双流体喷嘴与旋转雾化器雾化性能对比实验研究

Investigation on the atomization performance comparison of two-fluid atomizer with rotary atomizer

中文关键词: 双流体喷嘴  旋转雾化器  脱硫废水  雾化性能

英文关键词: two-fluid nozzle  rotary atomizer  desulfurization wastewater  atomization performance

中文摘要:

      双流体喷嘴和旋转雾化器是利用热烟气蒸发处理脱硫废水的两种常用雾化设备，利用PDA测试系统，对比测试分析了雾化流量、脱硫废水无机盐含量及悬浮物浓度等对雾化性能的影响，并结合两类喷嘴的雾化机理分析了雾化性能差异的原因。结果表明：与双流体雾化喷嘴相比，旋转雾化器具有更好的适应流量变化及雾化含悬浮性颗粒脱硫废水的性能，在SS浓度低于50000mg/L范围内，仍能维持良好的雾化性能，但双流体喷嘴则无法正常雾化；雾化TDS浓度在40000 mg/L以下的中低盐脱硫废水，旋转雾化器和双流体喷嘴均能维持良好的雾化性能，但雾化TDS含量高达60000 mg/L以上经预浓缩后的高盐废水，雾化性能均有所变差。

英文摘要:

      The two-fluid nozzle and rotary atomizer are two common types of atomization equipment that uses hot flue gas to evaporate desulfurization wastewater. This article uses a PDA test system to compare and analyze the atomization flow rate, inorganic salt content of the desulfurization wastewater, and the concentration of suspended matter. Influence of atomization performance, combined with the atomization mechanism of the two types of nozzles, analyzed the reasons for the difference in atomization performance. The results show that compared with the two-fluid atomizing nozzle, the rotary atomizer has better performance in adapting to the flow rate change and atomizing the desulfurization wastewater containing suspended particles, and it can still maintain good in the range of SS concentration below 50000mg/L Atomization performance, but the two-fluid nozzle can not be atomized normally; atomization of low and medium salt desulfurization wastewater with TDS concentration below 40000 mg/L, rotary atomizer and two-fluid nozzle can maintain good atomization performance, but The high-salt wastewater with pre-concentrated TDS content of up to 60,000 mg/L in atomization has deteriorated in atomization performance.