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Rubber Lining of Acid Tanks



At one of the chemical factory, the client had to paint an Acid storage tank of 28 m diameter and 10 m height. High humidity during monsoons resulted in condensation during painting inside the surface of the tank. This lead to dilution of adhesive and loss of its strength. Because of condensation and inadequate adhering of coating, the complete process had to be repeated. Blooming, peeling and other coating related problems delayed the project. Acid proof rubber lining is used on the internal surface of tank to prevent corrosion and acid attack on the tank surface.


For the short term humidity control requirement, TECHNICAL DRYING SERVICES (TDS) was hired for providing dry, dehumidified air through desiccant dehumidifiers. Dehumidifiers maintained Relative Humidity (RH) at 60-65% in the acid storage tank during the project. Strict environment control helped achieve the perfect acid lining with no defects caused by condensation.

Some other benefits of using a dehumidifier:

  • Coating is possible in highly humid conditions.
  • Downtime can be accurately planned.
  • Reduction in project time.
  • Life of the coating is increased by 1.5 to 2.0 times.
  • Dehumidifiers help maintain the ideal conditions as recommended by paint manufacturers.
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