An alternative to solvent replacement, as a mechanism to reduce cost and reduce waste generation, is in–process solvent capture. The utilization of equipment to facilitate in–process recovery of solvents is economically preferable to raw materials substitution.
Industries such as chemical, pharmaceutical, metal powders, flavor and fragrance, and PET solid-state manufacturing use solvent recovery vacuum systems.
Solvent recycling vacuum systems are often used in conjunction with the following equipment:
- Vacuum Dryers
- Batch Reactors
- Filter / Dryers
The complexity associated with utilizing a solvent-sealed vacuum system is the calculation of the size of the liquid ring vacuum pump. Liquid ring vacuum pumps sealed with a solvent other than water required advanced sizing calculations that most organizations are unable to perform. Wintek utilizes proprietary internally developed liquid ring vacuum pump sizing software to size and design vacuum systems.
Moreover, Wintek has experience helping customer capture the following solvents, among others:
- Isopropyl alcohol (IPA)
- Mineral spirits
Summarizing, in a solvent recycling scenario, Wintek generally utilizes solvent-sealed liquid ring vacuum pumps sealed with one of solvents in incoming process stream to maximize recovery and reduce potential contamination/environmental concerns.