... , decoloration tower, de-solvent tower, deodorization tower, vacuum pump, filter and heat conduction oil furnace etc.Flow Chartde-mixed, ... ; 7. Vacuum pump: Provides vacuum for bleaching, deodorization which can reach 755mmHg or more; 8. Press filter: Filter clay, filter out clear ... the press filter; 10. Dedusting system to prevent gas and dust from coal burning; 11. Additional horizontal grid plate ...