Process for the desulfurization and denitrification of a waste gas containing halogen-containing materials

Abstract

A stable processing of a waste gas containing halogen-containing materials is rendered possible without fear of increase of the pressure loss or clogging of a louver unit near the waste gas inlet in a second moving bed due to accumulation of the halogen components. This can be accomplished by a process for the desulfurization and denitrification of a waste gas containing halogen-containing materials in addition to SO.sub.x and NO.sub.x comprising using a gas-processing apparatus consisting of a first moving bed and a second moving bed in which a carbonaceous adsorbent is moved from the upper part to the lower part, firstly feeding the waste gas to the first moving bed and passing it transversely through a carbonaceous adsorbent where desulfurization is mainly carried out, then adding ammonia to the waste gas having passed through the first moving bed, feeding it to the second moving bed and passing it transversely through the carbonaceous adsorbent where denitrification is mainly carried out, while feeding the carbonaceous adsorbent firstly to the second moving bed where the carbonaceous adsorbent is subjected to denitrification, then feeding the carbonaceous adsorbent to the first moving bed where the carbonaceous adsorbent is subjected to adsorption of sulfur oxides and then subjecting to regeneration, characterized in that a gas permeable partition plate is provided in parallel with the flow of the carbonaceous adsorbent in the second moving bed to divide the bed of the adsorbent into a bed at the inlet side of the waste gas and another bed at the outlet side, the carbonaceous adsorbent having moved downward in the bed at the outlet side of the waste gas is fed to the first moving bed as it is, and the carbonaceous adsorbent having moved downward in the bed at the inlet side of the waste gas, and adsorbed ammonium halides, is taken out of the system and subjected to regeneration.

Dependencies are inferred from the claim text.