Method of refining tall oil

Claim 1

THE METHOD OF REFINING TALL OIL WHICH COMPRISES; REMELTING THE SOAP SKIMMINGS OBTAINED IN BLACK LIQUOR RECOVERY; ADDING A GRAINING AGENT AND SETTLING OUT THE WASTE LYE; REMELTING THE SOAP THUS OBTAINED AND ACIDIFYIN THE SAME WITH A MINERAL ACID SELECTED FROM THE GROUP CONSISTING OF SULPHURIC AND SULPHUROUS ACID; SEPARATING THE DARK COLORED AQUEOUS PRODUCT; DILUTING THE MIXED FATTY AND ROSIN ACIDS THUS OBTAINED WITH A VOLATILE SOLVENT AND COMMINGLING SAME WITH AN ACTIVATED SILICA PRODUCED AT A LATER STEP IN THE PROCESS; SEPARATING SAID SILICA; COMMINGLING THE RESULTANT LIQUID PRODUCT WITH AN ACTIVATED CLAY PRODUCED AT A LATER STEP IN THE PROCESS; PREPARING SAID ACTIVATED CLAY BY COMMINGLING DILUTED SULPHURIC ACID AND CLAY UNTIL APPROXIMATELY ONE-THIRD OF THE ALUMINA RESIDENT IN SAID CLAY HAS BEEN CONVERTED TO ALUMINUM SULPHATE; SEPARATING AND RESERVING THE ACID MENSTRUUM THUS PRODUCED FROM THE ACTIVATED CLAY; DRYING SAID CALY AND COMMINGLING IT WITH THE MIXED FATTY AND ROSIN ACIDS AS PREVIOUSLY PRESCRIBED; SEPARATING SAID ACTIVATED CLAY AS A SPENT CLAY FROM THE NOW SUBSTANTIALLY DECOLORIZED MIXED FATTY AND ROSIN ACIDS; COMMINGLING SAID SPENT CLAY WITH THE ACID MENSTRUUM PREVIOUSLY RESERVED FOR THIS PURPOSE UNTIL SUBSTANTIALLY ALL THE ACID

Claim 2

THE METHOD OF REFINING TALL OIL WHICH COMPRISES; REMELTING THE SOAP SKIMMINGS OBTAINED IN BLACK LIQUOR RECOVERY; ADDING A GRAINING AGENT AND SETTLING OUT THE WASTE LYE; REMELTING THE SOAP THUS OBTAINED AND ACIDIFYIN THE SAME WITH A MINERAL ACID SELECTED FROM THE GROUP CONSISTING OF SULPHURIC AND SULPHUROUS ACID; SEPARATING THE DARK COLORED AQUEOUS PRODUCT; DILUTING THE MIXED FATTY AND ROSIN ACIDS THUS OBTAINED WITH A VOLATILE SOLVENT AND COMMINGLING SAME WITH AN ACTIVATED SILICA PRODUCED AT A LATER STEP IN THE PROCESS; SEPARATING SAID SILICA; COMMINGLING THE RESULTANT LIQUID PRODUCT WITH AN ACTIVATED CLAY PRODUCED AT A LATER STEP IN THE PROCESS; PREPARING SAID ACTIVATED CLAY BY COMMINGLING DILUTED SULPHURIC ACID AND CLAY UNTIL APPROXIMATELY ONE-THIRD OF THE ALUMINA RESIDENT IN SAID CLAY HAS BEEN CONVERTED TO ALUMINUM SULPHATE; SEPARATING AND RESERVING THE ACID MENSTRUUM THUS PRODUCED FROM THE ACTIVATED CLAY; DRYING SAID CALY AND COMMINGLING IT WITH THE MIXED FATTY AND ROSIN ACIDS AS PREVIOUSLY PRESCRIBED; SEPARATING SAID ACTIVATED CLAY AS A SPENT CLAY FROM THE NOW SUBSTANTIALLY DECOLORIZED MIXED FATTY AND ROSIN ACIDS; COMMINGLING SAID SPENT CLAY WITH THE ACID MENSTRUUM PREVIOUSLY RESERVED FOR THIS PURPOSE UNTIL SUBSTANTIALLY ALL THE ACID