A wetted wall cyclone using an airblast atomizer upstream of the inlet was designed as an improvement of a wetted wall cyclone developed by White et al. in 1975, which uses liquid injection through a port on the wall of the cyclone inlet. In the course of this project, many changes to different aspects of the White-type cyclone design and operation were considered. These included inlet configuration, liquid delivery, porous media, surface finishes and coatings, outlet skimmer design, and cyclone body length. The final airblast atomizer cyclone (AAC) design considered has an aerosol-to-hydrosol collection efficiency cut-point of 1.6 ?m with collection efficiencies at 2 and 3 ?m of 65% and 85%, respectively. The efficiency reported for the White-type cyclone for single Bacillus globigii spores that have a particle size of about 1 ?m was approximately 81.8%. The aerosol-to-aerosol transmission efficiency for the AAC configuration was found to be approximately 50% for 1 ?m diameter particles as compared with 70 ? 100% for the White-type cyclone. A time response test was performed in which the White-type (ca. 2003) cyclone had an initial response of 3 minutes for a condition where there was no liquid carryover through the cyclone outlet and 8 minutes on average with hydrosol carryover. The decay response of the White-type cyclone was 1.25 minutes for non-liquid carryover conditions. The AAC had an initial response of 2.75 minutes and a decay response of 2.5 minutes. The shortened version of the AAC had an initial response of 1.5 minutes and a decay response of 1.25 minutes. There was no liquid carryover observed for any tests of this cyclone configuration. Power consumption tests were performed comparing pressure drops across different variations of White-type cyclones (circa 2003 and 1999) including a variation with an electrical discharge machined (EDM) inlet profile, that reduces the pressure drop at a nominal air flowrate of 780 L/min from 18 inH2O for the basic White-type cyclone (ca. 2003) to 16 inH2O with use of the EDM inlet. Two different variations of White-type cyclones were found to have pressure drops of 25 inH2O and 18 inH2O at an air flowrate of 780 L/min.
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机译：设计了在入口上游使用鼓风雾化器的湿壁旋风分离器，作为对White等人开发的湿壁旋风分离器的改进。 1975年，它通过旋风分离器入口壁上的端口使用液体注入。在该项目的过程中，考虑了White型旋风分离器设计和操作各个方面的许多变化。其中包括入口配置，液体输送，多孔介质，表面处理和涂层，出口分离器设计以及旋风分离器主体长度。最终考虑的鼓风雾化器旋风分离器（AAC）设计的气溶胶-水溶胶捕集效率下限为1.6 µm，在2和3 µm处的捕集效率分别为65％和85％。据报道，白色型旋风分离器对于粒径约为1μm的单个球形芽孢杆菌孢子的效率约为81.8％。发现对于直径为1 µm的颗粒，AAC构型的气溶胶传输效率约为50％，而70Ω 100％为白色旋风分离器。进行了一个时间响应测试，其中White型（约2003年）旋风分离器在没有液体从旋风分离器出口带走的情况下具有3分钟的初始响应，而在水溶胶带走的情况下平均具有8分钟的初始响应。在非液体残留条件下，白色旋风分离器的衰减响应为1.25分钟。 AAC的初始响应为2.75分钟，衰减响应为2.5分钟。 AAC的缩短版本的初始响应为1.5分钟，衰减响应为1.25分钟。对于该旋风分离器配置的任何测试均未观察到液体残留。进行了功耗测试，比较了White型旋风分离器不同变化（大约在2003年和1999年）上的压降，包括带有放电加工（EDM）进气口曲线的变化，该变化在780 L / min的额定空气流量下降低了压降。对于基本的白色型旋风分离器，从18 inH2O（约2003年）到使用EDM进口的最小16 inH2O。发现两种不同的白色型旋风分离器在空气流量为780 L / min时具有25 inH2O和18 inH2O的压降。
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