深度脱硫的渣油加氢处理RHT技术研究

采用中国石化海南炼油化工有限公司（简称海南炼化）渣油加氢（RDS）原料和第三代渣油加氢处理（RHT）系列催化剂开展了RHT工艺研究。通过催化剂的级配研究和RHT级配催化剂的容金属能力模拟计算，确定了优化的催化剂级配方案。采用优化的催化剂级配方案开展了工艺条件研究，结果表明，为了实现长周期稳定生产硫质量分数不大于0.20%的加氢生成油，海南炼化RDS装置体积空速应至少降低至0.20 h-1。加氢生成油硫质量分数不大于0.17%的稳定性试验结果表明，采用优化的催化剂级配方案和适宜的工艺条件（氢分压15.0 MPa，氢油体积比700，体积空速0.20 h-1），第三代RHT系列催化剂在1 000 ~ 2 000 h运转过程中的失活速率为0.082 ℃/d，可以满足工业装置长周期运转的要求。

STUDY ON RHT TECHNOLOGY FOR DEEP DESULFURIZATION OF RESIDUE

Hainan RDS feedstock and the third generation RHT series catalysts were used for studying RHT process. The optimized catalyst grading and the calculated metal capacity of RHT graded catalysts were investigated. The process experiments were conducted using the best gradation of catalysts and the results indicated that to produce hydrotreated oil with sulfur content lower than 0.20%, the volume space velocity is at least reduced to 0.20 h-1. The stability test to produce hydrotreated oil with the sulfur content lower than 0.17% showed that using the optimized catalysts gradation and the appropriate process conditions (the partial pressure of hydrogen of 15.0 MPa, the standard state volume ratio of hydrogen to oil 700, the volume space velocity 0.20 h-1), the average deactivation rate of third generation RHT series catalysts is 0.082 ℃/d from 1 000 h to 2 000 h, which meets requirement for the long period operation.