我厂φ800氧化脱氢反应器中的旋风分离器,原设计系用苏联Ниногаз型旋风分离器,但效率低,催化剂跑损严重。1986年我们按 Buell 型重新设计旋风分离器系统,并将二级分离改为三级分离,由内旋改为外旋(见图1)。1987年经过630小时试验,取得了比较好的经济效益。旋风分离器总效率达到99.2%,使催化剂单耗由原来的10公斤/吨丁二烯下降到3公斤/吨丁二烯,(每吨催化剂价格2.2万元),生产能力提高30%,丁烯转化率76.7～81.6%,丁二烯选择特性88.3～90.1%,丁二烯平均收率 I plant φ800 oxidative dehydrogenation reactor cyclone, the original design with the Soviet Union Ниногаз type cyclone, but inefficient, serious catalyst run away. In 1986, we redesigned the cyclone system according to the Buell type and changed the secondary separation into tertiary separation from internal rotation to external rotation (see Figure 1). After a test of 630 hours in 1987, it has achieved relatively good economic benefits. The total efficiency of the cyclone reaches 99.2%, reducing the unit consumption of catalyst from 10 kg / ton butadiene to 3 kg / ton butadiene, (price of 22,000 yuan per ton of catalyst), increasing the production capacity by 30% 76.7-81.6% conversion of olefins, 88.3-90.1% selectivity of butadiene, butadiene average yield