| 摘要 |
<p>This invention relates to a method of purifying gases which are polluted by hydrocarbons and the like in an apparatus comprising two reactors, each reactor comprising a catalyst bed and a ceramic bed. According to the invention the method is characterized by the combination of the following moments: the gas that shall be purified is forced to stream alternately through a passage comprising the first reactor (1) and the second reactor (2) (clockwise streaming) and the second reactor (2) and the first reactor (1), respectively (counterclockwise streaming), the purification of the gas is made by the fact that the hydrocarbons in the gas are oxidized to carbon dioxide and water in the catalysts (5, 6); the temperature of the gas streaming through the reactors (1, 2) is measured and when the temperature exceeds a certain level, a portion of the gas is taken out from the apparatus during the passage of the catalyst bed (5) of the second reactor (2) if the gas streams in a clockwise direction, whereas a portion of the gas is taken out from the apparatus during the passage of the catalyst bed (4) of the first reactor (1), if the gas streams in a counterclockwise direction. The invention also relates to an apparatus which is useable for carrying out the method.</p> |
