Our LNG plant is located in the Kwinana Industrial area, south of Perth.
The LNG plant design is based on well proven concepts and equipment, using Linde’s process technology with a closed single mixed refrigerant cycle selected as a liquefaction process.
The LNG plant is designed for the production of 250 tonnes per day.
The feed gas is delivered to the Kwinana site from the North West gas fields via the Dampier to Bunbury Natural Gas Pipeline. The feed gas first passes through the LPG extraction plant where propane and butane are removed from the gas stream. The lean residue gas stream then arrives at the LNG plant for liquefaction.
The LNG plant includes a 4000 m3 LNG storage tank and LNG truck loading facility.
The LNG plant consists of the following key components:
- CO2 Removal: The feed gas passes through an Amine wash column to remove CO2. An Amine stripper column removes the CO2 from the Amine (Methyl diethanolamine) allowing it to be recycled.
- Dehydration: Drier columns remove moisture from the feed gas after the Amine wash using an Glycol absorption method.
- Liquefaction: Liquefaction heat exchangers contained in an insulated cold box liquefy the treated feed gas. The natural gas is liquefied by using a number of mixed refrigerant streams at different temperatures, pressures and compositions.
- Refrigeration System: A two stage compressor system driven by a gas turbine is used to compress the mixed refrigerant streams required for liquefaction. The mixed refrigerant streams are made up of methane, ethane, butane and nitrogen.
- LNG Storage: The LNG product is stored in a 4,000 m3 sphere. The LNG sphere is surrounded by a bund designed to contain the full contents of the storage tank.
- LNG Loading System: The LNG product is loaded to road tankers for transportation and sale.