以MAN B&W 6S35ME-B9低速柴油机SCR反应器的吹灰装置为研究对象，研究吹灰装置的空间布置以及工况，建立吹灰装置喷孔的几何模型，分析喷孔在系统中的吹灰过程，建立喷孔的有限元模型。采用N-S方程以及Realizable k-ε两方程湍流模型，对喷孔进行有限元计算，采用速度与压力耦合的Coupled方法进行求解。分别模拟计算了孔径、压力、耗气量、气耗比、吹扫范围的关系，总结出孔径与喷射压力对于吹灰装置性能的影响，为吹灰装置的优化设计提供参考依据。
Selecting the blowing device of MAN B&W 6S35ME-B9 low-speed diesel engine of SCR reactor as the research object, researching the spatial arrangement of blowing device and operations, establishing geometric model of soot blowing device nozzle and the finite element model of nozzle by analyzing the blowing process. Using N-S equation and k-ε equation turbulence model, the finite element method is used to calculate thenozzle, the Coupled method is used to solve the velocity and pressure coupling. The relationship between nozzle size, pressure, gas consumption, gas consumption ratio and purge range is simulated, concluding the influence of nozzle diameter and injection pressure on the performance of the soot blower. These provide reference for optimum design of soot blowing device.
2018,40(4): 88-93 收稿日期：2017-05-27
DOI：10.3404/j.issn.1672-7649.2018.04.018
分类号：U262
作者简介：杨智远(1980-),男,博士,讲师,研究方向为船舶柴油机尾气排放控制
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