发电厂生水换热器系统的实用化改进

针对宁夏京能宁东发电有限责任公司生水换热系统存在的问题,对传统的生水换热器进行了实用性改造,经优化设计后,将混合式换热器换为板式换热器,热源由厂用辅助蒸汽改为辅机循环水回水。改造结果表明:生水换热器投运率大幅度提高,辅机循环水回水的低温热能得到了回收利用,节能效果明显,为北方发电厂利用低温热源开创了一条新途径。

Practical technic improvement for raw water heat exchanger system in power plant

Aiming at the problems of raw water heat exchanger system in Jingneng Group NingxiaNingdong Power Generation Co., Ltd., makes practical technic improvement for raw water heat ex?changer system. Affter optimization design, the composite heat exchanger is changed to plate type heatexchanger and the thermal resource supplying come from house service auxiliary steam is replaced bycirculating return water of auxiliary equipment. The improvement result shows that the operating rateof raw water heat exchanger increases greatly,the low temperature from circulating return water of aux?iliary equipment can be reuse, the effect of energy saving improvement is prominent, the improvementcreates a new way of using low temperature thermal resource for power plant in the north of China.