Ozone is very heat-sensitive. It can be destroyed very fast at high temperatures. The outgoing energy is used to heat up the ingoing gas. Due to an innovative insulator, the energy consumption is almost reduced to zero. The feed gas can contain organics as well as acids. Rinsing of tanks is allowed, the system is suitable for clean processes. No metals and particles are emitted by the system. The destroyer is maintenance-free and made for a long operation life.