The paper presents a general analysis of the suitability of individual elements of the flue-gas treatment system used in SGL Carbon SA in Nowy Sacz (Poland) for the graphitization process carried out in new LWG furnaces (Castner type). The flue-gas treatment system consisted of two installations: catalytic afterburning and flue-gas desulfurization. The analysis of the suitability of various methods of flue-gas treatment was based primarily on the assessment of the effects of their application, including the reduction of concentrations of selected components in post-graphitizing gases. The work also summarizes the results of evaluation of the functioning of the whole flue-gas treatment system. This assessment was based on studies of the total effectiveness of air pollutant reduction in the analyzed system. Unfortunately, the results of this assessment depended not only on the efficiency of individual elements of the treatment system, but also on the specific flue-gas evacuation system that allowed part of the gases to bypass some treatment devices.

English title: Assessment of the operation of the installation for flue-gas treatment in the process of graphitization of carbon electrodes in SGL Carbon SA in Nowy Sacz.