热管换热器在精制盐干燥系统余热回收中的实验研究

Research of Heat Pipe Heat Exchanger in Heat Recovery of Refined Salt Drying System

干燥是精制盐工业生产中的高耗能环节。国内常用精制盐干燥系统的干燥尾气携带部分干燥供给热能,有较高的余热回收价值。文章针对精制盐干燥尾气的性质和振荡流热管的特性,将热管换热器用于精制盐干燥系统的余热回收,提出了两种干燥工艺改造方案,比较了两种方案的特点;在相同工况下对重力热管和振荡流热管的余热回收效果进行了实验。实验结果表明:振荡流热管用于精制盐干燥尾气的余热回收,效果较好;其中,振荡流热管基于其传热性能好、结构简单、加工方便等特性,避免了重力翅片热管换热器体积大、设备笨重、成本较高等缺点,在精制盐干燥尾气余热回收中有很好的应用前景。

Drying is a high energy-consuming industry in refined salt industrial production.In the refined salt drying system,dry exhaust carry out part of the dry heat,which has a higher recovery value.For the nature of dry exhaust and characteristics of oscillating-flow heat pipe,this paper use the heat pipe heat exchanger for the purification of waste heat recovery salt drying system,proposed two new drying process to compare the characteristics of the two processes;In the same operating conditions of the gravity heat pipe and oscillating flow heat pipe waste heat recovery effect to the experimental.The results show that： for exhaust heat recovery,oscillatory flow heat pipe is more effective;Oscillating flow heat transfer heat pipe based on its good performance,simple structure,processing and convenient features such as,avoid the heat exchanger fin bulky,heavy equipment,high cost and other disadvantages of gravity heat pipe.Oscillating-flow heat pipe has good application prospects.