焚化過程中氯化氫及含氯有機污染物之探討

• Main Author: 巫慧瑜
• Other Authors: 魏銘彥
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/83760444517790473953

碩士 === 國立中興大學 === 環境工程學系 === 92 === This study employs a laboratory-scale fluidized bed incinerator to investigate the control of hydrogen chloride (HCl) and organic chlorides during waste incineration by adding different additives in the feedstock which contains organic and inorganic chlorides, respectively. The control efficiency of different additives and the effects of different types of chlorides are studied and compared by experiments and thermodynamic equilibrium modeling. The influences of organic and inorganic chlorides on the formation of air pollutants show that the formation of HCl is related to the potential of chlorine released from different chlorides. Organic chloride PVC is more potential to form HCl than inorganic chloride NaCl. The performances of additives are affected by incineration temperature. Increasing operating temperature decreases the control efficiency of additives, because the emission rates of HCl and Cl2 are increased with temperature. Comparing the control efficiency of HCl and Cl2 by different additives finds that calcium base additives (Ca(OH)2, CaO, CaCO3) have better performances than magnesium base additive (Mg(OH)2). CaO is found to be the best additive to control HCl and Cl2. The control efficiencies of different organic compounds, such as PAHs, chlorobenzenes, chlorophenols, and dioxins, by the additives are also investigated. Experimental results indicate that the additives can effectively suppress the formations of the chlorobenzenes, but the control efficiencies of PAHs and chlorophenols are not apparent. The control efficiency of dioxins is obvious only in the case of organic chloride. In addition, adding copper compounds in the feedstock can catalyze the formation of chlorophenols in some cases, but does not for the chlorophenols.