氮化物对Ni-Mo-W和Co-Mo型催化剂超深度加氢脱硫反应的影响

发布时间：2018-01-11 15:02

本文关键词：氮化物对Ni-Mo-W和Co-Mo型催化剂超深度加氢脱硫反应的影响　出处：《石油化工》2017年02期 　论文类型：期刊论文

【摘要】：利用活性白土脱除原料中的氮化物,得到硫含量相同而氮含量不同的3种柴油原料,以Ni-Mo-W/γ-Al_2O_3和Co-Mo/γ-Al_2O_3为催化剂,利用中型固定床加氢装置考察氮化物对超深度加氢脱硫反应的影响。实验结果表明,在真实油品复杂体系中,氮化物对加氢脱硫反应存在明显的抑制作用,并且随脱硫深度的增加,氮化物的影响越明显;在原料氮含量较低的情况下,Ni-Mo-W型催化剂上加氢脱硫反应的表观活化能明显低于Co-Mo型催化剂,加氢脱硫反应的活性显著高于Co-Mo型催化剂,并且随LHSV的增加,两者相差越大。采用氮含量为6.7μg/g的原料油C时,在反应温度355℃、氢分压6.4 MPa、LHSV=6.0 h~(-1)、氢油体积比300的条件下,在Ni-Mo-W型催化剂上的产品硫含量为10.0μg/g。
[Abstract]:The use of raw materials in the removal of nitride huoxingbaitu, get the same 3 diesel sulfur content and nitrogen content of different raw materials, with Ni-Mo-W/ -Al_2O_3 and Co-Mo/ gamma gamma -Al_2O_3 as catalyst, the use of medium sized fixed bed hydrogenation unit effects of nitrogen compounds on the hydrodesulfurization reaction. The experimental results show that, in the real oil in complex system there, the nitride obvious inhibitory effect on the hydrodesulfurization reaction, and with the increase of desulfurization depth of the nitride effect is more obvious; when the nitrogen content of raw materials is low, the Ni-Mo-W type catalyst for hydrodesulfurization reaction apparent activation energy was lower than that of the Co-Mo type catalyst, hydrodesulfurization activity was significantly higher than that of Co-Mo type of catalyst, and with the increase of LHSV, the difference is bigger. The raw oil C nitrogen content was 6.7 g/g, the reaction temperature is 355 DEG C, the hydrogen partial pressure of 6.4 MPa, LHSV=6.0 h~ (-1), hydrogen oil volume Under the condition of 300, the sulfur content of the product on the Ni-Mo-W type catalyst is 10 mu g/g.

【作者单位】：中国石化石油化工科学研究院;
【分类号】：TE624.9
【正文快照】： 随着石油资源的日益劣质化以及环保法规对成品油中硫含量的限制日趋严格,清洁柴油的生产受到越来越多的关注[1-3]。柴油原料中的氮化物、芳烃及气相中的杂质是超深度加氢脱硫的重要毒物[4],·172·2017年第46卷PETROCHEMICAL TECHNOLOGY一方面对催化剂的加氢脱硫活性产生强烈

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