Flue gas treatment device and design method of flue gas treatment device
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsTomotsugu Masuda, Keiichiro Kai, Shimpei Kaneda
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Abstract
Provided is a flue gas treatment device configured to treat a flue gas discharged from a combustion device that combusts fuel containing ammonia, and the flue gas treatment device includes: an ammonia decomposition unit having an ammonia decomposition catalyst that decomposes ammonia contained in the flue gas; and a nitrogen oxide decomposition unit having a second catalyst that decomposes nitrous oxide and NOx contained in the flue gas in which ammonia was decomposed by the ammonia decomposition unit.
Claims7
A flue gas treatment device configured to treat a flue gas from a combustion device that combusts fuel containing ammonia, the flue gas treatment device comprising:
- a first treatment unit having a first catalyst that decomposes ammonia contained in the flue gas;
- a second treatment unit having a second catalyst that decomposes nitrous oxide and NOx contained in the flue gas in which ammonia was decomposed by the first treatment unit;
- a detection unit configured to determine a concentration of nitrous oxide contained in the flue gas that passed through the second treatment unit;
- and
- a first supply unit configured to supply ammonia or urea water into the flue gas supplied from the first treatment unit to the second treatment unit when the concentration of nitrous oxide contained in the flue gas is higher than a first predetermined concentration,
- wherein the second catalyst is a catalyst that reduces and decomposes nitrous oxide contained in the flue gas by ammonia, and
- wherein the first treatment unit removes, by the first catalyst, NOx produced when ammonia contained in the flue gas is decomposed.
Dependencies are inferred from the claim text.