中国电机工程学报2018，Vol.38Issue(2)：406-412,7.DOI:10.13334/j.0258-8013.pcsee.162222
白马600MW超临界CFB锅炉二次风系统均匀性试验与数值模拟
Experimental and Numerical Simulation on the Uniformity of Secondary Air System of Baima 600MW Supercritical CFB Boiler
摘要
Abstract
As a new type of clean combustion technology,circulating fluidized bed is characterized by high combustion efficiency,wide burnable suitability and low pollutant emission.The circulating fluidized bed development is in the direction of boilers with large-scale parameters and capacity.At the same time,circulating fluidized bed is confronted with the uneven combustion problem,which have close correlation with the uniformity of secondary air system.The research object of this paper is the secondary air system of Baima 600MW supercritical CFB boiler.Through experimental measurement and numerical simulation method,it is found that secondary air distribution of the existing system is uneven.The measurement results of cold-state furnace show that the air damper adjustment could improve the uniformity of the secondary air and it is easy to implement on the existing unit.However,it would also increase flow resistance of the branch pipe.By numerical simulation method,the secondary air system was studied,and the results show that the exit velocity deviation rate of the secondary air system could less than 5％ by adjusting the resistance of partial branch pipe.This improvement method is suitable for the new unit design.关键词
超临界循坏流化床(CFB)锅炉/二次风系统/均匀性/偏差/优化设计/流动阻力Key words
supercritical circulating fluidized bed(CFB) boiler/secondary air system/uniformity/deviation/optimization/flow resistance分类
能源科技引用本文复制引用
周金良,王泉海,严谨,郭强,吕卓,张弋,卢啸风..白马600MW超临界CFB锅炉二次风系统均匀性试验与数值模拟[J].中国电机工程学报,2018,38(2):406-412,7.基金项目
国家重大研发计划项目(2016YFB0600201).The National Key Research & Development Program of China (2016YFB0600201). （2016YFB0600201）
