摘要
由于三元复合驱原油中新型驱油用化学品的应用以及原油劣质化使得采出水乳化严重,而且三元复合驱采出水经油水分离后含油量升高。基于此,通过对不同类型的破乳剂的分析及其工艺条件的考察,探讨了影响三元复合驱采出水破乳的因素,其中破乳剂FB94具有较好的破乳效果。采用模拟三元复合驱采出水(碱为1200mg/L、聚合物为200mg/L、表面活性剂为400mg/L),投加破乳剂FB94为160mg/L,控制沉降时间为120min、温度为45℃,当初始含油量为5000mg/L时,破乳后水中含油量降至195mg/L,脱油率为96.1%;当初始含油量为1500mg/L时,破乳后水中含油量降至87mg/L,脱油率为94.2%。
The demulsifier FB94 was found to be the most effective of 11 demulsifiers for treatment of the simulated oily wastewater of ASP flooding produced from mixing oil, water with a mixture of alkali （Na2CO3,1 200 mg/L）, sulfonate surfactant （400 mg/L） and polymer （HPAM,200 mg/L）. Batch demulsification experiments employing FB94 were performed to determine the effects of alkali, surfactant and polymer concentrations on the oil removal. After the demulsification treatment at 45 °C with 160 mg/L of FB94 and settling of 120 min, the water phase oil concentration was reduced by 96.1% from 5 000 to 195 mg/L, and in another run starting with a lower initial oil content, 94.2% from 1 500 to 87 mg/L.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2009年第4期57-60,65,共5页
Environmental Pollution & Control
关键词
三元复合驱
原油
采出水
破乳
ASP flooding crude oil
produced water demulsification
