Tianfeng TF-FZG-20 Industrial-Scale Vacuum Freeze Dryer

Overview

The Tianfeng TF-FZG-20 is an industrial-scale vacuum freeze dryer engineered for continuous, reproducible lyophilization of heat-sensitive biological and botanical materials—including fruit purees, herbal extracts (e.g., Eucommia ulmoides), functional foods, pet nutrition formulations, and nutraceutical intermediates. Operating on the fundamental principle of sublimation—where ice transitions directly from solid to vapor under deep vacuum and controlled low temperature—the system preserves structural integrity, enzymatic activity, volatile aroma compounds, and thermolabile phytochemicals far more effectively than conventional hot-air or spray drying. Its integrated chamber–condenser architecture enables efficient water vapor capture without cross-contamination, while the precisely regulated shelf temperature profile (−45 °C to +70 °C) supports both primary drying (ice sublimation) and secondary drying (adsorbed moisture desorption) in a single pass.

Key Features

• GMP-aligned construction: Main chamber and shelves fabricated from electropolished AISI 304 stainless steel with mirror-finish interior surfaces, eliminating crevices and ensuring full cleanability per FDA and EU Annex 1 hygiene standards.
• Integrated chamber–cold trap design with rear-mounted condenser: Compact footprint (1100 mm W × 2300 mm D), front-access observation window with LED illumination, and zero dead-leg geometry for CIP/SIP compatibility.
• Configurable shelf system: 8+1 adjustable shelves with 65 mm spacing; optional aluminum extrusion (high thermal conductivity, smooth surface) or 304 stainless steel (laser-welded, brushed finish, superior corrosion resistance).
• High-capacity refrigeration: Dual-stage cascade refrigeration system using premium imported compressors, achieving ≤ −65 °C condenser temperature within ≤ 90 minutes and sustaining < 2.7 Pa ultimate vacuum during extended cycles.
• Robust vacuum architecture: Customizable vacuum pump train—including ULVAC (formerly Anelva) high-vacuum roots + scroll combinations—optimized for rapid evacuation and stable pressure control across variable load conditions.
• Industrial PLC control: Omron CJ2M-series controller with HMI touchscreen interface; supports ≥ 100 user-defined drying protocols, real-time parameter override, step-jump functionality, and audit-trail-enabled data logging compliant with 21 CFR Part 11 requirements.
• Efficient defrosting: Steam-assisted or immersion-based defrost cycle with automatic condensate drainage, minimizing downtime and preventing residual ice buildup on condenser coils.

Sample Compatibility & Compliance

The TF-FZG-20 accommodates diverse sample formats including bulk liquid solutions (up to 200 L per batch), tray-loaded sliced fruits (banana, mango, strawberry), powdered herbal extracts, freeze-dried pet treats, and pharmaceutical-grade botanical actives. All wetted parts conform to USP Class VI and ISO 8573-1:2010 (Class 2 compressed air purity) specifications where applicable. The system’s mechanical design adheres to ASME BPVC Section VIII Div. 1 for pressure boundary integrity, while its operational documentation supports GLP/GMP validation packages—including IQ/OQ/PQ protocols—for food, dietary supplement, and traditional medicine manufacturing facilities.

Software & Data Management

The embedded control software provides time-stamped, encrypted storage of all process variables (shelf temp, chamber pressure, condenser temp, vacuum rate, elapsed time) with export capability to CSV or PDF. Built-in trend analysis tools enable comparative cycle evaluation and deviation investigation. Optional Ethernet/IP or Modbus TCP connectivity allows integration into centralized MES or SCADA environments. Electronic signatures, role-based access control, and immutable audit logs satisfy regulatory expectations for data integrity under ICH-GCP, FDA 21 CFR Part 11, and EU Annex 11.

Applications

• Fruit & vegetable processing: Production of rehydration-stable banana chips, mango leathers, and mixed-fruit crisps retaining > 92% original vitamin C and anthocyanin content.
• Herbal extract stabilization: Lyophilization of Eucommia ulmoides bark extract to preserve lignan glycosides and iridoid compounds without thermal degradation.
• Nutraceutical manufacturing: Batch-wise drying of probiotic suspensions, enzyme blends, and omega-3 microcapsules under oxygen-controlled nitrogen purge.
• Pet food innovation: Development of shelf-stable, high-protein freeze-dried meal toppers and training treats meeting AAFCO nutritional profiles.
• Research-scale scale-up: Bridging lab-scale (e.g., Labconco FreeZone) to pilot/production volumes while maintaining consistent critical quality attributes (CQAs) such as residual moisture (< 2.5%), cake structure homogeneity, and dissolution kinetics.

FAQ

What is the maximum batch capacity for liquid solutions?
Up to 200 L of aqueous or low-viscosity formulations can be processed uniformly across the 20 m² shelf area.
Does the system support automated cycle validation?
Yes—preconfigured validation templates and electronic signature workflows are included for IQ/OQ execution per ISO 9001 and GMP Annex 15 guidelines.
Can shelf temperature be ramped independently per zone?
No—shelves operate in uniform thermal zones; however, multi-step ramp/hold profiles are fully programmable across the entire shelf stack.
Is remote monitoring supported out-of-the-box?
Standard Ethernet port enables local network access; optional cloud gateway module adds secure remote diagnostics and alarm notification via email/SMS.
What maintenance intervals are recommended for the vacuum pump train?
Oil changes every 2,000 operating hours; inlet filter replacement every 500 hours; annual calibration of pressure transducers and RTDs by certified metrology service.