Yacheng YCV Vacuum Belt Continuous Dryer

Overview

The Yacheng YCV Vacuum Belt Continuous Dryer is an engineered solution for gentle, continuous, and scalable drying of thermolabile, high-viscosity, and moisture-sensitive materials under controlled vacuum conditions. Unlike conventional spray dryers—whose elevated inlet temperatures (often >120 °C) induce thermal degradation—or batch vacuum ovens—characterized by long cycle times, poor reproducibility, and microbial contamination risks—the YCV system operates on the principle of conductive heat transfer via heated and cooled stainless-steel conveyor belts within a sealed, evacuated chamber. This enables precise, low-temperature drying (35–90 °C) with minimal residence time (30–60 min), preserving active pharmaceutical ingredients (APIs), botanical extracts, enzymes, probiotics, and functional food components without denaturation or oxidation. The system integrates continuous feed, in-line drying, cooling, mechanical delamination, and integrated size reduction—all under vacuum—making it suitable for GMP-compliant pilot-scale and early commercial manufacturing environments.

Key Features

• Conductive drying architecture: Dual-zone heating/cooling plates ensure uniform thermal contact with the belt-mounted material layer, enabling rapid moisture removal while maintaining structural integrity of heat-sensitive compounds.
• Modular multi-layer belt configuration: Available in 1–10 belt tiers to accommodate throughput scalability and residence time optimization without redesigning core vacuum infrastructure.
• PLC-based control system with HMI touchscreen interface: Real-time monitoring and adjustment of belt speed (via frequency-controlled motors), vacuum level, zone-specific temperature profiles, feed rate, and cooling setpoints.
• Integrated post-drying processing: Automatic delamination of dried cake from the belt surface followed by inline milling to achieve consistent particle size distribution (50–500 µm) and excellent flowability for direct capsule filling or tableting.
• GMP-enabling design elements: Smooth-welded 316L stainless-steel wetted surfaces, CIP-compatible internal geometry, validated vacuum integrity, and full audit trail capability for critical process parameters.
• Energy-efficient operation: Demonstrated 65% lower electricity consumption vs. equivalent-capacity vacuum ovens and 75% reduction vs. spray dryers; steam usage reduced by up to 85% due to closed-loop heat recovery and absence of hot-gas generation.

Sample Compatibility & Compliance

The YCV dryer is validated for aqueous-based feeds—including herbal decoction concentrates (e.g., Salvia miltiorrhiza, Ginseng, Angelica sinensis), protein-rich dairy streams (e.g., whey, skim milk), functional beverage bases (e.g., instant tea, coffee, malted milk), and fine chemical intermediates (e.g., dyes, agrochemical actives). Its low-temperature, oxygen-free environment meets stability requirements for USP , ICH Q5C, and ISO 13485 frameworks. System documentation supports FDA 21 CFR Part 11 compliance when configured with electronic signature-enabled software, role-based access control, and immutable process data logging. All materials in contact with product conform to ASTM F899 and EU 1935/2004 standards for food/pharma contact surfaces.

Software & Data Management

The embedded PC-based control platform provides comprehensive data acquisition, trending, and export functionality. Process variables—including vacuum pressure (mbar), belt velocity (mm/min), zone temperatures (±0.5 °C accuracy), feed pump RPM, and real-time mass loss—are logged at user-defined intervals (1–60 sec). Historical batches are indexed by timestamp, operator ID, and recipe version. Raw data exports to CSV or Excel format support statistical process control (SPC) analysis per ISO 9001 and ICH Q9 guidelines. Optional integration with MES or LIMS systems is available via OPC UA or Modbus TCP protocols.

Applications

• Pharmaceutical R&D and pilot manufacturing: Drying of herbal extracts, peptide formulations, and sterile-grade excipients requiring residual moisture <2% w/w.
• Nutraceutical production: Stabilization of probiotics, vitamins, and polyphenol-rich botanical powders without antioxidant loss.
• Food ingredient development: Production of free-flowing instant beverages, enzyme blends, and dairy-based functional powders with preserved solubility and dispersibility.
• Fine chemical synthesis: Isolation of thermally unstable catalysts, dyes, and pesticide intermediates where solvent recovery under vacuum is critical.

FAQ

What types of feed solutions are compatible with the YCV dryer?

Aqueous extracts, colloidal suspensions, and viscous pastes with solids content between 20–70% w/w are routinely processed. Non-aqueous solvents require custom solvent recovery integration.

Can the system handle GMP validation requirements?

Yes—design includes IQ/OQ documentation templates, calibration traceability for all sensors, and configurable electronic audit trails compliant with Annex 11 and 21 CFR Part 11 when equipped with certified software modules.

Is in-line particle size control adjustable?

Final particle size is governed by belt speed, drying temperature profile, and integrated mill settings; typical output falls within 50–500 µm, with narrow distribution achievable via post-mill sieving options.

What maintenance intervals are recommended?

Belt tension and alignment checks every 500 operational hours; vacuum pump oil change every 2000 hours; full preventive maintenance including heater calibration and seal inspection annually or per 3000 operating hours.

Does the system support remote monitoring?

Standard Ethernet connectivity enables secure remote diagnostics and parameter review via authenticated web interface; optional cloud-based dashboard integration is available for fleet-wide equipment oversight.