| 摘要 |
PURPOSE: An apparatus for injecting powdered reagent is provided to prevent generation of differential pressure in transfer pipe and clogging of pipe and smoothly inject the powdered reagent into exhaust gas pipe by efficiently injecting compressed air through injection nozzles. CONSTITUTION: The apparatus comprises a powder supply means for storing and supplying the powdered reagent; a transfer pipe connected to the rear of the powder supply means to guide transfer of the powdered reagent; a nozzle part(16) connected to the rear of the transfer pipe to inject the powdered reagent; and a compressed air supply means connected to one side surface of the nozzle part to supply compressed air into the nozzle part, wherein an annular pipe is circumferentially formed inside the side wall of the nozzle part, the annular pipe is communicated with an exit of the compressed air supply means, and a plurality of air injection ports(23) are formed from the annular pipe to the front in the nozzle part, wherein the nozzle part comprises a nozzle main body(16a) connected to the rear of the transfer pipe, a nozzle main pipe(16b) connected to the rear of the nozzle main body, and a nozzle expansion pipe(16c) connected to the rear of the nozzle main pipe, and the annular pipe(21) and the plurality of air injection ports are formed on the nozzle main body, wherein a pipe(27) made of an abrasion resistant material is inserted into the nozzle main pipe, and wherein the air injection ports are slantly formed in a spiral shape to an axial direction of the nozzle part.
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