Dust Control Systems

Primary dust emission control requires two levels of balancing:

  1. Balancing of (building) air exhaust and HVAC air intake. For economic reasons adequate distribution, e.g. by cool-jets, of the required fresh air volumes per area and optimal recirculation rates should be modeled.
  2. Balancing the dust extraction systems in the context of De-dusting system design consists of 3 major attention points:
    • Overall system design; Dust Collector / fan / piping and balancing of the extraction points, generating adequate extraction capacity and pressure for all equipment connected. GCM™ modeling is applied to flow and pressure balancing of De-dusting systems for Primary, CRES and Expanded Tobacco (DIET) processes.
    • Machine interface, resulting in tobacco GMP based extraction hood designs with attention for ergonomics, accessibility and clean ability. JOA Deflector™ patented hood concept.
    • In-line product recovery with Pre-separator-cyclones and pulse separators; e.g. tobacco recovery at extraction hoods and stem recovery for reprocessing.

Applying this engineering approach, we minimize extraction capacity and reduce installation CAPEX and operational cost by minimizing the make-up amount of expensive, conditioned, HVAC air.

Since 1998, JOA has designed and built Primary exhaust systems with the key purpose of providing:

  • MAC compliant dust emissions to the operators; Emission level: <1 mg/m³ (8hrs TWA).
  • Exhaust control; dust emission level: <5 mg/m³; TA-Luft / NeR.
  • Guaranteed stable processing and minimized system fouling.

Download the JDF-leaflet