| 摘要 |
<p>PURPOSE:To provide an inexpensive adsorbent regeneration method at relatively low temperatures by burning a lower hydrocarbon gas on the adsorbent deteriorated by adsorbing harmful gas through which the hydrocarbon gas is passed. CONSTITUTION:Metal oxide or sulfate of a metal selected from Pt, Pd, Mn, etc., is added to alumina, silica, etc., and the mixture is admixed and molded to prepare an adsorbent. The adsorbent 3 which is deteriorated by adsorbing a harmful gas including nitrogen oxides and sulfur oxides is packed in a tubular reactor 1. A gas containing hydrocarbons of the carbon number of 2-4 including ethylene and propylene is passed though the adsorbent 3 and burned on it. The hydrocarbon gas is ignited at the combustion active points of the adsorbent so that the active point temperature is immediately increased to desorb the harmful gas. The adsorbent is thereby regenerated at relatively low temperatures inexpensively.</p> |
