GEA is a reliable partner for gas-cleaning solutions across a wide range of production processes. Gas-cleaning systems can form an important part of process chains designed to control air emissions.
GEA offers a range of separation and filtration technologies for particle removal. Depending on the process requirements and flue-gas composition, the following emission-control devices may be used for flue-gas dedusting:
- Fabric filters
- Ceramic candle filters for hot-gas filtration
- Electrostatic precipitators
- Wet scrubbers
Stricter emission requirements can require particulate-emission levels below 10 mg/m³. GEA’s ECOpuls system uses surface-active filter media and low-pressure regeneration of filter elements.
Some industrial applications require dedusting at temperatures of up to 500°C. The GEA ceramic candle filter is designed for particulate removal at elevated temperatures. With the BisCat design, it can also enable the simultaneous removal of acid gases and NOx.
Electrostatic precipitators are used in flue-gas cleaning to capture particulate matter through electrostatic attraction. Dry electrostatic precipitators are commonly used in flue-gas-cleaning applications, while wet electrostatic precipitators can be suitable for chemical-process gas streams and gases saturated with water vapour.
In a wet scrubber, a gas stream is brought into contact with a liquid stream, allowing specified components of the gas stream to be absorbed into the liquid. These components can include solids, liquids or gases. Depending on the process and the pollutants present, gas scrubbers can be used for both dedusting and the separation of specified pollutants.
Products
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Aerosol separator systems
A suspension of fine solid particles or liquid droplets, in gas is called aerosol and can be separated by different working principles.
Annular gap scrubber
Seeking to provide a flexible unit, capable of mastering manifold industrial off-gas problems, resulted, in 1950, in the development of an adjustable annular gap scrubber which today ranks among the outstanding high-efficiency scrubbers. As far as grain size of solid and liquid dust particles and concentration of gaseous components in a gas mixtu...
Bagfilter (ECOpuls)
Bagfilters are the technology of choice in many cases when low dust content is needed for gas cleaning. Their ability to remove large Ioads on a non-selective basis has made them important for many applications.
Catalytic ceramic candle filter (BisCat)
BisCat ceramic filters with an embedded catalyst matrix consists of vanadium pentoxide, allow for the removal of particulates, sorption processes for acidic gases, reduction of NOX and the decomposing of dioxins, VOC`s. The filter elements are chemically inert and corrosion resistant. Gas cleaning in one step. A multifunctional filter for the sim...
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The water equation
Across Europe, drought is a recurring reality – and no longer confined to the south. While water increasingly shapes where industries locate, its value is determined by local context. There are many technological routes to water efficiency in industrial processes, but location, energy needs and other factors are also key.
