Prof. Anastas' group at Yale is hosting a seminar to be given by the industry winners of the 2012 Presidential Green Chemistry Challenge Award.  Connecticut-based company Cytec to present.

Free and open to the public.

The seminar will be on Monday, October 22nd at 4 pm in the Mason Laboratory lecture hall (Mason Lab 211, 9 Hillhouse Avenue, New Haven).

The abstract is below. 

MAX HT(r) BAYER SODALITE SCALE INHIBITOR: A GREEN SOLUTION TO ENERGY CONSUMPTION FOR THE BAYER PROCESS

Morris Lewellyn, Alan Rothenberg, Amy Essenfeld Cytec Industries Inc., 1937 West Main Street, Stamford, CT 06904

MAX HT(r) Bayer Sodalite Scale Inhibitor was developed to reduce or eliminate scaling from the evaporator and digester heaters in the Bayer process (used to convert bauxite ore to alumina, the primary raw material for aluminum).  The product consists of a polymer containing silane functional groups that inhibit crystal growth by incorporation into the crystal or adsorption onto its surface.  There are about 73 operating Bayer process plants worldwide with annual capacities of 0.2-6 million tons of alumina, most plants are in the 1.5-3 million ton range.

  This product has been successfully applied to 20 Bayer process plants, resulting in the significant benefits of increased heat transfer, reduced energy consumption and reduced acid waste from reduced heater cleanings.  Based on trial data from a number of plants, the estimated annual savings per ton of alumina produced are 0.25-1.25 million BTU energy, resulting 29-202 lbs reduction in CO2 emissions and 2-6 lbs reduction in acid waste.  When these savings are applied to the total alumina production from the 20 plants, this leads to an estimated realized annual savings of 10.5-52.7 trillion BTU energy, 1.2-8.5 billion lbs CO2 emissions, and 84-255 million lbs of acid waste reduction.  For this reason, MAX HT was awarded the 2012 EPA Presidential Green Chemistry Challenge Award.