International Processing Trade Fair for Powder, Bulk Solids, Fluids and Liquids

23 - 25 September 2025 // Nuremberg, Germany

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Exhibitors & Products POWTECH 2023
Zoom Image LOGO_Gas Blade

Gas Blade

LOGO_Gas Blade

Gas Blade

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Gas blade full discharge system


Phase 1
Product discharge starts with agitator rotating in its highest position. Agitator is slowly lowered in order to control the rate of discharge.
Once agitator comes to the lowest point of its stroke, phase 1 ends and heel remains in the filter-dryer.

Phase 2
At the end of phase 1, agitator is in the lowest position and rotates clockwise.
Through an independent circuit, gas is injected into nozzles located on one of the agitator arms.
Powder is displaced towards the periphery of the filter screen surface and then into the discharge hatch.


  • A set of spray nozzles installed on one of the agitator arms.
  • Gas blade nozzles are purged during all phases of process in order to prevent entry of product/slurry in the nozzles.

  • A special three way rotary union required for
    - heating fluid inlet
    - heating fluid outlet
    - carrier gas inlet
  • Discharge hatch must be provided with a vent connection complete with dust filter in order to guarantee evacuation of excess N2.
  • In order to prevent undesired leaks of heating fluid into the carrier gas circuit, all piping connections are welded.

Gas blade is being used on a vast number of applications.


  • Available on vessels from 0,2 to 10 m² filter surface area.


  • Complete cake removal
  • Low N2 consumption
  • Compact installation
  • Retrofitting on existing machines is available.

POWTECH offers concrete solutions for packaging-intensive industries. Industry guide


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