What are the matters needing attention in thermal oil reactor? What should be paid attention to in long-term use of reactor?

### Precautions for Stainless Steel and Thermal Oil Reactors

#### **Thermal Oil Reactors**

Thermal oil reactors use thermal oil for heating, with the oil quantity in the interlayer adjusted based on reactor size. Steam from a boiler heats the oil to maintain a constant temperature. Key precautions include:

1. **Prevent Contamination:** Ensure no water, acids, alkalis, or impurities mix with the thermal oil during operation.

2. **Initial Cleaning:** Remove installation-related impurities and rust particles before first use to maintain heat transfer efficiency and oil lifespan.

3. **High-Temperature Gaskets:** Use appropriate gaskets in the heating system to prevent oil leakage.

4. **Heating Rate:** Avoid rapid heating. Increase temperature gradually (≤20°C/hour) and hold at 105–120°C and 180–200°C to remove light components effectively.

5. **Oil Monitoring:** If oil shows signs of wear (e.g., discoloration), stop heating, test the oil, and replace or replenish as needed.

#### **Stainless Steel Reactors**

Although durable, stainless steel reactors may develop minor issues over time. Precautions include:

1. **Component Replacement:** Loosen main bolts and nuts to disassemble components like paddles, baffles, and guide tubes. Avoid striking parts with a hammer to protect assembly accuracy.

2. **Agitator Maintenance:** Use the oiling hole to grease bearings after depressurizing the reactor. Add 30–50°C grease with a syringe.

3. **Disassembly Safety:** Drain reaction materials and clean the reactor with a harmless medium before disassembly to prevent injuries.

4. **Agitator Inspection:** Loosen nuts on the reactor lid to remove the agitator driver without opening the lid. Minimize impurity entry during disassembly.

5. **Installation Care:** Tighten bolts symmetrically in increments to avoid skewing and damaging gaskets, ensuring proper sealing.

6. **Lower Agitator Shaft:** Check for oscillation regularly. Replace bearings and bushings if excessive oscillation occurs.

#### **Temperature Control Device**

A reactor temperature control device includes:

- **Temperature Sensors and Solenoid Valves:** Connected to the heat source and cooling water pipes for automated temperature regulation.

- **Water Receiving Tube:** Located at the reactor's bottom, connected to a solenoid valve for efficient cooling.

This system reduces manual labor, ensuring precise and convenient temperature control.