In modern chemical, pharmaceutical, and materials science research, scientists are often challenged by reactions that require high temperature, high pressure, and strong corrosion resistance. Traditional reactors frequently struggle with leakage, mechanical wear, or insufficient control over reaction conditions.
This is where the High-Pressure Vessel becomes indispensable. Designed for laboratory-scale research, catalyst screening, and process optimization, it offers a safe, precise, and leak-free solution for demanding reactions.
At Nanjing Hjchem Equipment Co.,Ltd., we specialize in manufacturing advanced micro high-pressure reactors that meet the strictest safety and performance requirements, helping researchers and engineers achieve reproducible results with minimal risk.
Core Components and Their Functions
1. Reactor Vessel and Sealing System
Materials: Typically stainless steel (316L), Hastelloy, or titanium alloy with polished inner surfaces for corrosion resistance and reduced material adhesion.
Threaded Sealing: Reactor cover and body are tightly locked with precision threads, supported by metal gaskets (copper, aluminum) or corrosion-resistant O-rings. Pressure tolerance: 10–30 MPa.
Magnetic Sealing: Internal and external magnetic rings transmit torque without direct contact, eliminating mechanical seal leakage—a must for toxic or volatile media.
2. Magnetic Stirring System
External Magnetic Rotor: Driven by a motor to generate a rotating magnetic field.
Internal Magnetic Rotor: Coupled with the external rotor through magnetic fields to drive the stirrer blades.
Key Advantage: Contactless torque transfer ensures zero leakage mixing, ideal for high-pressure, high-viscosity, or sensitive reactions.
3. Heating and Temperature Control System
Heating Methods:
Electric heating mantle for rapid heating (5–10°C/min, up to 400°C).
Oil bath or water jacket heating for stable and uniform temperature control (fluctuation ≤ ±1°C).
Temperature Sensors: Built-in thermocouples (K-type/J-type) combined with PID controllers ensure precision (±0.5°C).
4. Pressure Monitoring and Safety Devices
Pressure Sensors: Provide real-time monitoring with accuracy up to ±0.1 MPa.
Safety Features:
Burst disks rupture at preset limits to prevent explosions.
Safety valves automatically release pressure when thresholds are exceeded.
Working Principle and Reaction Process
1. Magnetic Coupling Transmission
The motor drives the external magnetic rotor, creating a magnetic field that penetrates the non-magnetic reactor wall. This, in turn, synchronizes the internal rotor and stirrer blades. Unlike traditional shaft seals, this no-contact system prevents leakage and is highly suitable for volatile solvents or high-pressure gases (H₂, CO, etc.).
2. High-Pressure Environment Formation
Sealing Mechanism: Threaded connections plus gasket compression prevent leaks.
Pressure Sources: Can result from internal gas generation (e.g., hydrogenation) or external supply via gas cylinders.
3. Temperature Regulation
Controlled heating through mantles or oil baths.
PID control ensures the target temperature is achieved and maintained.
Cooling is enabled by circulating water or ethanol solutions for fast or low-temperature reactions.
4. Typical Operation Workflow
Load reactants and catalysts, leaving ~20% headspace.
Tighten reactor cover, perform leak test with nitrogen.
Set parameters: temperature, stirring speed, and pressure.
Start heating and stirring while monitoring system data.
After the reaction, allow cooling, slowly release pressure, and safely open for sampling.
Key Advantages of Micro High-Pressure Magnetic Reactors
Leak-Free Design: Magnetic sealing eliminates mechanical seal wear and leakage.
Precision Control: Accurate regulation of temperature, pressure, and stirring speed.
Micro-Scale Efficiency: Requires only 10–500 mL, ideal for costly or rare reagents.
Parallel Testing: Multi-reactor designs enable simultaneous comparative experiments.
Enhanced Safety: Multiple protection systems (burst disks, safety valves) safeguard users.
Application Areas
Catalyst Mechanism Research: Improve accuracy by eliminating mass transfer resistance, combined with online spectroscopy.
Supercritical Fluid Reactions: Conduct experiments in supercritical CO₂ or ethanol for greener processes, e.g., nanoparticle synthesis.
Extreme Condition Simulation: Replicate mantle pressure (up to 50 MPa) or deep-sea conditions to study mineral formation or microbial metabolism.
Why Choose Nanjing Hjchem Equipment Co.,Ltd.?
With decades of expertise in high-pressure reactors, molecular distillation, glass reactors, and Nutsche filters, we provide customized solutions tailored to your laboratory and industrial needs.
Our reactors are designed for long service life, uncompromised safety, and reproducibility—enabling you to focus on scientific innovation, not equipment limitations.
Explore more at Nanjing Hjchem Equipment Co.,Ltd.
Call to Action
Looking for a reliable micro high-pressure magnetic reactor for your laboratory or pilot plant?
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