雾化喷嘴是烟气脱硫装置的核心部件，研发高效雾化喷嘴对提高脱硫效率具有重要意义．文中以空气为石灰石浆液的雾化工质，使用激光粒度分析仪和高速数码相机，对一种新型双流喷嘴的雾化及流量特性进行了实验研究，得到了气相压力、液相压力、浆液浓度与喷嘴雾化角、平均粒径、颗粒均匀度间的耦合关系．结果表明，气相压力相对于液相压力和浆液浓度对雾化特性的影响更为明显; 喷嘴流量随液相压力的升高而增大，随气相压力的升高而减小，浆液浓度对其影响较小．

Atomizing nozzle is the core component of FGD ( Flue Gas Desulfurization) devices.In order to improvethe desulfurization efficiency,efficient atomization nozzles should be developed.In this paper,by taking air as theatomization medium of limestone slurry and by using a laser particle size analyzer as well as a high-speed digitalcamera,the atomization and flux characteristics of a new-type two-fluid nozzle were experimentally investigated,and the coupling relationships between the flux parameters ( such as air pressure,liquid pressure and limestoneslurry mass concentration) and the atomization parameters ( such as nozzle spray angle,average particle size andparticle uniformity) are revealed.The results indicate that air pressure has greater effect on the atomization characteristicsthan the liquid pressure and the limestone slurry mass concentration,and that the nozzle flow rate,which isinsensitive to the limestone slurry mass concentration,increases with the increase of liquid pressure,but decreaseswith the increase of air pressure.