Cooling device for tower wall of hot-process phosphoric acid reaction tower

The utility model provides a tower wall cooling device of a hot-process phosphoric acid reaction tower, which comprises an annular pipe sleeved on the top of the reaction tower, and a top water catchment ring and a middle water catchment ring fixed at the bottom of the annular pipe, a water outlet hole is arranged on the inner side of the annular pipe, and the top water catchment ring and the middle water catchment ring are both fixedly sleeved on the reaction tower. Gaps are formed between the inner sides of the top water catchment ring and the middle water catchment ring and the reaction tower; and the ring pipe is connected with a water supply pipe. The cooling efficiency of the tower wall of the reaction tower is maintained; and the reaction tower and the cooling device are convenient to maintain. 本实用新型提出一种热法磷酸反应塔塔壁降温装置，包括套设于反应塔顶部的环管以及固定于环管底部的顶部汇水环和中部汇水环，环管内侧设置有出水孔，顶部汇水环和中部汇水环均固定套设于反应塔上，且顶部汇水环和中部汇水环的内侧与反应塔之间设置有间隙，环管连接送水管。维持了反应塔塔壁的降温效率且方便对反应塔和降温装置进行维护。