摘要:
A method for purifying a spent acid catalyst from an acid catalyzed chemical reaction that generates a mixture of a product, spent add and tar, includes the steps of separating the mixture of product, spent acid, and tar into a product fraction and a spent acid fraction, said spent acid fraction comprising a mixture of spent acid and tar, and separating the spent acid fraction, by flotation separation, centrifugation, or liquid-liquid coalescence, into a tar fraction and a de-tarred spent acid fraction. The fluidized tar and the de-tarred spent acid can each be further processed to produce concentrated acid.
摘要:
METHODS OF SEPARATING THE BY-PRODUCT SULFURIC ACID FROM THE REACTION MIXTURE RESULTING FROM PHOTO-SULFOXIDATION OF PARAFFINS IN WHICH THE CONCENTRATION OF THE SULFURIC ACID IS FROM 30 TO 95% BY WEIGHT, WHICH COMPRISE THE STEP OF NEUTRALIZING SAID REACTION MIXTURE WITH CAUSTIC ALKALI OR CONTACT THE REACTION MIXTURE WITH UNDILUTED SULFURIC ACID, THEREBY SETTLING THE BY-PRODUCT SULFURIC ACID WITHIN THE REACTION MIXTURE.
摘要:
A SYSTEM FOR REDUCING THE CORROSION RATE ON METALS IN A SPENT SULFURIC ACID SLUDGE ECOVERY POCESS. THIS SYSTEM COMPRISES THE ADDITION OF A CORROSION INHIBITOR TO SPENT SULFURIC ACID SLUDGES, AS IT IS PUMPED FROM A STORAGE MEDIUM THROUGH A HEAT EXCHANGER TO MAINTAIN THESE SLUDGES AT A CONSTANT TEMPERATURE. THE CORROSION INHIBITORS CONSIST OF WATER OR WATER IN THE FORM OF DILUTE FRESH SULFURIC ACID.