DRY SCRUBBER WITH CONDENSING HEAT EXCHANGER FOR CYCLE EFFICIENCY IMPROVEMENT

摘要

A system for controlling sulfur dioxide (SO2) in a flue gas produced by a boiler comprises an air heater connected to the boiler for cooling the flue gas produced by the boiler. A dry scrubber is connected to the air heater and a slurry source for receiving the heated flue gas and a slurry in order to remove SO2 from the flue gas. A particulate collector is connected to the dry scrubber in order to collect particles from the flue gas. Heat is recovered from the flue gas by connecting a condensing heat exchanger to the particulate collector; and a condensate recycler is connected to the condensing heat exchanger and the slurry source for reducing the water requirements for the system.