烟气余热回收过程中有机热载体热工参数的优化与控制

Optimum control for thermal engineering parameters of the organic heat carrier in the waste heat recovery

针对有机热载体换热器在烟气余热回收过程中存在的结焦问题,应用传热学知识研究了结焦厚度对换热器传热性能的影响规律。采用数值仿真技术,获得了换热器中有机热载体的温度分布特点。以有机热载体出现温度最高值的位置为温度监测点,以监测点温度低于有机工质最大工作温度为约束条件,以换热器热效率最大为目标,提出了操作参数的优化策略,并构建了相应的控制系统,对降低工业产品单位能耗、推进节能降耗工作具有重要的理论与实践意义。

The most vital factor in the waste heat recovery-coking of the organic heat carrier is present. Thus,we take the advantages of the applications of the principles in heat transfer and numerical simulation to study how the thickness of the coking matters the performance of heat transfer and how the temperature on the heat exchangers distributed. As a result,we have put forward a optimal strategy to adjust the thermal engineering parameters of the organic heat carrier during the process of waste heat recovery. With the application of this method,large quantities of energy would be saved. A promising future of this method is just around the corner.