Performance test of a new antiscalant "AQUAKREEN KC-550" under high temperature conditions at the MSF desalination plant in Dubai

• Main Authors: Fukumoto, Y, Isobe, K, Moriyama, N, Pujadas, F
• Format: eBook
• Language: English
• Published: 01.01.1991
• Subjects: Freshwater; Marine
• ISSN: 0011-9164

Polycarboxyl type antiscalants in general have a tendency to become less effective in the presence of multi-valent metal ions such as Ca super(++) and Mg super(++) in sea water. However, Kao's new antiscalant "AQUAKREEN KC-550" improved by the copolymerization technology, has much higher stability against such multi-valance ions. AQUAKREEN KC-550 was tested by Dubai Electricity Company of the unit No.3 desalination plant at Jebel Ali "D" station under the dosing rate of 2 ppm at the brine top temperature of 105 degree C for a period of 5 months, with caution steps taken to set the optimum dosing rate beforehand. Through this performance test, it was proved that "AQUAKREEN KC-550" could successfully keep very stable all operation parameters such as the Heat Transfer Coefficients of both the brine heater and the heat recovery section and the Gained Output Ratio.