34b - lng cryogenic pumps

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The World of Energy

34.2. LNG Cryogenic Pumps

Chapter 34 LNG Storage & Loading System

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Canned & Submerged LNG Pumps

Diagram of submerged motor, retractable (removable) type pumpused in onshore storage tanks.

Multistage vessel-mounted pump design for vaporizer-feed duty.

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Suction Vessel Mounted LNG Pumps

Ex-Tank Submerged Motor Pumps

This type of pump is typically located outside of a land based main storage tank inside of a vessel that contains the fluid to be pumped during operations. It can also be used in miscellaneous process applications, e.g., product transfer or controlling the liquid level in a process vessel.

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Removable Type LNG Pumps

In-Tank Submerged Motor Pumps

Carter provides a patented removable pumping system that is accepted as the standard of the industry for in-tank pump installations.

This system permits removal of product over the top of the tank and eliminates the need for bottom or side tank penetrations below the liquid level.

Carters's concept incorporates a submerged pump that can be safely removed from a full or empty tank, even when the tank contains a boiling liquid, whose vapors are potentially hazardous.

The Carter removable pumping system is available in single or multi-stage configurations.

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Sulzer JVRV LNG Pumps

The JVCR has a number of key advantages over other designs;

Ease of maintenance

Accessibility

Oil lubricated thrust bearing

No inducer required

High pump & motor efficiency

Uses cryogenic materials

Proven reliability record

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Hitachi LNG Pumps

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Tokyo Boeki LNG Pump

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Shipboard Fixed LNG Pumps

The shipboard fixed pump is used primarily to discharge the cargo from the hold of an ocean going liquid gas carrier.

Carter provides the most compact and light weight pumping system available.

The simple, compact pump is easy to maintain providing ship owners and operators with the lowest overall maintainence cost over the life of the ship.

Carter shipboard pumps are still in operation after thirty years.