Project Review:

Project: FCCU Revamp

Customer: Refinery
Location: Lanzhou
Original Capacity: 280 kt/a

Objective:

First Revamp: 350 kt/a
Second Revamp: 450 kt/a
Revamp tower internals to reach 450 kt/a at first step

Scope:

Main Fractionator 2400/2800mm
Light Diesel Sidestripper
Four columns of gas plant:
Primary Absorber,
Sponge-Absorber,
Stripper,
and Debutanizer

Solution:

Keep column vessel unchanged. ADV trays replaced V1 trays one by

One in four columns of gas plant. MSR random packings were

adopted to revamp sidestripper

Super tray deck connection

Adopt Bubble promoter

Result:

Great operation flexibility: from 350 kt/a to 450 kt/a

Better separation efficiency: Temperature difference between light diesel

and gasoline,reduced from +10℃ to -10℃