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QUA to supply technology for Sabine Pass LNG terminal

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Hydrocarbon Engineering,

QUA® has been awarded a contract to supply its FEDI® fractional electrodeionisation technology for the RO permeate polishing demineralising process to support Cheniere Energy's addition of liquefaction services to its Sabine Pass LNG terminal.

This project is the third phase of expansion to supply water to the facility's liquefaction operations and will add an additional 30% capacity to the water plant. FEDI was also used in the previous two phases. This brings the total water flow rate at this plant to 4185 gpm (951 m3/hr) making it one of the largest electrodeionisation (EDI) systems installed in the world.

The water is used for injection for compressor turbines for methane, propane and ethylene; wash water for gas turbines and other utility make up uses. The feed water to the terminal is from a local utility, and the water requires further treatment to produce high purity water with low conductivity and silica content for the plant's uses.

"This has been an exciting project for us and is a great showcase for the dual voltage fractional electrodeionisation process. It really demonstrates on a large scale how well the technology can perform downstream of a single pass RO system," said Fred Wiesler, QUA's Director of Sales and Marketing.

With patented dual voltage technology, QUA's FEDI technology represents the next generation of electrodeionisation technology for the production of high purity water. Developed taking into account the limitations of conventional EDI, the FEDI process improves the reliability of EDI for the production of high purity water.

Adapted from press release by Francesca Brindle

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