Experimental Research On The Microwave Treatment Of Heavy Oil With Salt

Microwave treatment of heavy oil,which has lots of advantages such as high efficiency, energy-saving and pollution free, is very important to the oil production and environmental protection. Adding salt to improve treatment efficiency of microwave dehydration has been a new way to treat heavy oil.The article made a systematical research on the mechanism of effects of salt on microwave dehydration.First of all, using experimental method research dehydration rate in different ways(gravity settling, microwave radiation, add salt to microwave radiation). Meanwhile, influence of microwave dehydration element including ion nature, valence, radius and concentration experiments of microwave parameters (power and action time)was studied by a large number of experimental studies.By using uniform design, the relation between microwave power, action time, salt concentration, ionic radius and dehydration rate was studied, and the empirical formula was fitted. Finally, the model of emulsion droplets and the force model of inorganic ions in the electromagnetic field were established.Also, the mechanism of salt for microwave demulsification from the perspective of emulsifying film strength was analyzed. And the mathematical modle is be built, microwave inducing salt heavy oil reactivity mechanism is analysed from temperature field.Experimental results and theoretical analysis shows that a small amount of salts can significantly promote the effect of microwave dehydration. Microwave parameters and the ion concentration are the main factors which promotes the effects,and inorganic salts’effects are related to ionic radius, valence, the activity coefficient and concentration of salts. The reason is that mineral ions in the electromagnetic field are making periodic reciprocating motion,which continuously reduce the impact strength of emulsion film, even to break, and achieves the dehydration effects.