新型喷雾造粒喷嘴内闪蒸过程数值模拟  

Numerical Simulation of Flash Evaporation in New Spray Granulation Nozzle

作　　者：蒋涛[1] 毛羽[2] 王江云[2] 王永磊[2] 

机构地区：[1]中国船舶重工集团公司第七一一研究所 [2]中国石油大学(北京)重质油国家重点实验室

出　　处：《化工机械》2015年第1期64-67,共4页Chemical Engineering & Machinery

基　　金：国家重点基础研究发展规划"973"资助项目(2010CB226902);国家自然科学基金资助项目(21106181)

摘　　要：根据戊烷闪蒸相变中的传质传热规律,改进了戊烷闪蒸过程的经验模型,并将其植入到CFD软件Fluent中,较为准确地预测闪蒸雾化的非平衡热力学过程。对新型喷雾造粒喷嘴内气液戊烷和沥青的三相闪蒸流动过程进行了数值模拟,结果显示:介质在新型旋流喷嘴内呈现分层流动,能够控制戊烷闪蒸速率,可以制备质量较好的沥青颗粒。According to the mechanism of mass and heat transfer in the pentane’s flash phase transition,an experienced model for pentane’s flash process was developed and implanted into Fluent to accurately predict the flash evaporation’s non-equilibrium thermodynamic process.Simulating the three-phase flash evaporation flow of the mixture pentane and asphalt shows that the fluid forms in the nozzle resemble an obvious stratified flow and the pentane evaporating rate can be controlled to benefit the production of high quality asphalt parti-cles.

关 键 词：喷雾造粒机 沥青造粒 喷嘴结构 超临界戊烷 闪蒸 

分 类 号：TQ051.93[化学工程]