Great Wall R-2050Ex Explosion-Proof Large-Capacity Rotary Evaporator

Overview

The Great Wall R-2050Ex Explosion-Proof Large-Capacity Rotary Evaporator is an engineered solution for safe, scalable solvent removal and concentration under reduced pressure in pilot-scale and process-development laboratories. Designed for compliance with hazardous area classification requirements, it operates on the principle of vacuum-assisted rotary distillation: a rotating 50 L evaporation flask increases surface area and promotes uniform thin-film formation, while controlled bath heating (±1.5 °C accuracy) and high-efficiency condensation enable reproducible recovery of heat-sensitive compounds. Its Ex d b IIB T4 Gb certification confirms suitability for Zone 1/21 environments where flammable vapors or combustible dusts may be present—making it appropriate for pharmaceutical API purification, fine chemical synthesis, natural product isolation, and food-grade extract processing where organic solvents (e.g., ethanol, acetone, ethyl acetate) are routinely handled.

Key Features

• Explosion-proof certified components: motor, heating bath, and electrical control cabinet conform to IEC 60079-1 and GB 3836.1–2010 standards (Ex d b IIB T4 Gb), ensuring operational integrity in classified atmospheres.
• DIN 3.3 borosilicate glass assembly (including 50 L rotating flask, 20 L collection flask, triple-neck buffer flask, and dual-stage condenser) offers exceptional thermal shock resistance, chemical inertness, and optical clarity for process monitoring.
• High-capacity dual-condensation system: main condenser (1.15 m²) and auxiliary condenser (0.4 m²) arranged in a three-pass reflux configuration maximize vapor capture efficiency and minimize solvent loss—even during high-throughput evaporation (up to 9 L/h water equivalent).
• PTFE–fluoroelastomer dual-seal design at all ground-glass joints ensures long-term vacuum integrity (<0.03 kPa/min leakage rate) and resistance to aggressive solvents including chlorinated hydrocarbons and strong acids.
• Electrically actuated lifting mechanism for the stainless steel (06Cr19Ni10) heating bath enables precise immersion depth control, integrated with liquid-level sensing and dry-burn cutoff protection.
• LCD interface with rotary encoder allows intuitive, real-time adjustment and display of rotation speed (20–110 rpm, DC stepless control) and bath temperature (+5 to 95 °C), supporting method reproducibility across shifts and operators.
• Quick-connect法兰 (ISO-KF 125) joints simplify assembly/disassembly; PTFE-coated discharge valve ensures corrosion-free, contamination-free sample transfer without interrupting continuous operation.

Sample Compatibility & Compliance

The R-2050Ex accommodates thermally labile and highly viscous samples—including crude plant extracts, polymer solutions, fermentation broths, and reaction mixtures containing volatile organics—without degradation or bumping. Its 3.3 borosilicate glass wetted path complies with USP , ISO 4796-1, and ASTM E438 Type I Class A specifications. All electrical enclosures meet IP20 ingress protection and Pollution Degree 2 per IEC 60664-1. The system supports GLP-compliant documentation when paired with validated external vacuum controllers and temperature loggers. While not inherently 21 CFR Part 11 compliant, its analog control architecture permits integration with third-party electronic lab notebooks (ELNs) and audit-trail-enabled data acquisition systems.

Software & Data Management

The R-2050Ex operates via embedded microcontroller-based logic with no proprietary software dependency. All operational parameters (temperature setpoint, actual bath temperature, rotation speed, runtime) are displayed locally on the LCD panel and can be manually recorded. For automated data capture, optional analog output signals (0–10 V or 4–20 mA) are available for temperature and RPM—enabling connection to PLCs, SCADA systems, or validated chart recorders used in GMP manufacturing environments. No onboard memory or network interface is included, aligning with industry preference for air-gapped instrumentation in regulated settings where cybersecurity and validation burden must be minimized.

Applications

• Pilot-scale isolation of active pharmaceutical ingredients (APIs) from reaction quenches using low-boiling solvents under Class I Division 1 conditions.
• Concentration of heat-sensitive nutraceutical extracts (e.g., curcuminoids, anthocyanins) without thermal decomposition.
• Removal of residual solvents from polymer synthesis batches prior to extrusion or lyophilization.
• Distillative purification of fragrance compounds and essential oils under inert atmosphere (optional nitrogen purge kit available).
• Process development studies requiring scalable evaporation kinetics data transferable to industrial wiped-film or falling-film evaporators.

FAQ

What explosion protection standard does the R-2050Ex meet?
It conforms to Ex d b IIB T4 Gb per GB 3836.1–2010 / IEC 60079-1, suitable for use in Zone 1 (gas) and Zone 21 (dust) hazardous locations.
Can the system operate continuously for extended periods?
Yes—designed for 24/7 operation with thermal overload protection, automatic dry-burn shutdown, and sealed-for-life motor bearings rated for >10,000 hours.
Is the 50 L rotating flask compatible with standard ISO-KF 125 vacuum manifolds?
Yes—the flask features a DIN 28755-compatible ISO-KF 125 (DN125) conical ground joint, enabling direct coupling to industrial vacuum lines and trap assemblies.
What maintenance intervals are recommended for the sealing system?
PTFE–fluoroelastomer gaskets should be inspected every 500 operating hours and replaced if compression set exceeds 15% or visible cracking occurs.
Does the unit support external temperature probe input for jacketed reactor integration?
No—temperature control is limited to the built-in PT100 (3-wire) bath sensor; however, analog outputs allow external cascade control via programmable logic controllers.