低含水原油的深度脱水性能研究

Study on Deep Dehydration Performance of Low-Water Content Crude Oil

摘要

目前针对部分原油出现的前期脱水快、后期脱水力度不足问题，表现出深度脱水性能不够，少量乳化水存在原油中，致使达不到外输含水≤0.5%的要求。本文以酚胺醛树脂、酚醛树脂、丙二醇、四乙烯五胺为起始剂合成了四个类型破乳剂产品，以两个联合站原油（乳化含水分别为6%和3%）为目标进行性能评价，结果表明酚醛胺树脂类破乳剂DP-150和多胺类破乳剂DP-213脱水率较高、脱水速度快、脱出水水质清、界面齐，其两类产品具有多支链结构，为后续快速匹配适用于低含水原油的破乳剂产品提供方向。

Abstract

Currently, some crude oils exhibit rapid initial dehydration but insufficient subsequent dehydration, resulting in inadequate deep dehydration performance and the presence of small amounts of emulsified water, which fails to meet the requirement of ≤ 0.5% water content for external transportation. This study synthesized four types of demulsifier products using phenol-amine-aldehyde resin, phenol-formaldehyde resin, propylene glycol, and tetraethylene pentamine as starting agents. Performance evaluations were conducted on two combined station crudes (with emulsified water contents of 6% and 3%, respectively). The results indicate that the phenol-amine resin-based demulsifier DP-150 and the polyamine-based demulsifier DP-213 demonstrate high dehydration rates, rapid dehydration speed, clear water quality, and well-defined interfaces. Both product types feature multi-branch structures, providing direction for the subsequent rapid development of demulsifiers suitable for low-water-content crude oils.

关键词

酚胺醛 / 酚醛醇 / 多胺 / 低含水 / 破乳

Key words

phenolamine aldehyde / phenol alcohol / polyamine / low moisture content / demulsification

参考文献

[1] 丁昱. 基于原油乳液的低温破乳剂制备及其破乳性能研究[D]. 长江大学, 2024.

[2] 魏立新, 王锦秀, 侯进才, 等. 原油低温破乳剂的研究与应用综述[J]. 内蒙古石油化工, 2009, 35(23): 5-8.

[3] 冯涛. 低温破乳剂的研制与应用[D]. 东北石油大学, 2007.DOI: 10.7666/d.y1224952.