Patent ID: 8329614
Filing Date: 2012-12-11
Classification: B01D,B01J,C04B,Y02W

Abstract:
1. A method of making a composition of matter for removing mercury from a flue gas stream at elevated temperature, comprising (a) forming a mixture of carbonaceous feedstock, halide salt, and one or more compounds of formula Ia and/or Ib wherein each occurrence of M, even in the same molecule, is silicon, aluminum or phosphorus, each occurrence of Alk, even in the same molecule, is sodium or potassium, and a, n and p are positive integers chosen so that the compound of formula Ib has no net charge, and (b) subjecting the mixture formed in step (a) to conditions effective to form an adsorbent composition comprising an activated carbon having a halide salt dispersed on the surface thereof, said conditions including the application of heat effective to promote the binding of multivalent cations in said adsorbent composition with said one or more compounds of formula Ia and/or Ib, so that said composition of matter after its use to adsorb mercury from a flue gas stream at elevated temperature has a Foaming Index less than 45.