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Environmental technology


Wet electrostatic precipitator (WESP)

Separate particles and aerosols, VOCs and formaldehyde

Wet electrostatic precipitators are employed to treat waste air from wood-drying plants and press systems, mainly to separate particles and aerosols, VOCs and formaldehyde.

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At a glance

Quenche:

  • Evaporation cooling to dew point
  • Particle pre-separation
  • Pre-absorption stage for volatile emissions

 

Scrubber:

  • Gas distribution as scrubber level
  • Spraying up and down streams
  • Square spray pattern (full cone)

 

High voltage system:

  • Coiled flat strip electrode
  • 360° corona effect along entire length

Installations:

  • Precipitation electrode as hexagonal honeycomb
  • Maximum separation surface
  • Field flushing using axial full cone nozzle

 

Integrated process water treatment:

  • Three-stage system
  • Waste-water minimisation
  • Dewatering container

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Reduction of odour emissions

It is possible to efficiently separate emissions from dryers and presses with the help of state-of-the-art wet electrostatic
precipitators.
The blue haze plume that is visible in the surroundings is noticeably diminished while unpleasant odour emissions are also reduced.
The high affinity to water results in the production of highly corrosive organic acids, which is why all components that come into contact with the media are manufactured from stainless steel.
The optimum design and delivery of the plant parts in the largest possible components allows production, transport and installation to be carried out cost-effectively. 


Extraction of thermal energy

WESP systems essentially consist of three separation stages on the waste-air side, i.e. with quench, scrubber and electrostatic precipitator.
The integrated absorbate-circulating-water treatment consists of the separator for oversized material (drum screen), the main flow filtration system (absorbate filter) and the fines separation system (flotation).
It is possible to extract thermal energy from the circulating water and use it to pre-heat air and heat buildings and for district heating.
 

Design wet Electrostatic precipitator

  1. Clean Gas
  2. High voltage aggregate
  3. Clean air tube
  4. Crude Gas
  5. Field Flushing
  6. Quenching duct
  7. High voltage field
  8. Scrubber/Gas distribution
  9. Scrubber sprinkling
  10. Concrete box for Flotation & Drum screen
  11. Technical room for equipment
  12. Dosing room

Wet Electrostatic precipitator technical room

  1. Purge air heater
  2. Purge air flap
  3. Pneumatic flap
  4. Absorbate tank
  5. Thick matter pump
  6. Sump pump
  7. Sump
  8. Back flush filter
  9. Absorbate pump
  10. Flowmeter

Design wet Electrostatic precipitator

  1. Clean Gas
  2. High voltage aggregate
  3. Clean air tube
  4. Crude Gas
  5. Field Flushing
  6. Quenching duct
  7. High voltage field
  8. Scrubber/Gas distribution
  9. Scrubber sprinkling
  10. Concrete box for Flotation & Drum screen
  11. Technical room for equipment
  12. Dosing room

Wet Electrostatic precipitator technical room

  1. Purge air heater
  2. Purge air flap
  3. Pneumatic flap
  4. Absorbate tank
  5. Thick matter pump
  6. Sump pump
  7. Sump
  8. Back flush filter
  9. Absorbate pump
  10. Flowmeter