| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress re-synthesis of remaining organic contaminants such as dioxins in an exhaust gas in a cement manufacturing device and to clean the exhaust gas. <P>SOLUTION: The method for treating the exhaust gas in the cement manufacturing device is for treating the exhaust gas generated in the cement manufacturing device provided with a dryer 1, a pulverizer 2, a preheater 3 and a rotary kiln 5. The method includes a process (A) of generating an exhaust gas containing hydrogen chloride in a cement manufacturing process using a cement raw material containing chlorine, and a process (B) of generating calcium chloride which is a neutralization product of a calcium compound and hydrogen chloride in the exhaust gas by charging at least one calcium compound selected from CaO and Ca(OH)<SB>2</SB>at the position of the upstream side of the exhaust gas of the dryer 1 or the pulverizer 2 to the exhaust gas containing hydrogen chloride generated in the process (A). <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
