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Flow field is a key factor affecting the removal efficiency of SO2 from wet flue gas desulfurization absorption tower. In order to meet the requirements of ultra-low emission standards,the flow field optimization of wet desulfurization absorber is of great importance. The CFD method is applied to simulate the flow field of a wet desulfurization absorber for a 2 × 660 MW unit in a coal-fired power plant. The existing problems of the flow field in the absorber before optimizing are analyzed,and then the flow field is optimized. In the optimization scheme,flow guiding vanes are set in the inlet and outlet flue ducts,and a porous flow distributor is set in the tower. The flow field has been significantly improved after optimizing,which is conducive to improve the desulfurization efficiency,reduce slurry deposition and decrease flow resistance. Based on the similarity theory of fluid mechanics,a model of reduced proportion absorption tower is built to carry out flow field experiment. The velocity distribution uniformity of the experiment is similar to that of numerical simulation. The feasibility of the flow field optimization scheme is verified,and it can provide guidance for the design of absorption tower.
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Basic Information:
China Classification Code:X773
Citation Information:
[1]YANG Ding,YE Xinglian,GUO Jun.Numerical simulation and model experimental research on optimizing the flow field in wet flue gas desulfurization[J].Electric Power Technology and Environmental Protection,2018,34(02):9-13.
Fund Information:
福建省自然科学基金资助项目(2017J06023)
2018-04-15
2018-04-15