The high-temperature and high-dust flue gas from the outlet of the preheater C1 is first filtered through a high-temperature metal filter bag (dust removal area), and the dust content of the flue gas is reduced to below 10mg/Nm3, and then the clean high-temperature flue gas passes through the SCR from bottom to top In the reactor (denitration zone), under the action of the catalyst, the ammonia injected into the flue gas undergoes a reduction reaction with NOx, and the NOx is removed to below 50mg/Nm3.
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