Abstract: A method for producing a liquefied cryogenic fluid such as liquefied natural gas from a gaseous stream of gas that is to be cooled containing at least methane and heavy hydrocarbons containing 6 or more carbon atoms, including the steps of mixing the gaseous stream of gas that is to be cooled with part of the liquefied cryogenic fluid withdrawn from downstream of a liquefier, to form a two-phase stream. In a tank such as a phase separator, separating the two-phase stream into a gaseous first fraction and a liquid second fraction containing the majority of the heavy hydrocarbons, containing 6 or more carbon atoms, of the gaseous stream of gas that is to be cooled. Introducing the gaseous first fraction into the liquefier to produce the liquefied cryogenic fluid.

Abstract: Disclosed is a device for refrigerating or liquefying a fluid such as natural gas or hydrogen, comprising a fluid circuit that is to be cooled and has an upstream end for connection to a source of gaseous fluid as well as a downstream end for connection to a member for collecting the cooled or liquefied fluid, the device comprising a heat exchanger assembly in heat exchange with the fluid circuit to be cooled, the device comprising a refrigerator in heat exchange with at least a portion of the exchanger assembly, the refrigerator being of the type that has a cycle for refrigerating a cycle gas containing at least one of: helium, hydrogen, nitrogen or neon; said refrigerator comprising in series in a cycle circuit: a mechanism for compressing the cycle gas, at least one member for cooling the cycle gas, a mechanism for expanding the cycle gas, and at least one member for reheating the expanded cycle gas, wherein the compression mechanism comprises a plurality of compression stages in series composed of a centr

Abstract: Process and device for producing nitrogen-purified liquid methane from a feed gas stream containing at least 98 mol % of methane and between 0.1 and 2 mol % of nitrogen, in which the feed gas stream is cooled to a temperature of between 110 K and 200 K in a first heat exchanger in countercurrent with a stream of nitrogen vapour to produce a cooled stream, a bath of liquid nitrogen is in heat exchange with the cooled stream via a second heat exchanger through which the cooled stream passes, the liquid nitrogen bath producing nitrogen vapour supplied to the first heat exchanger to produce the cooled stream, the cooled stream leaving the second heat exchanger is introduced into a distillation column with a view to its distillation, and a liquid containing at least 99.5 mol % of methane is withdrawn from the bottom of the distillation column as the final product.

Abstract: Disclosed is a device for refrigerating or liquefying a fluid such as natural gas or hydrogen, comprising a fluid circuit that is to be cooled and has an upstream end for connection to a source of gaseous fluid as well as a downstream end for connection to a member for collecting the cooled or liquefied fluid, the device comprising a heat exchanger assembly in heat exchange with the fluid circuit to be cooled, the device comprising a refrigerator in heat exchange with at least a portion of the exchanger assembly, the refrigerator being of the type that has a cycle for refrigerating a cycle gas containing at least one of: helium, hydrogen, nitrogen or neon; said refrigerator comprising in series in a cycle circuit: a mechanism for compressing the cycle gas, at least one member for cooling the cycle gas, a mechanism for expanding the cycle gas, and at least one member for reheating the expanded cycle gas, wherein the compression mechanism comprises a plurality of compression stages in series composed of a centr

Abstract: Disclosed is a device for refrigerating or liquefying a fluid such as natural gas or hydrogen, comprising a circuit for fluid that is to be cooled and has an upstream end for connection to a source of gaseous fluid and a downstream end for connection to a member for collecting the cooled or liquefied fluid, the device comprising a heat exchanger assembly in heat exchange with the circuit of fluid to be cooled, the device comprising a refrigerator in heat exchange with at least a portion of the heat exchanger assembly, the refrigerator being of the type that has a cycle for refrigerating a cycle gas containing at least one of: helium, hydrogen, nitrogen or neon; said refrigerator comprising, arranged in series in a cycle circuit: a mechanism for compressing the cycle gas, at least one member for coding the cycle gas, a mechanism for expanding the cycle gas, and at least one member for reheating the expanded cycle gas, wherein the compression mechanism comprises a plurality of compression stages in series compo

