It shipped ‘mid-capacity MED technology-based fresh water evaporators to Saudi Arabia.
Doosan Heavy Industries and Construction (CEO: Pak Ji-won) takes the lead in the world desalination technology market.
Doosan Heavy Industries and Construction said on July 30 it successfully shipped on July 29 two fresh water evaporators at its wharf in Changwon to be installed at Marafiq’s seawater desalination plant in Yanbu, Saudi Arabia.
The fresh water evaporator was built adopting the multi-effect distillation (MED) technology, one of three major fresh water processing technologies. Its daily fresh water production capacity is 55,000 tons that can be used by 150,000 persons simultaneously.
The MED is a desalination technology that can vaporize seawater and condense to fresh water by spraying seawater to surface of tubes when vapor is passing through a large number of tubes. Compared to other methods, it costs less for installation and provides higher efficiency.
Boasting its cutting-edge seawater desalination technology, Doosan Heavy Industries and Construction received orders for MED technology-based fresh water evaporators from Saudi Arabia last year. The company already demonstrated world top level technologies in multi-stage flash (MSF) and reverse osmosis (RO)-mode desalination.
The company developed the first mid-capacity MED technology-based evaporator.
The new fresh water evaporator is as large as 22 meters in width, 18 meters in height and 62 meters in length with weight of 1,800 tons. And its strength is intensified and resistance to corrosion is improved by using a special material called ‘Duplex’.
According to the company, it installed about 350,000 tubes in one evaporator each. Tubes used for evaporating seawater are enhanced with quality reliability through rigorous water pressure tests.
Having been completely assembled by adopting ‘one module’ engineering method, the evaporators will be delivered to Saudi Arabia through marine transport for about one month.
The seawater desalination plant in Yanbu, Saudi Arabia, a place 350km away from Jeddah to Northwest, is being constructed by Doosan Heavy Industries and Construction on the EPC basis, comprising design, production of equipment and materials, installation and test operation.
Construction of the plant is scheduled to be completed by April 2013.
In an international competitive bidding, Doosan Heavy Industries and Construction won in September 2011 the order for Marafiq’s seawater desalination plant in Yanbu.