Air
The didactic focus of the air subject area is the various methods for treating gaseous media (air pollution control). Most contaminants can be removed from an exhaust airflow by mechanical or thermal processes.
The aim of mechanical processes is separation of particles from an exhaust gas flow (dust extraction). The separation of particulate matter in particular is of great importance.
Solid separation from gases using a cyclone
Learning objectives/experiments
- influence of solid content and volumetric air flow rate on
- pressure loss at the cyclone
- separation efficiency
- separation function and separation size (with suitable analysis device)
- comparison of pressure loss and separation efficiency with theoretically calculated values
Thermal processes are used to remove gaseous contaminants. The exhaust gas should largely be free of dust, which means mechanical cleaning needs to take place initially.
Separating a carbon dioxide/air mixture by absorption in counterflow
Learning objectives/experiments
- investigation of the absorption process when separating gas mixtures in a packed column
- determination of pressure losses in the column
- representation of the absorption process in an operating diagram
- investigation of the variables influencing the effectiveness of absorption
Basic principle of adsorption and desorption
Learning objectives/experiments
- fundamental principle of adsorption and desorption
- investigation of the variables influencing adsorption and desorption
- air flow rates
- air humidity and temperature
- bed height of adsorbent
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