聚山梨酯聚酯对绿色表面活性剂乳液的分离效果,Industrial & Engineering Chemistry Research

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聚山梨酯聚酯对绿色表面活性剂乳液的分离效果
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2023-10-03 , DOI: 10.1021/acs.iecr.3c01677
Linda Tatiana Lezama Viveros ₁ , Roozbeh Rafati ₁ , Amin Sharifi Haddad ₁

Affiliation

石油工业中使用无污染/绿色表面活性剂、新型盐水以及在乳液系统中添加纳米颗粒的新技术的激增，提出了如何分离这些系统以及当前最常用的方法是否仍然适用于它们的问题。本文展示了最大浓度为 1000 ppm 的绿色破乳剂（聚山梨酯聚酯）在分离不同成分的原油乳液中的性能研究。这些乳液从轻质原油到中质原油，含有三种表面活性剂：椰油基葡萄糖苷（糖基）、Greenzyme（酶基）和 α 烯烃磺酸盐（合成）。这些乳液体系含有两种环保盐水：甲酸钠和甲酸钠，并将结果与氯化钠进行了比较。一些组合物考虑添加0.25重量％的二氧化硅和磁铁矿纳米颗粒。通过60℃瓶内试验评价破乳效果。破乳剂与任何成分的轻质原油均能与椰油基葡萄糖苷充分分离；然而，需要高浓度。含有中质原油的乳液更难以分离，因为破乳剂由于粘度增加而作用较慢，并且在某些情况下甚至在分离方面没有显着变化，例如对于 7 g/dL 甲酸钾盐。颗粒存在的破乳作用取决于表面活性剂与颗粒之间的相互作用。含有二氧化硅的乳液可将破乳作用降低 10% 至 20%，根据表面活性剂类型的不同，对于含磁铁矿的样品，观察到的效果更强，在 10% 至 40% 之间。

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Effectiveness of Polysorbate Polyester on Separation of Emulsions Made by Green Surfactants

The surge of new technology in the oil industry with nonpollutant/green surfactants, new brines, and the addition of nanoparticles to emulsion systems imposes a question on how these systems are separated and if the current most commonly used method is still applicable to them. This paper showcases the study on the performance of a green demulsifier (polysorbate polyester) up to a maximum concentration of 1000 ppm in the separation of crude oil emulsions with different compositions. These emulsions varied from light to medium crude oil with three surfactants, Coco Glucoside (sugar-based), Greenzyme (enzymatic-based), and alpha olefin sulfonate (synthetic). These emulsion systems contained two environmentally friendly brines, sodium and potassium formate, and the results were compared with sodium chloride. Some compositions consider the addition of 0.25 wt % silica and magnetite nanoparticles. The demulsification efficacy was evaluated with a bottle test at 60 °C. The demulsifier produces a full separation with Coco Glucoside with light crude oil with any composition; however, a high concentration is needed. Emulsions with medium crude were more difficult to separate as the demulsifier was slower to act due to the viscosity increase and in some cases even presented no considerable changes in separation, like for 7 g/dL potassium formate salt. The demulsification with particle presence was dependent on the interaction between the surfactant–particle interaction. Emulsions containing silica decreased the demulsification between 10 and 20% with a stronger effect observed for the samples with magnetite between 10 and 40% depending on the surfactant type.

更新日期：2023-10-03

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