FGD Tanks, Sumps, Trenches & Outlet Ducts

Posted On : Wednesday, March 29th, 2023 in News

India’s enormous energy needs are compelling a huge expansion of its installed power capacities. In response to the environmental implications of these high targets, the Indian Power Ministry has mandated clean coal technologies for the new generation of power plants, and has implemented major emission controls for existing plants, including installing flue gas desulfurization (FGD) systems.

One of the world leading FGD technology providers received numerous orders for installations of FGD Systems, from a national thermal power provider. The technology provider contracted our partners in India, Kirloskar Corrocoat Pvt Ltd (KCPL), to provide corrosion protection for FGD tanks. One of the projects also included work on roller compacted concrete (RCC) sumps, trenches, tanks and the outlet ducts of an absorber.

 

Surface preparation and coating application for RCC surfaces, ie sumps and trenches were as follows:

Surface Preparation: Abrasive blasting as per SSPC SP 13 / NACE No. 6 & SP 5 Data Sheet for Concrete Substrate requirement for coating.

Coating Application:

  • Airless Spray application of Polyglass PPA at 100 microns / Polyglass VEF at 600 microns.
  • Brush application for stripe coating of Polyglass VEHA.
  • Hand applied laminating resin 600 and glass fibre matting.
  • Airless spray application of Polyglass VEF at 1.22 mm DFT = Total 3mm dry film thickness (DFT).

 

    FGD surface prep1

    RCC Sump                                                                                                                                   RCC Trenches

     

    The surface preparation and coating application for the metallic substrates and equipment, ie tanks and outlet duct of an absorber, are outlined below:

    Surface Preparation: Abrasive blasting as per SA 2.5/ NACE No. 2/SSPC-SP10

    Coating Application:

    • Airless Spray application of  Polyglass PPV at 100 microns / Polyglass VEF at 600 microns
    • Brush application for stripe coating of Polyglass VEHA
    • Hand applied laminating resin 600 and glass fibre matting @ 1.2 mm DFT.
    • Airless spray application of Polyglass VEF at 1.22 mm DFT .
    • Total 3mm dry film thickness (DFT).

    FGD surface prep2

     

    Having already completed 3 projects in 2022, KCPL look forward to further work in accordance with the client’s ongoing projects.

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