【作者】 姚克俭； 章渊昶； 王良华； 胡松平；

【Author】 Yao Kejian , Zhang Yuanchang , Wang Lianghua , Hu Songping (Zhejiang University of Technology. College of Chemical Engineering, Hangzhou 310014)

【机构】 浙江工业大学化学工程与材料学院；

【摘要】 新型高效大通量DJ系列塔板采用矩形悬挂式降液管,处理能力可比一般塔板高30％～50％。通过在受液区增设导流装置、防冲击漏液装置,采用新型固定阀作为鼓泡元件以及在塔板下方复合填料等措施,改善板上液流分布,减少冲击漏液量和雾沫夹带量,从而大大提高塔板效率,增大操作弹性。DJ系列塔板的效率与浮阀塔板相当,在改造中可一对一代换普通浮阀塔板实现扩能25％以上。DJ塔板在天津乙烯、广州乙烯、抚顺乙烯、独山子乙烯以及兰州乙烯中获得了成功应用,产生了巨大的社会经济效益。更多还原

【Abstract】 DJ series tray with rectangular suspending downcomer has 30%～50% higher liquid capacity than common trays with arch downcomer. Liquid distribution was more uniform on DJ tray deck after installing some directing baffles on tray deck. Dumping was reduced much more after replacing anti - dumping unit for perforated sieve holes on the liquid receiving area. Entrainment was decreased much more after combining a thin layer of packing under tray deck or using new fixed valve as bubbling unit. As a result, tray efficiency was improved and operating turndown was increased after some modifications in DJ tray structure. DJ - 3 tray and DJ - 5 tray had as much efficiency as valve tray and could increase more 25% capacity by replacing common valve tray one for one. DJ series tray have achieved much success in application in Sinopec Tianjin company, Sinopec Guangzhou company, CNPC Fushun petrochemical company, CNPC Duosanzi petrochemical corporation and CNPC Lanzhou petrochemical corporation, and produced much more benefits in society and in economy.更多还原