Vacuum dryer PCS

batchfor the chemical industryfor plastics

Product Overview
An orbiting (swept‑wall) screw conveys product up the conical jacketed wall while gravity returns material through the centre. This geometry delivers very low specific energy input, total discharge and uniform jacketed heat transfer suitable for large single‑batch processing of fragile or heat‑sensitive materials.

Key Statistics

• Usable Fill Range: ~10 – 100%
• Operating Vacuum: 10 – 200 mbar (absolute)
• Specific Energy Input: Lowest among agitated dryers
• Discharge: Total discharge via apex/bottom valve, no heel

How It Works

• Orbit & Lift — The screw orbits and conveys product up the cone wall, achieving full volume turnover at low speed while continuously sweeping the heated jacketed wall.
• Gravity Return — Material cascades down the centre under gravity; energy per unit mass is minimal, reducing heat generation and particle attrition.
• Cone‑Wall Drying — The full cone is jacketed; the swept wall renews the product layer while vacuum lowers boiling points, enabling uniform drying without hot spots or crusts.

Fit — Where the PCS Series Earns Its Place

• Strengths
  • Gentlest agitated vacuum drying geometry
  • Effective mixing from ~10% to 100% of working volume
  • Total discharge through apex valve — full product recovery
  • Large single‑batch capacity in a compact footprint
  • Low installed power relative to processed volume
• Typical Duties
  • Large‑batch drying of fragile or friable products
  • Solvent removal from high‑value powders
  • Blending and drying of segregating formulations
  • Drying heat‑sensitive botanicals and proteins
  • Post‑reactor powder finishing
• Industries
  • Pharmaceuticals & API manufacturing
  • Fine chemicals
  • Food ingredients
  • Polymer powders

Vacuum Advantage

• One vessel can mix, react or granulate then dry to specification — no intermediate transfer, no product loss, no re‑segregation.
• Solvent recovery: condenser, receiver and cold trap sized to duty; solvents recovered as liquid.
• Oxygen‑free processing: evacuate and back‑fill with nitrogen; ATEX and inert‑loop control options available.
• Validated cycles: drying curve and endpoint established in trials and warranted at FAT; product temperature control with full batch data logging.

Additional Notes
Conical screw mixers are also offered in atmospheric (non‑vacuum) versions using the same engineered geometry and jacket options. Pilot trials and engineering datasheets are used to size models for working volume, heated area and installed power to match material duty.

FAQ

• What is a conical screw vacuum dryer? — A jacketed, cone‑shaped vessel with an orbiting screw agitator, operated under vacuum to dry and blend large batches with minimal mechanical stress and full bottom discharge.
• Why is it so gentle? — Low screw speed and gravity return keep specific energy input per kg very low, minimizing heat generation and particle damage.
• What batch size flexibility does it offer? — Geometry mixes effectively from roughly 10% to 100% of working volume, enabling the same vessel to cover development and production batches.

Technical Specifications

• Model series: PCS Series
• Vessel geometry: Jacketed conical vessel
• Agitator: Orbiting (swept‑wall) screw
• Usable fill range: ~10 – 100%
• Operating vacuum: 10 – 200 mbar (absolute)
• Discharge: Total discharge via apex/bottom valve, no heel
• Specific energy input: Very low (minimal heat generation and attrition)
• Construction features: ASME jackets, vacuum‑rated bodies
• Solvent handling: Closed‑loop solvent recovery with condenser/receiver/cold trap sized to duty
• Oxygen control: Nitrogen back‑fill for oxygen‑free processing; ATEX/inert‑loop options
• Validation & data: Product temperature control with full batch data logging; validated cycles and FAT warranty
• Typical duties: Large‑batch drying, solvent removal, blending of segregating formulations, drying of heat‑sensitive botanicals/proteins, post‑reactor finishing
• Footprint: Large single‑batch capacity in a compact footprint; low installed power for the volume