Yacheng YC-03 Pilot-Scale Fluid Bed Granulator and Coater

Overview

The Yacheng YC-03 Pilot-Scale Fluid Bed Granulator and Coater is an integrated, GMP-aligned fluidized-bed processing system engineered for laboratory-scale development and pilot-stage optimization of wet granulation and film coating processes. It operates on two distinct fluidization configurations—top-spray for granulation and bottom-spray for precision coating—enabling seamless transition between unit operations within a single platform. The top-spray mode utilizes a conical product bowl with an expansion chamber, where upward airflow induces fountain-like fluidization; aqueous binder solution is atomized from above, promoting liquid bridge formation followed by solid bridge consolidation into dense, spherical granules. In bottom-spray mode, the system employs a guided airflow design featuring a central draft tube and dual-inlet air distribution at the base; particles accelerate upward through the draft tube, disperse in the expansion chamber, and descend externally—repeating this cycle while receiving uniform, low-velocity droplets from a centrally mounted, upward-directed nozzle. This ensures consistent droplet impact, controlled film spreading, and rapid solvent evaporation—critical for achieving reproducible, defect-free coatings on particles as small as 50 µm.

Key Features

• PLC-based automation with color touchscreen HMI supporting real-time parameter adjustment—including inlet air temperature, product bed temperature, pulse-jet backflush frequency, peristaltic pump speed, and spray rate—without process interruption.
• Modular bowl design allows rapid interchange of conical product containers (standard 3 L capacity, scalable options available), enabling flexible batch sizing from 200 g to 3000 g per run.
• Dual-mode fluidization architecture: top-spray configuration optimized for aqueous binder granulation; bottom-spray configuration compliant with ICH Q5A and USP <1042> guidelines for functional film coating of fine particulates.
• Triple-stage inlet air filtration (pre-filter + medium-efficiency + HEPA) delivers ISO Class 8 (D-grade cleanroom) air quality per ISO 14644-1 and EU GMP Annex 1 requirements.
• Hot-swappable atomizing nozzles: standardized quick-connect interface enables nozzle replacement in under 60 seconds without stopping airflow or heating—essential for multi-step process development.
• PID-controlled thermal management with dynamic feedforward compensation ensures ±1.5 °C stability across the full 40–150 °C operating range; bed temperature is continuously fed back to modulate inlet air setpoint for optimal moisture removal kinetics.
• Patented pneumatic sealing system using inflatable elastomeric gaskets eliminates manual torqueing, reduces operator variability, and maintains leak-tight integrity during pressure-cycled operation.
• Optimized reverse-pulse backflush system minimizes filter cake buildup and extends operational uptime—demonstrated to increase granule yield by ≥8% compared to fixed-frequency pulsing in comparative trials with lactose and microcrystalline cellulose.

Sample Compatibility & Compliance

The YC-03 is validated for aqueous-phase formulations only, including hydrophilic binders (e.g., PVP K30, HPMC, starch solutions), polymer dispersions (e.g., Eudragit® E PO, Kollicoat® IR), and water-soluble active pharmaceutical ingredients (APIs). It complies with mechanical safety standards per EN 61000-6-2/6-4 (EMC), electrical safety per EN 61010-1, and supports IQ/OQ documentation packages aligned with FDA 21 CFR Part 11 requirements when paired with optional audit-trail-enabled software. All wetted surfaces are constructed from ASTM A276 Type 316L stainless steel with Ra ≤ 0.8 µm finish; non-wetted structural components meet ISO 9001:2015 manufacturing traceability protocols.

Software & Data Management

The embedded control system records time-stamped process data (temperature, airflow, spray pressure, bed depth, and energy consumption) at 1 Hz resolution. Data export is supported via USB 2.0 port to FAT32-formatted drives in CSV format—compatible with JMP, MATLAB, and SIMCA for multivariate process analysis (MVPA). Optional Ethernet connectivity enables integration into centralized MES platforms (e.g., Siemens Opcenter, Rockwell FactoryTalk) for electronic batch record (EBR) synchronization. All user actions—including parameter changes, alarm acknowledgments, and maintenance logs—are captured with operator ID and timestamp, satisfying ALCOA+ principles for data integrity.

Applications

The YC-03 serves as a critical development tool across regulated and non-regulated industries: formulation scientists use it for preformulation screening of binder viscosity effects on granule strength; QC labs employ it for accelerated stability testing of coated beads under varying RH/temperature profiles; food technologists apply it to encapsulate heat-sensitive probiotics or flavors in maltodextrin matrices; ceramic engineers utilize its precise thermal ramping to densify alumina or zirconia precursor granules prior to sintering; and agrochemical researchers develop controlled-release granules for urea or glyphosate formulations. Its scalability bridges benchtop feasibility studies to commercial-scale fluid-bed processors (e.g., Glatt GPCG, Freund GranuCon), reducing tech-transfer risk.

FAQ

Can the YC-03 handle organic solvents?
No. The system is certified exclusively for aqueous-based processing per its explosion-proof rating and exhaust handling design.
What is the minimum particle size achievable in bottom-spray coating mode?
The system has been verified to uniformly coat particles down to 50 µm median diameter (D50), provided feed material exhibits narrow size distribution (D90/D10 ≤ 3.0) and adequate flowability (Carr Index ≤ 25%).
Is remote monitoring supported out of the box?
Remote viewing of real-time trends and historical data is available via optional VNC-enabled HMI firmware; full remote control requires additional cybersecurity validation and network segmentation per IEC 62443.
Does the system include calibration certificates for temperature and airflow sensors?
Yes—factory-calibrated NIST-traceable certificates are supplied for all primary sensors; on-site recalibration intervals are recommended every 12 months or after 500 operational hours, whichever occurs first.
Can third-party spray nozzles be integrated?
Only nozzles conforming to the ISO 8503-2 mounting standard and rated for ≤10 bar operating pressure are mechanically and pneumatically compatible; Yacheng provides nozzle performance characterization reports upon request.