Flowserve Corporation’s Calder Dual Work Exchanger Energy-Recovery (Dweer) units have been requisitioned for the Salalah Independent Water and Power Plant (Salalah IWPP) in Oman to recover energy from the high-pressure brine stream in the seawater reverse-osmosis (SWRO) process.
The order was placed by Hydrochem (S) Pte Ltd, a wholly-owned subsidiary of Hyflux Ltd.
The Salalah IWPP, which consists of a 445-megawatt gas-fired power plant and a 68,000 cubic-meter-per-day (17.96 million-gallons-per-day) reverse-osmosis seawater desalination plant, is expected to begin full commercial operation in the first half of 2012.
“Flowserve was selected for this project because of the energy efficiency of the Calder Dweer technology,” said Tom Ferguson, president, Flow Solutions Group. “This Flowserve technology can help reduce energy consumption and emissions, allowing our customers to efficiently meet global demand for fresh water.”
Flowserve Calder products and technologies specialise in the design, engineering and supply of energy-recovery equipment and related proprietary technologies for the reverse-osmosis process used in desalination plants around the world. Calder energy-recovery technology is designed to capture and reuse waste energy in the desalination process, lowering net energy consumption and improving overall process efficiency.
Working of the system
The Dweer system uses a piston double-chamber reciprocating hydraulically driven pump and a patented valve system in a high-pressure batch process with large pressure vessels, similar to a locomotive, to capture and transfer the energy lost in the membrane reject stream.
The Hyflux order is the second major order for Flowserve Calder in recent months. On May 11, Flowserve announced an order for Calder Dweer units for the Sorek seawater desalination plant.
Hyflux is a leading fully integrated water solutions company with operations and projects in Singapore, Southeast Asia, China, India and the Middle East and North Africa region.
Flowserve Corp is one of the world’s leading providers of fluid motion and control products and services and operates in more than 55 countries.
