低生焦多产液化气重油裂化催化剂的开发与工业应用

采用高活性超稳分子筛和新型择形技术开发了低生焦多产液化气重油催化裂化催化剂M，在某石化公司重油催化裂化装置进行了工业应用。应用结果表明：在原料和操作工况大致相当的情况下，与空白标定相比，催化剂M占系统藏量达到80%时，在装置加工负荷增加5%的前提下，液化气收率和总液体收率分别增加1.72和0.18百分点，汽油收率和柴油收率分别下降1.23百分点和0.21百分点，油浆产率和焦炭产率分别下降0.14和0.16百分点，干气产率基本不变。低生焦多产液化气重油催化裂化催化剂M显示出强的重油转化能力和优异的焦炭选择性，可以在总液体收率不降低的情况下，将大量的汽油分子转化成液化气，满足装置的液化气生产需求。

DEVELOPMENT AND INDUSTRIAL APPLICATION OF HEAVY OIL CRACKING CATALYST WITH LOW COKING AND HIGH LPG YIELD

A heavy oil catalytic cracking catalyst M with low coke and high LPG selectivity was developed by using high activity ultrastable molecular sieve and new shape selective technology and applied in the RFCC unit of a petrochemical company. The application results showed that compared with the blank calibration, when the raw materials and operating conditions were roughly the same and the catalyst M accounted for 80% of the system reserves, the processing load of the device increased by 5%, the yield of liquefied gas and the total liquid yield increased by 1.72 and 0.18 percentage points, respectively, the gasoline yield and diesel yield decreased by 1.23 and 0.21 percentage points, respectively, the oil slurry and coke yield decreased by 0.14 and 0.16 percentage points, respectively, and the dry gas yield remained basically unchanged. The new developed catalyst M showed a strong bottom oil conversion ability and excellent coke selectivity and could convert a large number of gasoline molecules into LPG without decreasing the total liquid yield and can meet the LPG demand of the plant.