Specific emission control processes
Aerosol separator system
A suspension of fine solid particles or liquid droplets, in gas is called aerosol and can be separated by different working principles.
Inertial separation
The aerosol and particulate matter removal system (AFAS), like the Venturi scrubber, uses the principle of inertia to separate the aerosols.
In this case, a high-pressure or two-fluid nozzle produces a liquid droplet that is fast and as small as possible. The aerosol collides with this droplet due to its inertia. In a second step (coalescing stage), the formed conglomerate of aerosol and liquid droplets is separated from the gas stream.
Advantages
- Defined separation of aerosols
- High reliability
- Little maintenance
- Wide area of application, can be fexibly combined and extended
- Available in all materials
Applications
- Power range of up to 200.000 m³/h exhaust gas
- Particle and aerosol separation
Diffusion and barrier effect
With the aid of suitable ceramic filter candles or bag filters, liquid or solid aerosols are separated. Filter candles are usually used to separate liquid aerosols. The gas to be cleaned is passed through a filter. Diffusion and barrier effect cause a collision of the aerosols with the densely packed material of the filter candles then stick to the surface.
Bag filters are used for the deposition of solid aerosols, as long as condensation of water vapor can be excluded.
Related Products
Spray Drying Evaporation
GEA's spray drying evaporation is a simple process that requires limited attention from the operator while maintaining high reliability. It can be easily integrated with either existing or new WFGD.
Heavy metal removal
Environmental pollution of heavy metals is increasingly becoming a problem and global concern. In addition to the calomel process, often used in the field of non-ferrous metal production, GEA uses wet Electrostatic Precipitators (ESP), Spray Drying Absorption (SDA) and Ceramic Catalyst Candles (BisCat) to reduce heavy metals from flue gas.
Bubble column reactor
Bubble Columns feature a high liquid to gas volume ratio, beneficial when conducting rather slow reactions in the liquid phase as large reaction volumes can be realized. Ideal when dry spots must be avoided in the contactor.
Converter gas recovery (LT process)
The conversion of hot metal into steel produces CO-laden gases of high caloric value. The recovery of these gases means to save a considerable amount of energy. The LT-Steel Gas Process has established worldwide.
