环烷基减压蜡油生产环保橡胶油的加氢工艺研究

Hydrofining process research on producing green rubber oil by naphthenic vacuum gas oil

关键词:  环烷基  减压蜡油  加氢工艺  环保橡胶油 

Key words:  naphthenic base  vacuum gas oil (VGO)  hydrofining process  green rubber oil

摘要:

在加氢中试试验装置上,以环烷基减压蜡油为原料,考察了反应温度、氢分压等工艺条件对环保橡胶油CA值、8种多环芳烃(PAHs)等性能的影响。结果 表明,在氢分压为10~15 MPa,体积空速为基准~基准+0.5 h-1,反应温度为t~t+60 ℃时,加氢工艺适宜生产CA值>12%、苯并(a)芘等8种PAHs质量浓度满足欧盟环保要求的橡胶油。氢分压越高,体积空速越小,加氢工艺生产环保橡胶油的操作空间(反应温度区间)越宽,且偏向低温区间,环保橡胶油的收率越大。 

Abstract:

In this article, effects of reaction temperature, hydrogen partial pressure and other process conditions on CA value, 8 kinds of polycyclic aromatic hydrocarbons (PAHs), etc. of green rubber oil were studied in a pilot trickle-bed reactor by naphthenic vacuum gas oil. The results showed that under the condition of hydrogen partial pressure 10-15 MPa, volumetric space velocity between reference to reference + 0.5 h-1, and reaction temperature between t to t + 60 ℃, it was appropriate for hydrofining process to produce green rubber oil, in which the CA value was over 12% and mass concentration of benzo(a)pyrene and other PAHs met the EU environmental requirements. There would be a wider operating space (reaction temperature range) for production of green rubber oil by hydrofining process at a higher hydrogen partial pressure, lower volumetric space velocity. What’s more, the operating temperature range led to lower temperature area, so there would be a higher yield of green rubber oil.