Method and device for replenishing a supply of cryogenic liquid, notably of liquefied natural gas
AssigneeCryostar SAS
InventorsPhilippe Fauvel, Philippe Heisch
Life of this patent
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Abstract
A method for replenishing the supply of cryogenic liquid from a storage tank (2) includes: pressurizing a container (14) with cryogenic gas at a first pressure, said container having passing through it a first cryogenic fluid flow line referred to as the cold line and a second cryogenic fluid flow line referred to as the hot line, passing cryogenic liquid at a second pressure through the cold line (12), and supplying the container (14) with cryogenic gas at least partially from cryogenic liquid pumped from the storage tank (2) and vaporized. A device is also provided for the method hereinabove.
Claims18
A method of replenishing cryogenic liquid from a storage tank (2) comprising:
- pressurizing a container (14) with cryogenic gas at a first pressure, said container being traversed by a first cryogenic fluid circulation line, the first cryogenic fluid circulation line being a cold line (12) coming from the storage tank, wherein said storage tank contains cryogenic liquid;
- passing a first portion of cryogenic liquid from said storage tank through the cold line at a second pressure;
- and
- supplying the first portion of cryogenic liquid downstream from the cold line for replenishing a tank;
- wherein pressurizing of the container is performed by supplying the container with a vaporized cryogenic liquid, wherein the vaporized cryogenic liquid is at least partially obtained from a second portion of cryogenic liquid, pumped from the storage tank, which is vaporized to form said vaporized cryogenic liquid before being supplied to the container.
A device for replenishing of cryogenic liquid, comprising:
- a storage tank (2) for cryogenic liquid;
- a first line (6) for withdrawing a first portion of cryogenic liquid from the storage tank;
- a pump (4) for pressurizing the first portion of cryogenic liquid removed from the storage tank to form pressurized cryogenic liquid;
- a cold line (12), in fluid communication with said storage tank (2) via said pump (4) and said first line (6), wherein said cold line (12) traverses a pressurized container (14) whereby a first portion of the pressurized cryogenic liquid flows through said cold line (12), and said cold line (12) having a cryogenic liquid outlet in fluid communication with another tank which is to be filled;
- an evaporator (20) also in fluid communication with said storage tank (2) via said pump (4) and said first line (6) for vaporizing a second portion of the pressurized cryogenic liquid to form pressurized cryogenic gas;
- and
- a second line for feeding the pressurized cryogenic gas from the evaporator (20) to the pressurized container (14).
A method of replenishing a tank with cryogenic liquid from a storage tank comprising:
- withdrawing a stream of cryogenic liquid from said storage tank and increasing the pressure of the stream of cryogenic liquid withdrawn from said storage tank using a pump to form a stream of pressurized cryogenic liquid,
- introducing a first substream of said stream of pressurized cryogenic liquid into a cryogenic fluid circulation line, wherein said cryogenic fluid circulation line traverses a container pressurized with vaporized cryogenic gas,
- introducing a second substream of said stream of pressurized cryogenic liquid into an evaporator wherein said second substream is vaporized to form the vaporized cryogenic gas,
- introducing the vaporized cryogenic gas into said container to thereby pressurize said container with the vaporized cryogenic gas,
- introducing the first substream of said stream of pressurized cryogenic liquid from said cryogenic fluid circulation line into a tank needing is to be replenished.
A device for replenishing a tank with cryogenic liquid from a storage tank, said device comprising:
- a storage tank for cryogenic liquid;
- a pressurized container traversed by a first line, said first line being in fluid communication with the storage tank and in fluid communication with said tank which is to be replenished;
- a line for withdrawing a stream of cryogenic liquid from said storage tank and a pump for increasing the pressure of the withdrawn stream of cryogenic liquid using to form a stream of pressurized cryogenic liquid,
- a line for introducing a first substream of the stream of pressurized cryogenic liquid into the first line,
- a line for introducing a second substream of said stream of pressurized cryogenic liquid into an evaporator wherein said second substream is vaporized to form vaporized cryogenic gas,
- a line for introducing the vaporized cryogenic gas into said container to thereby pressurize said pressurized container with vaporized cryogenic gas, and
- a line for introducing the first substream of said stream of pressurized cryogenic liquid from said first line into a tank needing to be replenished.
Dependencies are inferred from the claim text.