共查询到16条相似文献,搜索用时 218 毫秒
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介绍直接烷基化技术的FBA工艺、Alkylene工艺、Eurofuel工艺、ExSact工艺等固体酸烷基化工艺以及改进的液体酸烷基化技术和间接烷基化技术的InAlk工艺、CDIsoether工艺、NExOCTANE工艺、Alkylate 100SM工艺以及叠合–醚化技术的研究进展。提出了在我国发展烷基化油生产技术的建议。 相似文献
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阐述了固体酸烷基化催化剂在异丁烷/丁烯烷基化中的再生方法研究进展,包括金属临氢再生、氧化煅烧再生、超临界流体再生、洗涤再生,同时对固体酸烷基化催化剂的失活原因和失活形式进行了分析评述。这些方法在一定条件下可以实现催化剂不同程度的再生,但由于操作以及成本等原因都停留在实验室阶段,本文综合比较了各种再生方法的再生工艺过程以及再生效果,分析各种再生方法的优劣。固体酸烷基化催化剂失活较快是阻碍异丁烷/丁烯固体酸烷基化工艺工业化的关键因素,研究探索操作简单、成本低、有效的固体酸烷基化催化剂再生方法仍将是今后该领域的研究热点。 相似文献
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A short review of solid acid alkylation processes; the conception of the mechanism of goal and side conversion of isobutane and butenes, the deactivation nature of catalysts being used, and the possibility for their reactivation and industrial application is given. It was demonstrated that hydride transfer from isobutane molecules is the key process under which the catalytic cycles of alkylation retain and saturated hydrocarbons are formed as the process products. The main reason for the deactivation of alkylation catalysts is the formation of alkylcyclopentadienes and related compounds belonging to butenes. The problems of the fast deactivation of solid alkylation catalysts are substantially solved by the organization of catalyst performance in the connected reaction-regeneration system and in the application of hydrogenation and extraction procedures of activity regeneration, for which hydrogen and initial isobutane are used. Many companies incline to this kind of organizing of uninterrupted solid acid alkylation, which is an alternate to liquid acid alkylation. 相似文献
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固体酸烷基化工艺技术综述 总被引:1,自引:1,他引:0
综述了固体酸烷基化催化剂和烷基化工艺的研究进展,重点介绍了Akzo Nobel/ABB Lummus的AlkyClean技术、UOP公司的Alkylene技术、Haldor Topsoe公司的FBA技术和Lurgi公司的Eurofuel技术. 相似文献
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综述了FCC汽油烷基化脱硫的特点与优势.探讨了FCC汽油烷基化反应的机理及用于该反应的固体酸催化剂应满足的条件.最初建议应加大开发新型FCC汽油烷基化催化剂的研究力度,以期推进具有自主知识产权的FCC汽油烷基化深度脱硫技术的工业化进程. 相似文献
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The complicated reaction mechanism and the character of competitive reactions lead to a stringent requirement for the catalyst of C4 alkylation process. Due to their unique properties, ionic liquids (ILs) are thought to be new potential acid catalysts for C4 alkylation. An analysis of the regular and modified chloroaluminate ILs, novel Br?nsted ILs and composite ILs used in isobutane/butene alkylation shows that the use of either ILs or ILs coupled with mineral acid as homogeneous catalysts can help to greatly adjust the acid strength. By modifying the struc-tural parameters of the cations and anions of the ILs, the solubility of the reactants could also be adjusted, which in turn displays a positive effect on improving the activity of ILs. Immobilization of ILs is an effective way to mod-ulate the surface adsorption/desorption properties and acid strength distribution of the solid acid catalysts. Such a process has a tremendous potential to reduce the deactivation of catalyst and enhance the activity of the solid acid catalyst. The development of novel acid catalysts for C4 alkylation is a comprehensive consideration of acid strength and its distribution, interfacial properties and transport characteristics. 相似文献
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芳烃长链烷基化是一类重要的有机合成反应,在化工生产中具有广泛的应用价值。传统催化工艺所采用的氢氟酸等催化剂具有高腐蚀、高污染的特点,难以满足化工行业环境友好的发展需求。本文指出固体酸、离子液体两大类催化剂是实现该工艺绿色化转型的关键所在,并综述了固体酸、离子液体两大催化体系的研究成果、应用现状及主要技术问题。研究表明二者对于芳烃长链烷基化均具有较高的活性及选择性,以固体酸为催化剂的Detal工艺已然实现工业化生产。但目前两种催化剂均存在易失活的问题,且Detal工艺的运行成本较高,因而未来需开展有关研究提高催化剂的稳定性、降低工艺的能耗及物耗以缩减运行成本。 相似文献