湿法脱硫螺旋喷嘴雾化性能

试验以螺旋喷嘴为对象,建立了由地下水池、潜水泵、管路、阀部件、流量计、数据处理系统等组成的试验装置,利用马尔文激光粒径分析仪、电磁流量计、液体压力传感器等仪器,系统研究了螺旋喷嘴的体积流量、雾化粒径、雾化角、雾化粒径分布等特性.试验结果表明:螺旋喷嘴体积流量与压力的平方根成线性关系;雾化粒径随压力呈幂函数变化,2种孔径的螺旋喷嘴,雾化粒径与压力具有相似的变化规律;压力大于40kPa后,雾化角基本不变;总体上,径跨随压力增加而增大,分散度增加,雾化质量变差.

Spray characteristics of spiral nozzles used in wet flue gas desulfurization system

As an object the spiral nozzle was investigated.Test device consisting of underground tank,submersible pump,pipeline,valve,flowmeter,and data processing system was established.By using Malvern laser particle size analyzing instrument,electromagnetic flowmeter and pressure sensor,a systematic study was performed on the characteristics of spical nozzle,including volumetric flow rate,atomization particle diameter,atomization angle,and atomization particle distribution,etc.The result indicates that the variation of volumetric flow rate is linear with the square root of pressure and the particle diameter is in power function relation with the pressure.For spiral nozzles with different aperture,the rules of the variation of atomization particle diameter with pressure are similar.The atomization angle varies very little when the pressure is over 40kPa.As a whole,diameter span increases with pressure,which indicates that the degree of dispersion increases and the quality of atomization is poorer.