Cause Analysis and Solution of Internal Leakage of Reboiler at Bottom of Stabilizing Tower of Catalytic Cracking Unit
The reboiler at the bottom of the stabilizing tower of the catalytic cracking unit has tube bundle leakage after one year of operation,and the overhaul found that there is friction damage in the contact part of the tube bundle between the heat exchange tube and the baffle rod,and the heat exchange tube has been broken at the serious place.This paper analyzes from three aspects:structural design,medium corrosion and operation mode,and thinks that unreasonable structural design is the root cause of tube bundle leakage.The heat exchanger is changed from baffle-rod U-tube heat exchanger to baffle-plate floating head heat exchanger,and the shockproof plate and support plate are set up to solve the problem of tube bundle leakage.
reboilertube bundle leakagebaffle-plate floating head heat exchanger
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