脱除油品中噻吩类硫化物的研究进展.docx

脱除油品中噻吩类硫化物的研究进展 摘要：简单介绍了噻吩类硫化物的必要性以及传统加氢脱硫技术并提出传统脱除方法在脱除噻吩类硫化物方面的局限性，氧化脱硫技术成为脱除油品中噻吩类硫化物的新方法，主要介绍了双氧水/有机酸和双氧水/杂多酸两种体系在氧化脱硫方面的研究进展。H2O2/有机酸体系能在温和的条件下达到较高的脱硫率，但是在该体系下有机酸会部分溶于燃油中而影响燃料的品质；萃取剂选择性较差使得油品的收率受到影响；萃取剂成本较高、液体有机酸不能再生循环使用，使得回收成本比较高。因此兴起了双氧水/杂多酸氧化脱硫体系，有效的解决了H2O2/有机酸体系的不足之处，杂多酸季铵盐类催化剂被越来越广泛的应用于各类两相、三相反应中，并取得了一定的进展。最后，展望了氧化脱硫在清洁油生产方面的应用前景。 关键词：噻吩类硫化物；氧化脱硫；双氧水中图分类号：TE624 文献标识码：AAdvances in oil thiophenic sulfur compounds removalAbstract: A brief introduction to the necessity of thiophene sulfides and traditional hydrodesulfurization and proposed the limitations of the traditional method of removing sulfur compounds of thiophene ， oxidative desulfurization technology as a new method of removing Sulfur compounds of thiophene and introduces the research progress of hydrogen peroxide / organic acid and hydrogen peroxide / heteropolyacid systems in terms of oxidative desulfurization. H2O2 / organic system can achieve a high desulfurization rate under mild conditions, but partially soluble in the organic acid will lower the fuel system and affect the quality of the fuel; poor selectiveity extractant affect the oil yield; higher extractant costs, liquid organic can’t regenerate and recycling, so recycling costs are higher. Hence rise of the oxidative desulfurization system of hydrogen peroxide / heteropolyacid, effectively solve the disadvantages of H2O2 / organic system, quaternary ammonium heteropolyacid catalyst is more and more widely used in various types of two-phase, three-phase reaction in, and has made some progress. Finally, prospect the oxidative desulfurization applications in the production of clean oil.Keywords: thiophene sulfides; oxidative desulfurization; hydrogen peroxide近年来，随着环保要求的不断提高，汽油和柴油的标准也在不断提高。不同国家的经济发展水平不同，汽油和柴油的生产过程各不相同，但对于汽柴油硫含量的控制都是日趋严格[1]，有国家通过立法将含硫量控制在10 -15 ppm。油品中含硫有很大危害[2]：导致设备的严重腐蚀及催化剂中毒，并且影响油品的安定性；炼厂及石化装置排放的HC、CO、NOx等会污染大气，甚至造成中毒事件；在汽车尾气中形成颗粒物，容易引起人体呼吸系统疾病甚至可能致癌，这种危害随着含硫量的增加而加深。因此，改善油品性质、严格控制含硫量成为油品发展的必然趋势。汽油组成性质对汽车尾气组成的影响如表1。由表1可以看出降低