Great Wall R-1050EX Explosion-Proof Rotary Evaporator

Overview

The Great Wall R-1050EX Explosion-Proof Rotary Evaporator is an industrial-grade solvent removal and concentration system engineered for safe operation in hazardous environments where flammable vapors—such as those generated during ethanol, acetone, diethyl ether, or hydrocarbon-based extractions—may accumulate. Designed in accordance with IEC 60079-0 and GB 3836.1–2010 standards for explosion protection, the R-1050EX integrates a certified Ex d IIB T4 explosion-proof electrical control cabinet, intrinsically isolated motor drive circuitry, and dual-material sealing (PTFE + FKM-PTFE composite) to prevent ignition sources from contacting volatile atmospheres. Its core operational principle relies on simultaneous rotation, controlled heating, and vacuum-assisted evaporation: the 50 L rotating flask rotates within a thermostatically regulated SUS304 water/oil bath while under reduced pressure, increasing surface area exposure and lowering boiling points—thereby enabling efficient, low-temperature solvent recovery with minimal thermal degradation of heat-sensitive compounds. The system is intended for continuous-duty laboratory and pilot-scale purification workflows requiring compliance with OSHA 1910.106, ATEX Zone 1/2, and NFPA 497 classification frameworks.

Key Features

• Explosion-proof architecture compliant with Class I, Division 1 / Zone 1 hazardous location requirements, validated via third-party certification (certificate number traceable upon request)
• High-capacity 50 L borosilicate glass rotating flask with Φ125 mm standard taper joint and reinforced PTFE-coated stopcock for inert, leak-tight operation
• Dual-stage condensation system: vertical primary condenser (1.150 m² surface area) paired with auxiliary secondary condenser (0.607 m²), both equipped with triple-pass reflux tubing to maximize condensate recovery efficiency
• Precision temperature control (±1.5°C) across 5–95°C range using PID-regulated 6 kW heating bath with real-time digital display and overtemperature cutoff
• Variable-speed AC frequency drive (20–110 rpm) delivering consistent torque at low speeds and stable rotational inertia at high loads
• Manual lift mechanism with 180 mm vertical travel, engineered for smooth load balancing and repeatable positioning under full flask weight
• Integrated safety interlocks: ground-fault detection, thermal cutout at 110°C, and current-limiting circuitry preventing motor stall damage

Sample Compatibility & Compliance

The R-1050EX accommodates a broad spectrum of organic solvents—including polar protic (e.g., methanol, ethanol), polar aprotic (e.g., THF, DMF), and nonpolar media (e.g., hexane, toluene)—without compromising seal integrity or thermal stability. All wetted parts are constructed from chemically resistant materials: borosilicate 3.3 glass, PTFE, FKM-PTFE composites, and electropolished SUS304 stainless steel. The system supports GLP-compliant documentation when integrated with external data loggers; its analog voltage outputs (0–10 V) for temperature and speed enable traceable parameter recording per FDA 21 CFR Part 11 requirements. While not inherently 21 CFR Part 11–certified, the R-1050EX’s hardware design permits validation-ready integration into GMP-controlled environments when deployed with qualified software platforms and audit-trail-enabled controllers.

Software & Data Management

The R-1050EX operates via a dedicated explosion-proof control panel featuring dual digital displays for real-time monitoring of bath temperature and rotational speed. Though it does not include embedded PC-based software, all analog outputs (temperature, speed, vacuum status) are compatible with industry-standard SCADA systems (e.g., Siemens Desigo, LabVIEW DAQmx) and programmable logic controllers (PLCs). Optional RS-485 Modbus RTU interface modules can be retrofitted for centralized supervisory control, remote setpoint adjustment, and event logging—supporting ISO/IEC 17025 traceability protocols when paired with calibrated external sensors and time-stamped acquisition systems.

Applications

• Concentration of natural product extracts (e.g., botanical oils, alkaloid fractions) under reduced thermal stress
• Solvent exchange and residue removal in pharmaceutical intermediate synthesis (API purification steps)
• Recovery and recycling of high-purity solvents in fine chemical manufacturing
• Removal of volatile reaction byproducts during Grignard, lithiation, or hydrogenation processes
• Preparative-scale dehydration of hygroscopic compounds prior to lyophilization or crystallization
• Compliance-driven evaporation in petrochemical QC labs handling gasoline-range hydrocarbons or refinery distillates

FAQ

What explosion protection standard does the R-1050EX meet?

It conforms to GB 3836.1–2010 (Chinese national standard equivalent to IEC 60079-0) for flameproof enclosure “d” type, rated Ex d IIB T4, suitable for Group IIB gases including ethylene and acetone vapor.

Can the R-1050EX achieve vacuum levels below 1 kPa?

Yes—while the built-in vacuum monitoring indicates ≤2 kPa/h rise rate, pairing the unit with a certified explosion-proof vacuum pump (e.g., KNF NRP series with Ex rating) enables stable operation down to 100 Pa.

Is the 50 L rotating flask supplied with standardized joints?

Yes—the flask features a DIN 29, ISO 228/1 Φ125 mm ground-glass joint with matching PTFE stopcock and clamping collar for universal compatibility with Great Wall and other ISO-conforming condensers and adapters.

Does the system support automated distillation sequencing?

Not natively—but its analog I/O signals allow seamless integration with external programmable timers or PLCs to sequence temperature ramps, speed profiles, and lift actuation per SOP-defined protocols.

What maintenance intervals are recommended for long-term reliability?

Inspect PTFE/FKM seals every 500 operating hours; recalibrate bath temperature sensor annually using NIST-traceable reference thermometers; verify vacuum integrity quarterly via helium leak testing per ASTM E499.