The invention is concerned with a device of destroying ozone in gases by
employing a recuperative plate heat exchanger (1) and an integrated
electrical heating element (19, 21). The recuperative plate heat
exchanger (1) is equipped with at least two planes, a preheating plane
(11) and a recooling plane (13), whereby the flow direction of the gas
treated in the recooling plane (13) is reversed relative to the
ozone-containing gas in the preheating plane (11). Preferably, the flow
directions of the preheating plane (11) and the recooling plane (13)
cross over. The electrical heating element (19, 21) is situated in a
reaction chamber (3) and heats up the ozone-containing gas preheated in
the heat-exchanger up to temperatures of 350.degree. C. or more, and thus
destroys the ozone within the gas almost to completion. The plate heat
exchanger (1) works almost without pressure losses.