The utility model provides a fractionating
tower top diversion anti-
corrosion device which is arranged at the top end of a fractionating
tower body and comprises a diversion body and a connector, a liquid collecting tank and a supporting net are arranged in the diversion body, the supporting net is arranged above the liquid collecting tank, the supporting net is composed of a plurality of net
layers,
ceramic fibers are arranged between the net
layers of the supporting net, and the connector is connected with the diversion body. A through hole communicated with the outside is formed in the bottom of the liquid collecting groove and connected with a liquid guide
pipe, a drain valve is arranged in the liquid guide
pipe, and a plurality of
ammonia water injection openings are formed in the portion, above the supporting net, of the flow guide body. Therefore, the device has the advantages of collecting liquid acid condensed at the top of the
tower due to low temperature, timely leading out the liquid acid at the top of the tower, preventing the inner wall of the fractionating tower from being corroded, and providing guarantee for the stability of a
system in the fractionating tower.