Description

Desalination Evaporator Antiscalant LD*9 Characteristic Maximizes thermal efficiency of Multiple Effect Distillation systems Provides excellent CACO3 inhibition Reduces or eliminates acid cleaning Description and Use LD*9 is a blend of deposit control agents designed for use in desalination evaporators. Low doses of this product are effective in preventing inorganic scales. LD*9 functions as a crystal inhibitor which effectively increases the solubility of dissolved salts. Any crystals that form are modified and dispersed so that adherent scales cannot form on heat transfer surfaces in the evaporator. Typical Applications LD*9 was specifically developed for Multiple Effect Distillation (MED) plants. While LD *9 is effective in dispersing a variety of scale-forming compounds. It has been shown to be far more effective in controlling CaCO3 than traditional antiscalants, including those based on polymaleic acid polymers and copolymers. LD*9 is stable in chlorinated systems. Treatment and Feeding Requirements For most MED/MSF systems the dos-age is in the range of 3 to 6 mg/L. In MED systems, LD*9 should be fed to the feedwater line, downstream of the condenser outlet. In MSF systems, LD*9 should be fed to the feedwater line, upstream of the heat recovery section. Continuous feed is recommended for optimum performance.