# US 11,906,111 B2 · Delivery tank with pressure reduction, saturation and desaturation features

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- Number: US 11,906,111 B2
- Document ID: US11906111B2
- Status: Granted
- Kind: B2
- Application number: 17/186,069
- Filed: 2021-02-26
- Published: 2021-09-02
- Granted: 2024-02-20
- Earliest claimed: 2020-03-02
- Assignees: Chart Inc.
- Applicants: Chart Inc.
- Inventors: Radek Rosenbaum; Jan Kubica
- Web page: https://patentgrep.com/patent/US11906111B2

## CPC

- F17C 7/02: Discharging liquefied gases
- F17C 13/00: Details of vessels or of the filling or discharging of vessels
- F17C 1/12: with provision for thermal insulation ({F17C1/14, F17C1/16 take precedence}; thermal insulation in general F16L59/00)
- F17C 2201/0109: with exteriorly curved end-piece
- F17C 2201/0119: with flat end-piece
- F17C 2201/032: with substantially vertical main axis
- F17C 2201/035: with substantially horizontal main axis
- F17C 2201/054: medium (>1 m3)
- F17C 2203/032: Multi-sheet layers
- F17C 2203/0391: by vacuum
- F17C 2203/0619: with two layers
- F17C 2203/0629: Two walls
- F17C 2203/0643: Stainless steels
- F17C 2203/0648: Alloys or compositions of metals
- F17C 2205/0134: characterised by the presence of fluid connection between vessels
- F17C 2205/0323: Valves
- F17C 2205/0352: Pipes
- F17C 2205/0364: flexible or articulated, e.g. a hose
- F17C 2221/014: Nitrogen
- F17C 2221/033: Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
- F17C 2223/0161: cryogenic, e.g. LNG, GNL, PLNG
- F17C 2223/033: Small pressure, e.g. for liquefied gas
- F17C 2227/0306: using the same fluid
- F17C 2227/0309: using another fluid
- F17C 2227/0339: using the same fluid
- F17C 2227/0341: using another fluid
- F17C 2227/0372: in the gas
- F17C 2227/0374: in the liquid
- F17C 2250/0408: Level of content in the vessel
- F17C 2250/043: Pressure
- F17C 2250/0434: Pressure difference
- F17C 2250/0439: Temperature
- Y02E 60/32: Hydrogen storage
- F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A cryogenic delivery tank includes a vessel having inner and outer shells and an interior that may contain a cryogenic liquid with a headspace above. A transfer pipe passes through the interior of the vessel and includes a head space coil positioned within an upper portion of the interior and a liquid side coil positioned in the lower portion of the interior. The transfer pipe has a first port adjacent to the head space coil and a second port adjacent to the liquid side coil. The first and second ports of the transfer pipe are configured to be removably attached to a second tank.

## Claims

### Claim 1

A cryogenic liquid delivery tank system, comprising:
a vessel comprising an inner shell and an outer shell wherein the inner shell defines an interior configured to contain a first cryogenic liquid with a first cryogenic liquid headspace above the first cryogenic liquid;
a transfer pipe passing through the interior of the vessel, said transfer pipe including a head space coil positioned within an upper portion of the interior and a liquid side coil positioned in a lower portion of the interior;
the transfer pipe having a first port adjacent to the head space coil and a second port adjacent to the liquid side coil; and
a second cryogenic tank including:
a second tank interior configured to hold a second cryogenic liquid with a second head space above the second cryogenic liquid,
a gas outlet pipe in fluid communication with a top portion of the second tank interior and configured to removably connect directly to the second port so that a second gas from the second head space flows through the liquid side coil of the transfer pipe prior to flowing through the head space coil of the transfer pipe, and
a liquid outlet pipe in fluid communication with a bottom portion of the second tank interior and configured to removably and alternately connect to the first port and directly to the second port so that the second cryogenic liquid flows through the liquid side coil of the transfer pipe prior to flowing through the head space coil of the transfer pipe when the liquid outlet pipe is connected to the second port.

### Claim 2 (depends on 1)

The cryogenic liquid delivery system of claim 1, wherein the second cryogenic liquid is the same as the first cryogenic liquid.

### Claim 3 (depends on 1)

The cryogenic liquid delivery system of claim 1, wherein the second cryogenic liquid is different from the first cryogenic liquid.

### Claim 4 (depends on 1)

The cryogenic liquid delivery tank system of claim 1, wherein the first cryogenic liquid is liquefied natural gas.

### Claim 5 (depends on 1)

The cryogenic liquid delivery tank system of claim 1, wherein the second cryogenic liquid is liquid nitrogen and the second gas is nitrogen.

### Claim 6 (depends on 1)

The cryogenic liquid delivery tank system of claim 1, further comprising one or more flexible hoses configured to removably connect the gas outlet pipe to the second port and the liquid outlet pipe to the first and/or second ports.

### Claim 7 (depends on 1)

The cryogenic liquid delivery tank system of claim 1, further comprising a plurality of lines including one or more valves configured to selectively connect the gas outlet pipe to the second port and the liquid outlet pipe to the first and/or second ports.

### Claim 8

A method of adjusting a pressure of a first cryogenic liquid stored in a delivery tank comprising the steps of:
providing a transfer pipe in the interior of the vessel, said transfer pipe including a head space coil positioned within an upper portion of the interior and a liquid side coil positioned in a lower portion of the interior;
directing a second cryogenic liquid from a second tank first through the headspace coil and then through the liquid side coil;
directing cryogenic liquid from the second tank first through the liquid side coil and then through the headspace coil;
directing a second gas from the second tank first through the liquid side coil and then through the headspace coil so that an exhaust gas is produced; and
venting the exhaust gas.

### Claim 9 (depends on 8)

The method of claim 8, wherein the first cryogenic liquid is different from the second cryogenic liquid.

### Claim 10 (depends on 8)

The method of claim 8, wherein the first cryogenic liquid is the same as the second cryogenic liquid.

### Claim 11 (depends on 8)

The method of claim 8, wherein the pressure of the first cryogenic liquid is reduced.

### Claim 12 (depends on 8)

The method of claim 8, wherein the saturation pressure of the first cryogenic liquid is increased.

### Claim 13 (depends on 8)

The method of claim 8, wherein the saturation pressure of the second cryogenic liquid is decreased.