Patent ID: 7923397
Filing Date: 2011-04-12
Classification: B01D,B01J

Abstract:
1. A sorbent for the dry cleaning of waste gases charged with mercury, comprising at least one adsorptively acting constituent in the form of loose particles of activated carbons, activated cokes and zeolites, said particles having pores including walls, and a chemically active constituent comprising particles of elementary sulfur, wherein the constituents are in the form of a homogeneous mixture of loose particles at ambient temperature, wherein the sulfur particles reside at the outer surface of the adsorptively acting constituent particles and said absorptively acting constituent is not impregnated with sulfur and said sulfur does not reside on the walls of said pores wherein said pores are not sealed off by said sulfur, wherein the ratio of the average grain sizes (d 50 median values) of the sulfur particles to the adsorptively operative constituent particles is between 1:2 and 1:20 wherein the sulfur content of the sorbent is between 1 and 20 percent by mass and the average grain size of the sulfur is between 1 and 8 μm and the average grain size of the adsorptively operative constituent is about 20 μm.