Great Wall R-1020EX Explosion-Proof Rotary Evaporator

Overview

The Great Wall R-1020EX Explosion-Proof Rotary Evaporator is an industrial-grade solvent removal and concentration system engineered for safe, scalable, and reproducible operation in hazardous environments where flammable vapors—such as those generated during ethanol, acetone, diethyl ether, or hydrocarbon-based extractions—are present. It operates on the principle of reduced-pressure distillation: a rotating evaporation flask increases surface area and promotes uniform thin-film formation under controlled heating and vacuum, thereby accelerating solvent volatilization while minimizing thermal degradation of heat-sensitive compounds. Its certified explosion-proof design conforms to GB 3836.1–2021 (equivalent to IEC 60079-0) for Class II A/B/C T4 temperature classification, with integrated flameproof enclosures for all electrical components—including the control cabinet, motor driver, and temperature controller—ensuring compliance with intrinsic safety requirements for Zone 1/2 classified laboratories and pilot-scale production facilities.

Key Features

• Explosion-proof architecture validated per national standard GB 3836 series, featuring a dedicated flameproof control cabinet (IP65-rated) with isolated power input, intrinsically safe signal wiring, and redundant thermal cutoffs.
• 20 L high-capacity evaporation flask with Φ125 mm ISO-KF flange interface, enabling rapid batch processing and compatibility with large-scale extraction workflows.
• Dual-stage vertical condenser system comprising primary (0.948 m²) and secondary (0.458 m²) cooling surfaces, utilizing triple-reflux tube geometry to maximize condensation efficiency across wide-boiling-point solvent mixtures.
• Precision temperature control (±1.5°C) over 5–95°C range via PID-regulated 6 kW SUS304 heating bath, with real-time digital display and overtemperature fail-safe shutdown.
• Frequency-controlled rotation drive (20–130 rpm) delivering stable torque at low speeds and smooth acceleration profiles—critical for viscous or foaming samples.
• PTFE/FKM-PTFE composite dual-seal system at all critical vacuum interfaces, ensuring long-term leak integrity and resistance to aggressive organic solvents and acidic vapors.
• Manual lift mechanism (0–190 mm stroke) with mechanical lock, facilitating safe flask loading/unloading without compromising vacuum stability or operator exposure.

Sample Compatibility & Compliance

The R-1020EX accommodates a broad spectrum of sample matrices, including crude plant extracts, polymer solutions, pharmaceutical intermediates, petrochemical fractions, and battery electrolyte formulations. Its stainless steel (SUS304) bath and PTFE-wetted components ensure chemical compatibility with polar protic solvents (e.g., methanol, water), aprotic solvents (e.g., THF, DMF), and halogenated media (e.g., chloroform, dichloromethane). The system meets structural and operational requirements for GLP-compliant laboratories and supports audit-ready documentation when integrated with validated vacuum pumps and chillers. While not inherently 21 CFR Part 11 compliant, its analog/digital hybrid control architecture allows integration into validated data acquisition systems via optional 4–20 mA or RS485 output modules.

Software & Data Management

The R-1020EX utilizes a standalone microprocessor-based controller with dual digital displays for real-time monitoring of bath temperature and rotational speed. Although it does not include embedded PC software or cloud connectivity, its modular electrical design permits third-party integration with SCADA platforms or LIMS via analog signal outputs and relay-status feedback. All safety interlocks—including ground fault detection, current overload protection, and thermal runaway mitigation—are logged internally with timestamped event flags accessible through service mode diagnostics. For regulated environments, users may deploy external validation protocols aligned with ISO/IEC 17025 calibration frameworks, particularly for temperature sensor traceability (NIST-traceable Pt100 probe) and vacuum transducer verification.

Applications

• Concentration of natural product extracts under mild conditions to preserve terpenes, alkaloids, and polyphenols.
• Removal of residual solvents from active pharmaceutical ingredients (APIs) prior to lyophilization or crystallization—aligned with ICH Q3C guidelines.
• Recovery and recycling of high-purity solvents in fine chemical synthesis workflows.
• Distillative fractionation of multi-component reaction mixtures in process R&D labs handling Class B flammable materials.
• Preparative-scale dehydration of hygroscopic polymers and battery cathode slurries in inert-atmosphere glovebox-adjacent setups.

FAQ

What explosion-proof certification does the R-1020EX hold?
It complies with GB 3836.1–2021 (IEC 60079-0 equivalent) for flameproof enclosure “d” type, rated for Group II A/B/C gases and T4 temperature class (surface temp ≤135°C).
Can the system achieve <100 Pa vacuum?
Yes—when paired with a two-stage oil-sealed rotary vane pump or dry scroll vacuum pump meeting ISO 21360 standards, ultimate pressure reaches ≤100 Pa.
Is the condenser cooled by circulating chiller only, or does it support dry ice/acetone?
The dual-stage condenser is designed for continuous recirculating coolant (e.g., ethylene glycol/water) at −20°C to +10°C; dry ice traps are not supported due to thermal shock risk to glass joints.
What maintenance intervals are recommended for long-term reliability?
Vacuum seal inspection every 200 operating hours; PTFE gasket replacement annually or after 500 cycles; bath fluid level check before each use; motor bearing lubrication per OEM service manual (every 2,000 hours).
Does the unit support automated distillation sequences?
No—this is a manually operated, non-programmable system. Automation requires external PLC integration via its analog I/O interface and safety relay bank.