Continuous recycling of degreasing solvents with optional azeotropic distillation.
Distilling chlorinated solvents at atmospheric pressure can result in a waste residue of oils and greases containing between 20 and 50% of solvent! Using vacuum distillation this can be lowered to between
5 and 8%. However, the best solution is achieved by combining vacuum distillation with azeotropic distillation.
How azeotropic distillation works: The process consists of a "soft" vacuum distillation for about 70-80% of the polluted solvent. Later, the concentrated residues in the boiler are treated by a flow of steam that strips the residue part of the solvent still present at a temperature at least 20% lower than the critical point at which acidification of the solvent can occur. This results in a yield of distilled solvent > 99.7%
Solvent contained in the waste residue is only: 0.1 - 0.3%
Solvent continually fed back to degreasing unit.
The SM series machines can be supplied without the steam unit allowing many other degreasing solvents to be treated such as methylene chloride.
Model SM30 with 30 litre load capacity. Fully automatic
Model SM60 with 60 litre load capacity. Fully automatic
Model SM120 with 120 litre load capacity. Fully automatic
30 litre load 60 litre load 120 litre load
Fully automatic continuous batch loading