Abstract: As a renewable resource that is expected to completely replace petroleum based jet fuel in the future, bio-jet fuel has become increasingly important to the aviation industry. At present, the production of jet fuel from bio-oil via HEFA technology has achieved industrial application. Aiming at the problems of complex pretreatment of raw materials and single component of jet fuel in the existing HEFA technology, based on the molecular structure characteristics of bio-oils, the molecular structure of fatty acid methyl ester was catalytically reformed on a special molecular sieve catalyst, so that it was partially converted into aromatics and naphthenes. The catalytic reforming index (CRI) was used to measure the degree of hydrogen transfer and cyclization reactions. Small scall experiments were carried out to obtain the middle distillate rich in aromatics and naphthenes. The middle distillate was hydrotreated to obtain the bio-kerosene rich in aromatics and naphthenes. The experimental results showed that after the fatty acid methyl ester was treated by the integrated technology of catalytic reforming and hydrofining, the yield of bio-jet fuel was more than 65%, the yield of light olefins was about 10%, the net calorific value of bio-jet fuel was 45 MJ/kg, the freezing point was less than -65 ℃, and its density was close to that of petroleum based jet fuel.

Key words: bio-oils, fatty acid methyl esters, catalytic reforming, hydrofining, bio-jet fuel