An intermediate course to develop the engineers and operators deals with Materials and Corrosion Control about chemical cleaning principle, uses, procedures, and its applications.

Principles of chemical cleaning:

• Sampling and solubility testing prior to chemical cleaning.
• Which chemicals are useful?
• Chemical cleaning techniques are varied.

Chemical cleaning equipment:

• Components for field use.
• Mobile chemical cleaning rigs.
• Centralized facilities.
• Typical chemical cleaning tanks for field and shop use.
• Use of standard fittings for chemical connections.
• Typical acid cleaning rig and transporter.
• Typical exchanger cleaning area.

Coolers and condensers :

• Off stream cleaning techniques.
• On-stream cleaning is preferred method.
• Air side of air fin exchangers.

Process side deposits:

• Techniques for chemically cleaning exchangers.
• Techniques for chemically cleaning towers.
• Which solvent do you choose?
• Techniques for cleaning piping and pipelines.
• Techniques for cleaning furnace tubes.
• Techniques for cleaning miscellaneous equipment.
• Techniques for cleaning to achieve low sulfur standards (catalyst conversion).

Steam generators:

• Deposits in low pressure boilers.
• Deposits in high pressure boilers.
• How much deposit can you tolerate.
• Determining boiler cleaning schedules.
• Recommended procedure for determining cleaning frequency.
• How to select a boiler cleaning process.
• Cost of cleaning varies according to amount of deposit.
• Cleaning non-drainable and non-ventable systems.
• Preparation for acid cleaning (HCl or citric).
• Alkaline detergent wash for oil and grease removal.
• Boiler cleaning with hydrochloric acid.
• Boiler cleaning with ammoniated citric acid.
• Boiler cleaning with chelating agents (dow vertan 675 or halliburton macor).
• Testing and post cleaning inspection.
• Post cleaning passivation and start-up.

Engineers, operators and lab chemists who deals with Process, Materials and Corrosion Control.