化工进展2016，Vol.35Issue(9)：2693-2698,6.DOI:10.16085/j.issn.1000-6613.2016.09.009
脂肪酸甲酯降膜蒸发器沸腾传热性能
Boiling heat transfer characteristics of fatty acid methyl ester(FAME)in falling film evaporator
徐委托 1马晓建 1马力 2陈俊英 1杨闪 1张芬芬2
作者信息
- 1. 郑州大学化工与能源学院，河南郑州 450001
- 2. 生物质炼制技术与装备河南省工程实验室，河南郑州 450001
- 折叠
摘要
Abstract
Using conventional line-tube heat exchanger for evaporation of high viscosity and easy-to-scaling mixture can easily block liquid distributor and make the cleaning of foul tube impossible. Therefore,a new type of falling film evaporator was designed,which used large liquid orifice plus tilt ring plate for liquid distribution and took larger diameter of conical shell as heat transfer wall. The variation of boiling heat transfer coefficients with shell’s taper angle,Reynolds number and heat fluxes were determined by a pilot scale falling film evaporation system,using the FAME mixture as liquid model. Result showed that this type of evaporator worked well for FAME,the system could work smoothly with high heat transfer efficiency for a long time and without the occurrence of clogging. The evaporator shell’s taper angle can intensify heat transfer process. The increase of heat flux and feed flow had a negative influence on heat transfer coefficient. Experimental correlation for boiling heat transfer coefficients with consideration of Reynolds number and taper angle of evaporator shell was established.关键词
脂肪酸甲酯/降膜蒸发器/沸腾传热系数Key words
fatty acid methyl ester/falling film evaporator/boiling heat transfer coefficient分类
能源科技引用本文复制引用
徐委托,马晓建,马力,陈俊英,杨闪,张芬芬..脂肪酸甲酯降膜蒸发器沸腾传热性能[J].化工进展,2016,35(9):2693-2698,6.
