关键词:

细颗粒, 润湿剂, 润湿性能, 捕集

Abstract:

The interaction of fine particles from oil combustion with water droplets was studied in a flow chamber experimentallyA novel fine particle capture technique with wetting agents was developed to investigate particle number concentration and size distribution before and after the interactionThe characteristics of particle capture with different wetting agents were also evaluatedThe particle size distribution and concentration were measured by electrical low pressure impactor（ELPI）.The dependence of fine particles capture mechanism on microstructure and elemental compositions was analyzed with SEM and EDSThe results showed that the capture efficiency appeared to be closely related to the physicochemical properties of fine particlesThe SEM and EDS analysis showed that particles from oil combustion were basically spherical，carboncontaining hydrophobic particlesAnd the capture efficiency of fine particles with plain water droplets was low，but could be enhanced with wetting agents added to the atomized dropletsThe capture efficiency could increase by 15% with adding Silanol w22 against plain water dropletsThe investigation could be used to test and choose different wetting agents for fine particles capture.

Key words:

细颗粒, 润湿剂, 润湿性能, 捕集