超超临界参数机组的水汽品质控制  

Steam-water quality control for ultra-supercritical unit

作　　者：汪德良[1] 李志刚[1] 柯于进[1] 陈戎[2] 刘金生[3] 沈宝中 

机构地区：[1]西安热工研究院有限公司,陕西西安710032 [2]华能国际电力股份有限公司安全及生产部,北京100031 [3]华能国际电力股份有限公司玉环电厂,浙江台州317600 [4]华能国际电力股份有限公司上海石洞口二厂,上海200942

出　　处：《中国电力》2005年第8期57-61,共5页Electric Power

摘　　要：通过研究超临界条件下水汽物理特性,比较了常见杂质在不同参数的水汽条件下的溶解与沉积特性,说明了在超超临界参数机组中各部件可能发生的沉积危害和严格控制水汽品质的重要性,简述了超超临界条件下蒸汽的高温氧化特性及其危害。在总结我国超临界机组多年来的运行经验和国外近年来超超临界机组水汽品质控制技术的基础上,提出了我国超超临界机组发展过程中应该采用的凝结水处理方式及其控制指标,水汽品质控制方式,运行中盐类、腐蚀产物控制及水蒸气高温氧化的控制与监测方面的建议,提出了超超临界机组化学监督的主要方向和重点。The solubility and deposition of various impurities in the steam-water system corresponding to different parameters was compared based on the physical characteristic study under supercritical conditions. This paper presented the potential deposition problems, hightemperature oxidation problems in Ultra-supercritical （USC） units and the significance to control steam water quality. According to operational experiences of domestic supercritical unit and the current oversea steam-water quality control technology for USC unit, several suggestions in the field of chemical supervisory, were proposed in this paper for the development of USC unit in China. Typically, it covers the condensing water treatment and control targets, the control method for steam-water quality, the control of salts and corrosion products and the monitoring of high-temperature oxidation of steam for ultra-supercritical unit.

关 键 词：超超临界参数 水处理 水汽品质 高温氧化 控制 

分 类 号：TM621[电气工程—电力系统及自动化]