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the purification process of oil fractions or petrochemical plants treated with sulfuric acid and / or fuming sulphuric acid and / or sulphur trioxide and recovery of sulfur compoundsfree of inorganic salts
the purification process of oil fractions or petrochemical plants treated with sulfuric acid and / or fuming sulphuric acid and / or sulphur trioxide and recovery of sulfur compoundsfree of inorganic salts