Plaquemines LNG 20 MTPA Export Facility

Plaquemines LNG 20 MTPA Export Facility

Venture Global has set out to disrupt the LNG industry paradigm by taking a bottom-up approach to capital cost. Our customers will benefit from our savings with a low-cost, reliable supply of LNG.

Overview

Plaquemines LNG key project features include a liquefaction plant consisting of 20 liquefaction blocks developed in two phases,  with each block having a nameplate capacity of 1 million metric tonnes per annum (MTPA) and consisting of two SMR liquefaction units and ancillary support facilities. It will also contain four 200,000-cubic-meter LNG above-ground storage tanks with cryogenic pipeline connections to the liquefaction plant and berthing docks.

Additionally, the facility will include up to three marine loading berths for ocean-going ships capable of receiving LNG carriers up to 185,000 cubic meters in capacity. It will also include a utility dock on the Mississippi River to handle waterborne deliveries of equipment and material during both construction and project operations.

Plaquemines LNG will use a combined-cycle gas-turbine (CCGT) power plant with a generating capacity of approximately 720 megawatts (MW) for phase one. The power plant will be expanded in phase two to include an additional 720 MW of generating capacity.

Modular Design

The modular design enables a broad range of equipment suppliers, including compressors, valve piping commodities, etc. This design also means:

  • Our LNG liquefaction “blocks” consist of one unit of heavy hydrocarbon removal and two units of natural gas liquefaction.
  • Three integrated pre-treatment units consisting of 50 percent plant capacity each will feed the ten “blocks.”
  • Our technology choice is an improved single mixed refrigerant (SMR) process with an integrated warm end refrigeration loop provided by liquids derived at the compressor inter-stage reducing compressor power.
  • This process uses three separate cooling levels to produce sub-cooled LNG. The three levels of refrigeration also simplify the compression system by eliminating refrigerant pumps and control valves. The result is lower power consumption, which reduces the cost for the motor and other electrical systems.
  • Three refrigeration loops keep the heavier refrigerant components out of the cold end of the process reducing freezing.
  • LNG facilities using the modular concept of .5 MTPA can build plant capacity in incremental steps if desired.
  • Electric motors sized for .5 MTPA are easier to start than larger motors.
  • The modular design and skid mounted delivery system contribute to our cost reductions.

Combined-Cycle Gas-Turbine Power Plant

Per phase, each 720 MW inside-the-fence CCGT power plant will use feed-gas, together with boil off gas, to produce the power required to drive the electric motors of the liquefiers. Our “5 on 2” gas turbine to steam turbine configuration allows for significant flexibility for maintenance or down times, allowing the facility to have extremely high availability for production.

Lateral Pipelines

The project will be interconnected via two lateral pipelines reaching to three existing interstate and intrastate pipelines.