...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of industrial and engineering chemistry >Analysis and deep hydrodesulfurization reactivity of Saudi Arabian gas oils
【24h】

Analysis and deep hydrodesulfurization reactivity of Saudi Arabian gas oils

机译：沙特阿拉伯粗柴油的深度加氢脱硫反应性分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Gas oils obtained from Arabian Light (AD-GO), Arabian Medium (AM-GO) and Arabian Heavy (AH-GO) crude oils were subjected to detailed analysis in terms of reactive and refractory sulfur, nitrogen, as well as aromatic species. Deep hydrodesulfurization (HDS) of these gas oils over SiO2-Al2O3-supported CoMo and NiMo catalysts was studied using autoclave reactor either in one- or two-stage operations. AL-GO was easily and deeply desulfurized to 15 ppm over CoMo/Al2O3-SiO2 (catalyst X) at 340 °C and 5 MPa (H2) for 2 h. At the same conditions, AM-GO and AH-GO could be desulfurized to 70 and 78 ppm, respectively. Two-staged HDS, by combining CoMo and NiMo catalysts, in successive steps resulted in effective deep HDS. The replacement of hydrogen atmosphere after the first-stage (1 h) enhanced the AH-GO HDS during the second-stage (1 h) to 9 ppm. However, replacing the hydrogen in the second-stage with 5% H2S in hydrogen inhibited the HDS, resulting in product sulfur content of 15 ppm. Analysis of sulfur species indicate that significant fraction of reactive and refractory sulfur species were removed during the first-stage whereas the remaining refractory sulfur species were removed during the second-stage. Kinetic analysis indicates overwhelming influence of refractive sulfur species on the overall HDS. The results from this study show that two-stage scheme with optimum catalysts in series can be applied to overcome the difficulty to achieve deep HDS of AH-GO. KArabian gas oil;; Deep hydrodesulfurization (HDS);; Two-staged HDS
机译：对来自阿拉伯轻质（AD-GO），阿拉伯中等（AM-GO）和阿拉伯重质（AH-GO）原油的粗柴油进行了活性和耐火硫，氮以及芳香族物质的详细分析。在一级或二级操作中，使用高压釜反应器研究了在SiO2-Al2O3负载的CoMo和NiMo催化剂上这些轻油的深度加氢脱硫（HDS）。在340°C和5 MPa（H2）下，在CoMo / Al2O3-SiO2（催化剂X）上将AL-GO轻松且深度脱硫至15 ppm，持续2 h。在相同条件下，AM-GO和AH-GO可以分别脱硫至70和78 ppm。通过将CoMo和NiMo催化剂相结合的两阶段HDS，在连续的步骤中获得了有效的深层HDS。在第一阶段（1小时）后更换氢气气氛可将第二阶段（1小时）中的AH-GO HDS增至9 ppm。但是，用氢气中的5％H2S代替第二阶段的氢气会抑制HDS，导致产品硫含量为15 ppm。硫物质的分析表明，在第一阶段除去了相当一部分反应性和难处理的硫物质，而在第二阶段除去了其余的难处理的硫物质。动力学分析表明，折射硫物种对整个HDS具有压倒性的影响。这项研究的结果表明，可以采用串联两个阶段的最佳催化剂的方案来克服难以获得AH-GO的深层HDS的困难。 K 阿拉伯瓦斯油;;深度加氢脱硫（HDS）;两阶段HDS

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号