火电机组低负荷下主要节能潜力探讨

Discussion on Main Energy Saving Potential under Low Loads of Thermal Power Unit

为降低机组低负荷运行时的供电煤耗,对华能瑞金电厂多年来节能运行优化和技改情况进行深入探讨,总结提出华能瑞金电厂机组低负荷下运行优化方式及节能技改项目。实践证明,机组低负荷运行时,针对锅炉系统进行的2台磨运行,针对汽机系统进行的压力曲线优化、冷端系统优化、凝结水泵节能优化等,实际可操作性强,在保证机组安全可靠的前提下能较好达到节能降耗的目的,具有推广价值。

To reduce the net coal consumption under low loads of the units, in this article, the optimizations and technical retrofits on energy saving of Huaneng Ruijin Power Plant in recent years are discussed thoroughly and the operation optimization plans and the technical retrofit items for low loading conditions are put forward. The practices indicate that when at the low loading operation, the two-mill operation, pressure curve optimization, cold-end optimization, and condensate pump optimization are more operable to achieve energy saving on the premise of ensuring the security and reliability of the units. The discussion results are valuable for popularization.