Port Arthur LNG (PALNG) has received a favorable environmental assessment from the US Federal Energy Regulatory Commission (FERC) for its Port Arthur LNG Expansion Project, located in Jefferson County, Texas. The original PALNG Liquefaction Terminal, authorized in April 2019, allowed PALNG to construct and operate natural gas liquefaction facilities and a liquefied natural gas (LNG) export facility. This included two liquefaction trains (Trains 1 and 2), each with its own gas treatment facilities and capacity to produce 6.73 MTPA under optimal conditions; condensate and refrigerant storage areas; a marine facility, including two LNG berths, with two LNG loading arms and two hybrid arms; condensate loading and refrigerant unloading truck facilities; a construction and materials loading/unloading dock; three full-containment LNG storage tanks; and the capability of self-generation of the electrical power required for the liquefaction project by utilizing eight of nine combustion turbine generators.
The Port Arthur LNG Expansion Project will include two additional liquefaction trains (Trains 3 and 4), each with its own gas treatment facilities and each capable of producing 6.73 MTPA under optimal conditions, along with associated utilities and infrastructure related to Trains 3 and 4. The project also includes one new boil-off gas (BOG) compressor unit to compress BOG and deliver as fuel to the gas turbines, two new utility and instrument air compressor packages to deliver air to two new air drier packages, and one new 3.675 MW capacity diesel-powered standby generator.
All four trains in the project include one propane and one mixed refrigerant refrigeration GE Frame 7EA compressor turbine. Eight total refrigeration compressor turbines will be used at the facility, with two turbines per liquefaction train. Each of the trains will be equipped with an acid gas removal unit (AGRU) that utilizes an amine treatment process for acid gas removal. Emissions from the AGRUs will be controlled using thermal oxidizers. LNG will be stored in three storage tanks and loaded onto marine vessels for export at the marine berthing area.
There are nine GE PGT25+G4 combustion turbine generators for self-generation of electrical power. Each combustion turbine generator operates in simple cycle mode and produce 34 MW of electricity. The combustion turbines fire solely on natural gas.