| 摘要 |
<p>A process for separating SO2 and NOx, especially from combustion gases, in which the first stage is to separate the majority of the SO2 and a small proportion of the NOx from the combustion gas, and the second stage is to separate the majority of the NOx from the combustion gas by catalysis using activated carbon or activated coke with the addition of ammonia, and to separate the residual SO2 by reaction with the ammonia. The active carbon/active coke is fed into a reactor, and the loaded adsorption agent is removed from the reactor and regenerated thermally or by washing. The adsorption agent can also be passed through a sieve and again fed into the reactor, after separation of the ammonium sulphate, for the purpose of reuse. Ammonia can be recovered from the washing water of the active carbon/active coke washing operation as well as from the ammonium sulphate which has been passed through the sieve, after which it can be returned to the separation process.</p> |
