|Regular Cyclones and Multicyclones | Problem: Low Efficiency
Preferred technology for particle collection in industrial boilers and furnaces due to its robust construction, absence of moving parts and general application (low CAPEX).
Main drawback: low efficiency for small particles (<10μm) leading to non-compliance with new emission limits.
|Bag & Ceramic Filters | Problem: O&M costs
Bag filters are very efficient (> 99.9 %) but can be very maintenance demanding in the presence of high temperatures due to frequent cleaning and changing of filter elements, which are frequently attacked by glowing particles. The ceramic filter solution is more expensive and costly to operate. In drying applications, filter clogging is a frequent problem due to high moisture.
|ESPs | Problem: High Investment
Robust equipment with low pressure drop and very effective for a given range of dust required. However, efficiency may drop outside that range as a consequence of temperature changes. Require to be operated by trained and specialized personnel. Ultimately, ESPs high investment costs are out of reach of many companies.
|Wet Venturi Scubbers and WESPs | Problem: Secondary Pollution
Scrubbers can be very efficient by increasing pressure drop and energy costs. WESPs work with low pressure drops but have high OPEX and CAPEX. Both require the use of water, originating secondary pollution.
Clients' needs include a highly efficient final dedusting system at a reasonable price, robust enough to operate for several years without significant maintenance or operating costs and avoiding production downtime.
ACS solutions include low pressure drop, compact and long-lasting pre-separators and high efficiency cyclones which are a real alternative to other more maintenance demanding or costly dedusters to reach emissions as low as 30mg/Nm3. Please see our case studies for several specific industrial segments.
Technology comparison for wood chip combustion