BFV tray, louver jet tray and SFV tray were used in separate sections of the FCC main fractionator.

• 根据催化裂化主分馏塔各段的汽液负荷及结盐、结焦情况,采用BFV固阀塔板、百叶窗式喷射塔板以及SFV浮阀塔板成套技术对其进行改造。