fouling corrosion report_condensedscript
TRANSCRIPT
FOULING & CORROSION
FOULING - Definition
Fouling is the aggregation and settling of insoluble material [suspended in the fluid through physical processes] into the surfaces of the equipment where the fluid flows .
FOULING - Definition
FOULING - Effects
Increases thermal resistance Equipment depreciation Maintenance requires extra
manpower Lower returns to scale
FOULING – Types (Location) Shell-side fouling Tube-side fouling Rotor fouling Fin fouling
FOULING – Types (Cause)
Corrosion fouling Biofouling Chemical reaction fouling (ex.—
Coking) Particulate fouling Precipitation fouling (ex.—Scaling) Freezing fouling
Biofouling
Particulate fouling
FOULING - Causes
Suspended Solids Organic Contamination Iron and Manganese Corrosion Products Treatment Products Microbial Growth
FOULING – Causes (Build-up) Asymptotic fouling
Linear fouling
Falling rate fouling
CORROSION- Definition
gradual degradation of materials by chemical reaction with its environment
CORROSION- Definition
CORROSION - Effects
Contamination Blocked fluid flow Leakage
CORROSION – Mechanisms of Action
General or Uniform Pitting
CORROSION – Types (Causes)
Stress corrosion cracking Galvanic (electrical current)
corrosion:
CORROSION – Types
Crevice corrosion Intergranular corrosion
CORROSION – Causes (factors) fluid chemistry fluid or metal temperature fluid flow rate material selection metal working (forming or welding) maintenance or cleaning frequency fouling film formation
CORROSION - Causes
Solution to Fouling and Corrosion
Maintenance Acceptance
FOULING and Corrosion - Prevention
Knowledge Prediction