修改EVA灌注点抑制剂 (PPD) 的合成和性能评估,具有不同的侧链长度
Peng Lu1, Zilong Li2, Feng An2
1China National Petroleum Corporation (South Sudan), Block 1/2/4 Company, Beijing 100034, PR China.
用更长的链接接入乙烯-乙酸乙烯 (EVA) 灌注点抑制剂 (PPD) 提高了它们在性原油中的性能. 较长的链条改善了晶的修饰和青的相互作用,大大减少了管道运输中的倒点.
科学领域:
- 石油工程是石油工程中的一个.
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
背景情况:
- 商用乙烯乙酸乙烯 (EVA) 倒点抑制剂 (PPD) 对原油管道至关重要.
- 精确的机制和植入EVAPPD的最佳设计仍然是积极研究的领域.
- 了解结构-性质关系是提高性原油PPD性能的关键.
研究的目的:
- 为了合成和评估基于EVA的新型PPD,具有不同的基侧链长度.
- 阐明链长度影响PPD性能在带有和没有烯的模型油中的机制.
- 为设计用于性原油运输的高性能PPD提供见解.
主要方法:
- 通过一种新的酒解-乙烯基替代路径合成改性EVA PPDs (EVA-4,EVA-10,EVA-18).
- 使用模型油 (MO-1) 和模型油与酸盐 (MO-2) 的系统性性能评估.
- 对晶体微观结构,青烯沉和PPD-青烯-青烯相互作用的分析.
主要成果:
- 对于MO-1,PPD的性能取决于对的共结晶;EVA-18显示出最佳性能 (降低了4°C的点).
- 对于MO-2,性能取决于共结晶和与酸盐的协同效应;较长的链条增强了这些协同效应.
- 由于最佳的共结晶和协同相互作用,EVA-18在MO-2中实现了最大的点降低 (14°C).
结论:
- 基侧链的长度显著影响了在性原油中移植的EVA PPD的性能.
- 对于提高复杂原油系统的性能,PPDs和asphaltenes之间的协同效应至关重要.
- 基于EVA的优化PPD,如EVA-18,为缓解状原油管道的流量保证挑战提供了一个有希望的策略.
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