LNG System Pressure Build Up Unit

1. Highly compact skid-mounted structure

2. Highly integration of prevailing internet of objects technology (IOT)

3. Short time of construction and high efficiency

4. Furthermore, the LNG plants are featured by small land occupation, environmental friendly and low energy consumption.

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Product Details

A typical LNG fuel gas supply system has one or more cryogenic LNG storage tanks. The LNG is kept at a temperature of -162°C. Two important components in the system are the vaporizer, gas heater and the Pressure Build Up unit (PBU). The PBU keeps the tank at the correct pressure, and the gas heater heats the gas to the right temperature for delivery to the engines. The tank is filled with LNG from the bunkering station.

The LNG tank is never entirely empty, nor is it truly full. When the LNG fuel system isn’t in use, the temperature will slowly rise under the influence of the temperature outside. Because the tank is vacuum insulated, the LNG can be held in the tank for about 15 days. Using the gas as fuel for the engines lowers the pressure. Whenever the pressure drops too far, a small amount of LNG is sent to the pressure build up unit. This vaporizes and returns the gas to the top of the tank, bringing the pressure in the tank back up. The Pressure Build Up Unit is automatically triggered by the alarm, monitoring and process control (AMP) system, ensuring that the tank maintains the correct pressure at all times.

1. Highly compact skid-mounted structure: total 3 parts including

1) Metering, pressure control & purification system package;

2) Liquefaction system;

3) Public utility and accessories. After all packages reach the job site, the client only needs to connect the flanges, pipelines, etc. Once the LNG plants set on the foundation skid, which greatly reduces workload on site.

2. Highly integration of prevailing internet of objects technology (IOT): DCS self-control system;

3. Short time of construction and high efficiency: 3-6 months for manufacturing, while only 15 days for installation and commissioning.

4. Furthermore, the LNG plants are featured by small land occupation, environmental friendly and low energy consumption. Hence the whole LNG plant can be installed on a field of 60*60m, the main equipment/device is only about 16.5*16.5m. During very short period, the whole plant can be easily moved from one to another

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Pressure Build Up