Numerical Study of Furnace Process of a 600 MW Pulverized Coal Boiler under Low load with SNCR Application

摘要：

Numerical simulation of flow,heat transfer,and combustion process in a 600 MW pulverized coal boiler under low load is performed using Computational Fluid Dynamics (CFD) code Fluent.The distributions of temperature and species were obtained and their influences on Selective non-catalytic reduction (SNCR) were analyzed.The results indicate that the furnace temperature changed significantly as the operation load declines.The furnace space with proper temperature for SNCR reaction becomes lower with decreasing of operation load.As the load falls off,the available O2 concentration for SNCR reactions rises gently and the initial NOx concentration for SNCR reactions debases slightly.These variations can have some influence on the SNCR process.For the upper furnace where the temperature is suitable for SNCR reactions,the CO concentration is close to 0 under different load.Consequently,the SNCR process will not be affected by CO based on the calculation in this work.

关键词： furnace process low load numerical simulation selective non-catalytic reduction

作者: Q.X.Cao Y.Shi H.Liu C.H.Yang S.H.Wu

作者单位: Harbin Institute of Technology,Harbin 150001,China

会议类型: 国际会议

会议名称: The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)

会议地点: 哈尔滨

会议语种:英文

页码: 108-112

在线出版日期: 2011-07-19（万方平台首次上网日期，不代表论文的发表时间）