Liquid cryogen from a tank having a head space pressure P1 is vaporized with a pressure building vaporizer to gaseous cryogen and the pressure of the gaseous cryogen is built to a pressure P2. The pressurized gaseous cryogen at pressure P2 is expanded across an expander to decrease its pressure and fed to a point of use at an installation including the vaporizer at a pressure P3. P22P3. Energy from the expanded gas may be recovered in the form of mechanical energy, electrical energy.

A method of liquid air energy storage is provided. This method includes liquefying and storing air to form a stored liquid air during a first period of time; during a second period of time, introducing a compressed air stream into a cryogenic system, wherein the cryogenic system comprises at least one cold compressor, and at least one heat exchanger. The method includes producing a first exhaust stream and a second exhaust stream. The method also includes vaporizing at least part of the stored liquid air stream in the heat exchanger, thereby producing a first high pressure compressed air stream, then combining the first high pressure compressed air stream, the first exhaust stream and the second exhaust stream to form a combined exhaust stream, heating the combined exhaust stream, then expanding the heated combined exhaust stream in an expansion turbine to produce power.

A cryogenic fluid transfer device comprising a first tank, a second tank, and a fluid transfer circuit, wherein the first tank comprises a cryogenic fluid distribution tank configured to store a cryogenic fluid in a liquid phase in a lower part thereof and in a gaseous phase in an upper part thereof, wherein the second tank comprises a cryogenic receiving tank configured to house the cryogenic fluid in liquid phase in a lower part thereof and in gaseous phase in an upper part thereof, wherein the fluid transfer circuit is configured to connect the first and second tanks, the fluid transfer circuit comprising a first pipe connecting the upper parts of the first and second tanks and comprising at least one valve, and a second pipe connecting the lower part of the first tank to the second tank that comprises a pump that has an inlet connected to the first tank and an outlet connected to the second tank, wherein: the pump and the at least one valve of the first line are configured so as to ensure a fluidic connection of the upper parts of the first and second tanks by opening the at least one valve during a transfer of the cryogenic fluid in liquid phase from the first tank to the second tank with the pump.

The invention relates to a of processing a liquid natural gas stream at a LNG import terminal. The method comprises operating a vaporization unit obtaining a pressurized vaporized natural gas stream and operating a slushification unit to obtain a slush of liquid and solids and a cooled vapour phase. The method further comprises withdrawing the cooled vapour phase from the slushifier providing a cooled vapour stream and passing the cooled vapour stream to the vaporization unit.

An apparatus and process for dispensing a cryogenic fluid can include an apparatus and process configured for dispensing the cryogenic fluid into a fuel tank. Embodiments can be configured for dispensing of liquid hydrogen into fuel tanks of vehicles, for example. Embodiments can be provided so no pump usage is necessary for filing the fuel tank or substantially filling the fuel tank (e.g., filling the fuel tank to a level of 90% filled or a level of 95% filled, etc.) during the dispensing. This can permit embodiments to avoid cryogenic boil off and fugitive emission losses as well as reducing power consumption, reducing maintenance costs, and permitting dispensing start-up to occur more quickly.

In a method for reheating an atmospheric vaporizer, a cryogenic liquid is vaporized by heat exchange with ambient air in the atmospheric vaporizer and to reheat the vaporizer, a gas is sent thereto at a temperature of at least 0 C., this gas originating from a cryogenic distillation air separation unit.

A system for increasing the efficiency of heating cryogenic fluid flowing in a downstream direction through a fluid conduit includes a heating mechanism, an upstream valve, a downstream valve, and a controller. The heating mechanism heats the cryogenic fluid, resulting in conversion of a portion of the cryogenic fluid into a buoyant flow moving in an upstream direction. The upstream valve is located upstream of the heating mechanism and controls an upstream-valve mass flow rate of the cryogenic fluid. The downstream valve is located downstream of the heating mechanism and controls a downstream-valve mass flow rate of the cryogenic fluid. The controller adjusts the upstream valve to a choked position at which: an upstream-valve non-buoyant mass flow rate substantially matches the downstream-valve mass flow rate, and the upstream valve at least partially blocks the buoyant flow from flowing in the upstream direction past the upstream valve.

A LG module for a marine vessel (1), said LG module (10) comprising a support structure for loading and unloading said LG module (10) onto said marine vessel (1), at least one LG tank (12) and a LG gas processing unit (13) for processing LG to fuel, said fuel fulfilling the requirements of an engine of said marine vessel (1).

A portable gas filling system for transfer of cryogenic fluids to high pressure gas cylinders includes a moveable platform, a cryogenic fluid pump for connection to an off platform cryogenic fluid Dewar, and a vaporizer for connection between the fluid pump and gas cylinders. A vacuum pump is provided for purging of interconnecting system lines and a gas accumulator interconnected to the system lines enables storage of gas to pressurize the Dewar.

A system and method for supplying a backup product in an air separation device, as well as a system and method for supplying a lower-pressure product to a user by means of pressurization of a cryogenic liquid pump during normal operation of an air separation device, i.e., when the cryogenic liquid pump is in the cold standby state. By means of the system and method, a cryogenic liquid product taken from a storage tank is pressurized by the cryogenic liquid pump to produce a lower-pressure product by taking full advantage of the low-speed operation of the cryogenic liquid pump in the cold standby state, and the lower-pressure product is transmitted to product supply lines of a user, to achieve the function of supplying the lower-pressure product to the user. The system and method not only reduce the energy loss of the cryogenic liquid pump in the cold standby state for a long time, but also avoid the bleeding rate of the cryogenic liquid product generated by sending a part of the cryogenic liquid product back to the storage tank, so that the advantage of quickly starting the cryogenic liquid pump from the cold standby state is ensured, and the requirements of the user to the higher-pressure product and the lower-pressure product can be satisfied.