Abstract: Some embodiments are directed to a module for depressurisation and storage of a portion of a gas layer coming from at least one cryogenic tank. Some other embodiments are directed to a system using such a module.

Abstract: The device (100) for compressing a low-pressure gas comprises: at least one compression chamber (105) comprising: an inlet (110) for low-pressure gas, an outlet (115) for high-pressure gas, an inlet (120) for fluid, an outlet (125) for fluid, and a piston (130) located between the gas inlet and outlet, on the one hand, and the fluid inlet and outlet, on the other hand; a fluid movement means (135) positioned on a fluid circuit connecting a fluid outlet and a fluid inlet of a compression chamber; and a means (165) for measuring the gas pressure inside the compression chamber and a circuit (160) to recirculate gas to the inlet of a compression chamber when the measured pressure is less than a predefined limit value.

Abstract: The device (100) for providing liquefied natural gas, referred to as LNG, comprises: an evaporation gas buffer tank (105) comprising an inlet (110) for evaporation gas suitable for receiving evaporation gas from a third-party device, a member (115) for transferring evaporation gas from the buffer tank to an LNG storage capacity (120), downstream from the transfer member (120), a compressor (140) for compressing the evaporation gas, an evaporation gas transfer pipe (125) for transferring evaporation gas from the transfer member to the storage capacity, the LNG storage capacity, an LNG transfer pipe (130) for transferring LNG from the storage capacity to a third-party device and a heat exchanger (135) for exchanging heat between evaporation gas passing through the evaporation gas transfer pipe and LNG passing through the LNG transfer pipe configured to liquefy or cool the evaporation gas.

Abstract: The device (600) for liquefying a natural gas comprises: —a first centrifugal compressor (605), —a fractionating means (110), —a second centrifugal compressor (610), —a first heat exchange body (115), —a second heat exchange body (120) and —a return conduit (125) leading to the first compressor, —upstream of an inlet (116) in the first exchange body, a third heat exchange body (420), —a third centrifugal compressor (620), the first and third centrifugal compressors being actuated by a single common turbine (630), —a casing (635) common to the first compressor and the third compressor, —a cooling means (430) and —a transfer conduit (435) leading to the third exchange body.

Abstract: The device (100) for liquefying a natural gas comprises: a compressor (105) for a first vaporized coolant chemical mixture, a means (110) for fractionating the compressed mixture into a heavy fraction and a light fraction, a first heat exchange body (115) for heat exchange between the heavy fraction of the first mixture and the natural gas in order to cool at least the natural gas, a second heat exchange body (120) for heat exchange between the light fraction of the first mixture and the cooled natural gas in the first exchange body in order to liquefy the natural gas, and a return pipe (125) for return of the first vaporized coolant mixture in the heat exchange body to the compressor (105), upstream from an inlet (116) for the natural gas in the first exchange body (115) or downstream from an outlet (121) of liquefied natural gas from the second exchange body (120), a third heat exchange body (130, 135) for heat exchange between the natural gas and a second coolant chemical compound, and a means (140, 145

Abstract: The device (400) for liquefying a natural gas comprises: a compressor (105) of a first vaporized coolant chemical mixture, a means (110) for fractionating the compressed mixture into a heavy fraction and a light fraction, —a first body (115) for exchanging heat between the heavy fraction of the first mixture and the natural gas to cool at least the natural gas, a second body (120) for exchanging heat between the light fraction of the first mixture and the natural gas cooled in the first exchange body to liquefy the natural gas, —a conduit (125) for returning the first vaporized coolant mixture in the heat exchange bodies to the compressor, —a regulator (405) for the liquefied natural gas, a collector (410) for the evaporation gas produced during the expansion of the gas in the regulator, —a conduit (415) for injecting the evaporation gas at the inlet of the second exchange body, upstream of an inlet (116) for the natural gas in the first exchange body (115), a third body (420) for exchanging heat between the

Abstract: Some embodiments are directed to a module for depressurisation and storage of a portion of a gas coming from at least one cryogenic tank. Some other embodiments are directed to a system using such a module.