共查询到19条相似文献,搜索用时 93 毫秒
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综合论述了国内外催化汽油脱硫技术进展,讨论了催化汽油中硫的类型和含量分布,对过渡期催化汽油脱硫的新工艺进行了研究,论证了与传统加氢脱硫技术相比的成本优势。 相似文献
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催化裂化汽油(FCC)具有高硫含量的特点,因此降低FCC汽油中的硫含量是非常重要。而催化裂化汽油(FCC)脱硫技术分为加氢脱硫和非加氢脱硫,本文主要介绍这两类脱硫技术的机理,并对国内外汽油脱硫技术的进展加以综述。 相似文献
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《中国石油和化工标准与质量》2019,(10):231-232
催化汽油加氢脱硫装置在炼油化工企业中起着重要的作用。近年来引进了新技术,加氢脱硫取得了很大进展。整体而言,炼油化工企业催化汽油加氢脱硫工艺的选择比较困难,加之近年来环境的污染问题愈发严峻,随着我国人民环保意识的不断提高,也推动了各行各业的生产技术和产品的环保性能。因此,笔者于本文中分析了炼化企业催化汽油加氢脱硫技术的现状,以及催化汽油中利用加氢脱硫的化学方法进行生产的工节能方向,并探讨了提高催化汽油加氢脱硫技术的未来前景。 相似文献
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催化裂化汽油脱硫技术的研究发展状况 总被引:5,自引:0,他引:5
介绍了国内外汽油的质量标准,综合叙述了我国催化裂化汽油脱硫技术的现状。建议选择适当的组合工艺,如分离技术与加氢技术的组合,膜分离脱硫技术与氧化脱硫技术的组合,萃取脱硫技术与加氢脱硫技术的组合以及加氢脱硫技术与氧化脱硫技术的组合等,更加环保、高效、经济地实现石油脱硫。 相似文献
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FCC汽油脱硫工艺及发展现状 总被引:3,自引:0,他引:3
国内、外对车用汽油硫含量的限制日趋严格,采用有效的技术手段降低催化裂化汽油硫含量是关键。针对FCC汽油中含硫化合物的特点,本文综述了国内外开发的一系列FCC汽油加氢脱硫、吸附脱硫以及一些其他脱硫技术特点和发展现状,并对今后脱硫方法的发展方向加以预测。 相似文献
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Liang Zhao Yan Chen Jinsen Gao Yu Chen 《Frontiers of Chemical Engineering in China》2010,4(3):314-321
This paper reviews the most important developments on the desulfurization mechanism of Fluid Catalytic Cracking (FCC) gasoline.
First, the origin of sulfur compounds in FCC gasoline and the current developed desulfurization approaches and technologies
are briefly introduced, and then the researches on desulfurization mechanism are summarized from experimental and theoretical
perspectives. Further researches on the desulfurization mechanism will lay a foundation for optimizing desulfurization sorbents
and technologies. 相似文献
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清洁燃料的非加氢脱硫技术进展 总被引:8,自引:1,他引:8
日益严格的环保法规,对生产低硫、超低硫清洁燃料技术提出了更高要求。介绍了汽柴油脱硫的相关技术,包括加氢脱硫和非加氢脱硫。着重介绍了吸附、氧化和生物脱硫技术进展,同时简要介绍了萃取、膜分离及络合脱硫等工艺。与加氢脱硫相比,非加氢脱硫技术具有操作条件温和、投资及操作费用低等优点,具有更加广阔的发展前景。 相似文献
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对比了欧洲和我国的清洁汽油质量指标,分析了发达国家清洁汽油硫含量变化情况。对国内外清洁汽油的技术进展情况进行了综述,建议在碳五碳六异构化技术、固体超强酸烷基化技术、汽柴油清净分散剂等等技术上进行深入研发,以利我国的清洁汽油技术的快速发展。 相似文献
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An overview of new approaches to deep desulfurization for ultra-clean gasoline, diesel fuel and jet fuel 总被引:90,自引:0,他引:90
This review discusses the problems of sulfur reduction in highway and non-road fuels and presents an overview of new approaches and emerging technologies for ultra-deep desulfurization of refinery streams for ultra-clean (ultra-low-sulfur) gasoline, diesel fuels and jet fuels. The issues of gasoline and diesel deep desulfurization are becoming more serious because the crude oils refined in the US are getting higher in sulfur contents and heavier in density, while the regulated sulfur limits are becoming lower and lower. Current gasoline desulfurization problem is dominated by the issues of sulfur removal from FCC naphtha, which contributes about 35% of gasoline pool but over 90% of sulfur in gasoline. Deep reduction of gasoline sulfur (from 330 to 30 ppm) must be made without decreasing octane number or losing gasoline yield. The problem is complicated by the high olefins contents of FCC naphtha which contributes to octane number enhancement but can be saturated under HDS conditions. Deep reduction of diesel sulfur (from 500 to <15 ppm sulfur) is dictated largely by 4,6-dimethyldibenzothiophene, which represents the least reactive sulfur compounds that have substitutions on both 4- and 6-positions. The deep HDS problem of diesel streams is exacerbated by the inhibiting effects of co-existing polyaromatics and nitrogen compounds in the feed as well as H2S in the product. The approaches to deep desulfurization include catalysts and process developments for hydrodesulfurization (HDS), and adsorbents or reagents and methods for non-HDS-type processing schemes. The needs for dearomatization of diesel and jet fuels are also discussed along with some approaches. Overall, new and more effective approaches and continuing catalysis and processing research are needed for producing affordable ultra-clean (ultra-low-sulfur and low-aromatics) transportation fuels and non-road fuels, because meeting the new government sulfur regulations in 2006–2010 (15 ppm sulfur in highway diesel fuels by 2006 and non-road diesel fuels by 2010; 30 ppm sulfur in gasoline by 2006) is only a milestone. Desulfurization research should also take into consideration of the fuel-cell fuel processing needs, which will have a more stringent requirement on desulfurization (e.g., <1 ppm sulfur) than IC engines. The society at large is stepping on the road to zero sulfur fuel, so researchers should begin with the end in mind and try to develop long-term solutions. 相似文献