Temperature swing adsorption
The temperature swing adsorption ( TSA - Temperature Swing Adsorption ) is a physical process for the separation of gas mixtures using thermal energy by means of adsorption . It is mainly used for exhaust gas cleaning.
Procedure
The temperature change adsorption makes use of the temperature dependence of the adsorption. The adsorbent is loaded with the component to be separated and largely freed from this component in a subsequent step by introducing thermal energy. For the continuous operation of a temperature swing adsorption system, at least two adsorbers are necessary; one that is loaded and another that is desorbed . Steam or hot nitrogen are generally used as heating means for desorption.
In contrast to pressure swing adsorption , temperature swing adsorption requires thermal energy , which is less expensive than mechanical energy. It can also be used for material systems with high adsorption enthalpies. The cycle times are usually several hours.
Temperature swing adsorption is preferably used to remove low-concentration components with high adsorption enthalpies, as is often the case with exhaust gas cleaning.
literature
- VDI 3674: 2013-04 Exhaust gas cleaning through adsorption; Process gas and waste gas cleaning (Waste gas cleaning by adsorption; Process gas and waste gas cleaning). Beuth Verlag, Berlin. ( Summary and table of contents online ).
Individual evidence
- ↑ Jürgen Klein: Regeneration of adsorbents. In: Dust - cleanliness. Air . 36, No. 7, 1976, ISSN 0949-8036 , pp. 292-297.