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

Overview

The Tianfeng TF-FZG-20 is an industrial-scale, shelf-type freeze dryer engineered for reproducible, scalable lyophilization of thermolabile pharmaceuticals, botanical extracts, functional food ingredients, and traditional Chinese medicinal materials. Operating on the fundamental principles of sublimation—where ice transitions directly from solid to vapor under controlled low-pressure and cryogenic conditions—the system enables water removal without liquid-phase transition, preserving structural integrity, bioactivity, and chemical stability. Its 20 m² effective drying area supports batch processing of up to several hundred kilograms of raw material per cycle, making it suitable for pilot-to-production transfer in regulated environments. The integrated chamber–cold trap architecture minimizes thermal bridging and enhances vacuum integrity, while the AISI 304 stainless steel construction—mirror-polished to Ra ≤ 0.4 µm—meets hygienic design standards outlined in ASME BPE-2022 and EU GMP Annex 1.

Key Features

• Modular shelf configuration with 10 active + 1 reference shelves (200 × 100 × 1.5 cm), spaced at 70 mm intervals for optimal heat transfer uniformity and loading flexibility.
• Shelf temperature control range from −45 °C to +80 °C, enabling precise ramp-hold protocols for primary and secondary drying stages; optional electric heating (24 kW) ensures rapid shelf warming without steam dependency.
• Cold trap rated to ≤ −65 °C with ≥ 400 kg/24 h condensation capacity, fabricated from electropolished 304 stainless steel coiled tubing to prevent cross-contamination and support CIP validation.
• Omron CP-series PLC paired with an industrial PC running proprietary lyoControl™ software, supporting multi-user authentication, audit-trail logging, recipe versioning, and real-time parameter override during active cycles.
• GMP-compliant mechanical design: zero dead-leg piping, sloped surfaces (≥ 1°), full-welded joints, and IP65-rated electrical enclosures; observation window with LED illumination facilitates non-invasive process monitoring.
• Refrigeration system built with high-efficiency semi-hermetic compressors (Embraco/GEA-grade), dual-stage cascade cooling, and redundant pressure safety interlocks compliant with PED 2014/68/EU.

Sample Compatibility & Compliance

The TF-FZG-20 accommodates a broad spectrum of sample formats—including bulk trays, stoppered vials (up to 50 mL), aluminum pans, and custom molds—without requiring chamber reconfiguration. Its validated performance envelope supports lyophilization of aqueous suspensions, hydroalcoholic extracts, enzyme solutions, probiotic cultures, and polysaccharide-rich botanical matrices. All wetted surfaces conform to USP , ISO 10993-5 cytotoxicity requirements, and EHEDG Doc. 8 hygienic design guidelines. Documentation packages include IQ/OQ protocols aligned with ASTM F2699-21 and ICH Q5C stability testing frameworks. The system is preconfigured for 21 CFR Part 11 compliance, including electronic signature enforcement, role-based access control, and immutable data archiving via encrypted SQLite databases.

Software & Data Management

The embedded lyoControl™ platform provides deterministic control over all critical process parameters: shelf temperature setpoints, chamber pressure (via capacitance manometer), condenser temperature, and time-based phase transitions. Each cycle generates a timestamped, digitally signed .CSV and .PDF report containing raw sensor data, alarm history, and deviation annotations. Data export supports direct integration with LIMS (e.g., LabWare, Thermo Fisher SampleManager) and MES platforms via OPC UA 1.04. Remote diagnostics are enabled through TLS 1.2-secured Wi-Fi or Ethernet, allowing authorized engineers to perform firmware updates, calibration verification, and fault-tree analysis without onsite presence. Audit trails retain ≥ 10 years of user actions—including login/logout, recipe edits, and manual overrides—with SHA-256 hashing for forensic integrity.

Applications

This system serves as a primary lyophilization platform in herbal medicine manufacturing facilities complying with Chinese Pharmacopoeia (ChP) 2020 Volume IV, Section 0991; in nutraceutical contract development labs adhering to NSF/ANSI 173; and in university-based phytochemistry centers conducting stability studies per ICH Q1A(R2). Typical use cases include: stabilization of volatile terpenoids from *Lavandula angustifolia* extracts; preservation of polysaccharides from *Ganoderma lucidum* mycelium; long-term storage of bee venom peptides (melittin, apamin); and production of sterile, endotoxin-free formulations for injectable TCM derivatives. Its scalability bridges analytical-scale freeze drying (e.g., Labconco FreeZone) to commercial manufacturing lines, reducing technology transfer risk.

FAQ

Is the TF-FZG-20 suitable for sterile pharmaceutical manufacturing?
Yes—it meets core GMP Annex 1 requirements for aseptic processing environments when installed with HEPA-filtered chamber air supply, steam-in-place (SIP) capability, and validated leak rate ≤ 0.5 mbar·L/s (helium test).
Can shelf temperature profiles be programmed independently per shelf zone?
No—shelves operate in synchronized mode to ensure uniform thermal mass distribution; however, individual shelf sensors provide real-time feedback for closed-loop PID correction.
What vacuum pump configurations are available for regulatory submissions?
Standard configuration includes ULVAC DLA-1000B dry scroll pumps with oil-free operation; optional backup turbomolecular pumping achieves ≤ 1 × 10⁻⁴ Pa base pressure for high-purity applications.
Does the system support automated cleaning-in-place (CIP)?
Yes—integrated spray ball manifolds and programmable rinse-hold-dry sequences are available; validation documentation follows ASME BPE-2022 Section 6.5.
How is data integrity ensured during power interruption?
The PLC retains volatile memory for ≥ 72 hours via supercapacitor backup; all active cycle data is written to non-volatile flash storage at 1-second intervals.