A method of treating exhaust gas and an apparatus therefor

摘要

There is disclosed a method of treating an exhaust gas comprising absorbing and/or neutralizing, in a packed tower (5), hydrogen chloride in high temperature exhaust gas which is exhausted from an apparatus for producing synthetic quartz according to a flame hydrolysis method (1) and apparatus therefor characterized in that a temperature of the exhaust gas is lowered by bringing the gas into contact with cooling medium, especially water or a treatment solution for hydrogen chloride before the exhaust gas is passed through a packed bed in the packed tower. In a method of producing a synthetic quartz according to a flame hydrolysis method, when hydrogen chloride in the high temperature exhaust gas exhausted from the apparatus for producing the synthetic quartz is absorbed and neutralized in a packed tower, a packing material in the packed tower made of inexpensive synthetic polymer such as polypropylene or polyethylene can be used, and safe operation can be performed.