| Aiming at the problems of low collection efficiency (about 89%~92%) and high pressure drop (1300~1500 Pa) of the C1 cyclone in a 3200 t/d new dry process cement clinker production line, this paper proposes a systematic structural optimization scheme. Through multiple measures such as inlet modification (area expanded to 4.15 m², 45° inclined bottom), addition of adjustable guide vanes (wind speed control at 17~19 m/s), optimization of the inner barrel (tapered exhaust pipe), and addition of a cone reflection cone, the “compression phenomenon” between the inlet airflow and the backflow is suppressed, the longitudinal circulation is weakened, and “re‑entrainment” is reduced. After optimization, the dust concentration at the C1 outlet can be reduced to 48.41~77.66 g/Nm³ under different operating conditions, meeting the design target (≤80 g/Nm³). Practical operation shows that the structural optimization significantly reduces the dust load in the downstream exhaust gas pipeline, effectively slows down the wear of the waste heat boiler and high‑temperature fan impeller, and prolongs the service life of the SCR denitration catalyst, providing a reliable technical path and data support for similar equipment renovation in the cement industry. |