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US 5,935,299 AGranted
Apparatus and method of spray dryer/bag filter using circulating shield air
AssigneeDaewoo Corporation
InventorsChil-Lim Park, Eui Sin Lee, Byung-Hwan Kim, Gi-Ho Park, Hee Jin In
Life of this patent
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Abstract
A spray dryer/bag filter apparatus for removing flue gas from an incinerator, which is structurized to re-circulate the purified gas as the shield air for protecting the slurry spraying nozzle thermally from hot gas without using any additional blower to introduce external air, that the flue gas is not diluted.
Claims5
A spray dryer/bag filter apparatus for removing flue gas from an incinerator, comprising:
- a spray dryer;
- a nozzle for spraying slaked lime slurry into said dryer;
- a cap surrounding and spaced from said nozzle;
- a conduit for supplying heated flue gas to said dryer which passes outside of said cap and into said dryer to neutralize slurry contents;
- a return conduit to draw gas from said spray dryer and supply it into the space between said cap and said nozzle at a temperature lower than said flue gas to thermally insulate said nozzle from said heated flue gas.
2 more elements
Dependencies are inferred from the claim text.