汽-液-固循环流化床蒸发器热效率的实验研究

摘要

为对多管循环流化床蒸发器中的热效率进行研究,构建了汽-液-固透明多管循环流化床蒸发系统。研究了液体循环流量、热通量、颗粒加入量、颗粒性质等参数对蒸发器热效率的影响。结果表明:随着液体循环流量、颗粒加入量和热通量的增加,热效率均增大;且随着热通量的增加,热效率增大的幅度较大,说明在较高热通量时,热量的利用率较高。完全流化时,颗粒的密度和导热系数越大,热效率越高。操作为强制循环,循环泵消耗功率随颗粒加入量的增加而增长的幅度不大。

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	贾文婷
	姜峰
	齐国鹏
	王兵兵
	李修伦

关键词：汽-液-固；强制循环；循环流化床蒸发器；热效率

Abstract：

A transparent multi-tube vapor-liquid-solid circulating fluidized bed evaporator was built to research the thermal efficiency under different conditions. The effects of circulating flow rate, heat flux, the amount of additive particles and properties of particles on the thermal efficiency in the evaporator were investigated. The results show that as the circulating flow rate, additive particle amount and heat flux increase, the thermal efficiency increases; and thermal efficiency increases significantly with the increment of heat flux, which indicates that heat utilization is better at high heat flux. While the density and thermal conductivity of particle increase, the thermal efficiency also increases. A circulating pump was used as forced-circulation equipment, and the power consumption of pump increases modestly with the increment of additive particle amount.

Keywords： vapor-liquid-solid； forced-circulation； circulating fluidized bed evaporator； thermal efficiency

Received 2013-05-10;

Corresponding Authors: 姜峰,E-mail: jiangfeng@tju.edu.cn。 Email: jiangfeng@tju.edu.cn

About author: 贾文婷(1987-),女,硕士研究生,现从事多相流强化传热与防、除垢的研究。

引用本文:

贾文婷, 姜峰, 齐国鹏, 王兵兵, 李修伦.汽-液-固循环流化床蒸发器热效率的实验研究[J]. 化学工业与工程, 2015,32(4): 39-43

Jia Wenting, Jiang Feng, Qi Guopeng, Wang Bingbing, Li Xiulun.Thermal Efficiency in the Vapor-Liquid-Solid Multi-Pipe Circulating Fluidized Bed Evaporator[J]. Chemcial Industry and Engineering, 2015,32(4): 39-43

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