Abstract
The Royal Commission of Al Jubail and Yanbu, Kingdom of Saudi Arabia, commissioned Mitsui Engineering and Shipbuilding to design and build dual high temperature MSF evaporators to provide fresh water to the industrial city of Al Jubail. An antiscalant without polymalic acid, which is intolerant of low ferric ion concentrations, has been used successfully since startup over three years ago. Unit operating data is discussed which establishes the trouble free high temperature operation possible with antiscalant dosing. Preventive maintenance measures combined with proper system component design and choices of materials of construction have resulted in minimal corrosion and excellent performance while providing fresh water on an “as needed” basis.
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