稠油的类乳化复合降粘作用机理

讨论了油水乳状液的粘度与水外相体积分数之间关系的 3种理论公式 (Einstein ,Hatschek ,Richardson公式 )和真实乳状液的各种复杂类型 ,包括极少量水与油形成的核心 环状流。提出在稠油中加入少量的水、油溶性降粘剂、乳化剂 ,使稠油形成油相不易聚结的水外相类乳状液 ,以大大降低稠油粘度的方法并讨论了涉及的机理。将5 0℃、6 3.5s- 1 下粘度 >17.8Pa·s的胜利乐安稠油与加有 0 .1%特制乳化剂、0 .0 5 %油溶性共聚物降粘剂MSA的水在 5 0℃混合 ,油水体积比分别为 8.5∶1.5和 8.0∶2 .0 ,药剂加量以药剂与稠油的质量比表示 ,形成的类乳状液的粘度分别为 6 73.2和 2 4 1.5mPa·s (5 0℃ ,113.5s- 1 ) ,降粘率分别为 96 .6 %和 98.8%。在油水体积比 8.5∶1.5 ,MSA加量 0 .0 5 % ,乳化剂加量 0 .1% ,温度 5 0～ 80℃的条件下 ,用煤油代替水 ,在 <80℃时稠油降粘率均较小 ,且温度越低 ,降粘率差别越大。考察了MSA加量 (0 .0 1%～ 0 .1% )、乳化剂加量 (0 .0 5 %～ 0 .1% )、油水体积比 (8.5∶1.5～ 7.0∶3.0 )、乳化温度 (5 0～ 70℃ )的影响。本方法可用于稠油的井筒降粘开采。图 2表 4参 13。

Oil Removing from Emulsions Using Commercial Resins

Removal of vegetal oil from wastewater using comercial resins in batch reactors processes is studied in present study. A traditional and patented type of three different surfactants was used for stabilizing of the emulsion phase. The results for the emulsion made by the synthesized surfactant showed much better stability and performance in the separation process compared to that by conventionally used Span 80. To determine the optimum operation conditions, the effect of several parameters such as initial oil concentration, amount of resin in the solid phase, adding or not a surfactant, resin type, and stabilizer concentration have been investigated. It was found that under the optimum conditions, more than 98% ofoil can be removed in a single batch process.