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MAX HT™ 500: A SECOND GENERATION SODALITE SCALE INHIBITOR

Lewellyn M, Patel A, Spitzer D, Franz C, Ballentine F, Dai Q, Chamberlain O, Kula F, Chen H

Since its introduction to the Bayer industry in 2004, MAX HT™ Sodalite Scale Inhibitor has been run on a number of plants across the globe under a variety of operating conditions and has demonstrated that it can completely eliminate sodalite scale. However, the first generation product readily adsorbs to solids found in some liquors, so that even at low levels of solids (50-200 ppm) the dosage requirement can be adversely affected. Examples of low levels of solids that can be found in some liquors include sand filter backwash, precipitated oxalate, and ESP dust. MAX HT™ 500 Sodalite Scale Inhibitor was developed to be more tolerant to these low levels of solids, providing the elimination of sodalite scale at dosages similar to that observed with the first generation product in liquors containing no solids. This paper will discuss the plant experience with both products.