Environmental technology
Dry electrostatic precipitator (ESP)
Reduce dust and ash particles
Dry electrostatic precipitators are used to treat
- hot gases created when wood and biomass are incinerated and
- at energy plants and co-incineration plants to reduce dust and ash particles.
Any dry dust produced may simply be disposed of later.
At a glance:
Gas inlet:
High voltage system:
Installations:
| Ash discharge:
Gas outlet:
|
Most economical solution
The wood-based panel industry generally views dry electrostatic precipitators as the most cost-effective solution to the reduction of particles in hot combustion gases as it is easily possible to dispose of the separated ash or convey it to downstream processing (e.g. wet ash extractors). Particle separation efficiencies in excess of 99% can be achieved.
ESPs are characterised by long service lives as a result of tried-and-tested material concepts. The low pressure losses of less than three millibars and low maintenance requirements also help keep operating costs at manageable levels.
Gas inlet with integrated gas distribution
The dry electrostatic precipitator essentially consists of a gas inlet with integrated gas distribution, which also acts as a pre-separator, one or more electrostatic precipitator fields, and the gas outlet with an integrated cross-separator to reduce dust peaks.
The separated particles fall into the hoppers below after the collection electrodes have been cleaned by rapping and are removed by means of continuously running ash screws.
Available as a multi-stage system combination for separation in conjunction with upstream desulphurisation by dry-scrubbing (DeSOx) and downstream catalytic denitrification (SCR-DeNOx).
Design dry electrostatic precipitator exterior
- High voltage conversion system
- Gas intry
- Gas escape
- Crude Gas
- Pure Gas
- Ash bunker
- Bunker screw
- Collector srew
- Rotary valve
Design dry electrostatic precipitator interior
- Baffle plates
- Gas distributor
- Cross separator
- Spraying electrodes
- Collecting electrodes
- High voltage isolators
- Rapping collecting electrodes
- Rapping spraying electrodes
Design dry electrostatic precipitator exterior
- High voltage conversion system
- Gas intry
- Gas escape
- Crude Gas
- Pure Gas
- Ash bunker
- Bunker screw
- Collector srew
- Rotary valve
Design dry electrostatic precipitator interior
- Baffle plates
- Gas distributor
- Cross separator
- Spraying electrodes
- Collecting electrodes
- High voltage isolators
- Rapping collecting electrodes
- Rapping spraying electrodes