油砂采出液多分支耐高温破乳剂的合成及性能评价*

Synthesis and Performance Evaluation of Multibranched High Temperature Resistant Demulsifier for Oilsand Emulsion Treatment

曾璐明

ZENG Luming

为提高油砂采出液破乳剂的耐高温性能和脱水速率，先以6，6-异亚丙基双萘酚、乙二胺和甲醛为原料合成 了具有双萘酚结构的酚胺树脂，再以此酚胺树脂为起始剂、氢氧化钾为催化剂、与环氧丙烷及环氧乙烷嵌段聚合 反应合成多分支耐高温破乳剂。采用热重分析和羟值测定分析该破乳剂耐高温性能，通过高温脱水实验考察其 脱水性能。研究表明，合成破乳剂的耐温性良好，在350℃以下质量损失不明显，且在100~ 300℃温度范围内羟 值含量稳定，适合在油砂采出液的高温环境应用。针对加拿大阿尔伯塔省某油田油砂采出液，在130℃，药剂浓 度为400 mg/L 的情况下8 h的脱水率达到90%，脱水速率高于现场在用破乳剂，具有较好的破乳脱水性能。图3 表1参11

In order to improve high temperature resistance and dehydration performance of demulsifier for oilsand emulsion treatment，phenol-amine resin containing dinaphthol structure was synthesized using 6，6-isopropylidenebisnaphthol，ethanediamine and methanol as the raw materials. Then multibranched high temperature resistant demulsifier was further synthesized using the phenol-amine resin as the initiator，KOH as the catalyst，through addition reaction with epoxyethane and epoxypropane respectively. High temperature resistance was studied by thermogravimetric analysis and hydroxyl value，dehydration performance was evaluated by high-temperature dehydration bottle tests. The results showed that the demulsifier had good temperature resistance with little mass loss below 350℃ and the stable hydroxyl value when temperature was at the range of 100—300℃，indicating that the demulsifier could be used to treat oilsand emulsion in the high temperature environment. For the oilsand emulsion from oilfield in Alberta，Canada，the dehydration rate reached up to 90% within 8 hours at the demulsifier dosage of 400 mg/L and at the temperature of 130℃ ，which was higher than that of the incumbent demulsifier. The obtained demusifier have excellent demulsification and dehydration performance for the oilsand emulsion.

10.19346/j.cnki.1000-4092.2020.03.020