国内外大多数FCC装置的粗汽油干点都是通过塔顶温度定值控制加以控制的。高桥石化公司炼油厂曾采用此方案控制过,粗汽油干点波动较大,平均极差达4.75℃,一个月的粗汽油干点平均值仅为198.4℃,比产品质量标准规定(汽油干点(?)204℃)低5.6℃。 1987年3月起,该炼厂探讨FCC粗汽油干点,采用计算机闭环控制。先由大量工艺图表和工艺计算方法推导出粗汽油干点初 Crude gasoline at most FCC units at home and abroad is controlled by the overhead temperature control. Takahashi Petrochemical refinery has been used to control this program, the crude oil dry point fluctuations, the average difference of 4.75 ℃, a month’s average of only dry gasoline naphtha was 198.4 ℃, higher than the product quality standards (gasoline dry Point (?) 204 ° C) is 5.6 ° C lower. March 1987, the refinery to explore FCC naphtha dry point, the use of computer closed-loop control. First by a large number of process charts and technical calculations derived crude gasoline dry point early