燃煤电厂渣水循环系统工艺研究  

Study on Process of Slag Water Circulation System in Coal-Fired Power Plants

作　　者：苏艳[1] 雷方俣 姜琪[1] 许臻[1] 降晓艳[1] 

机构地区：[1]西安热工研究院有限公司,陕西西安710032 [2]浙江浙能嘉华发电有限公司,浙江杭州310009

出　　处：《中国电力》2015年第2期41-44,共4页Electric Power

摘　　要：以浙江某燃煤电厂4×300 MW机组为例,对湿除渣系统运行现状进行了分析,对减少除渣系统补充水量的工艺进行了研究。实践结果表明:投加适量的阻垢剂可以有效控制循环渣水系统结碳酸钙垢,所采用的渣水冷却器可有效降低循环渣水温度,满足生产要求。所建渣水闭式循环系统大幅减少了冲渣补充水量,减少了废水排放,经济、环境效益明显。In this paper, the current operation state of the wet slag disposal system of four 300-MW units in a coal-fired power plant of Zhejiang is analyzed, and the study on flushing slag water reduction of the slag disposal system is carried out. The practical results indicate that the formation of calcium carbonate scale can be constrained effectively by adding an appropriate amount of scale inhibitors to the slag water circulating system, and the circulating flushing slag water can be cooled down by using a water cooler. By building the enclosed slag water circulating system, both the make-up and discharged wastewater are greatly reduced, which exhibits significant economic and environmental benefits.

关 键 词：燃煤电厂 湿式除渣 渣水循环 阻垢剂 渣水冷却器 

分 类 号：TM621[电气工程—电力系统及自动化]