Tinker Air Force Base - Oklahoma City, OK
The Solvent Recycling System is used to distill solvent for reuse. The system allows the paint shop to use the solvent several times before final disposal. The solvent, acetone, is used to clean the paint spray guns. In the past, the solvent was used until its cleaning ability was diminished. At that point, it was transferred to a barrel for disposal.
One Solvent Recycling System is currently in operation. The system boils the solvent (acetone) under vacuum. The solvent vapor is then condensed resulting in a pure solvent that is suitable for reuse in the cleaning operation. The paint solids and sludge are then disposed of in barrels.
New solvent is added to maintain the solvent level. When the solvent is no longer adequately cleaned, the entire solvent bath is replaced.
The Solvent Recycling System allows the solvent to be reused for over one month. Before implementation, the solvent was replaced on a weekly basis. This system allows the Paint Shop to use less chemicals and dispose of less hazardous waste.