Wellman-Lord
Wellman-Lord : The most widely used regenerable flue-gas desulfurization process. The sulfur dioxide is absorbed in sodium sulfite solution in a wet spray scrubber, forming sodium bisulfite: Na2SO3 + H2O + SO2 + 2NaHSO3. The solution is regenerated by heat to provide a sulfur-rich gas which can be used to make elemental sulfur, sulfuric acid, or sulfur dioxide. A small amount of sodium sulfate is produced, which must be crystallized out and disposed of. Initially the process used the potassium salts. (Check source for accuracy of chemical formula)
No records Found