Operation and maintenance procedures of heating furnace
1. Use the equipment with "operation certificate"
2. Before ignition:
2.1 check whether the furnace body, furnace shell, brickwork and other main parts are in good condition. After confirming that they are in good condition and free of serious defects, carry out the following work.
2.1.1 check whether the natural gas pressure is normal (no less than 4mm mercury as required).
2.1.2 check the nozzle of natural gas valve and flue ram to make sure they are in normal condition, and the flue is smooth and free of water.
2.1.3 pay special attention to whether the natural gas valve is tightly closed before ignition. At the same time, check the pipe joint with soapy water and open the bulk valve.
2.1.4 adjust the flue gate to maintain a certain suction in the furnace.
2.1.5 when the newly built or overhauled furnace is baked, the temperature shall not be increased or decreased sharply, and the temperature shall be increased, maintained and decreased according to the specified temperature rise curve.
3. point furnace:
3.1 close the nozzle regulator, air pipe valve and vent valve.
3.1.2 ignite the oil immersion torch and aim it at the outlet of the natural gas burner.
3.1.3 slowly open the natural gas burner valve, take out the torch after the fire, and adjust the air volume until the natural gas combustion is normal.
3.1.4 if the above-mentioned operation point is not on fire, take out the torch quickly, close the natural gas valve, wait for the furnace to ventilate for 5 minutes, and focus on the above sequence. If the second time is still not on fire, find out the cause and deal with it before starting the furnace again.
3.5 it is necessary to set off the torch before opening the natural gas valve. It is strictly prohibited to open the natural gas valve first, and then ignite the fire with a torch, otherwise it is easy to cause explosion and accident.
