Typical Glass Failure

Typical Glass Failure

1. Mechanical shock

Mechanical shock is 75% reason for glass failure

1. Impact due to heavy object fall on reactor
2. Object fall in reactor. Example: Bolt or metallic parts, stones etc.
3. Improper support and heavy vibration.
4. Wrong impeller direction and over torque.

2. Acid attack

Hydrofloric acid and Phosphorus acid with 85% Concentration corrodes glass lining maximum.

Rest Chemicals chart as seen above.

3. Abrasion

Chemical process in Glass lined Reactor with

• High viscous chemicals
• Slurry
• Solid particles contained chemicals reactions

Rubbing surface of glass lining of reactor and making rough like sand paper.

This rubbing breaks silica network and boosting corrosion of glass lining.

4. Thermal shock

We already discussed this topic above.

5. Electrostatic discharge failure

When two components mixed together then they transfer electron and generates static charge.

When proper static is not discharged static accumulation takes place. This static is discharge with pinhole of crack. This damage is continuously damage more glass lining.

Static charge generation can be reduced by

1. Adding water or quick solvent.
2. Reduction in agitation.
3. Adding dip lines for chemical dosing and Avoiding free flow of Chemicals
4. Proper grounding of Chemical mixture and Reactor.