Abstract: Disclosed is a device for refrigerating or liquefying a fluid such as natural gas or hydrogen, comprising a fluid circuit that is to be cooled and has an upstream end for connection to a source of gaseous fluid as well as a downstream end for connection to a member for collecting the cooled or liquefied fluid, the device comprising a heat exchanger assembly in heat exchange with the fluid circuit to be cooled, the device comprising a refrigerator in heat exchange with at least a portion of the exchanger assembly, the refrigerator being of the type that has a cycle for refrigerating a cycle gas containing at least one of: helium, hydrogen, nitrogen or neon; said refrigerator comprising in series in a cycle circuit: a mechanism for compressing the cycle gas, at least one member for cooling the cycle gas, a mechanism for expanding the cycle gas, and at least one member for reheating the expanded cycle gas, wherein the compression mechanism comprises a plurality of compression stages in series composed of a centr

Abstract: A plant for the production of liquefied methane having, arranged in series, a means for the generation of methane from hydrogen and carbon dioxide, a means for drying the gas mixture produced by the methane generation means, a purification means configured to remove carbon dioxide from the gas mixture dried in the drying means, a liquefier configured to liquefy the methane contained in the gas mixture purified in the purification means, and a liquefied gas storage facility configured to store the methane liquefied by the liquefier.

Abstract: Techniques and systems for prioritizing beacon messages are disclosed. Such a technique can include receiving, at a mobile device, beacon messages from multiple beacon devices over short-range communication links, the beacon devices being within a vicinity of an establishment, the beacon messages being configured to provide content associated with the establishment; determining, at the mobile device, priorities of the beacon messages based on one or more criteria; selecting, at the mobile device, a beacon message of the beacon messages based on the priorities to produce a selected beacon message; and presenting the selected beacon message through the mobile device.

Abstract: Techniques and systems for prioritizing beacon messages are disclosed. Such a technique can include receiving, at a mobile device, beacon messages from multiple beacon devices over short-range communication links, the beacon devices being within a vicinity of an establishment, the beacon messages being configured to provide content associated with the establishment; determining, at the mobile device, priorities of the beacon messages based on one or more criteria; selecting, at the mobile device, a beacon message of the beacon messages based on the priorities to produce a selected beacon message; and presenting the selected beacon message through the mobile device.

Abstract: Techniques and systems for scoring beacon messages and selectively performing mobile device wake-up on a score are disclosed. Such a technique can include receiving, at a mobile device in a first operational state, a beacon message from a beacon device over a short-range communication link; determining a score based on the beacon message and one or more criteria for causing a transition from the first operational state to a second operational state, the second operational state consumes more energy from a battery of the mobile device than the first operational state; determining whether the score exceeds a threshold for causing the transition; if the score does not exceed the threshold, maintaining the mobile device in the first operational state; and if the score exceeds the threshold, transitioning the mobile device to the second operational state and presenting the beacon message through the mobile device in the second operational state.

Abstract: Techniques and systems for prioritizing beacon messages are disclosed. Such a technique can include receiving, at a mobile device, beacon messages from multiple beacon devices over short-range communication links, the beacon devices being within a vicinity of an establishment, the beacon messages being configured to provide content associated with the establishment; determining, at the mobile device, priorities of the beacon messages based on one or more criteria; selecting, at the mobile device, a beacon message of the beacon messages based on the priorities to produce a selected beacon message; and presenting the selected beacon message through the mobile device.

Abstract: Techniques and systems for prioritizing beacon messages are disclosed. Such a technique can include receiving, at a mobile device, beacon messages from multiple beacon devices over short-range communication links, the beacon devices being within a vicinity of an establishment, the beacon messages being configured to provide content associated with the establishment; determining, at the mobile device, priorities of the beacon messages based on one or more criteria; selecting, at the mobile device, a beacon message of the beacon messages based on the priorities to produce a selected beacon message; and presenting the selected beacon message through the mobile device.

Abstract: Techniques and systems for scoring beacon messages and selectively performing mobile device wake-up on a score are disclosed. Such a technique can include receiving, at a mobile device in a first operational state, a beacon message from a beacon device over a short-range communication link; determining a score based on the beacon message and one or more criteria for causing a transition from the first operational state to a second operational state, the second operational state consumes more energy from a battery of the mobile device than the first operational state; determining whether the score exceeds a threshold for causing the transition; if the score does not exceed the threshold, maintaining the mobile device in the first operational state; and if the score exceeds the threshold, transitioning the mobile device to the second operational state and presenting the beacon message through the mobile device in the second operational state.