加装低温省煤器后锅炉尾部90°弯道流场的数值模拟

为解决某电厂300MW机组锅炉低温省煤器布置问题,通过分析现场情况,提出在锅炉尾部90°弯道出口附近布置低温省煤器方案,并使用Fluent软件对锅炉尾部90°弯道内烟气流场进行了三维数值模拟,并对尾部烟道的结构进行了优化。为低温省煤器的布置创造了条件。对同类型电厂改造具有一定的借鉴意义。

The flow field numerical simulation of economizer 90 degree curved tail flue of boiler after

In order to solve the layout problem of low-temperature economizer for 300MW units in a power plant,the layout scheme of low-temperature economizer in 90 degree curved tail flue exit of boiler is proposed through analytical site condition,add numerical simulation on gas flow field in 90 degree curved tail flue of boiler is carrid out by FLUENT software and the relational structure optimization is achieved in this paper.The studies indicates that vortex is created in 90 degree curved tail flue of boiler,and increase the curve flaring size into a limited space can make the flue gas velocity tend to be uniform in and around curve.Created conditions to arrangement of low-temperature economizer.And it can serve as a reference for the retrofit of the power plants of the same type.