热力发电2016，Vol.45Issue(7)：104-109,114,7.DOI:10.3969/j.issn.1002-3364.2016.07.104
对冲燃烧锅炉水冷壁高温腐蚀运行调整
Operation adj ustment for high temperature corrosion in water wall of supercritical opposed firing boiler
周科 1佘园元 1鲁芬 1李建设 2陈俊彬2
作者信息
- 1. 西安热工研究院有限公司，陕西 西安 710032
- 2. 福建省鸿山热电有限责任公司，福建 石狮 362700
- 折叠
摘要
Abstract
Due to the strong reducing atmosphere and H2S formation around the water wall of a supercritical opposed firing boiler,serious high temperature corrosion occurred in the water walls.To solve this prob-lem,the single factor alternate method was applied to experimentally investigate the effects of main operat-ing parameters on H2 S concentrations around side water wall.The results show that,on the basis of cus-tomary boiler operating condition,after a series of regulations,such as weakening the tertiary air swirl of the main burner appropriately,distributing the tertiary air flow as bowl type,strengthening the secondary air swirl of the main burner appropriately,increasing the swirling air ratio of the OFA burner,reducing di-rect air ratio of the OFA burner,increasing the running oxygen concentration appropriately,distributing the mills output uniformly,increasing the primary air velocity appropriately,and reducing the coal fineness, the H2 S concentration around the side water wall decreased from 876.5 mg/m3 to 352.2 mg/m3 .The at-mosphere around the water wall surface was greatly improved,and the security of the boiler operation was enhanced.关键词
锅炉/对冲燃烧/水冷壁/高温腐蚀/运行氧量/燃尽风/运行调整Key words
boiler/opposed firing/water wall/high temperature corrosion/operation oxygen content/over fire air/operation adj ustment分类
能源科技引用本文复制引用
周科,佘园元,鲁芬,李建设,陈俊彬..对冲燃烧锅炉水冷壁高温腐蚀运行调整[J].热力发电,2016,45(7):104-109,114,7.
