Tianfeng TF-FZG Industrial-Scale Food Freeze Dryer
| Brand | Tianfeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | TF-FZG |
| Instrument Type | Standard Shelf-Type Freeze Dryer |
| Application Scope | Production-Scale Processing |
| Freeze-Drying Area | 5–100 m² |
| Ultimate Vacuum | 2.7 Pa |
| Condensate Capacity (24 h) | 100–1500 kg/24 h |
| Cold Trap Temperature | −65 °C |
| Main Unit Dimensions | 900 × 950 mm |
Overview
The Tianfeng TF-FZG Industrial-Scale Food Freeze Dryer is a continuously operating, shelf-type lyophilization system engineered for GMP-compliant production of heat-sensitive food matrices—including fruits, vegetables, herbs, functional ingredients, and botanical extracts. It operates on the principle of sublimation-based dehydration: materials are first frozen solidly at cryogenic temperatures (≤ −65 °C), then subjected to high vacuum (≤ 2.7 Pa) while controlled heat is applied to enable direct phase transition of ice to vapor—bypassing the liquid state entirely. This preserves structural integrity, volatile compounds, enzymatic activity, color, and reconstitution properties far more effectively than conventional thermal drying methods (e.g., hot-air, spray, or drum drying), which typically induce shrinkage, oxidation, Maillard reactions, and irreversible denaturation.
Key Features
- Modular shelf design with uniform temperature distribution across 5–100 m² active drying area—scalable for pilot batch validation or full-scale commercial throughput.
- Cryogenic cold trap operating at ≤ −65 °C, optimized for high-efficiency water vapor capture during primary and secondary drying phases.
- Stainless steel 304 construction throughout product-contact zones; fully welded, electropolished chambers compliant with FDA-recommended surface finish standards (Ra ≤ 0.8 µm).
- Integrated vacuum control system with dual-stage oil-sealed rotary vane pump and optional dry vacuum backup; real-time pressure monitoring with PID-regulated feedback loop.
- GMP-aligned engineering: smooth internal corners, zero dead-leg piping, validated clean-in-place (CIP) compatibility, and documentation-ready process traceability architecture.
- Compliance-ready mechanical design aligned with ISO 22000, ISO 9001:2015, and EU Annex 1 requirements for pharmaceutical-grade food processing equipment.
Sample Compatibility & Compliance
The TF-FZG accommodates heterogeneous feedstock including sliced fruits (apple, strawberry, mango), leafy vegetables (spinach, kale), root crops (carrot, sweet potato), herbal powders, fermented cultures, and protein-rich dairy concentrates. Its shelf configuration supports tray loading (standard 300 × 400 mm or custom dimensions), bulk pans, and even pre-filled blister trays for portion-controlled snack production. All wetted components meet EC 1935/2004 food contact material regulations. The system is designed to support validation protocols per ASTM F2697 (Standard Guide for Validation of Freeze Drying Processes) and ICH Q5C (Quality of Biotechnological Products: Stability Testing). Full IQ/OQ documentation packages are available upon request for regulatory audits under FDA 21 CFR Part 11, EU GMP Annex 11, or China NMPA GMP Annex 1.
Software & Data Management
Equipped with an industrial-grade PLC-based control interface (Siemens S7-1200 series), the TF-FZG provides programmable multi-step drying cycles with adjustable ramp rates, hold times, shelf temperature setpoints (−50 °C to +60 °C), and vacuum setpoints (1–100 Pa). Real-time logging records >20 process variables—including shelf temp, chamber pressure, condenser temp, vacuum pump current, and elapsed cycle time—at configurable intervals (1–60 s). Data export is supported via USB or Ethernet (Modbus TCP) in CSV format. Audit trail functionality meets ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) and supports electronic signature workflows compliant with 21 CFR Part 11 when integrated with validated LIMS or MES platforms.
Applications
- Production of ready-to-eat fruit and vegetable crisps retaining >90% vitamin C, polyphenols, and sensory attributes.
- Stabilization of probiotic cultures, enzymes (e.g., bromelain, papain), and plant-derived nutraceuticals without thermal degradation.
- Preparation of instant soup bases, seasoning blends, and powdered broths with rapid rehydration kinetics and minimal off-flavors.
- Processing of traditional Chinese medicinal herbs (e.g., ginseng, goji berry, astragalus) under documented critical process parameters (CPPs) for consistent potency and shelf life.
- Supporting contract manufacturing organizations (CMOs) in developing scalable lyophilization processes transferable from lab-scale (e.g., Labconco FreeZone) to production environments.
FAQ
What is the typical drying cycle time for a 10 mm thick apple slice at 5 m² scale?
Cycle duration depends on initial moisture content and target residual moisture (<5%), but averages 18–26 hours under standard primary drying (−30 °C shelf, 10–20 Pa) and secondary drying (+20 °C, <5 Pa) conditions.
Does the TF-FZG support steam sterilization (SIP) of the chamber?
No—this model is not SIP-rated; it relies on validated chemical sanitization (e.g., VHP or peracetic acid) per food-grade cleaning protocols.
Can the system be integrated with a nitrogen purge module for oxygen-sensitive products?
Yes—optional inert gas backfilling (N₂ or Ar) is available with mass flow controller and residual O₂ monitoring (0.1–1% range).
Is remote monitoring supported via SCADA or cloud platform?
Basic remote viewing is enabled via embedded web server (HTTP/HTTPS); full SCADA integration (OPC UA, MQTT) requires optional communication gateway module.
What documentation is provided for GMP validation?
Factory acceptance test (FAT) report, material certifications (3.1 EN 10204), electrical safety certification (CE/LVD), and user requirement specification (URS)-aligned IQ/OQ templates are included in standard delivery package.
