转速对双轴反应器中环戊烷水合物形成的影响  

Effect of Rotating Speed on Cyclopentane Hydrate Formation in Biaxial Reactor

作　　者：谭睿 王朋超 何燕[1] TAN Rui;WANG Pengchao;HE Yan(College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061

出　　处：《青岛科技大学学报（自然科学版）》2024年第4期105-113,共9页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：山东省泰山学者项目(ts20190937).

摘　　要：环戊烷水合物作为新型蓄冷工质,存在生长速率缓慢,贴壁生长,难以进行连续化生产的难题。为解决上述问题,本研究选用双轴搅拌结构生产水合物,采用Fluent对不同转速下反应器内部多相流的混合及流动特性进行模拟,并搭建实验台进行实验验证。结果表明,当转速小于280 r·min^(-1)时,随着搅拌转速增大,湍流耗散率增加,水合物颗粒分布更加均匀;但转速大于280 r·min^(-1),会造成颗粒在反应腔内团聚沉积加剧,造成堵塞并大幅增加反应能耗。实验结果证实,适当提高转速能够加快反应速率,增加水合物产量,且小于等于250 r·min^(-1)时水合物结构品质高,生产经济性好。综上可知,双轴反应器对水合物连续化生产具有促进作用,且250 r·min^(-1)转速最适宜环戊烷水合物连续化生产。As a new type of cold storage medium,cyclopentane hydrate has the problems of slow growth rate,adherent growth,and difficulty in continuous production.In order to solve the problems,a biaxial stirring structure is used in this work to produce hydrate.Fluent is used to simulate the mixing and flow characteristics of multiphase flow inside the reactor at different speeds,and an experimental bench is built for experimental verification.The results show that when the speed is less than 280 r·min^(-1),as the increase of stirring speed,the turbulent dissipation rate increases,and the distribution of hydrate particles is more uniform.But when the rotation speed is more than 280 r·min^(-1),the agglomeration and deposition of particles in the reaction chamber are intensified,resulting in blockage and greatly increased reaction energy consumption.The experimental results show that the reaction rate and hydrate production can be improved by increasing the rotational speed appropriately.When the hydrate is less than or equal to 250 r·min^(-1),the hydrate structure quality is high and the economic efficiency is good.In conclusion,the biaxial reactor can promote the continuous production of cyclopentane hydrate,and 250 r·min^(-1) is the most suitable speed.

关 键 词：双轴搅拌 环戊烷水合物 多相流 双轴反应器 新型蓄冷工质 

分 类 号：TQ021.1[化学工程]