有机沸石对富里酸的静态吸附性能

采用十六烷基三甲基溴化铵(HDTMA)改性制备的有机沸石(SMZ),在HDTMA理论负载量为120%时,对富里酸的吸附去除效果最佳,在酸性条件下更有利于SMZ对富里酸的吸附去除.水中K+和Na+等金属离子对SMZ吸附富里酸的行为不产生影响,Ca2+和Mg2+等金属离子强化了SMZ对富里酸的吸附效能,苯酚和五氯苯酚减弱了SMZ对富里酸的吸附效果.

6-O-单苯甲酰-β-环糊精固定相的制备及其静态吸附性能研究

合成了6-O-单苯甲酰-β-环糊精,并将其制备成手性固定性,用紫外分光光度法测定罗哌卡因对映体溶液被此固定相吸附后的UV吸收值(A),比较两种溶液被吸附前后A的变化情况,推断自制的环糊精固定相对两种对映体吸附性能的差异,预测此固定相能否拆分罗哌卡因对映体。

3-十四烷氧基-2-羟丙基三乙基氯化铵在大庆油砂表面吸附性能

季铵盐由于其良好的性能,日益受到人们的重视,在油田、食品和日用化工等领域已得到广泛的应用。研究了地层温度下(45℃)3,-十四烷氧基-2-羟丙基三乙基氯化铵(TPAC)在大庆油砂表面的静态吸附性能,考察了液固比、吸附时间和浓度对静态吸附量的影响。结果表明,TPAC溶液在大庆油砂表面达到静态饱和吸附时:液固比为20∶1;浓度为1.84 mmol/L;吸附时间为6 h,吸附等温线为S型曲线。当TPAC的浓度达到1.10 mmol/L时,形成单分子层饱和吸附;当浓度增加至1.84 mmol/L达到双分子层饱和吸附,饱和吸附量为13.21×10-6 mol/g。研究季铵盐吸附性能为季铵盐在油田中的应用打下良好的基础。

一种阳离子溶液型选择堵水剂POL性能研究

以阳离子单体二甲基二烯丙基氯化铵(DMDAAC)与丙烯酰胺(AM)作单体,采用V 50和氧化还原体系做引发剂,经水溶液聚合法共聚出一种阳离子聚合物POL。其合成条件为反应温度60℃,反应时间2 h,反应pH值为7,反应物配比为n(DMDAAC)∶n(AM)=1∶6,单体质量40%。研究了POL溶液在不同温度,不同吸附剂(石英砂和油砂)上的静态吸附规律;探究经过POL吸附后的水湿及油湿石英片表面润湿性变化,表面接触角均偏向亲水性发展,证明POL具有选择堵水的特性;岩芯驱替实验测定POL选择堵水性能,实验结果表明封堵效果良好,在0.5~6 mL/min驱替速度下实验测定NFFR值均大于1,表明POL作为一种新的阳离子溶液型选择堵水剂,其具有良好的堵水不堵油效果。

低渗透油藏驱油用表面活性剂SAS体系及性能评价

针对长庆油田王窑加密区长6油藏特征,开发出一种聚乙二醇辛基苯基醚、十二烷基苯磺酸钠与有机溶剂乙醇复配而成的表面活性剂SAS体系,并从油水界面张力、热稳定性、静态吸附性能（吸附对界面张力的影响和吸附量的测定）、天然岩心进行驱油效率等方面对其进行了性能评价。结果表明,在55℃及50000mg/L矿化度的条件下,表面活性剂质量分数在0.05%~0.4%的范围内,油水界面张力可在30min内快速降至10-3 mN/m;SAS体系具有较好的热稳定性,在地层中能长期保持低界面张力,能够起到较好的驱油作用;SAS体系在吸附11次后界面张力仍然超低（小于10-2 mN/m）,并且不同质量分数下的吸附损耗量均低于5mg/g,抗吸附性能优异;SAS体系在水驱基础上分别提高采收率4.5%、5.54%,有效提高驱油效果,满足低渗透油田提高采收率技术需要。

Adsorption Performance of Activated Carbon Prepared from Corn Stalks

[Objective] This study aimed to study the adsorption performance of activated carbon prepared from corn stalks. [Methed] With granular activated carbon prepared from corn stalks as research object, adsorption performance simulation test equipment was set up to investigate the adsorption performance of the prepared activated carbon for methanol by static weight method. In addition, the effects of adsorption bed structure, activated carbon particle size in adsorption bed, addition amount of graphite powder in activated carbon and modified activated carbon on systematic adsorption performance were studied. [Result] Under conditions of same activated carbon and same adsorption temperature, the adsorption performance of new adsorption bed A （installed with finned diaphragm adsorbate tubes） was signifi- cantly better than that of unmodified adsorption bed B. Compared with adsorption bed B, adsorption bed A took 5 min shorter to reach the adsorption amount of 0.22 g/g. Under the same adsorption temperature, the adsorption performance of bed loaded with different-particle size activated carbon was significantly better than that loaded with same-particle size activated carbon. The bed loaded with different-particle size activated carbon took 16 min shorter to reach the adsorption capacity of 0.22 g/g compared with the bed loaded with same-particle size activated carbon. Adding proper amount of graphite powder in activated carbon could enhance the thermal conductivity and strengthen the adsorption properties. The optimum addition amount of graphite powder was 20% of the total amount of activated carbon. Com- pared with that of the control, the adsorption performance of activated carbon soaked by weak acidic solution was significantly improved. It took 3 min shorter to reach 87.1% of the equilibrium adsorption amount. [Conclusion] This study will provide reference for optimizing structural design of adsorption bed and adsorption refrigeration system.