新型防磨装置对省煤器磨损减轻的模拟分析

Effect of a New Anti-abrasion Device on Wear Reduction of the Economizer

利用Ansys Fluent软件研究了省煤器内烟气流场的变化情况,确定了局部烟气流速过高区域,烟气流速过高会对省煤器管束造成极大的磨损,为此提出了一种新型防磨装置,并通过数值软件模拟了该防磨装置对省煤器管束磨损的减缓效果.结果表明:在省煤器加装该防磨装置后,局部烟气流速过高处的烟气流速减至8m/s,省煤器管束的局部磨损问题得到了明显的改善.

Ansys Fluent software was used to study the changes of flue gas flow field in an economizer,so as to determine the local area where the tube bundles had been worn by too high velocity of flue gas,following which,a new anti-abrasion device was proposed and its effectiveness was simulated by numerical method.Results show that after the anti-abrasion device is installed,the maximum flue gas velocity has been reduced to 8m/s,resulting in obvious reduction of local abrasion in the tube bundles.