论文部分内容阅读
利用 CoMoP/Al_2O_3-TiO_2汽油加氢脱硫工业催化剂,在新型垂直筛板塔催化精馏装置上对流化催化裂化(FCC)汽油重馏分进行加氢脱硫,考察了进料口位置、压力、氢气与原料油的体积比、原料油的液态空速和回流比对催化精馏加氢脱硫效果的影响。实验结果表明,在进料口位置为第7塔节、压力2.0 MFa、反应段平均温度279℃、氢气与原料油的体积比300、液态空速2.0 h~(-1)、回流比2.0的条件下,FCC 汽油重馏分脱硫率达到95.73%,硫含量由850 42μg/g 降至36.32μg/g,辛烷值损失仅为0.6。将催化精馏加氢脱硫与固定床加氢脱硫进行了对比,结果表明,在相似的操作条件下,催化精馏加氢脱硫的脱硫率略低于固定床加氢脱硫,但油品的辛烷值损失较小。
The hydrodesulfurization of FCC gasoline heavy fraction was carried out on a novel vertical sieve tray catalytic distillation unit by using CoMoP / Al 2 O 3 -TiO 2 gasoline hydrodesulfurization industrial catalyst. The effects of feed position, pressure, hydrogen and The volume ratio of the feedstock, the liquid space velocity of the feedstock and the reflux ratio on the catalytic distillation hydrodesulfurization effect. The experimental results show that at the inlet of No.7 tower section, the pressure is 2.0 MFa, the average reaction temperature is 279 ℃, the volume ratio of hydrogen to feedstock is 300, the liquid airspeed is 2.0 h -1 and the reflux ratio is 2.0 FCC gasoline heavy fraction desulfurization rate of 95.73%, sulfur content from 850 42μg / g to 36.32μg / g, octane loss of only 0.6. The catalytic distillation hydrodesulfurization and fixed bed hydrodesulfurization were compared, the results show that under similar operating conditions, catalytic distillation hydrodesulfurization desulfurization rate slightly lower than the fixed bed hydrodesulfurization, but the oil Xin Alkalinity less damage.