重油掺水乳化分散度的研究

70年代以来人们研究和开发了油掺水乳化燃烧的新技术 ,包括油水乳化方法和高效表面活性剂的研制1～ 3] ,并在燃油设备上使用了这一技术。此外 ,国内外学者对重油掺水燃烧技术的燃烧机理进行了较多的研究4 ,5] ,对乳化重油分散体系性质系统实验研究较少。工业炉窑燃用掺水乳化重油效果的好坏 ,除了与其粘度、稳定性有关外6,7] ,与乳化重油的分散相(水 )微粒大小也有很大关系。水在油中分散得越均匀 ,分散的颗粒越微细 ,其在燃烧过程中的“微爆”效果则越佳 ,雾化效果越好 ;并且 ,分散体系中分散相颗粒粒径与比表面积的大小也决定着分散相…

STUDY OF DISPERSITY OF EMULSIFIED HEAVY-OIL (EHO)

The disperse phase (water) droplet size of Emulsified Heavy-Oil (EHO) has a significant effect on the Combustion of Water-in-Heavy oil Emulsion. In this paper, the disperse degree of disperse phase in EHO is measured in various experimental conditions, and the relationship of the disperse degree with the agitating degree is investigated. The following results are obtained: with the increases of agitating speed, agitating time and agitator diameter, disperse degree become better. The experimental results show that the disperse degree becomes much better when n is 1*#200r/min and D m is 55mm. The D SV of disperse phase in EHO will decrease as the increasing of agitating speed and agitator diameter, which is consistent with the energy theory. Then according to dimensional analysis, an experimental formula to calculate the surface area of water particle per unit volume is given. 5 figs. 4tabs. 9refs.