Specific emission control processes
A suspension of fine solid particles or liquid droplets, in gas is called aerosol and can be separated by different working principles.
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.
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.
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.
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 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.
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.
What if your favorite chocolate didn’t require cocoa beans and your coffee was locally produced? As climate disruption, price hikes and ethical concerns hit two of our most beloved indulgences, scientists are reimagining how we produce them – using microbes, not monocultures. The goal: preserve the flavor and properties of coffee and chocolate while minimizing carbon emissions and improving food resilience.
Ports now compete not just on logistics, but on sustainability. At Greece’s Piraeus port, an advanced processing and recovery facility recycles ship waste oil into fuel. Equipped with GEA’s high-performance centrifuges, it sets a new benchmark for state-of-the-art, environmentally responsible port operations.
The 2022 CO2 shortage forced breweries to review their dependency on global supply chains. Many were forced to close, unable to carbonate their products. At its breweries in Germany, OeTTINGER GETRÄNKE is turning its own CO2 into a powerful lever for independence and sustainability – with the help of CO2 recovery technology from GEA.