老化油物性分析及脱水技术研究

Property analysis of aging oil and study on its dehydration technology

采用吸附分离法测定了老化油和原油样品的w（沥青质）和w（胶质）,对二者进行全烃气相色谱对比分析,同时测定了油样的w（水）和黏度,探讨了老化油样品和原油样品性质的差异,并通过实验提出了老化油蒸发脱水的最佳处理温度,论证了老化油蒸发脱水工艺的效果。结果表明,与原油相比,老化油中w（沥青质）、w（胶质）、黏度值、w（水）均较高,进而使老化油的稳定性增强,给脱水技术带来困难;w（水）=60.3%的老化油热沉降之后w（水）=27.5%,初馏点为102--103℃,最佳脱水温度为155℃,当400g和13.6kg含水老化油运用蒸馏方法分别处理61、91min后,可使其w（水）〈0.3%。

The content of asphalting and pectin in aging oil and crude oil samples was determined by adsorption separation process and we made a comparative analysis between them by whole hydrocarbon gas chromatographic.We also determined the moisture content and viscosity of them and discussed their differences in nature.The optimum temperature of aging oil evaporation dehydration is put forward through the experiment and it demonstrates the effect of the aging oil evaporation dehydration process.The result shows that the asphalting content,pectin content,viscosity value and moisture content are all higher in aging oil compared with the crude oil.It enhances the stability of the aging oil and makes it difficult to dehydration technology.After thermal subsidence,the moisture content of the aging oil changed from 60.3%to 27.5%,the initial boiling point is 102~103℃ and the optimum dehydration temperature is 155℃.The moisture content of 400 g and 13.6kg aqueous aging oil could be less than 0.3% after 61,91 min later by distillation method.