| 摘要 |
A method and apparatus for recovering sensible heat from a hot exhaust gas having an oxygen concentration of less than 21 vol% in a fuel-air fired combustion device. An oxidant stream comprising a gas having an oxygen concentration of greater than 21 vol% is introduced into the combustion process to form an oxidant mixture comprising the hot exhaust gas, the oxidant and any air present, the mixture having an average combined oxygen concentration of less than 21 vol%. |
