전산유체역학기법을 이용한 시멘트 제조공정 악취물질의 지역확산 연구

초록

Cement production processes release various odor elements including acetaldehyde, hydrogen sulfide, formaldehydeand toluene etc. A three-dimensional numerical simulation using a commercial code of Computational Fluid Dynamics(CFD) was used to estimate the concentration profiles and dispersion distance around the local residential area. The calcination furnace, one of the main emission sources in the cement manufacturing process, discharged theodorous gases of H2S, HCHO, CH3CHO and C6H5CH3 at levels of up to 3.15 ppb, 5.1 ppm, 6.65 ppm and 0.74ppm of H2S, HCHO, CH3CHO and C6H5CH3 respectively. This study found that as for the emission concentrationof 1ppm for H2S and CH3CHO, the landing distance of the threshold value for each gas was extended in summerseasons at a low velocity. Low temperature of the flue gas at a high velocity also led to long dispersion.

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