化工进展2016，Vol.35Issue(11)：3421-3425,5.DOI:10.16085/j.issn.1000-6613.2016.11.005
水平液固循环流化床换热器传热性能评价
Evaluation on heat transfer performance of horizontal liquid-solid circulating fluidized bed heat exchanger
摘要
Abstract
The horizontal liquid-solid circulating fluidized bed heat exchanger with Kenics static mixer was studied by this experiment. The effects of Kenics static mixer twist rate,the installation method of Kenics static mixer,flow rate and particle volume fraction on heat transfer performance and flow resistance performance were investigated,which were analyzed by the comprehensive heat transfer performance evaluation criteria index. It was found that the heat transfer and resistance coefficient decrease with the increase of twist rate. Results showed that the performance evaluation criteria of Kenics static mixer with twist rateY=1.5,2,2.5,3.5 were over 1 without exception in the range of Reynolds number 10000—45000,which indicates that the horizontal fluidized bed heat exchanger with Kenics static mixer can enhance heat transfer. The performance evaluation criteria of horizontal fluidized bed heat exchanger reached 1.18 at most,when the Reynolds number reached about 25000, the twist rate of Kenics static mixer isY=2.5 and the particle volume fraction is 4%. The performance evaluation criteria of horizontal fluidized bed heat exchanger is the highest on the condition that the distance between two Kenics static mixers with twist rateY=2.5 is 200mm.关键词
Kenics静态混合器/水平液固循环流化床/多相流/强化传热/性能评价指标Key words
Kenics static mixer/horizontal liquid-solid circulating fluidized bed/multiphase flow/heat transfer enhancement/performance evaluation criteria(PEC)分类
化学化工引用本文复制引用
刘燕,张英迪,裴程林,王智,张伟..水平液固循环流化床换热器传热性能评价[J].化工进展,2016,35(11):3421-3425,5.基金项目
河北省科技支撑计划（14273105D）及河北省自然科学基金（D2014202074）项目。 （）
