Comparison of material flows in sewage-free and sewage-generating flue-gas purification systems of municipal waste incineration plants
During incineration of waste in waste incineration plants, polluted flue gases are generated which have to be subjected to flue gas purification. Although the legal requirements are nearly unambiguous, the question of whether wet flue gas purification is to be performed in a sewage-free or sewage-generating manner is discussed controversially by experts in the Federal Republic of Germany. As a contribution to this discussion, material flow studies of sewage-free and sewage-generating flue gas purification processes in waste incineration plants were performed by ITAS in cooperation with ITC-TAB. The study covered three waste incineration plants, two of which were operated in a sewage-generating and one in a sewage-free manner. The data and information submitted by most of the plant operators are not sufficient for a comprehensive balancing of flue gas purification systems in waste incineration plants. For this reason, plant operation often is not optimally tailored to the substances prevailing. During operation, at least temporary strong superstoichiometric dosage of auxiliary chemicals cannot be excluded. By means of plausibility assumptions and model calculations, closed balancing of most plants could be achieved. Moreover, it was demonstrated by the balancing of technical-scale waste incineration plants that the material flows in wet flue gas purification re less dependent on the design of the flue gas purification section (sewage-free/sewage-generating), but considerably affected by the operation of the flue gas purification system (e.g., volume of absorption agents used). Hence, material flows can be controlled in a certain range.
- Research Organization:
- Forschungszentrum Karlsruhe (DE)
- OSTI ID:
- 20017391
- Resource Relation:
- Conference: 6th Annual Waste-to-Energy Conference, Miami Beach, FL (US), 05/11/1998--05/13/1998; Other Information: PBD: 1998; Related Information: In: 6th annual waste-to-energy conference, 328 pages.
- Country of Publication:
- United States
- Language:
- English
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