Process optimization of producing industrial crude white oil in wax oil hydrocracking unit
Industrial crude white oil product was produced by increasing the reactor bed tempera-ture,optimizing product fractions,and increasing the flash point of aviation kerosene and diesel in the 2.1 Mt/a wax oil hydrocracking unit of Yunnan Petro-chemical Co Ltd of PetroChina.The results showed that the produced diesel reached the standard of 5#crude white oil,and the aviation kerosene,except for the mass fraction of aromatics,reached the stan-dard of 3#crude white oil after optimizing the process operation parameters of the unit.However,the total yield of aviation kerosene,diesel and crude white oil decreased by 5.33 percentage points.High tempera-ture could promote the hydrogenation reaction of polycyclic aromatic hydrocarbons,which was bene-ficial for improving the color of the product oil.The light fraction of aviation kerosene had the highest mass fraction of aromatic hydrocarbons.Through in-creasing the top temperature of the fractionation tower and the bottom temperature of the aviation kerosene tower and increasing the amount of steam extracted from the diesel tower,the flash points of aviation kerosene and diesel increased from 48,91℃to 69,125℃respectively.After using the diesel dehydra-tion device,the water content of diesel was only 85 μg/g.
wax oil hydrocrackingaviation kerosenedieselcrude white oilreactorfractiona-tion towerflash point
万方数据
维普
