Tianfeng TF-FZG-30 Industrial-Scale Freeze Dryer

Overview

The Tianfeng TF-FZG-30 is an industrial-scale, in-situ freeze dryer engineered for continuous, GMP-aligned production of heat-sensitive biological and food materials—including herbal extracts (e.g., hawthorn slices), aquatic products (e.g., catfish fillets), and functional fruit/vegetable crisps. It operates on the fundamental principles of lyophilization: sublimation of ice under deep vacuum (< 2.7 Pa) while maintaining product integrity through precise thermal management of the shelf system. Unlike benchtop or pilot-scale units, the TF-FZG-30 integrates pre-freezing, primary drying, and secondary drying within a single, sealed chamber—eliminating manual transfer and minimizing contamination risk. Its 30 m² total shelf area supports batch processing of up to 300 L of bulk solution or equivalent solid load, making it suitable for commercial-scale manufacturing in food, nutraceutical, and botanical sectors where regulatory traceability and process repeatability are critical.

Key Features

• In-situ freezing and drying: Eliminates inter-process handling; maintains sterility and structural fidelity of delicate matrices such as berry tissues or fish muscle fibers.
• PLC-based control architecture with 15-inch touchscreen HMI: Enables intuitive recipe setup, real-time monitoring of shelf temperature (±0.5 °C stability), chamber pressure, condenser load, and vacuum ramp rates.
• Uniform thermal distribution: Dual-loop circulation system delivers heat transfer fluid across all 11 shelves (10 working + 1 bottom heating shelf), ensuring ≤1 °C inter-shelf temperature deviation during both freezing and desorption phases.
• High-capacity condensation: Cryogenic condenser rated at ≤−65 °C with 600 kg/24 h ice capture capacity ensures stable vacuum maintenance even during high-moisture-load cycles (e.g., fresh hawthorn pulp).
• Modular compliance readiness: Integrated ports and control logic support validated CIP (Clean-in-Place) using heated detergent solutions and SIP (Sterilize-in-Place) via steam injection—fully compatible with FDA 21 CFR Part 11 audit trail requirements when paired with optional electronic signature modules.
• Hydraulic stoppering interface: Optional integration with stopper-closing mechanisms for vial-based pharmaceutical applications, extending platform utility beyond food processing.

Sample Compatibility & Compliance

The TF-FZG-30 accommodates heterogeneous sample formats—including trays of sliced fruits, stacked fish fillets, bulk herb powders, and pre-filled vials—without requiring format-specific hardware modifications. Shelf spacing (65 mm) allows flexible loading of standard ISO 8573-compliant stainless steel trays (300 × 400 mm to 1200 × 2000 mm). All wetted surfaces are electropolished AISI 316L stainless steel, compliant with EC 1935/2004 for food contact materials. The system meets ISO 22000 prerequisite program requirements for food processing equipment and supports validation per ASTM F2476 (Standard Guide for Validation of Freeze Drying Processes) and USP (Sterile Preparation). Full IQ/OQ documentation packages are available upon request.

Software & Data Management

Equipped with embedded Windows-based SCADA software, the TF-FZG-30 logs ≥10,000 data points per second across 32 analog/digital channels. All process curves—including shelf temperature profiles, chamber pressure decay, condenser temperature drift, and vacuum pump current—are time-stamped, digitally signed, and exportable in CSV or PDF format. Remote access via secure VPN enables off-site supervision and troubleshooting. Audit trails comply with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) and are fully compatible with enterprise LIMS and MES systems.

Applications

• Botanical processing: Stabilization of volatile terpenes and polyphenols in hawthorn (Crataegus spp.), ginseng, and goji berries without Maillard degradation.
• Aquatic product preservation: Retention of myofibrillar protein structure and omega-3 fatty acid integrity in catfish, salmon, and shrimp snacks.
• Functional food development: Production of low-density, rehydratable vegetable crisps (e.g., sweet potato, kale) with >95% moisture removal and minimal shrinkage.
• Nutraceutical intermediates: Lyophilized enzyme blends, probiotic powders, and plant-derived bioactives intended for capsule or tablet formulation.
• Research-scale process translation: Bridging lab-scale lyophilization parameters (e.g., collapse temperature, drying rate) to full production conditions using identical shelf geometry and control logic.

FAQ

Does the TF-FZG-30 support automated cycle development?
Yes—its built-in recipe editor allows users to define multi-stage temperature ramps, pressure modulation steps, and endpoint detection logic (e.g., pressure rise test or product thermocouple delta-T threshold).
Is remote diagnostics supported out of the box?
Yes—the system includes embedded Ethernet connectivity and supports secure remote login via TLS 1.2 encrypted VNC sessions.
Can the unit be validated for pharmaceutical use?
While primarily designed for food and botanical applications, its material construction, CIP/SIP interfaces, and data integrity features meet baseline requirements for non-sterile pharmaceutical intermediate processing per ICH Q5C and WHO TRS 986 Annex 6.
What cooling infrastructure is required?
A dedicated closed-loop chiller system delivering 42 m³/h at 7–12 °C inlet temperature is mandatory; field verification of cooling tower capacity and glycol concentration is recommended prior to commissioning.
How is shelf temperature calibrated?
Each shelf is equipped with dual Pt100 RTD sensors; calibration follows ASTM E2847 using NIST-traceable dry-block calibrators, with certificate-of-calibration provided post-installation.