柴油液相加氢过程中化学氢耗的研究

发布时间：2018-05-17 20:56

  本文选题：柴油 + 液相加氢　； 参考：《石油学报(石油加工)》2017年04期

【摘要】：在上流式固定床加氢中试实验装置上对柴油液相加氢过程中的化学氢耗进行研究,根据不同反应物的加氢反应方程推导出不同加氢反应的氢耗计算式,并建立了氢耗动力学模型。研究发现,在上流式柴油液相加氢过程中,前段催化剂床层的化学氢耗远远大于后段催化剂床层,70%的化学氢耗集中在前20%的催化剂床层上,从而导致后段床层H2浓度过低而影响加氢反应的进行;在进料量200 mL/h、氢/油质量比4.244×10-3、反应温度350℃和反应压力8 MPa条件下,化学氢耗计算值与实测值的平均相对误差为2.11%,表明推导的氢耗计算式准确、可靠;建立的氢耗动力学模型在预测化学氢耗时的相对误差小于2.0%,表明所建模型合理。
[Abstract]:The chemical hydrogen consumption during liquid phase hydrogenation of diesel oil was studied in a pilot plant of up-flow fixed-bed hydrogenation. According to the hydrogenation reaction equation of different reactants, the calculation formula of hydrogen consumption for different hydrogenation reactions was derived. The kinetic model of hydrogen consumption is established. It is found that in the process of liquid phase hydrogenation of upflow diesel oil, the chemical hydrogen consumption of the front catalyst bed is much higher than that of the latter catalyst bed, and 70% of the chemical hydrogen consumption is concentrated on the first 20% catalyst bed. Therefore, the lower H _ 2 concentration in the later bed will affect the hydrogenation reaction, under the conditions of feed quantity 200mL / h, hydrogen / oil mass ratio 4.244 脳 10 ~ (-3), reaction temperature 350 鈩，

本文编号：1902834