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HDS of straight-run gas oil at various nitrogen contents. Comparison between different reaction systems

机译:各种氮含量的直馏粗柴油的HDS。不同反应体系之间的比较

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The effect of removal extent of nitrogen-containing species on the hydrodesulfurization (HDS) of straight-run gas oil from a Mexican refinery over a NiMo-based catalyst was studied. The original middle distillate (~360 ppm N) was subjected to N-compounds removal by contacting with a proprietary adsorbent. By varying contact time, feedstocks of ~234 and ~137 ppm N were obtained. Progressive improvement on HDS over NiMo catalyst was observed by decreasing concentration of organo-N compounds in the gas oils tested in batch reactor. However, this behavior seemed to depend on the severity of the operation. By increasing operating temperature, the enhanced desorption rate of N-compounds relieved their poisoning effect, making less pronounced the benefit of low-nitrogen feedstocks. The HDS activity data from batch reactor were compared to those found when equivalent experiments were carried out in a fixed-bed up-flow reactor under conditions similar to those used in industrial facilities.
机译:研究了含氮物质的去除程度对墨西哥炼厂在NiMo基催化剂上的直馏粗柴油加氢脱硫(HDS)的影响。通过与专有吸附剂接触,将原始中间馏分(约360 ppm N)进行N化合物去除。通过改变接触时间,获得了〜234和〜137 ppm N的原料。通过降低在间歇反应器中测试的瓦斯油中有机N化合物的浓度,可以观察到HDS优于NiMo催化剂的进步。但是,此行为似乎取决于操作的严重性。通过提高操作温度,提高了N化合物的解吸速率,减轻了其中毒作用,使低氮原料的益处不太明显。将间歇反应器的HDS活性数据与在固定床上流反应器中在与工业设施相似的条件下进行等效实验时发现的数据进行比较。

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