| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for treating a gas with activated carbon, in which the amount of steam to be supplied can be reduced and the optimum time to exchange an adsorbing material can be recognized. <P>SOLUTION: An apparatus 10 for treating the gas is provided with two adsorption columns 12a, 12b packed with activated carbon 14a, 14b. Exhaust gas is introduced into one of the columns 12a, 12b. Withdrawing ducts 42x, 42y are connected to the upper part and the middle part of each of the columns 12a, 12b, respectively. Another withdrawing duct 42z is connected to a guide duct 22. Sensor parts 44x-44z are arranged on the ducts 42x-42z respectively so that the concentration of a harmful component of the gas flowing in each of the ducts 42x-42z is measured. When the value measured by the part 44y reaches the prescribed value, the column into which the exhaust gas is introduced is switched between the columns 12a and 12b. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
