沥青质分散剂对重质燃料油沥青质分散稳定作用研究

Effect of Asphaltene Dispersants on Asphaltene Dispersibility in Heavy Fuel Oil

以总潜在沉淀物为指标,考察了沥青质分散剂对船用燃料油沥青质分散性的影响,并对其分散机理进行了讨论,结果表明,十二烷基苯磺酸、十二烷基苯酚、十二烷基醇和十二烷基胺均对燃料油中的沥青质有一定的分散作用,其中,十二烷基苯磺酸分散性能最好,99%以上的以总潜在沉淀物形式检测到的沥青质可以被其重新分散到燃料油中,其良好的分散性可能与十二烷基苯磺酸分子中的酸性官能团和苯环有关。

The dispersibilities of four different dispersants （dodecylbenzenesulfonic acid,dodecanol,dodecylamine and dodecyl phenol） to asphaltene in heavy fuel oil were evaluated by using the potential total sediment as the index, and the possible dispersing mechanism was discussed. The results show that, dodecylbenzenesulfonic acid has the highest disperability to asphaltene in heavy fuel oil, and more than 99 % asphaltene aggregation can be redispersed when dodecylbenzenesulfonic acid dosage is 4% （wt）.