三聚氰胺基疏水海绵的制备及其吸油性能

采用单宁酸(TA)/Fe^(3+)复合物(TA/Fe^(3+))对三聚氰胺海绵(MS)进行预处理,然后通过生物蜡乳液浸渍法对三聚氰胺海绵进行疏水改性,制备了高吸油倍率的疏水三聚氰胺海绵(MS-TA/Fe^(3+)-Wax)。采用扫描电子显微镜、傅里叶变换红外光谱和接触角测试等手段对三聚氰胺海绵改性前后样品进行微观形貌、结构组成和表面润湿性表征,并考察其对不同油品的吸油性能。结果表明:MS-TA/Fe^(3+)-Wax具有高度疏水性,水接触角可达141.5°;在常温常压条件下,MS-TA/Fe^(3+)-Wax对正辛烷、二氯甲烷、甲苯、柴油、泵油和菜籽油的吸油量为54.91~97.46 g/g,吸油过程符合拟二级动力学。疏水改性的三聚氰胺海绵材料通过挤压解吸附可实现循环使用,在处理油-水污染物方面具有潜在的应用前景。

落球黏度计对QK17-2油田原油黏温的影响

利用高温高压落球黏度计和高温高压转配样装置对QK17-2油田原油黏温特征进行了室内实验研究,分别测量了不同温度、不同压力条件下该油田原油和油水混合物的黏温及油藏条件下注入不同氮气量时油气混合液的黏温。研究结果表明,高含蜡导致QK17-2油田原油在一般高温下黏温异常增高,偏离黏温指数曲线;油水混合液的黏温随含水率变化存在极大值;注氮气达气油比为20以后,降黏效果不明显。

Numerical Simulation of Enhanced Oil-Water Separation in a Three-Stage Double-Stirring Extraction Tank

Numerical simulation of enhanced fluid flow characteristics in a three-stage double-stirring extraction tank was conducted with the coupling of an Eulerian multiphase flow model and a Morsi-Alexander interphase drag force model. Results show that the addition of a stirring device into the settler can efficiently reduce the volume fraction of out-of-phase impurity in the outlet, and accelerate the settling separation of oil-water mixture. Such addition can also effectively break down the oil-water-wrapped liquid droplets coming from the mixer, inhibit reflux from the outlet, and improve the oil-water separation. The addition of a stirring device induces ignorable power consumption compared with that by the mixer, and can thus facilitate the commercialized promotion of this novel equipment.