CAJ | 학술논문

在中等强度驻波声场中,对燃煤可吸入颗粒物进行团聚清除实验研究.系统研究声场频率、声压级、可吸入颗粒质量浓度及颗粒在声场中的停留时间对团聚清除效率的影响.实验结果表明:颗粒在声场中团聚的最佳声波频率为1 416 Hz;声压级越高越有利于颗粒的团聚,声压为128 dB时颗粒质量清除效率高达27.8%;可吸入颗粒质量浓度增大,颗粒清除效率降低;颗粒在声场停留时间为9-11s时,团聚清除效率达到最大值.颗粒粒径影响声波团聚过程,粒径<1.1 μm与4.7-10μM颗粒的清除效率高于1.1-4.7μM颗粒的清除效率.
재중등강도주파성장중,대연매가흡입과립물진행단취청제실험연구.계통연구성장빈솔、성압급、가흡입과립질량농도급과립재성장중적정류시간대단취청제효솔적영향.실험결과표명:과립재성장중단취적최가성파빈솔위1 416 Hz;성압급월고월유리우과립적단취,성압위128 dB시과립질량청제효솔고체27.8%;가흡입과립질량농도증대,과립청제효솔강저;과립재성장정류시간위9-11s시,단취청제효솔체도최대치.과립립경영향성파단취과정,립경<1.1 μm여4.7-10μM과립적청제효솔고우1.1-4.7μM과립적청제효솔.
Middle intensity acoustic field was employed to remove the inhalable particles emissions from coal combustion plants. The effects of the standing wave frequency, the sound pressure level (SPL) , the particles mass concentration and residence time on the agglomeration removal efficiency were studied systemically. The experimental findings show that the optimal frequency of particle agglomeration is 1 416 Hz. The removal efficiency increases as the SPL is higher, and it is up to 27.8% when the SPL is 128 dB. The removal efficiency decreases with the increasing of inhalable particles mass concentration. The optimal removal efficiency is obtained at the residence time of 9-11 s. The particles with diameter of 1.1 -4.7 μm are difficult to be removed, compared with those with diameter less than 1.1 μm and 4.7-10 μm.