我国燃煤工业锅炉现状及分析

不同类型燃煤工业锅炉具有各自的技术优势及应用范围,为了给用户在项目立项、选择锅炉时提供正确参考,阐述了3种主流燃煤工业锅炉的技术特点、应用现状,并着重针对循环流化床锅炉和现代煤粉工业锅炉,从燃烧组织方式和技术特点两方面进行了系统的技术对比分析。经分析认为,流态化燃烧组织是循环流化床锅炉的技术基础,浓相室燃燃烧组织是现代煤粉工业锅炉的技术基础。依托密相床炉料的巨大热容量,循环流化床锅炉定位于处理高灰劣质燃料;依托低变质高活性清洁煤粉快响应着火喷燃,现代煤粉工业锅炉定位于油(气)锅炉的备份及互换。因此,二者非取舍而是互为补充的关系。

Progress and situation analysis of coal fired industrial boilers in China

In China,coal fired industrial boilers are dominated in industry.In order to provide the reference option for user choosing appropriate boilers in the project,the technical features and application status of three different types of coal fired industrial boilers were discussed.Circulating fluidized bed boiler and pulverized coal fired industrial boiler were analyzed in terms of combustion method and technical characteristics.It was thought that fluidized combustion is the basis of circulating fluidized bed boiler technology,and dense phase chamber combustion is the foundation of modem pulverized coal boiler.Relying on the huge heat capacity of dense bed,circulating fluidized bed boiler is suited for processing high ash fuel;and likely,dependent on low rank,high activity,and clean pulverized coal jet combustion ignition and fast response,pulverized coal fired industrial boiler is fit for oil (gas) boiler's backup and swapping.Therefore,circulating fluidized bed boilers and pulverized coal industrial boilers have their own scope of application,the two technologies are not trade-offs but complementary relationship.