关键词: 加氢精制, 调和, 安定性, 棉籽油, 催化裂化-加氢组合工艺

Abstract: Hydrotreating of gasoline and diesel fractions from cottonseed oil catalytic cracking were investigated by auto-control micro-reaction equipment. For gasoline fraction, under the following operating conditions: reaction temperature of 190 ℃, hydrogen partial pressure of 1.6 MPa, volume space velocity of 4.0 h-1, hydrogen to oil volume ratio of 300, the olefin content of the treated gasoline met the requirement of National Standard Ⅳ for motor gasoline, and its calculated octane number (RON) remained at 88. For diesel fraction, under the following conditions: reaction temperature of 280 ℃, hydrogen partial pressure of 4.0 MPa, volume space velocity of 2.0 h-1, hydrogen to oil volume ratio of 420, its cetane number increased from 25.8 to 30; iodine value decreased from 11.9 gI•100g-1 to 4.6 gI•100g-1; the mass concentration of total insoluble decreased from 3.4 mg•100 mL-1 to 2.1 mg•100 mL-1 , indicating that the oxidation stability of hydrotreated diesel could meet the requirements of National Standard GB/T 19147-2003. A mixture of 0# diesel fuel containing 30% hydrotreated diesel from cottonseed oil well met the specifications of 0 # diesel fuel standard.

Key words: hydrotreating, blend, oxidative stability, cottonseed oil, catalytic cracking- hydrotreating