贴壁风对电站锅炉近壁面还原性气氛的影响研究  

Study on the Influence of Wall Air on the Reducing Atmosphere Near the Wall of the Boiler

作　　者：杨生虎 周磊 马国伟 李明 YANG Sheng-hu;ZHOU Lei;MA Guo-wei;LI Ming(State energy Pingluo Power Generation Co.,Ltd.Shizuishan 753400,China;National EnergyGroup Science and Technology Research Institute Co,Ltd.Yinchuan 750004,China)

机构地区：[1]国能平罗发电有限公司,宁夏石嘴山753400 [2]国家能源集团科学技术研究院有限公司银川分公司,宁夏银川750004

出　　处：《全面腐蚀控制》2024年第12期135-139,共5页Total Corrosion Control

摘　　要：我国现役燃煤电站锅炉大多采取低NO_(X)燃烧技术导致炉膛频繁发生高温腐蚀现象,已严重影响机组安全稳定运行。本文通过现场试验研究了贴壁风对近壁面还原性气体(H_(2)S、CO)的影响,结果表明:前墙、侧强贴壁风前墙、侧强贴壁风投运后,均可有效降低炉膛主燃区、燃尽区H_(2)S、CO浓度。对于冷灰斗区域,一次风贴壁风及矩形喷口的二次风贴壁风投运后,没有显著作用。Most of the active coal-fired power station boilers in China adopt low NO_(X)combustion technology,which leads to frequent high temperature corrosion in the furnace,which has seriously affected the safe and stable operation of the units.In this paper,the influence of wall wind on reducing gas(H_(2)S,CO)on the near wall is studied through field tests.The results show that the front wall,side wind front wall and side wall wind can effectively reduce the concentration of H_(2)S and CO in the main combustion area and exhaust area of the furnace.For the cold ash bucket area,there is no significant effect after the primary wind wall wind and rectangular nozzle secondary wind wall wind operation.

关 键 词：贴壁风 锅炉 还原性氛围 

分 类 号：TK16[动力工程及工程热物理—热能工程]