Abstract The filtration efficiency of coalescent filter elements used in gasoline and diesel oil dehydration in refineries is unsatisfactory and not sufficient to meet downstream water-content requirements. Thus, it was necessary to improve the internal filter medium of traditional oil-water coalescent filter elements. Zeolite membrane is a kind of material with superhydrophilicity and strong adsorption for and permeability to water. In this study, ZSM-5 zeolite membrane with superhydrophilic properties was successfully prepared by an in situ hydrothermal synthesis. Two experiments with zeolite membranes were performed, including membrane filtration and membrane coalescence tests. Membrane filtration tests showed that it possessed strong adsorption for and permeability to water and that the oil-water filtration efficiency for 32# turbine oil, kerosene, and corn oil were all >95 %. In the second part of this study, composite filtration was carried out using the membrane as well as hydrophilic glass fiber and hydrophobic polypropylene (PP) membranes. Membrane coalescence test demonstrated that, when the oil contained a phenol/water combination, the water rejection rate of the composite filtration with ABACBA (A, PP fiber; B, glass fiber; and C, molecular sieve membrane) was 90.8 %, with the downstream water content controlled within 100 mg/L and the quality factor increased from 0.18 to 0.23, relative to other systems. These experimental results showed potential for improving the current oil-water coalescent filters.

中文翻译：

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用于增强油包水乳液中水聚结的超亲水 ZSM-5 沸石涂层膜

摘要 炼油厂汽柴油脱水用聚结滤芯过滤效率不理想，不能满足下游含水量要求。因此，有必要对传统油水聚结滤芯的内部过滤介质进行改进。沸石膜是一种具有超亲水性、对水有很强的吸附渗透性的材料。在这项研究中，通过原位水热合成成功地制备了具有超亲水特性的 ZSM-5 沸石膜。用沸石膜进行了两个实验，包括膜过滤和膜聚结试验。膜过滤试验表明，它对水具有很强的吸附性和渗透性，对32#汽轮机油的油水过滤效率，煤油和玉米油均 >95%。在本研究的第二部分，使用膜以及亲水玻璃纤维和疏水聚丙烯 (PP) 膜进行复合过滤。膜聚结试验表明，当油中含有苯酚/水组合时，使用 ABACBA（A，PP 纤维；B，玻璃纤维；C，分子筛膜）复合过滤的脱水率为 90.8%，具有与其他系统相比，下游水含量控制在 100 mg/L 以内，质量因子从 0.18 增加到 0.23。这些实验结果显示了改进当前油水聚结过滤器的潜力。使用该膜以及亲水性玻璃纤维和疏水性聚丙烯 (PP) 膜进行复合过滤。膜聚结试验表明，当油中含有苯酚/水组合时，使用 ABACBA（A，PP 纤维；B，玻璃纤维；C，分子筛膜）复合过滤的脱水率为 90.8%，具有与其他系统相比，下游水含量控制在 100 mg/L 以内，质量因子从 0.18 增加到 0.23。这些实验结果显示了改进当前油水聚结过滤器的潜力。使用该膜以及亲水性玻璃纤维和疏水性聚丙烯 (PP) 膜进行复合过滤。膜聚结试验表明，当油中含有苯酚/水组合时，使用 ABACBA（A，PP 纤维；B，玻璃纤维；C，分子筛膜）复合过滤的脱水率为 90.8%，具有与其他系统相比，下游水含量控制在 100 mg/L 以内，质量因子从 0.18 增加到 0.23。这些实验结果显示了改进当前油水聚结过滤器的潜力。分子筛膜）为90.8%，下游含水量控制在100mg/L以内，品质因数从0.18提高到0.23，相对于其他系统。这些实验结果显示了改进当前油水聚结过滤器的潜力。分子筛膜）为90.8%，下游含水量控制在100mg/L以内，品质因数从0.18提高到0.23，相对于其他系统。这些实验结果显示了改进当前油水聚结过滤器的潜力。