Dry scrubber system with low load distributor device
AssigneeALSTOM Technology Ltd
InventorPer Hakan Fredrik LANDMER
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Abstract
An air quality control system (AQCS) 14 useful for treating flue gas FG, such as flue gas FG produced by a fossil fuel fired boiler 12 is described. The AQCS 14 is equipped with a dry scrubber low load distributor device 66. With the low load distributor device 66, flue gas FG flow through a dry scrubber reactor 36 is stabilized under varying plant 10 load conditions to maintain AQCS 14 stability, efficiency and effectiveness.
Claims15
An air quality control system for treating flue gas produced in a combustion process to produce cleaned flue gas comprising:
- a moistened reducing agent distributor device operable to extend outwardly from a distribution device disperser plate within a dry scrubber reactor to reduce area of flue gas flow through the dry scrubber reactor when operated under low load conditions and operable to retract inwardly beneath the distribution device disperser plate within a dry scrubber reactor to increase area of flue gas flow through the dry scrubber reactor when not operated under low load conditions.
A method of maintaining flue gas flow stability within a dry scrubber reactor under differing load conditions comprising:
- arranging a moistened reducing agent distributor device within a dry scrubber reactor operable to extend outwardly from a distribution device disperser plate to reduce area of flue gas flow through the dry scrubber reactor when operated under low load conditions and operable to retract inwardly beneath the distribution device disperser plate to increase area of flue gas flow through the dry scrubber reactor when not operated under low load conditions.
Dependencies are inferred from the claim text.