摘要
介绍了塔板上一种特殊的流动不均现象．首次给出了用热膜流速仪在φ1200冷模高弹性浮阀塔板上测定的沟流量数据．并进行了塔板沟流量对塔板效率影响的模拟研究，在计算中采用了新的分区法──将塔板分为传质鼓泡区和沟流区，得出了不同参数条件下塔板沟流量与塔板效率的变化关系曲线。
Liquid channelling,a special nonuniform flow phenomenon on distillation plate,is studied.The hot-film anemometer is used to measure the liquid channelling flow rate on a φ1200 hing-turndown-ratio valve plate for the first time.The Plate is divided into two rregions,the bubbling region with mass transfer and the channelling region,and the difference equations of material balance in each region are solved to give the relationships between liquid channelling and plate efficiency under various operating conditions.The results can be utilized to determine the liquid channelling effect on industrial distillation.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1996年第3期305-311,共7页
CIESC Journal
基金
国家基金委资助
国家重点精馏分离实验室资助
关键词
沟流
热膜流速仪
塔板效率
精馏塔
liquid channelling,hot-film anemometer,plate efficiency
