Hydrodearomatization technology is to add benzene ring into aromatics to form cycloalkanes by hydrogenation in order to remove aromatics.
Because of aromatics have some toxicity, so many industries restrict its use, particularly in the edible solvent oil industry, the content of aromatics are particularly demanding. In recent years, environmental requirements are becoming more stringent, not only the aromatic content of solvent oil is becoming more and more strict, other petrochemical products also have certain requirements for aromatic content ,so hydrodearomatization is becoming more and more important.
1, Adaptable raw material
It can be used in hydrodearomatization process of several raw materials to produce aviation kerosene, low aromatic solvent oil, environment friendly solvent oil, diesel oil , white oil, lubricating oil.etc
2 ,Physicochemical properties of catalysts
Item | Index |
Appearance | Black or gray-black cylindrical particles |
Size，mm | 5× 5 |
BET，m2/g | 80~150 |
Bulk density ，g/cm3 | 0.9-1.2 |
Radial compressive strength，N/Cm | ≥100 |
Ni+Mo，wt% | ≥40 |
3, Process conditions
Item | HDAr |
Temperature，℃ | 130-250 |
Pressure ，MPa | 2.0-6.0 |
WSV，h-1 | 0.2-3.0 |
GLR, V:V | 100-300 |
4.Schematic diagram of hydrodearomatization technical process
5, Process characteristics.
Nickel catalyst is used，compared with precious metal catalyst its cost is lower. The method of cyclic heat is adopted, the temperature rise is controlled, it makes the reaction can run long at low temperature, and the reaction balance can move to a favorable direction and Increase the conversion rate, improve the service life of catalyst.