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合成并应用过渡金属盐改性离子液体[bmim]Br.FeCl_3对稠油进行了改质降粘试验,研究了离子液体浓度、FeCl3摩尔分数、反应温度、反应时间对稠油降粘率、组成、平均分子质量的影响。结果表明,离子液体浓度、反应温度和反应时间对降粘率影响很大,碱性的离子液体对稠油改质效果较好,在较低温度80℃、较短反应时间18h、离子液体浓度为5%(w)、FeCl3摩尔分数为0.4的条件下,经离子液体处理后稠油降粘率可达61.7%,稠油的饱和烃、芳香烃、胶质含量增加,而沥青质含量、平均分子质量明显减小,导致了稠油粘度的降低。
Synthesis and application of transition metal salt modified ionic liquid [bmim] Br.FeCl_3 on the heavy oil viscosity reduction experiments were conducted to study the concentration of ionic liquid, FeCl3 mole fraction, reaction temperature, reaction time on viscosity reduction of heavy oil, composition , The influence of the average molecular weight. The results showed that the concentration of ionic liquid, the reaction temperature and the reaction time had a great influence on the viscosity-reducing rate. Alkaline ionic liquid had better effect on upgrading heavy oil. Under the conditions of 80 ℃ lower temperature, 18h shorter reaction time, (5%) and FeCl3 mole fraction (0.4), the viscosity-reducing rate of heavy oil reached 61.7% after the ionic liquid treatment. The content of saturated hydrocarbons, aromatics and gums in heavy oil increased, while the content of asphaltene, The average molecular weight is significantly reduced, leading to a decrease in viscosity of the heavy oil.