VACUUM DRYERS AND SYSTEMS

Paul O. Abbé offers wide ranges of tumble vacuum dryers, rotary vacuum dryers, and ribbon vacuum dryers—all with a variety of useful options. This broad product line combined with our ability to custom engineer complete functional systems are why so many companies have come to depend on Paul O. Abbé for nearly a century.

A vacuum dryer is typically used for separating a volatile liquid by vaporization from a powder, cake, slurry, or other moist material. This process is fundamentally thermal and doesn't involve mechanically separating the liquid from the material, such as in filtration or centrifugation.

Unlike a direct-heat dryer, in which the material is immersed directly into the heating media (usually a hot gas stream) and is dried by convection, a vacuum dryer is an indirect-heat dryer. That is, the heat is transferred to the material as it contacts the dryer's heated surface, drying the material by conduction. Understanding this distinction is essential for grasping the advantages and limitations of vacuum drying, as well as for selecting a vacuum dryer that efficiently and economically achieves your process goals.

Vacuum drying is especially effective for heat sensitive materials and allows for closed system benefits where solvant recovery is required. Paul O. Abbé has custom-designed vacuum drying solutions for more than 50 years…to the same exacting quality as our “Standard” units. Complete systems can be produced with a variety of options tailored to your process.

	Rota-Cone Vacuum Dryers The most popular configuration for gentle and thorough drying of free-flowing solids, the Rota-Cone provides a gentle folding action that is effective in bringing materials into contact with the heated vessel walls – offers easy cleaning and is available with both sanitary and heavy-duty construction.
	Vacuum Drying Systems Complete systems with heat, vacuum, vapor condensation & recovery, integrated electronic controls for all functions – for R&D or full-scale large batch production requirements. Heat Systems and Vacuum & Solvent Recovery Systems available separately as well.
	Solid State Polymerization The Rota-Cone Vacuum Dryer/Reactor is ideal for high temperature, deep vacuum applications. Often utilized to engineer the transition of polymers from amorphous to crystalline states.