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During the percolation process, the tower is packed with bauxite, then when saturated, cleaned with naphtha, then unpacked and the bauxite burned in a rotary oven at 550 Centigrades. Then the bauxite is re-activated with sulphuric acid and the tower packed again. Is this correct procedure?
 
Answers
02/07/2010 A: RAUL FLORES, PDVSA INTEVEP, fraulf@hotmail.com
Do you mean percolation to produce paraffinic wax/cut/refined stream? Sulphuric acid to re-activate? I have only seen a fresh bauxite make-up in order to balance the inventory replacing the bauxite lost by fines.