Lucas Lurgi-Claus-Abgas-Schwefelgewinnung


Lucas Lurgi-Claus-Abgas-Schwefelgewinnung :

A process for removing residual sulfur compounds from the tail gases from the Claus process.The gases are incinerated and then passed over a bed of hot coke, which converts allthe sulfur to sulfur dioxide.This is absorbed in aqueous sodium phosphate,which releases it on heating: Na2HPO4 + H2O + SO2← NaH2PO4 + NaHSO3. The sulfur dioxide is returned to the Claus process for re-use. (Check source for accuracy of chemical formula)

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