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已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。
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.
作者
吕俊复
王君峰
姜孝国
鲁佳易
罗勇军
李文凯
张守玉
柯希玮
LYU Junfu;WANG Junfeng;JIANG Xiaoguo;LU Jiayi;LUO Yongjun;LI Wenkai;ZHANG Shouyu;KE Xiwei(Department of Energy and Power Engineering,Tsinghua University,Haidian District,Beijing 100084,China;Harbin Boiler Company Limited,Harbin 150046,Heilongjiang Province,China;Dongfang Boiler Group Company Limited,Zigong 643001,Sichuan Province,China;Shanghai Boiler Works Company Limited,Minhang District,Shanghai 200245,China;China Electric Power Planning&Engineering Institute,Xicheng District,Beijing 100120,China;Shanxi Research Institute of Huairou Laboratory,Taiyuan 030000,Shanxi Province,China;Beijing Huairou Laboratory,Huairou District,Beijing 101400,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2024年第17期6883-6899,I0014,共18页
PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING
基金
怀柔实验室重大专项项目。
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
ultra-supercritical
circulating fluidized bed boiler
fluidization optimization
hydrodynamic force
deep peaking
