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Flue Gas Cleaning and Conditioning Plant
Depending on the fuel, size of the plant and the customer’s requirement, the flue gases from biomass energy plants are cleaned before they are directed outside via the chimney system.
Usually, the following components must be reduced or it has to be guaranteed that their vaLue is within the corresponding limits:
- carbon monoxide (CO)
- particulate matter (PMio, PM2.5)
- nitrogen oxides (NOx)
- organic hydrocarbons (VOC / HO
- chlorine and sulphur compounds (HCl and SOx)
- heavy metals
- dioxins and furans (PCDDs/PCDFs)
The following technologies are successfully utilised in Polytechnik energy plants for the reduction of these emissions:
- adiabatic firing with air staging
- centrifugal separators as well as single and multi-cyclones
- electrostatic precipitators (e-filters)
- tube and bag filters
- scrubbers and flue gas condensations
- adsorption and absorption plants with additive dosing
- denitrification plants (SNCR and SCR)
For some critical plant sites, the steam emissions, which are visible when wet fuels are used and the outside temperature is low, must be eliminated.
To achieve this, dozens of Polytechnik plants employ so-called devaporisation plants, which utilise patented procedures to eliminate the steam plume at the chimney outlet