Removing Ammonia from Fly Ash

2001 Conference on Selective Catalytic Reduction (SCR) and Selective Non-Catalytic Reduction (SNCR) for NOx Control

S. Gasiorowski ; J. Bittner ; F. Hrach

Others  :  http://www.netl.doe.gov/publications/proceedings/01/scr/sgas1.pdf
PID  :  24308

来源: CEUR

【 摘 要 】

The supply of fly ash available for use as a pozzolan in concrete may be severely impacted by the effects of air quality regulations on utility plant operations. Specifically, mandated reductions in NOx, particulate, and SO_3 containing aerosol emission levels are expected to require the installation of control systems which may use ammonia as a reagent. Depending on the level of ammonia present in the flue gas at the unit precipitators, the collected fly ash may be heavily contaminated with ammonia primarily as ammonium sulfate salts.