On September 10, 2019, the tubular rotary cooling furnace independently developed by our company began to be installed in two 30KTA aluminum fluoride lines in Shandong Bofeng Lizhong Chemical Co., Ltd. The cooling furnace has the following advantages: 1. High heat exchange efficiency; 2, Water and materials are completely enclosed type circulating, zero emission and zero pollution; 3, the equipment size is small; 4. Low operation and maintenance cost. It is a disruptive technological revolution for the old cascade drip type coolers.