Composition, Production And Use Of Sorbent Particles For Flue Gas Desulfurization

摘要

The present methods and systems relate to the removal of sulfur oxides and/or mercury from flue gases by use of a sorbent. Sorbent can comprise an alkali or alkaline earth metal oxide, a transition metal oxide catalyst, and a clay. The sorbent can additionally comprise a polyanion for binding mercury oxides and salts. Methods are provided to produce individual sorbent particles of small diameter, resulting in larger numbers of particles. The state of agglomeration of sorbent particles is important, and aspects of the production and composition of the sorbent are specified so as to either prevent agglomeration or to break up such agglomeration if it occurs. Methods of sorbent injection are indicated both to increase effectiveness as well as economic returns.