| abstract |
Method of separating substances, notably SO 2 and NO x where x is 1 or 2, from cooled flue gases, such as combustion exhaust gases containing low levels of impurities of the same. The gases are contacted with at least one substantially dry particulate absorbent including NaHCO 3 which, at a release temperature below 400° C., decomposes to form an activated absorbent including Na 2 CO 3 which serves to remove the harmful substances from the flowing gas. |