PROCESS FOR THE REMOVAL AND RECOVERY OF SULFUR IN ELEMENTARY FORM FROM GASES CONTAINING SULFUR DIOXIDE OR SULFUR DIOXIDE AND SULFUR HYDROGEN

摘要

P THE PROCESS ACCORDING TO THE INVENTION IS CHARACTERIZED IN THAT THE SULFUR DIOXIDE OR THE SULFUR DIOXIDE AND THE SULFIDE HYDROGEN CONTAINED IN THE GASES ARE ABSORBED IN A WASHING SOLUTION CARRYING SULFIDE SUCH AS THE PH OF THE WASHING SOLUTION IS IN THE RANGE OF 2.5 TO 5 OR THE POTENTIAL OF OXYDO-REDUCTION IS IN THE RANGE OF - 70 TO -260 MV IN RELATION TO A CALOMEL ELECTRODE, THE RESULTING PURIFICATION SOLUTION IS DIRECTED IN AN AUTOCLAVE IN WHICH THE COMPOUNDS CONTAINED IN THE SOLUTION ARE TREATED AT A HIGH TEMPERATURE SO THAT THE PRODUCTS ARISING FROM THE PROCESS ARE ELEMENTARY SULFUR AND A SULFATE SOLUTION WHICH IS REGENERATED IN SULFIDE AS KNOWN AND RETURNED 'ABSORPTION STAGE. /P