关键词: 连续重整, 石脑油, 高密度催化剂, PS-Ⅷ

Abstract: In view of the demand for capacity expansion of continuous reforming units in some refineries, high-density catalyst provides a new technological solution for capacity expansion of existing units.The industrial test of domestic continuous reforming high-density catalyst PS-Ⅷ was carried out in SINOPEC Jiujiang Company.The industrial test results showed that under the operations of a fresh feed rate of 163.3 t/h, a WAIT of 519 ℃,a molar ratio of hydrogen to oil of 2.24 and a WHSV of 1.46 h^-1, the yield of C₅+ products was 88.4%, the RON of C₅+ products was 101.8, the yield of aromatics was 69.7%, and the yield of hydrogen was 3.85%. The consumption of catalyst was low, and coke deposition rate was equivalent to normal density catalyst. Under the operations of the same RON, the reaction temperature of PS -Ⅷ was 4 ℃ lower than that of PS -Ⅵ. Meanwhile, compared with PS -Ⅵ, the hydrogen yield, C₅+ product yield and aromatics yield of PS-Ⅷ were increased by 7.8 m³/t, 0.5 percentage point and 0.4 percentage point respectively, and the yield of LPG was reduced by 0.3 percentage point. PS-Ⅷ catalyst showed excellent reaction activity and stability when the content of light components in fresh feed rate was high and (naphthene+aromatics) content was lower than the designed value. The successful commercial application of high-density catalyst PS-Ⅷ is of great significance to the serialization of domestic continuous reforming catalyst.

Key words: continuous reforming, naphtha, high-density catalyst, PS-Ⅷ