27/02 ,  F04D17/12 ,  F04D29/28

摘要： Method for controlling a compressor comprising a last stage (40) and a compressor load controller (90), a set point outlet pressure corresponding to the consumer needed pressure, being given in the load controller (90) comprising the steps of: a—measuring the temperature at the inlet of the last stage (40), b—measuring the ratio between the outlet and inlet pressure of the last stage (40), c—computing a coefficient (Ψ) based on the value of the inlet temperature (Tin) and on the pressure ratio (Pout/Pin), d—if the coefficient (Ψ) is in a predetermined range, changing the set point outlet pressure by a new greater set point outlet pressure until the coefficient (Ψ) computed with the new set point outlet pressure goes out of the predetermined range, and e—adapting the pressure of the fluid coming out of the compressor in a pressure regulator (100) to the consumer needed pressure.

公开(公告)号：US20210156517A1

公开(公告)日：2021-05-27

申请号：US16633374

申请日：2018-07-26

申请人： Cryostar SAS

发明人： Mathias RAGOT ,  Frederic MARCUCCILLI ,  Fabien FABRE

IPC分类号： F17C5/00

摘要： 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).