Abstract: Ultra-deep diesel desulfurization technology (RTS) developed by RIPP has been adopted in a newly built 2.6 Mt/a diesel hydrotreating unit in Yanshan company SINOPEC since Sept. 2013 using RS-2000 catalyst and guard catalyst RG-1 to produce diesel meeting phase V Beijing standard. The industrial application results show that the device operats smoothly and the sulfur content of diesel product is less than 10 ?g/g. RS - 2000 catalyst exhibits a good active stability and can produce ultra-low sulfur diesel for a long period at low pressure; The energy consumption of the unit is 344.17 MJ/t, 53.62 MJ/t less than the design value of 397.79 MJ/t.