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Tray & Vacuum Combination Dryer 

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Introduction

Kerone’s Tray & Vacuum Combination Dryer is a batch drying system built around a sealed chamber with heated shelves that can run under vacuum, with hot-air circulation, or in a staged sequence of both. Product is spread on trays that rest directly on hollow shelves heated by hot water, steam or thermal oil, so heat reaches the material by conduction. When vacuum is applied, the boiling point of moisture or solvent drops, allowing drying at gentle temperatures while vapours are drawn off to a condenser. Because the product stays static on the tray, there is no tumbling, no attrition and no dust generation, which makes the dryer ideal for fragile crystals, sticky pastes, hygroscopic powders and expensive intermediates. The combination design gives you flexibility: use circulating warm air for fast bulk moisture removal where appropriate, then switch to vacuum for the final, low-temperature polishing stage. It is a dependable, easy-to-validate solution for pharmaceutical, fine chemical, food-ingredient and laboratory production.

Why Choose Kerone Tray & Vacuum Combination Dryer

Batch dryers are used for high-value materials, so uniformity, containment and traceability matter more than raw throughput. Kerone designs the heated shelves for even surface temperature, using optimised internal flow paths that prevent cold spots and give consistent drying across every tray. Chambers are fabricated in stainless steel such as SS 304 or SS 316L with polished interiors, and door seals are selected for vacuum integrity and chemical compatibility. Vacuum pump choice, whether liquid-ring, dry screw or rotary-vane, is matched to the solvent load, with condensers sized to recover solvents safely for reuse or disposal. Controls manage shelf temperature, chamber pressure and drying time, with alarms for out-of-range conditions and optional data logging for quality records. Because the system is simple to operate and gentle on the product, it offers high yield, stable quality and minimal cross-contamination between batches. Kerone also provides advice on tray loading, fill depth and cleaning procedures to help you achieve reproducible results.

Types and Features of Tray & Vacuum Combination Dryer

Kerone supplies Tray & Vacuum Combination Dryers as laboratory cabinets, pilot units and large production chambers with trolley-loaded racks. The shelf-heated vacuum version uses hollow platens connected to a hot-water, steam or thermal-oil circulation system and is the standard choice for solvent-wet APIs and heat-sensitive chemicals. The hot-air combination version adds a recirculation fan, heater, filters and dampers, so the same chamber can dry by convection before vacuum is applied. Rectangular and cylindrical chamber shapes are available, with single or multiple doors, pass-through designs for cleanroom segregation, and explosion-resistant or inert-gas purging provisions for flammable solvents. Features include vacuum-tight door gaskets, shelf-temperature uniformity control, nitrogen bleed for solvent removal, solvent condensers and receivers, pressure transmitters, bag-in/bag-out filters and PLC or touch-screen control.

Key Features

  • Dual operating modes: Dry under vacuum, with hot-air circulation, or in sequence to match the moisture and heat sensitivity of the product.
  • Conductive shelf heating: Hollow shelves heated by water, steam or thermal oil provide gentle, uniform heat directly to trays.
  • Static, attrition-free drying: Material remains undisturbed, protecting crystal shape, particle size and fragile structures.
  • Low-temperature solvent removal: Reduced pressure lowers the boiling point, allowing safe removal of water and many solvents from sensitive products.
  • Solvent recovery option: Condensers and receivers capture vapours for recovery, reuse or controlled disposal.
  • Hygienic stainless-steel build: Polished SS 304 or SS 316L chambers and trays are easy to clean and suitable for regulated industries.
  • Reliable vacuum sealing: Engineered door gaskets and leak-tight fabrication maintain stable vacuum levels throughout the cycle.
  • Configurable control: Temperature, pressure and time recipes can be stored, monitored and logged for repeatable batches.

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Applications of Tray & Vacuum Combination Dryer

Kerone’s Tray & Vacuum Combination Dryers are extensively used in industries that handle small to medium batches of sensitive, valuable or solvent-wet materials. Typical applications include:
    • Drying active pharmaceutical ingredients, intermediates and solvent-wet filter cakes.
    • Processing herbal and botanical extracts, pastes and thick concentrates.
    • Drying dyes, pigments and specialty fine chemicals sensitive to heat or oxidation.
    • Removing moisture from food ingredients, flavour carriers and nutraceutical powders.
    • Drying electronic and battery materials that require tightly controlled residual moisture.
    • Conditioning laboratory samples, research compounds and pilot-scale test batches.
Kerone’s Tray & Vacuum Combination Dryer offers a simple, robust and flexible way to dry valuable materials without damaging their structure or quality. By combining conductive shelf heating, vacuum operation and optional hot-air circulation, it supports both quick bulk moisture removal and careful low-temperature finishing. Its static drying action protects fragile crystals, while stainless-steel construction and solvent-recovery options suit regulated and high-value production. Share your product, batch size and solvent details with Kerone, and our team will recommend the shelf area, heating medium and vacuum system best suited to your process.

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Frequently Asked Questions (FAQ)

  • Hot-air tray drying is simple and quick for surface moisture, while vacuum allows deep, low-temperature drying. A combination chamber lets you use each method where it works best, improving flexibility and product protection.

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