Great Wall R-2050EX Explosion-Proof Integrated Rotary Evaporator

Overview

The Great Wall R-2050EX Explosion-Proof Integrated Rotary Evaporator is an engineered solution for safe, high-capacity solvent removal and concentration under reduced pressure in hazardous environments. Designed in accordance with IEC 60079-0 and GB 3836.1–2010 standards for explosive atmospheres, the system integrates vacuum distillation, precise temperature regulation, and intrinsically safe motion control into a single robust platform. Its core operation relies on controlled rotational evaporation—where sample rotation increases surface area while vacuum lowers boiling points—and concurrent condensation via dual-stage vertical condensers. This architecture enables efficient separation of thermolabile compounds, volatile solvents, and flammable mixtures commonly encountered in fine chemical synthesis, pharmaceutical process development, and agrochemical formulation labs. Unlike conventional rotary evaporators, the R-2050EX incorporates certified Ex d II BT4 explosion-proof components across all critical subsystems—including motor, heater, electrical cabinet, and level sensors—ensuring compliance with Zone 1/2 classification requirements for Group II B gases (e.g., acetone, ethanol, toluene).

Key Features

• Explosion-proof certification: All electrical and thermal components carry valid Ex d II BT4 marking per GB 3836.2–2010 and are supplied with third-party explosion-proof certification documentation.
• Dual condensation system: Vertical triple-reflux condenser assembly comprising main condenser (1.15 m²) and auxiliary condenser (0.4 m²), fabricated from borosilicate glass 3.3 (DIN ISO 3585), ensures >92% solvent recovery efficiency even at elevated feed rates.
• Enhanced safety architecture: PTFE-fluoroelastomer dual-seal vacuum joints maintain stable vacuum integrity (<2 kPa/h pressure rise rate); integrated liquid-level sensor prevents dry-bath operation and triggers automatic shutdown.
• Motorized lift mechanism: Electrically actuated bath升降 (0–170 mm travel) enables reproducible immersion depth control and eliminates manual handling risks during batch transitions.
• Quick-connect flange system: Standardized ISO-KF 125 mm (DN125) glass interfaces allow tool-free assembly/disassembly of 50 L evaporation flask and 20 L collection vessel.
• Corrosion-resistant fluid path: PTFE-coated discharge valve and SUS304 stainless steel bath resist degradation from acidic, alkaline, or halogenated solvents.
• Intelligent control interface: Backlit LCD panel displays real-time rotation speed (20–110 rpm, infinitely variable), bath temperature (ambient +5°C to 95°C), and system status indicators with configurable alarm thresholds.

Sample Compatibility & Compliance

The R-2050EX accommodates a broad range of sample matrices including organic solutions, aqueous extracts, polymer solutions, and reaction mixtures containing low-flashpoint solvents (flash point <60°C). Its design conforms to key international safety and quality frameworks: IEC 60079-0 (explosive atmospheres — general requirements), ISO 14644-1 (cleanroom compatibility of external surfaces), and GB/T 19001–2016 (equivalent to ISO 9001). For regulated environments, the MODBUS RTU protocol over RS485 supports integration into centralized lab automation systems compliant with FDA 21 CFR Part 11 when paired with validated SCADA software. All glassware meets ASTM E438 Type I, Class A specifications for dimensional accuracy and thermal shock resistance.

Software & Data Management

While the R-2050EX operates as a standalone instrument with embedded microcontroller-based logic, its RS485 port enables bidirectional communication with external supervisory systems. Through standard MODBUS RTU register mapping, users can remotely monitor temperature setpoints, actual bath temperature, rotation speed, vacuum status, and fault codes. Audit trails—including operator ID (via external authentication gateway), parameter changes, and event timestamps—can be logged externally to satisfy GLP/GMP data integrity requirements. No proprietary software is required; integration with LabVantage, Thermo Fisher SampleManager, or custom Python-based DAQ platforms is fully supported.

Applications

• Pharmaceutical intermediate purification under ATEX-compliant conditions
• Concentration of natural product extracts (e.g., terpenes, alkaloids) without thermal degradation
• Removal of residual solvents from API batches prior to lyophilization or crystallization
• High-throughput solvent exchange in catalyst recovery workflows
• EPA Method 3510C-compliant sample preparation for wastewater analysis
• Synthesis scale-up support in pilot plants handling Class IB/IC flammable liquids

FAQ

What explosion-proof certification does the R-2050EX hold?

The unit complies with GB 3836.1–2010 and GB 3836.2–2010, carrying the Ex d II BT4 marking for use in Zone 1 and Zone 2 hazardous areas with Group II B gases.
Can the system operate continuously with automatic fraction collection?

Yes—the integrated auto-switching valve allows uninterrupted distillation while enabling sequential collection into multiple receivers without breaking vacuum or adjusting rotation speed.
Is the condenser assembly compatible with dry ice/acetone cooling?

The vertical dual-condenser design supports both circulating chiller (recommended: –20°C to 5°C supply) and cryogenic coolant jackets; direct dry ice insertion is not advised due to thermal stress on borosilicate glass 3.3.
What maintenance intervals are recommended for the PTFE-fluoroelastomer seals?

Under normal operation (≤8 h/day, non-aggressive solvents), seal replacement is recommended every 18 months or after 3000 operational hours—whichever occurs first—as verified by vacuum decay testing.
Does the instrument support remote calibration verification?

Temperature and rotation sensors are field-calibratable using NIST-traceable references; calibration coefficients may be uploaded via MODBUS register write commands following documented procedures in the technical manual.