超超临界循环流化床锅炉技术研发进展
Research and Development of Ultra-supercritical Circulating Fluidized Bed Boiler
吕俊复 1王君峰 1姜孝国 2鲁佳易 3罗勇军 4李文凯 5张守玉 6柯希玮7
作者信息
- 1. 清华大学能源与动力工程系,北京市海淀区 100084
- 2. 哈尔滨锅炉厂有限责任公司,黑龙江省哈尔滨市 150046
- 3. 东方电气集团东方锅炉股份有限公司,四川省自贡市 643001
- 4. 上海锅炉厂有限公司,上海市 闵行区 200245
- 5. 电力规划设计总院,北京市西城区 100120
- 6. 怀柔实验室山西研究院,山西省太原市 030000
- 7. 北京怀柔实验室,北京市怀柔区 101400
- 折叠
摘要
随着技术进步和对节能减排需求的提升,更先进的超超临界循环流化床(circulating fluidized bed,CFB)锅炉技术成为行业发展趋势.该文探讨了超超临界CFB锅炉技术的设计理念,包括流态化燃烧、水动力系统、污染物控制及系统集成等关键技术.分析大尺寸炉膛内流态化燃烧的均匀性和燃尽性问题,探讨了不同炉型燃烧系统设计;研究超超临界压力下低质量流速垂直管圈水动力系统的设计方案;提出在大截面和高炉膛条件下污染物控制的设计思路;通过对锅炉燃烧技术、热力系统及辅助系统的耦合特性分析,指出燃烧侧与蒸汽侧系统设计的优化方向.基于对关键技术的深入研究和超临界CFB锅炉的实践经验,形成了多种超超临界CFB技术方案,多个采用不同技术方案的项目己进入到工程应用阶段,其中可靠、灵活、清洁和高效是设计中的关键考量.期望这些多样化的超超临界CFB技术路线能够在未来发展中展现出灵活性和低碳优势.
Abstract
With the increase of technological progress and the demand for energy conservation and emission reduction,a more advanced ultra-supercritical circulating fluidized bed(CFB)boiler technology has become the development trend of the industry.This paper delves into the design philosophy of ultra-supercritical CFB boiler technology,including key technologies such as fluidized combustion,hydrodynamic system,pollutant control,and system integration.The uniformity and burnout of fluidized combustion in large-size furnace are analyzed,and the design of combustion system in different furnace types is discussed.The design schemes of the hydrodynamic system for vertical tube bundles with low mass flow rate under ultra-supercritical pressure conditions are investigated.Design concepts for pollutant control under conditions of large cross-section and high furnace chamber are proposed.Through analyzing the coupling characteristics of boiler combustion technology,thermal system and auxiliary system,the optimization direction of combustion-side and steam-side system design is indicated.Based on in-depth research of key technologies and practical experience of supercritical CFB boilers,a variety of ultra-supercritical CFB technical schemes have been formed.Multiple projects using different technical solutions have entered the engineering application stage,where reliability,flexibility,cleanliness,and efficiency are key considerations in the design.It is expected that these diverse ultra-supercritical CFB technical routes will demonstrate flexibility and low-carbon advantages in future development.
关键词
超超临界/循环流化床锅炉/流态优化/水动力/深度调峰Key words
ultra-supercritical/circulating fluidized bed boiler/fluidization optimization/hydrodynamic force/deep peaking引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据