Studies of the Fluidized Lime-Bed Coal Combustion Desulfurization System. Part 1. Design of the High Pressure Fluidized Bed Combustion Lime Regeneration Pilot Unit -The FBCR Miniplant. Part 2. Factors Affect ing NOx Formation and Control in Fluidized Bed Combustion.

摘要

The preliminary design of 650KW pressurized (10atmosphere) fluid bed coal combustor is described. The system will consist of a 12-inch ID combustor and a 5-inch ID regenerator,with provisions for continuous solids circulation between the two reactors. The results of an experimental study conducted with the objective of determining methods of simultaneously obtaining low SO(x) and NO(x) emissions from a fluidized bed coal combustor are reported. In fixed bed reactor studies, a reaction system involving NO, SO2,and CaO was identified. The apparent order of this reaction was about 0.5and it had a negative temperature dependence. The reduction of NO by CO over CaSO4was also studied in fixed bed experiments and found to proceed at appreciable rates in the 1300 F to 1700 F.