Industrial Filtration Systems
The Filtration Range
From replacement filter elements to complete wet scrubbing and ceramic filtration systems, each option targets a different part of the emissions problem.
Ceramic Filter Elements for High-Temperature Duty
Filter elements are the working part of a ceramic filtration system: rigid, hollow candles that the flue gas passes through, capturing sub-micron particulate on the outer surface while cleaned gas continues to the stack. We supply them within new systems and as spares for units already in service.
Because the elements are rigid ceramic rather than fabric, they hold their shape and their rating at temperatures that destroy bag filters, and they tolerate acidic and abrasive gas streams. Cleaning is by reverse pulse in place, so a change-out stays a planned maintenance task.
- Rigid ceramic construction
- High-temperature rating
- Sub-micron particulate capture
- Reverse-pulse cleaning in place
- Resists acidic gas streams
- Supplied new or as spares
Wet Scrubbers for Acid Gas Removal
Our wet scrubbers remove acid gases from a flue gas stream by drawing it through a fine spray of alkaline solution. Hydrogen chloride, sulphur dioxide and hydrogen fluoride are absorbed into the liquid, and the gas is cooled on its way to the stack.
Wet scrubbing suits high acid-gas loads and sites with a reliable water supply and a route for treating the effluent. Supplied within a Macrotec thermal plant or fitted to existing equipment, with the vessel and dosing sized to gas volume and inlet loading.
- Neutralises HCl, SO₂ and HF
- High acid-gas removal
- Alkaline reagent dosing
- Flue gas quenching and cooling
- Sized to gas volume
- New plant or retrofit
Ceramic Filtration Systems
A complete ceramic filtration system pairs dry scrubbing with high-efficiency particulate capture. A dosing agent, sodium bicarbonate and/or activated carbon, is injected into the flue gas to neutralise acid gases and adsorb heavy metals and dioxins, then the gas passes through the ceramic elements.
Because the scrubbing is dry, there is no effluent and no water treatment to build, licence or maintain. Removing acid gases at high temperature also prevents dioxins reforming downstream, which is why the combination is recognised as Best Available Techniques under the EU IED.
- 99.99% filtration efficiency
- No water, no effluent treatment
- Bicarbonate or activated carbon
- Sub-micron, PM2.5 and PM10
- Prevents dioxin reformation
- Best Available Techniques (BAT)
Filtration That Holds Up in Service
High-temperature capability
Rigid ceramic elements hold their rating where fabric bag filters fail, so filtration performance survives the gas temperatures thermal plant actually runs at.
Wet or dry, matched to site
Wet scrubbing where acid-gas loads are high and water is available, dry scrubbing with ceramic filtration where effluent handling is impractical.
New plant or retrofit
Supplied integrated with Macrotec thermal equipment or fitted to existing plant, with elements and spares available long after commissioning.
Filtration for Stacks Across Heavy Industry
Macrotec filtration systems run on incinerator and cremator stacks and across cement, mining, chemical and waste-to-energy plants, wherever particulate and acid gases must be brought within limits.
Incinerator & cremator stacks
Cement, lime & minerals
Mining & metallurgy
Chemical & petrochemical
Foundries & smelters
Waste-to-energy & municipal
Built for Emissions Compliance
Our filtration systems are specified against the emission limits that govern our clients' operations, supporting the EU Industrial Emissions Directive (2010/75/EU) and South African NEM:AQA, with dry scrubbing and ceramic filtration recognised as Best Available Techniques, and the applicable requirements confirmed for each project. Our quality, environmental and occupational health and safety management systems are independently certified to ISO 9001, ISO 14001 and ISO 45001.
Specify Your Filtration System
Tell us about your gas volume, inlet loading and emission limits, and our engineers will help you specify the right filtration system.