Great Wall R-2020EX Explosion-Proof Integrated Rotary Evaporator

Overview

The Great Wall R-2020EX Explosion-Proof Integrated Rotary Evaporator is engineered for safe, high-efficiency solvent removal and concentration under hazardous or regulated laboratory environments—particularly where flammable vapors, volatile organic compounds (VOCs), or reactive solvents are routinely processed. Based on the fundamental principle of reduced-pressure distillation, the system rotates a sample-containing flask in a heated water or oil bath while simultaneously applying controlled vacuum to lower the boiling point of solvents. This enables gentle, rapid evaporation without thermal degradation of heat-sensitive compounds. Its fully integrated explosion-proof architecture complies with IEC 60079-0 and GB 3836.1–2010 standards for equipment used in Zone 1/2 explosive atmospheres (Group II B, T4 temperature class). All critical electrical components—including the drive motor, heating unit, control cabinet, and liquid-level sensor—are certified Exd II BT4, ensuring intrinsic safety during continuous operation in chemical synthesis, pharmaceutical pilot-scale purification, and fine chemical manufacturing.

Key Features

• Explosion-proof design certified to Exd II BT4 standard, with IP65-rated control enclosure and intrinsically safe wiring pathways.
• Dual-stage condensation system: vertical triple-reflux condenser combining main (0.948 m²) and auxiliary (0.358 m²) cooling surfaces for >92% solvent recovery efficiency—even with low-boiling solvents such as diethyl ether or acetone.
• High-borosilicate glass 3.3 components (rotor flask: 20 L, collection flask: 10 L, three-way adapter) offering superior thermal shock resistance (ΔT ≥ 150°C) and chemical inertness against strong acids, bases, and halogenated solvents.
• PTFE-fluorinated rubber dual-seal technology at all vacuum joints ensures long-term leak integrity and stable vacuum maintenance (<2 kPa/h pressure rise rate).
• Motor-driven vertical bath lift (0–160 mm travel) with dry-run and liquid-level interlock protection prevents heater damage and enhances operator safety.
• Quick-connect法兰 (ISO-KF 125 mm) interface enables tool-free assembly/disassembly of glassware within <90 seconds per setup cycle.
• Modular PTFE discharge valve with ceramic core provides corrosion-resistant, drip-free sample transfer under vacuum or atmospheric conditions.
• LCD control panel displays real-time bath temperature, rotation speed, vacuum level (via optional sensor), and fault diagnostics—including overtemperature, ground fault, and overload alerts.

Sample Compatibility & Compliance

The R-2020EX accommodates a broad range of sample types—from aqueous extracts and ethanol-based botanical concentrates to chlorinated hydrocarbon solutions and ethyl acetate reaction mixtures. Its 20 L rotary flask (Φ125 mm neck) supports batch processing of viscous or foaming matrices when paired with the three-way anti-bumping adapter. All wetted parts conform to USP Class VI and ISO 10993-5 biocompatibility requirements. The system meets key regulatory expectations for GMP-compliant labs: full audit trail capability via MODBUS RTU logging (when interfaced with SCADA or LIMS), configurable alarm thresholds aligned with FDA 21 CFR Part 11 electronic record guidelines, and mechanical design traceability per ISO 9001:2015 manufacturing protocols. It is routinely deployed in QC laboratories performing ASTM D86, ISO 3405, and USP distillation validation studies.

Software & Data Management

While the R-2020EX operates as a standalone instrument with local LCD control, its RS485 port supports integration into centralized lab automation networks using industry-standard MODBUS RTU protocol. Users may log operational parameters—including setpoint vs. actual temperature deviation, rotational stability (±2 rpm), and vacuum ramp profiles—into third-party data acquisition systems (e.g., LabVIEW, DeltaV, or custom Python-based DAQ). Optional vacuum transducer output (0–10 V analog or digital) enables closed-loop pressure regulation when paired with external vacuum controllers. All firmware updates are delivered via secure USB firmware loader compliant with IEC 62443-3-3 cybersecurity frameworks for industrial control systems.

Applications

• Concentration of natural product extracts (e.g., terpenes, alkaloids) under oxygen-limited, low-temperature conditions.
• Removal of residual solvents from API intermediates prior to crystallization—meeting ICH Q3C Stage 3 limits.
• Recovery and recycling of high-purity THF, dichloromethane, or toluene in multi-step synthesis workflows.
• Preparative-scale dehydration of hygroscopic organometallic complexes without decomposition.
• Distillative purification of fragrance oils and essential oil fractions under inert nitrogen sweep (optional accessory).

FAQ

What certifications does the R-2020EX hold for use in hazardous locations?
It carries full Exd II BT4 certification per GB 3836.2–2010 and IEC 60079-1, with individual component certifications (motor, heater, control box) issued by CNEx and verified by SGS.
Can the system be integrated with a central vacuum pump station?
Yes—the unit features a standardized DN25 vacuum inlet with Viton O-ring sealing and supports connection to centralized oil-lubricated or dry scroll vacuum systems (recommended ultimate vacuum: ≤100 Pa).
Is remote monitoring supported out-of-the-box?
Local operation is standard; remote supervision requires external MODBUS master device or optional Ethernet-to-RS485 gateway (not included).
What maintenance intervals are recommended for the dual-seal system?
PTFE seals require replacement every 12 months under continuous operation; fluorinated rubber secondary seals should be inspected quarterly and replaced if surface cracking or compression set exceeds 15%.
Does the bath lifting mechanism support programmable height presets?
No—height adjustment is manual via touchscreen command, but position feedback is provided through integrated potentiometric sensing for repeatable positioning across batches.