Tianfeng TF-SFD-20m² Industrial Freeze Dryer

Overview

The Tianfeng TF-SFD-20m² Industrial Freeze Dryer is a production-scale lyophilization system engineered for high-reproducibility, continuous-cycle operation in pharmaceutical, biotechnology, food, and agricultural processing environments. Based on the fundamental principles of sublimation under controlled low-pressure and cryogenic conditions, this freeze dryer removes water from thermolabile materials by freezing the product, reducing pressure to induce sublimation of ice directly into vapor, and condensing the vapor on a −75 °C cold trap. Its 20.31 m² total shelf area supports large-batch processing of bulk solutions or vial-based formulations—enabling throughput up to 400 L per cycle or over 92,000 Φ16 mm vials. Designed for GMP-aligned manufacturing, the unit integrates a robust AISI 304 stainless steel chamber with fully polished, crevice-minimized internal geometry—including radiused corners and seam-polished welds—to ensure cleanability, reduce microbial retention risk, and comply with hygienic design principles outlined in ASME BPE and EU Annex 1.

Key Features

• 11+1 precision-machined stainless steel shelves with ±0.5 °C temperature uniformity across full range (−55 °C to +70 °C), enabled by low-viscosity silicone oil circulation and stress-relieved thermal plate fabrication
• High-efficiency dual-stage vacuum system achieving ≤2.7 Pa ultimate pressure, supported by leak rate verification ≤0.1 Pa·m³/s per ISO 27827
• −75 °C condenser with 400 kg/24 h ice capture capacity, utilizing cascade refrigeration architecture with imported compressors and optimized heat exchanger geometry
• PLC-based control system with 10.4″ color HMI, preloaded with configurable process recipes, real-time parameter logging, and alarm management compliant with IEC 61508 functional safety guidelines
• Full cGMP-compliant construction: electropolished interior surfaces, sloped drainage, validated CIP/SIP interfaces, and traceable material certifications for all wetted parts
• Modular electrical cabinet with redundant safety circuits, emergency stop logic, and integrated power monitoring (141 kW total installed load)

Sample Compatibility & Compliance

The TF-SFD-20m² accommodates diverse sample formats including bulk solutions (up to 400 L), serum vials (Φ16–Φ22 mm), trays, and irregularly shaped biological matrices such as whole insects (e.g., honeybee specimens) or botanical extracts. Its wide shelf temperature range enables primary drying of highly eutectic formulations and secondary drying of low-residual-moisture products. The system conforms to ISO 9001:2015 quality management requirements and is designed to support validation against FDA 21 CFR Part 11 (electronic records/signatures), EU GMP Annex 15 (qualification of equipment), and ICH Q5C (stability testing of biotechnological products). Documentation packages include Design Qualification (DQ), Installation Qualification (IQ), Operational Qualification (OQ), and Performance Qualification (PQ) protocols upon request.

Software & Data Management

Control and data acquisition are managed via an embedded Siemens S7-1200 PLC paired with WinCC Runtime Advanced HMI software. All critical process parameters—including shelf temperature, chamber pressure, condenser temperature, vacuum pump status, and heating power—are sampled at 1 Hz and stored with time-stamped audit trails. Data export complies with ASTM E2500-13 for raw data integrity and supports CSV, PDF, and XML formats. Electronic signature functionality, user role-based access control (admin/operator/maintainer), and automatic backup to external NAS or cloud storage meet ALCOA+ (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) data governance standards. Optional integration with MES or SCADA systems is available via OPC UA or Modbus TCP.

Applications

This freeze dryer serves validated production workflows across regulated and non-regulated sectors: terminal sterilization of injectables and vaccines; stabilization of probiotics, enzymes, and diagnostic reagents; shelf-life extension of functional foods and nutraceuticals; preservation of entomological specimens (e.g., Apis mellifera for pollination research); and lyophilization of cell culture media, monoclonal antibodies, and viral vectors. Its scalable architecture supports both pilot-line development and commercial manufacturing—particularly where batch consistency, residual moisture control (<1.0% w/w), and reconstitution time reproducibility are critical quality attributes.

FAQ

Is the TF-SFD-20m² suitable for sterile processing?
Yes—when integrated with isolator or RABS infrastructure and qualified per ISO 14644-1 Class 5 environments, its sealed chamber, SIP-capable design, and HEPA-filtered nitrogen purge option support aseptic filling line integration.
Can the system be validated for regulatory submission?
Yes—Tianfeng provides complete 3Q documentation packages (DQ/IQ/OQ/PQ), FAT/SAT reports, and calibration certificates traceable to NIST standards.
What maintenance intervals are recommended?
Daily visual inspection of oil levels and condenser frost accumulation; quarterly vacuum pump oil change and filter replacement; annual full system performance verification including shelf temperature mapping and leak rate retest.
Does the unit support remote monitoring?
Yes—via optional Ethernet/Wi-Fi module with secure HTTPS web interface and SNMP alerting for critical alarms (e.g., vacuum loss, condenser overload, power failure).
Are custom shelf configurations available?
Yes—custom shelf depth, perforation patterns, and material coatings (e.g., titanium nitride) can be specified during order engineering, subject to mechanical and thermal validation.