为优化MTO催化剂分子筛干燥工艺，提升催化剂竞争力，开发了一种新型节能催化剂旋转闪蒸干燥技术，即"填料+密封环"组合密封和特殊搅拌结构的新型旋转闪蒸干燥机用于MTO催化剂的干燥，避免了干燥机"抱轴"和入口堵塞事故发生，利用尾气循环使高温尾气余热回用，减少了急冷冷却水用量，提高了干燥系统热效率，同时实现了MTO催化剂的节能、清洁化生产，提高了经济效益。

To optimize the drying process of the catalyst for MTO and improve the competitiveness of the catalyst,a clean and energy-efficient rotary flash drying technology is developed for preparation of catalyst,i.e.new type rotary flash drying machine with a combined seal system of "stuffing box+seal ring" and special stirring structure is used to dry the catalyst.The technology can avoid shaft holding accident and entrance blockage risk,and the waste heat of high temperature flue gas can be recovered by utilizing flue gas cycle,therefore reducing consumption of quench cooling water and improving the thermal efficiency of the drying system.This technology can realize energy-efficient and clean production of MTO catalyst,and improve economic efficiency.