In modern chemical, pharmaceutical, and materials research, compact magnetic high pressure reactors have become indispensable. Designed for high-pressure, high-temperature, and corrosive environments, these systems combine magnetic coupling transmission with advanced sealing and intelligent temperature control. The result is a leak-free, safe, and efficient platform for catalytic reactions, nanomaterial synthesis, and supercritical fluid extraction.
At Nanjing Hjchem Equipment Co.,Ltd., we specialize in providing precision-engineered reactors that meet the needs of both laboratories and small-scale industrial applications.
Core System Design
1. Magnetic Coupling Transmission
Non-contact stirring: Torque is transmitted through magnetic fields, eliminating mechanical shaft seals and completely solving leakage problems.
Durable materials: Magnetic steels alloys withstand up to 300°C, with anti-demagnetization capacity.
Torque capacity: 0.1–10 N·m, customized to reactor volume.
Isolation sleeve: Made of 316L stainless steel or Hastelloy, wall thickness 3–5 mm, pressure resistance 10–20 MPa, with polished surface to minimize residue.
2. High Pressure Sealing Solutions
Bolt-preloaded sealing: High-strength bolts (35CrMoA) with stainless-steel + graphite spiral-wound gaskets ensure uniform compression.
Quick-clamp sealing (optional): Enables rapid opening/closing, ideal for frequent sampling.
Self-tightening seals: Utilize internal pressure to enhance sealing—perfect for >10 MPa operations.
3. Intelligent Temperature Control
Heating methods:
Electric heating mantle (1–3 kW, max 300°C, up to 2 L reactors).
Jacket circulation heating with thermal oil/steam, offering ±1°C uniformity for 5 L+ reactors.
PID smart control: Supports programmable heating (stepwise), with Pt100 RTD sensors offering ±0.5°C accuracy.
Key Configurations and Selection Guide
| Application Scenario | Recommended Volume | Design Pressure | Material | Impeller Type |
|---|---|---|---|---|
| Catalyst Screening | 100–500 mL | 5–10 MPa | 316L Stainless | Turbine (high shear) |
| Pharmaceutical Synthesis | 1–5 L | 10–15 MPa | Hastelloy C-276 | Anchor (anti-fouling) |
| Nanomaterial Hydrothermal | 500 mL–2 L | 3–5 MPa | Titanium Alloy | Paddle (low shear) |
| Supercritical Fluid Reaction | 2–5 L | 20–25 MPa | Nickel-based Alloy | Ribbon (axial mixing) |
Additional Features:
Online monitoring: Pressure sensors (±0.1 MPa), pH probes, and oxygen sensors with RS485 output.
Safety protection: Dual pressure relief (valve + rupture disc) with ≥10 L/s discharge rate.
Automation: Optional PLC integration for remote operation, alarms, and process automation.
Application Scenarios
1. Catalytic Hydrogenation
Configuration: 2 L reactor, 316L stainless steel, magnetic coupling (2 N·m torque).
Process: Material + Pd/C catalyst, nitrogen purging ×3, hydrogen charged to 5 MPa, heated to 120°C, stirred at 500 rpm for 4 hours.
Advantages: Absolute hydrogen leak prevention, precise temperature control, real-time monitoring.
2. Nanomaterial Hydrothermal Synthesis
Configuration: 500 mL titanium-alloy reactor, polished inner wall, anchor impeller.
Process: Ti precursor + template agent, sealed, 120°C, stirred at 200 rpm for 24 hours.
Advantages: Prevents particle agglomeration, reduces residue adhesion, saves raw material.
3. Supercritical CO₂ Extraction
Configuration: 5 L Hastelloy reactor, ribbon impeller, jacket temperature control.
Process: Plant material loaded, CO₂ charged to 20 MPa at 35°C, stirred at 100 rpm for 30 minutes, extract collected in separator.
Advantages: Hastelloy resists CO₂ corrosion, stirring improves extraction efficiency by 30%.
Maintenance and Safety Recommendations
Replace seals every 3–6 months depending on exposure.
Inspect magnetic couplers and clean surfaces regularly.
Calibrate sensors annually for reliable measurements.
Always follow stepwise depressurization (<0.5 MPa/min) to avoid safety risks.
Conclusion
Compact magnetic high pressure reactors deliver leak-free performance, precise control, and enhanced safety, making them ideal for advanced laboratory research and small-scale industrial processes.
Looking for the right reactor for your lab? Contact us today for a tailored solution: