Name the substance used to remove sulfur dioxide in flue gas desulfurisation
Question
Name the substance used to remove sulfur dioxide in flue gas desulfurisation
Solution
The substance used to remove sulfur dioxide in flue gas desulfurisation is Limestone (Calcium carbonate). Here are the steps:
- The flue gas is passed through a spray of limestone slurry in a tower.
- The sulfur dioxide in the flue gas reacts with the limestone to form calcium sulfite.
- The calcium sulfite is then oxidized to form gypsum (calcium sulfate), which can be removed from the system.
- The cleaned flue gas is then released into the atmosphere.
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