摘要
针对黏度随浓度变化较大的物料在蒸发操作中传热系数低的问题,建立了新构型双室双管程蒸发器。双室双管程蒸发器将1个分离室利用隔离板分割成为2个分室,各分室分别采用串联双管程加热室操作。以甘油-水溶液为工质进行热态实验,研究了不同热通量及物料黏度下双室双管程蒸发器的平均传热系数。结果表明:双室双管程蒸发器能够实现稳定运行,平均传热系数与热通量和蒸发物料的黏度有关;在相同条件下,双室双管程蒸发器的平均传热系数相比单室单管程型式有较大提高。
A new type evaporator with double separation chambers and double tube passes was established to solve the problem of reduced heat transfer coefficient for the evaporation material that viscosity changes greatly with the concentration.The whole separation chamber is divided into two sub-chambers and each sub-chamber has double tube passes in tandem.Glycerin and water solution was applied to the hot state experiment,and the average heat transfer coefficient was studied in the conditions of different heat flux and different material viscosity.The results show that the evaporator performs stably,and the average heat transfer coefficient is relative to heat flux and material viscosity.In the same conditions,compared with the evaporator with single chamber and single tube pass,the evaporator with double separation chambers and double tube passes has a great improvement.
出处
《化学工程》
CAS
CSCD
北大核心
2011年第10期43-46,共4页
Chemical Engineering(China)
关键词
蒸发器
传热系数
双分离室
双管程
蒸发
evaporator
heat transfer coefficient
double separation chambers
double tube passes
evaporation
