Enhanced sorbent formulation for removal of mercury from flue gas

摘要

A mercury sorbent and method for enhancing mercury removal performance of activated carbon from flue gas by the addition of non-halogen nitrogen-containing to the flue gas stream are provided herein. Such compositions and methods provide improved mercury adsorption at reduced sorbent injection rates.

主权项

1. A mercury sorbent comprising:
an adsorptive material; and an additive mixture, the additive mixture comprising:
a halogen source; anda non-halogen nitrogen containing compound, selected from the group consisting of ammonium phosphate salts, mixed salt ammonium phosphates, ammonium pyrophosphates, hydrogen ammonium phosphates, dihydrogen ammonium phosphates, and combinations thereof.