@@ 引言rn目前我国在控制粉尘排放方面取得了较好的成效,燃煤锅炉等工业排放的烟气粉尘总浓度一般均能够满足国家排放标准.但是,现广泛采用的静电除尘设备、旋风分离器等均难以除去烟气中的超细颗粒[1].%Acoustic agglomeration is a potential aerosol pre-conditioning technology which can greatly reduce particulate emission. Experimental research on this technology is extensive. However, most of the existing numerical simulations are slow and not precise enough. A numerical model of acoustic agglomeration was developed based on orthokinetic and hydrodynamic mechanisms, and was solved by using the newly developed quadrature method of moments (QMOM). The results showed that this method was much faster and more precise than the discrete method. Then, the numerical simulation of acoustic agglomeration was validated by using experimental data. The effectiveness of acoustic agglomeration was sensitively dependent on acoustic frequency. The optimal frequency for coal-fired fly ash was about 1500 Hz. In addition, the results showed that the effectiveness of acoustic agglomeration increased rapidly as the standard deviation of particle size distribution increased. However, agglomeration was slightly enhanced with the increase in temperature.
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