多支链多胺基多苯环型清水剂的合成及性能评价

Synthesis and Performance Evaluation of Multi-branched Polyamine-based Polyphenyl Ring Type Clearing Agent

魏 强 李家俊

WEI Qiang LI Jiajun

针对稠油注聚油田含油污水处理困难的情况，以双酚-A、甲醛、三乙烯四胺为主要原料合成酚胺树脂，再以 酚胺树脂为起始剂合成一系列多支链、多胺基、多苯环的双酚-A酚胺聚醚型清水剂。以加入清水剂3 min内污水 的含油量降至20 mg/L以下为评价标准，评价了合成的系列清水剂的清水效果，从中优选清水剂F-14与F-15，并 将两者按不同复配比复配，考察复配清水剂的清水效果，通过研究加入清水剂前后油水界面性质的变化，分析清 水剂的作用机理，并进行了现场应用实验。结果表明：清水剂F-14与F-15按照复配比2∶1进行复配，在加剂量为 40 mg/L下可使污水含油量在规定时间（3 min内）降低至18 mg/L，符合标准要求。合成清水剂具有极强的界面 活性，极易吸附于油水界面，并驱替油水界面原有表面活性物质，形成新的油水界面膜；新形成的界面膜强度较 弱，易破裂，导致小油滴间碰撞时易聚并为大油滴，促进油水分离，从而达到含油污水的清水效果。渤海某油田 现场中试结果表明合成清水剂适用现场短流程、含聚污水水质，处理后注入水中油含量稳定在20 mg/L以下，达 到现场技术要求。

In view of the difficulty of treating oily sewage in heavy oil polymer injection oilfield，phenolamine resin was synthesized using bisphenol-A，formaldehyde and triethylenetetramine as the main raw materials，and then a series of bisphenol-A phenolamine polyether clearing agents with multi-branched chain，multi-amine group and multi-phenylene ring were synthesized from phenolamine resin as the starting agent. The effect of the clearing agent was analyzed by studying the changes of oil-water interface properties before and after the addition of clearing agent. The clear water effect of the synthetic series of clear water agent was evaluated by reducing the oil content of wastewater to less than 20 mg/L within 3 min after adding clear water agent，from which clear water agent F-14 and F-15 were selected，and the clear water effect of the compounded clear water agent was investigated in different compounding ratios，and field application experiments were conducted. The results showed that the clear water agent F-14 and F-15 are compounded according to the compounding ratio of 2∶1，and the oil content of the sewage could be reduced to 18 mg/L at the dosing rate of 40 mg/L within 3 min，which met the standard requirements. the synthetic clear water agent had strong interfacial activity，which could easily adsorb at the oil-water interface and repel the original surface-active material at the oil-water interface to form a new oil-water interface film. The newly formed interface film was weak and easy to rupture， resulting in colliding between small oil droplets and gathering easy to form large oil droplets，promoting the separation of oil and water，so as to achieve the clear water effect of oily sewage. The results of the field trial in an oilfield in Bohai Sea showed that the synthetic clear water agent was suitable for short flow and polymer containing sewage quality，and the oil content in the treated injection water was below 20 mg/L，meeting the field technical requirements.

10.19346/j.cnki.1000-4092.2023.01.022