Patent Number: 6,248,217

Title: Process for the enhanced capture of heavy metal emissions

Abstract: This invention is directed to a process for forming a sorbent-metalcomplex. The process includes oxidizing a sorbent precursor and contactingthe sorbent precursor with a metallic species. The process furtherincludes chemically reacting the sorbent precursor and the metallicspecies, thereby forming a sorbent-metal complex. In one particular aspectof the invention, at least a portion of the sorbent precursor istransformed into sorbent particles during the oxidation step. Thesesorbent particles then are contacted with the metallic species andchemically reacted with the metallic species, thereby forming asorbent-metal complex. Another aspect of the invention is directed to aprocess for forming a sorbent metal complex in a combustion system. Theprocess includes introducing a sorbent precursor into a combustion systemand subjecting the sorbent precursor to an elevated temperature sufficientto oxidize the sorbent precursor and transform the sorbent precursor intosorbent particles. The process further includes contacting the sorbentparticles with a metallic species and exposing the sorbent particles andthe metallic species to a complex-forming temperature whereby the metallicspecies reacts with the sorbent particles thereby forming a sorbent-metalcomplex under UV irradiation.

Inventors: Biswas; Pratim (Chesterfield, MO), Wu; Chang-Yu (Gainsville, FL)


International Classification: B01D 53/00 (20060101); B01D 53/02 (20060101); C22B 43/00 (20060101); C07C 001/00 (); B01D 053/00 (); C01D 001/00 (); C22B 043/00 (); A62D 003/00 ()

Expiration Date: 06/12013