Principles of Operation
The reactor utilizes magnetic attraction/repulsion to rotate the stirrer, while the heating system—via a temperature control panel—maintains precise thermal conditions. This non-contact stirring minimizes contamination risks, making it ideal for sensitive experiments.
Step-by-Step Installation Guide
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Transport & Positioning:
- Avoid impact to the magnetic stirrer on the reactor cover during handling.
- Ensure the installation site is level and vibration-free.
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Environmental Requirements:
- Operate in a well-ventilated area compliant with explosion-proof standards.
- Maintain ambient temperature between 10–30°C for optimal performance.
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Seal Selection:
- Choose gaskets matching the reaction medium, design pressure (e.g., 1–10 bar), and temperature (-20–200°C).
- Common materials: PTFE for corrosive media, metal spiral wound gaskets for high pressure.
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Reducer Lubrication:
- Fill the reducer oil tank with No.13 compressor oil or No.11 cylinder oil.
- Maintain oil level at the marked line; replace oil every 6 months or 1,000 operating hours.
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Cooling System Setup:
- Connect the magnetic stirrer's cooling jacket to a separate water source (inlet at the bottom, outlet at the top).
- Ensure cooling water does not flow through the reactor's internal cooling coil into the stirrer jacket.
- Maintain water pressure at 0.1–0.3 MPa and temperature ≤25°C.
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Electrical System Placement:
- Locate the control cabinet and variable frequency drive in a dry, ventilated electrical room.
- Ensure grounding resistance <4Ω for safety.
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Valve Operation:
- Close valves gently to prevent damage to sealing surfaces.
- Use needle valves for precise flow control; avoid sudden opening/closing of ball valves.
Operational Best Practices
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Pre-Startup Checks:
- Verify gasket tightness and stirrer rotation (manually turn the shaft to check for obstructions).
- Confirm cooling water flow and electrical connections.
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Startup Sequence:
- Activate the cooling system first, then power on the reactor.
- Gradually increase stirring speed (start at 50 RPM, then adjust to target speed ≤1,500 RPM).
- For heating, set temperature in 10°C increments to avoid thermal shock.
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Running Monitoring:
- Track pressure (should not exceed design pressure), temperature (±2°C accuracy), and stirrer noise.
- Record operational data every 30 minutes for traceability.
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Shutdown Procedures:
- Stop heating and allow the reactor to cool to ≤50°C before reducing stirring speed to zero.
- Turn off the cooling system last to prevent condensation.
Maintenance Tips
- Bearing & Bush Replacement:
Replace immediately if unusual friction or vibration occurs (indicative of excessive wear clearance).
- Periodic Inspections:
- Monthly: Check gasket condition and lubricant quality.
- Quarterly: Calibrate temperature/pressure sensors.
- Annually: Perform pressure testing (1.25x design pressure for 30 minutes).