Recovered water- traces of solvent. Packaging and product gravure- use polar solvents or mixtures containing polar solvents. Partially miscible with water. Recovered solvent contains some water and decanted water contains solvent. Good pollution control method when solvent recovery is not feasible.
Incineration burns high- boiling point solvents.
The tail gases can be used to heat dryers or winter time fresh air. Dryers with incinerators can be identical to those with solvent recovery. LEL controls, LEL indicators are essential for keeping the exhaust rates low and safe. Incinerators can operate at much lower temperatures if a catalyst is used to trigger the oxidation of hydrocarbons. Tracking tonnage of purchased, used, recovered and reused.