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燃料油硫化物中的噻吩类硫化物较难脱除,采用经济、适用的噻吩类硫化物脱除技术是车用燃料油深度脱硫技术发展的必然趋势。本文介绍了加氢脱硫、非加氢脱硫、联合脱硫等噻吩类硫脱除技术,指出为了实现高效、经济、环保的目标,联合脱硫技术将得到更多使用,非加氢脱硫技术当中吸附脱硫、氧化脱硫在克服目前存在技术问题后将有非常好的发展前景。 相似文献
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我国焦化苯粗品中噻吩含量普遍偏高,脱除焦化苯中的噻吩类硫化物,可提高焦化苯的质量,有利于其进一步的深加工利用。目前,焦化苯中噻吩类硫化物脱除技术主要有萃取精馏法、选择吸附法、选择氧化法、催化加氢法、酸洗精制法等;另外,Friedel-Crafts反应脱硫法和氯甲基化脱硫法也可将焦化苯中纯苯与噻吩类硫化物分离。选择吸附法脱硫技术具备硫酸酸洗精制法操作简单和催化加氢法脱硫精度高、以及萃取精馏法可回收噻吩的优点,具有较大的工业化推广应用价值,提高吸附剂吸附容量以及吸附剂的稳定性将是选择吸附法今后研究的重点。近年来,离子液体已用于催化裂化汽油中硫化物的脱除,这对将来采用离子液体脱除焦化苯中噻吩的技术研究具有重要的借鉴意义。 相似文献
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生产超低硫燃料油的氧化脱硫技术进展 总被引:1,自引:0,他引:1
介绍了燃料油品中硫的分布特点,对有关氧化脱硫技术的反应机理、工艺流程及技术经济等进行了详细论述,并对其发展情况及应用前景做了展望. 相似文献
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《分离科学与技术》2012,47(16):2567-2576
ABSTRACTA poly ionic liquid, poly(1-vinyl imidazole)-p-xylylene dichloride (PVIm-PXDC), was synthesized and used for fuel oil denitrogenation. The structure of PVIm-PXDC was characterized and the denitrogenation performance was investigated. Results indicate that the pseudo-second-order kinetic model and Langmuir model are appropriate to describe the adsorption kinetics and thermodynamics, respectively. The adsorption ability of PVIm-PXDC for different nitrogen compounds follows the order of indole > pyrrole > quinoline > pyridine. The equilibrium adsorption amount decreased about 10% for all the nitrogen compounds after six regeneration cycles and the denitrogenation and regeneration processes have no influence on the structure of PVIm-PXDC. 相似文献
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介绍了酸中和、离子液体、络合、吸附、微波等非加氢方法脱除油品中碱性氮化物的研究进展。每种方法都有其各自的优缺点,组合工艺脱氮以其投资少、操作简单、见效快的特点,将会成为油品脱氮的主要工艺方法。 相似文献
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车用燃料电化学脱硫研究进展 总被引:1,自引:0,他引:1
随着空气污染的日益严重及环保法规的逐步完善,车用燃料清洁化生产已势在必行.作为一种新型脱硫技术,电化学脱硫近年来研究较多.车用燃料电化学脱硫技术包括氧化脱硫及还原脱硫.相对于传统加氢脱硫,电化学脱硫具有反应条件温和、选择性高、工艺流程简单及易于自动控制等特点.本文综述了国内外车用燃料电化学脱硫的研究现状,从反应机理、实验方法、脱硫效果等方面详细介绍了电化学脱硫的研究进展.提出了深入研究反应机理、寻找新型电极材料、配制复合电解液以及开发电化学组合脱硫工艺是未来车用燃料电化学脱硫的发展方向. 相似文献
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A solid extraction process for selectively removing nitrogen from alternative refinery feedstock has been developed. It has been demonstrated that solid CuCl2 · xH2O can reduce the nitrogen content of shale oils to acceptable levels for some refineries. In a simple single-stage process, the nitrogen content was reduced by more than 85% to levels below 0.2 wt%. The solid extraction process was remarkably selective and produced high oil recovery yields corresponding to ≈98% of the theoretical limit. Experiments with model systems have shown complete selectivity for the nitrogen compounds and have demonstrated that the entire bulk of the solid is involved in the extraction process. Many other solids have been shown to be effective, namely transition metal halides, nitrates, sulphates, acetates, fluoroborates, and phosphates. 相似文献