全厂优化降低柴汽比措施及应用

Measures and Application of Optimizing Reducing Diesel-gasoline Ratio in the Whole Plant

国内某单套千万吨炼厂为增产汽油、降低柴汽比,对全厂加工流程进行整合优化。通过提高催化装置负荷、连续重整装置扩能及优化重整原料、蜡油加氢裂化装置掺炼常三线等多项措施,全厂柴汽比由优化前的1.49降至0.92,汽油收率由25.83%提至30.81%;优化后一季度,生产汽油82.88万t,与优化前同期相比,原油加工量按相同基准计算,单季度增产汽油10.24万t;汽柴油价差按500元/t计,可实现经济效益2.05亿元/a。

In order to increase gasoline production and reduce diesel to gasoline ratio,the whole processing process of a domestic refinery of 10 million tons was integrated and optimized.By improving the FCC gasoline yield,big FCC unit load,CCR unit capacity and optimize the reforming feedstock and hydrocracking unit blending third atmospheric side-stream scheme and measures,the whole factory diesel to gasoline ratio from 1.49 before optimization to 0.92,gasoline yield increased from 25.83%to 30.81%.In the first quarter after optimization,828800 tons of gasoline was produced.Compared with the same period before optimization,crude oil processing volume was calculated on the same basis,102400 tons of gasoline was increased in a single quarter.The price difference of gasoline and diesel is calculated at 500 yuan/t,and the economic benefit can be 205 million yuan/a.