| Abstract: | Comparison of process concepts for flue-gas clean-up in residue incineration. Depending on the residues being dealt with, industrial residue incinerators may produce flue gases having widely varying separation properties. This applies especially to particulate constituents. To determine unknown separation properties, to select suitable separation methods, and to predict the separating behaviour of the envisaged equipment, use can be made of pilot plants or very small test plants. Experiments have been carried out on two residue incinerators of different size using rotary-kiln technology in order to ascertain the suitability of various processes for separating particles from flue gases. For wet treatment a venturi scrubber and a scrubbing column were investigated, and for dry treatment the methods of electrostatic precipitation and cloth filtration. Various alternatives for dust separation have been derived from, and assessed on the basis of, the experimental results. Discussion of the experimental results shows that reliable prediction of the operating behaviour of industrial-scale units will require further basic investigations regarding dust separation and gas scrubbing. The task of enabling cleaned-gas values to be reliably predicted is beyond the development potential of individual manufacturers, individual operators, and individual university institutes. What is essential is the development of a joint concept under which the various tasks will be distributed and coordinated. |
