Method for treatment of refinery high-SO2-concentration and low-oxygen-content flue gas

The present invention discloses a high SO2 concentration refinery flue gas treatment method hypoxia, hypoxia high flue gas SO2 concentration is first deoxygenated flue gas into the system after the deoxidation treatment apparatus sulfur; wherein deoxidation treatment by the following method: Flue contact with lye, the reaction with SO2 in the flue gas section lye, lye is reacted with SO2 in the flue gas and product oxygen is further reacted to remove the oxygen in the flue gas. The method of the present invention by a suitable pretreatment to remove oxygen in the flue gas, reducing the impact on the subsequent process of sulfur produced, so that a high utility value of flue gas SO2 concentration increases, avoiding the conventional desulfurization low value byproduct obtained The problem. The method of the present invention does not deoxidizer other, the process is simple, easy to operate, deoxidation effect to meet the requirements of the subsequent process, the economy is good.