The invention discloses a precise
ammonia spraying
system suitable for SNCR denitration, and relates to the technical field of
ammonia spraying devices for SNCR denitration, the precise
ammonia spraying
system comprises a top cover fixedly mounted at the top of a boiler
cyclone separator
barrel, and a reciprocating pushing mechanism is mounted on the outer wall, located on the outer side of a spray gun, of the boiler
cyclone separator
barrel; and supporting cylinders which are distributed at equal intervals are fixed on the inner wall, close to the spray gun, of the boiler
cyclone separator cylinder body. According to the precise ammonia spraying
system suitable for SNCR denitration, the sleeve used for dispersing ammonia sprayed by the spray gun can rapidly rotate and transversely move, dead angles in the spraying process can be reduced, the ammonia is evenly distributed in the boiler cyclone separator
barrel, mixing of the ammonia and
flue gas is promoted, the working efficiency of the ammonia spraying system is improved, and the service life of the ammonia spraying system is prolonged. Moreover, the sleeve can generate slight vibration during rotation,
dust particles in the through holes are vibrated off, the service life of the sleeve is prolonged, meanwhile, gas can be helped to form finer
fog drops during spraying,
ammonia gas can be better diffused conveniently, and the
flue gas reaction efficiency is improved.