Detailed explanation of the operation process of the regenerative combustion system of the aluminum melting furnace

1. Preparatory work that must be done before operation

1. Carefully read the “Regenerative Aluminum Melting Furnace Automatic Combustion Control System Operation Manual” to understand the names, functions and functions of the components, and to be clear about the functions of the buttons on the control cabinet panel and touch screen. Remember: at any time, when the ignition is started, be sure to open the furnace door!

2. Through the touch screen “parameter setting”, adjust various operating parameters to appropriate data.

3. Keep the cooling fan always on until the furnace temperature is lower than 750°C.

Operation Process of Regenerative Combustion System of Aluminum Melting Furnace

2. Operation process of cold furnace operation (furnace temperature is below 900℃)

1. Open the furnace door more than 60% opening; turn on the cooling fan; turn on 90% of the combustion-supporting fan; turn on the 90% induced draft fan; turn on the gas main valve; adjust the 1# gas manual valve to 50% opening; adjust the 2# gas manual valve To 50% opening.

2. On the touch screen “manual operation” interface, start 1# ignition gun operation and check its fire detection status; start 2# ignition gun operation and check its fire detection status; confirm that all the fire detection signals are in place and stable, and observe with naked eyes To the flame open flame. If the fire detection signal is not in place, please adjust the opening of the ignition gas manual ball valve until the fire detection signal is stable.

3. Start the “automatic operation” mode, and closely observe whether the 1# Dahuo and 2# Dahuo reversing single guns are burning normally; closely observe the furnace temperature operating data, and gradually increase the opening of the 1# gas manual valve and 2# gas manual valve. Until the opening is about 90%. After the system runs normally for at least six cycles, and the furnace temperature is gradually rising, adjust the opening of the furnace door to about 15% to let the system run automatically. After 45 minutes of normal operation, when the furnace temperature reaches 900 degrees or more, the furnace door can be closed for operation.

4. When there is a fire detection alarm in the middle of the operation, just touch the “alarm reset” button to eliminate the alarm. Before re-igniting operation, be sure to open the furnace door to ignite. After confirming the normal operation, the furnace door can be closed for operation.

5. After the furnace temperature exceeds the fire stop temperature, the 1# gas manual valve and 2# gas manual valve can be adjusted to 50% opening. On the one hand, it prepares for the furnace down, and on the other hand, it does not require much fuel for furnace insulation.

3. The operation process of the hot furnace (the furnace temperature is above 900℃)

1. Under the premise that the furnace temperature is above 900℃ and the furnace wall is red, the “automatic operation” mode can be started.

2. After adding the cold material, if the furnace temperature is lower than the “ignition stop” temperature, you must first open the furnace door more than 60% opening, then start the “automatic operation” mode, and closely observe the reversal of 1#大火 and 2#大火Is it normal for a single gun to burn? After confirming that the gas can spontaneously ignite when sprayed into the furnace, the furnace door can be closed for operation.

3. Send someone to guard the furnace. Once the system has an emergency, you can press the emergency stop button immediately, and the system will immediately stop running.

4, the system shutdown operation process

Turn off the “automatic operation” mode, turn off the blower and the induced draft fan, remember to turn off the gas main valve, 1# gas manual valve and 2# gas manual valve, but not the cooling fan, because the furnace temperature is high; there is no need to close the ignition gas valve.

5, system equipment maintenance

1. After each furnace is running, carefully take out the ignition gun, clean up the dust on the ignition gun head, and maintain a good ignition state.

2. Check the operation status of four pneumatic reversing valves, three fans, and four gas solenoid valves every day.

3. Clean the dust in the dust room every week. Check the dust collection condition of the heat storage ball and the burnt condition of the main gun sheath once a month.