This report demonstrates how the properties of waste air and the boundary conditions of the task lead to direct, compelling consequences for the concept, the realization, and the operation of a thermal waste air purification unit. The design of the individual functional groups is always a result of the job criteria and possible influences of other functional groups. The better the adaptation of the plant concept to the demands of the task, the more smoothly the finished plant will run. Very high availability and reliable waste gas quality represent the principal environmentally relevant objectives of such thermal waste gas purification plant.