Purifying waste gases produced in small combustion devices comprises sucking waste gas through filter bed consisting of charge of granules containing adsorbent and neutralizing agent

摘要

Purifying waste gases produced in small combustion devices comprises sucking the waste gas through a filter bed consisting of a charge of granules containing adsorbent and neutralizing agent which moves across the flow direction and is circulated on an endless path. Part of the granules coming from the filter bed is released as waste and is replaced by unconsumed granules. An Independent claim is also included for a device for purifying waste gases produced in small combustion devices comprising an annular stream reactor (12) arranged in the flow path of the waste gas between the combustion device (1) and a ventilator (11). The reactor has an annular chamber (17) filled with a charge of granules containing adsorbent and neutralizing agent. The lower outlet (20) of the annular chamber is connected with its upper inlet (23) by a granule return device. Preferred Features: The granules coming from the filter bed are sieved. The injection of fresh granules is gravimetrically controller. The adsorbent is a C-adsorbent. The neutralizing agent is a material containing lime.