Reasonable production operation process and safety production steps:

Reasonable production operation process and safety production steps:

Preparation before startup operation:

1. Check if the wiring of the electric heating tubes is correct. A total of 138 electric heating tubes are connected in 46 groups, with each group consisting of 3 tubes, using a triangular connection method.

2. Check if the connection at the wiring end of the explosion-proof electric heater is secure to prevent loosening and ignition.

3. Check if the three-phase resistance of the electric heating core is balanced. If it is unbalanced, the cause of the fault must be promptly identified.

4. Check whether the electric heating tube is insulated from the ground. If the insulation to the ground is not qualified, it is not allowed to heat with electricity.

5. Check whether the installation of the electrical control system and instruments meets the requirements, that is, whether the display, sensors, and instruments of each alarm device and control system correspond to the requirements of process heating.

6. Check whether the blind plate for pressure testing in the pipeline system has been removed, whether the opening and closing of various valves are flexible and reliable, whether the fasteners are tightened, and whether the sealing is tight; Perform a pressure test on the system pipeline until the outlet pressure fluctuates steadily and there are no leakage points in the system.

Safety production steps:

After passing the inspection, the potentiometer in the operating room (or the potentiometer in the remote control box) should be lowered counterclockwise to zero, and the electrician should start the power supply. The instrument indication should be zero.

2. Afterwards, the operator can slowly adjust clockwise, adjusting every 10 minutes, with a current of 5-10V and 20-30A each time. The heating rate should be controlled at 20 ℃/h.

3. The operation should be carried out under safe gas flow, increasing the gas flow first and then increasing the power of the explosion-proof electric heater; When the explosion-proof electric heater is shut down, first reduce its power and continue for 15-30 minutes, then reduce the gas flow rate.

4. Oven requirements: When the output voltage is adjusted to 100V, maintain a constant temperature for 2 hours; When the output voltage is adjusted to 200V, maintain a constant temperature for 4 hours; When the output voltage is adjusted to 300V, maintain a constant temperature for 2 hours.

5. During equipment operation, if there is a sudden power outage or emergency situation, the potentiometer should be lowered to zero to prevent sudden power calls; Otherwise, high current impact on the electric heater will cause equipment burnout.

6. In case of sudden severe current imbalance or no current indication causing tripping during use, the power should be cut off, the cause should be identified, and the fault should be eliminated before reuse.

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