摘要
针对某300 MW机组湿法脱硫塔入口存在的结垢现象,采用计算流体力学理论和FLUENT软件,对其进行了流场数值模拟。塔内烟气湍流采用雷诺时均的纳维–斯托克斯方程描述,液滴运动由拉格朗日离散相模型描述。通过对不同布置的导流板结构分析表明,在烟道内合理布置导流板,可以有效改善吸收塔入口烟道及塔内的流场分布,从而得到比较理想的流场分布结果,进而有效避免烟道中可能存在的结垢现象,为工程的改造和实施提供参考。
To solve gypsum sedimentation of 300 MW wet flue gas desulfurizaiton （WFGD） unit, numerical simulation was carried out with computational fluid dynamics （CFD） theory and FLUENT software. The turbulent flow of flue gas in the scrubber was described by Reynolds-averaged Navier-Stokes equations, and the motion of slurry drops was described by Lagrangian discrete phase model. By reasonable arrangement of different deflector, flow characteristics of entry section and scrubber could be greatly improved, ideal flow characteristics of this section were received; Gypsum sedimentation at entry section was avoided effectively. As a result, references and advices were given to the reconstruction and execution of this project.
出处
《能源工程》
2011年第6期48-51,57,共5页
Energy Engineering
关键词
烟气脱硫
优化
数值模拟
导流板
flue gas desulfurization
optimization
numerical simulation
deflector
