DHT	Device Description The hydrogenation part consists of reaction part (including new hydrogen/circulating hydrogen compressor) and fractionization part with designed nominal scale of 500kt/a, and annual commissioning hours of 8000h, this part uses the Sudan heavy oil catalytic cracking diesel oil as the raw material and makes desulfuration, denitrification and alkene saturation through catalytic
hydrogenation reaction forrefining catalytic diesel oil to improve the utilization performance of diesel oil product.   hydrogen recovery part was designed use raw material of catalyzed dry gas coming from RFCC unit, designed nominal scale of hydrogen output of 2173Nm3/h.