Patent ID: 9186625
Filing Date: 2015-11-17
Classification: B01D

Abstract:
1. An apparatus for automated inlet temperature control of an air quality control system including any one from among the group consisting of a circulating fluidized bed (CFB) scrubber, Transport Reactor (TR) or spray dryer absorber (SDA) scrubber with an inlet duct and an outlet duct connected to a downstream induced draft (ID) fan, air quality control system also including a flue gas recirculation (FGR) system comprising a FGR duct connected from the outlet of said ID fan to said inlet duct, said apparatus comprising: a temperature probe mounted in said inlet duct proximate said CFB scrubber, TR or SDA for sensing temperature of flue gas in said inlet duct just prior to entry into said CFB scrubber, TR or SDA; a pre-heater connected to said FGR duct and in fluid communication with said CFB scrubber, TR or SDA; a programmable controller in communication with said temperature probe for monitoring a dry bulb temperature at said probe, said programmable controller including software comprising computer instructions stored on non-transitory computer media for performing the steps of,