Deaerator Case Studies – Kansas City Deaerator

Deaerator Case Studies

Tray upsets

TRAY UPSETS

Problem: An example of a tray upset.

High Oxegen Levels

HIGH OXYGEN LEVELS

Problem: Poor dissolved oxygen readings.

Scrubber Modification

SCRUBBER MODIFICATION

Problem: Deaerator scrubber was inadequately sized.

Heater Steam Erosion

HEATER STEAM EROSION

Problem: Heating section can be eroded by steam.

Dogleg pipe

DOG LEG VENT PIPE FAILURE

Problem: Dog leg vent fails due to inadequate welding.

Tray Hold Downs

TRAY HOLD-DOWNS

Problem: Tray holdowns on older units.

Deaerator Erosion

DEAERATOR EROSION

Problem: Deaerator thinning out due to erosion.

corrosion

CORROSION

Problem: Corrosion pits in deaerator storage section.

corrosion

SPRAY DEAERATOR CORROSION

Problem: The deaerator had a catastrophic explosion.

Tray Box Support Pitting

TRAY BOX SUPPORT PITTING

Problem: Pitting was noticed on the supports of tray box.

tray enclosure support wear

TRAY ENCLOSURE SUPPORT WEAR

Problem: The tray enclosure supports were ruined.

Waterbox Spray Pattern

WATERBOX SPRAY PATTERNS

Problem: Water carrying over to the vent.

FAC

FLOW ACCELERATED CORROSION (FAC)

Problem: Vessel had severely high corrosion due to FAC.

Chloride Attack

CHLORIDE ATTACK TRAY ENCLOSURE

Problem: Vessel had severely high corrosion due to FAC.

Replacement Vent

CHICAGO HEATER REPLACEMENT VENT

Problem: The deaerator had water out the vent.

Deaerator Explosion

DEAERATOR EXPLOSION AND FAILURE

Problem: This deaerator is open to oxygen attack.

Water Bypass

SPRAY DEAERATOR WATER BYPASS

Problem: Water is bypassed in this spray deaerator.

Stress crack

STRESS CRACK IN VESSEL SHELL

Problem: Water is bypassed in this spray deaerator.

Weld Overlay

WELD OVERLAY ON DEAERATOR

Problem: The deaerator had water out the vent.