The safe operation of heat transfer oil dehydration is an important step to ensure the normal operation of the heat transfer oil system. The following are detailed operating procedures:

1、 Preparation before operation

1. Material preparation: thermal oil, desiccant (such as activated carbon or other specialized desiccants), deoxidizer, dehydrator, etc. All materials should undergo quality inspection and be strictly proportioned according to regulations.

2. Equipment inspection:

Check if the dehydration and degassing system is working properly.

Check if all valves and pipelines are unobstructed, and if ventilation facilities are functioning properly.

Check for any leaks in the equipment and maintain a clean environment.

3. Safety measures:

Staff should wear protective clothing, earplugs, gloves, and other protective equipment.

Emergency stop switches and fire extinguishers should be equipped next to the machine.

2、 Operation process

1. Dehydration:

Heat the heat transfer oil to a temperature range of 100-110 ℃ to begin dehydration. At this time, there will be significant fluctuations in the pressure of the circulation pump, and gas will be discharged from the exhaust pipe at the top of the expansion tank.

Maintain a constant temperature until the pressure stabilizes, then slowly raise the temperature by 3-5 ℃ to continue maintaining the constant temperature. After observing the pressure stabilize, slowly raise the temperature by 3-5 ℃ to continue dehydration.

Repeat the above operation until the temperature reaches 150 ℃ and the pressure stabilizes, and dehydration is complete. Be careful not to attempt to accelerate the dehydration process with rapid heating, as this may cause oil spray in the expansion tank.

2. Degassing (if applicable):

After dehydration, if further degassing is required, the heat transfer oil can be heated to a temperature range of 170 ℃ -180 ℃ to begin removing light components.

Maintain a constant temperature until the pressure stabilizes, then slowly raise the temperature by 3-5 ℃ to continue maintaining the constant temperature. After observing the pressure stabilize, slowly raise the temperature by 3-5 ℃ to continue degassing.

Repeat the above operation until the temperature reaches 250 ℃ and the pressure stabilizes, then continue to heat up to the required temperature for the production process.

3、 Operation precautions

1. Strictly control the heating rate to prevent sudden boiling of the heat transfer oil, which may cause oil overflow in the expansion tank and oil storage tank.

2. Pay attention to the pressure changes at the inlet and outlet of the oil furnace, as well as the liquid level in the high-level tank, and promptly replenish the heat transfer oil to the high-level tank.

3. Keep records of cooking oil, including operating time, temperature, pressure, and other parameters at each stage, and report to relevant personnel for future reference.

4. Smoking, use of open flames, and unrelated operations are strictly prohibited to ensure good ventilation in the venue.

5. In case of an emergency, immediately turn off the emergency stop switch and use a fire extinguisher to extinguish the fire.

4、 Operation completion and cleaning

After the operation is completed, all valves of the dehydration and degassing system should be closed and the equipment should be thoroughly cleaned.

2. It is strictly prohibited to dump waste materials, liquids, etc. into the natural environment, and they should be handled by a professional company.

By following the above steps and precautions, the safety and effectiveness of the dehydration operation of the heat transfer oil can be ensured, ensuring the normal operation of the heat transfer oil system.

Diphenyl ether manufacturer