Drying system Combi Air Clean The STELA Combi-Air-Clean-System increases the efficiency of dust separation of the whole drier and, at the same time, reduces the power consumption. dedusted drying plants, with this system the exhaust air is split into two airflows. The very moist exhaust airstream from the upper part (1) of the drier column (2) has a very low dust loading and is thus sucked off upwards by means of an axial fan (3). The dust emission values of this exhaust airstream are significantly below the limit values due to a dust separation by a pneumatic flap (4). The airflow in the lower area (5) of the plant, however, has a clearly higher dust loading with a considerably lower moisture degree. The exhaust air is aspirated by a radial fan (6) and pressed into the centro separator (7) for dedusting, before it is again discharged outside as cleaned exhaust air. The total dust emissions can be reduced, compared with plants with conventional dust separation, by up to 30% by using the Combi- Air-Clean System.

Drying system Biturbo-Technology The innovative air duct system of the STELA Biturbo technology reduces the required hot air volume by up to 40 % and thus lowers the specific energy consumption by up to 15 % compared with conventional drying plants with active heat recovery. The fresh air (1) is aspirated in the lower area of the drying plant, heated up by a gas line burner (2) and led into the lower drying section, the product area (4), together with preheated air from the cooling zone (3). The hot air temperature can be adjusted completely independent from the upper tempera- ture zone. The...