Comprehensive report to Congress: Clean Coal Technology Program: LIFAC sorbent injection desulfurization demonstration project: A project proposed by: LIFAC North America, Inc

摘要

This report describes a project proposed by LIFAC North America, Inc., (LIFAC NA). The host site will be a coal-fired powerplant of Richmond Power & Light in Indiana. LIFAC technology uses upper-furnace limestone injection with patented humidification of the flue gas to remove 75--80% of the sulfur dioxide (SO(sub 2)) in the flue gas. In the LIFAC process, limestone is injected into the upper part of the furnace where the temperatures are sufficiently high to calcine the calcium carbonate (CaCO(sub 3)) to lime (CaO), which reacts with the SO(sub 2) in the flue gas to form calcium sulfite (CaSO(sub 3)), some of which oxidizes to form calcium sulfate (CaSO(sub 4)). The flue gas leaving the boiler then enters LIFAC's unique humidification chamber which increases the water content of the flue gas and activates the lime to enhance SO(sub 2) removal. Reduction of SO(sub 2) emissions are approximately 75--80%. Spent sorbent is then removed, along with the fly ash by an existing electrostatic precipitator (ESP) or baghouse. 6 figs., 1 tab.