This process removes SO by spraying dry alkali (natural alkali, baking soda, etc.) into the high-temperature SO3-containing flue gas to convert SO3 into stable sulfate, which is absorbed by the spray system. It is mostly used to control the blue smoke caused by sulfuric acid aerosol from SO in wet desulfurization system.
Technical Advantages
- It is simple and easy to reconstruct;
- It is designed to prevent dry alkali adhesion during storage and transportation, which makes the alkali efficient and stable;
- It can run or stop according to the SO content in flue gas;
- It does not produce secondary pollutants;
- It has no effect on wet desulfurization system.
