CAJ | 학술논문

利用Fluent 13,采用标准k-ε模型和QUICK三阶差值的SIMPLE算法对某600 MW机组的氨法脱硫喷淋塔烟气流场进行数值模拟。在不考虑喷淋液离散相对烟气的影响情况下,对比分析了不同的烟气入口角、塔径与烟气流动高度比、出口方式和流场优化环位置对烟气流场的影响。结果表明,烟气入口角的增大、径高比的减小、顶出口方式和优化环与喷淋液膜区距离的增大,都可以使烟气流场更加均匀。为氨法脱硫喷淋塔的设计和运行提供一定的指导作用。
이용Fluent 13,채용표준k-ε모형화QUICK삼계차치적SIMPLE산법대모600 MW궤조적안법탈류분림탑연기류장진행수치모의。재불고필분림액리산상대연기적영향정황하,대비분석료불동적연기입구각、탑경여연기류동고도비、출구방식화류장우화배위치대연기류장적영향。결과표명,연기입구각적증대、경고비적감소、정출구방식화우화배여분림액막구거리적증대,도가이사연기류장경가균균。위안법탈류분림탑적설계화운행제공일정적지도작용。
Flow field in an ammonia desulphurization spray scrubber which to be part of some 600 MW unit has been simulated numerically by using the software of FLUENT 13 . To solve the governing equations for flow field,standard k-ε model and QUICK interpolation scheme are applied by SIMPLE algorithm. Without regard to the influence of spray liquid on flue gas,results are compared and analyzed at different entrance angles,tow-er diameter height ratio,the way of flue gas out and the position of optimize ring. Results show that the flow field is homogenized by the influence of the increase of entrance angle;the decrease of diameter height ratio;u-sing by top way flue gas out;more distance between optimize ring and spray liquid film zone separately. The numerical simulations provide the guidance for the design and operation in spray scrubber of ammonia flue gas desulphurization.