高铁钙渣油沸腾床加氢技术研究

以仪长管输原油渣油为原料,用连续搅拌釜反应器模拟沸腾床考察了高铁钙渣油的裂化性能和杂质脱除性能,并研究了沸腾床加氢催化剂的初期失活情况。结果表明,反应温度是影响高铁钙渣油转化率和杂质脱除率的主要因素,积炭、金属硫化物的沉积造成的催化剂孔口堵塞失活是影响高铁钙渣油沸腾床加氢工艺经济性的主要因素,铁钙含量应该作为采用沸腾床加氢工艺还是固定床加氢工艺加工高铁钙渣油的判断标准。

INVESTIGATION OF EBULLATED BED HYDROPROCESSING FOR RESIDUE WITH HIGH IRON/CALCIUM CONTENT

Using Yichang residue having high iron/calcium content as a feed, its cracking performance, impurity removal performance and catalyst initial deactivation were investigated by continuously stirred tank reactor simulating ebullated bed. The results show that the reaction temperature is the main factor that affects the cracking rate and impurity removal rate. Pore plugging due to the deposition of coke and sulfide metals effects the catalyst deactivation and further the process economy. The content of iron and calcium is the key factor to determine whether an ebullated bed be adopted to refine high iron/calcium residue.