Adjust the fire of industrial burners

How to adjust the fire of industrial burners?

The way to adjust the intake air size of industrial burners is to open and adjust the pressure or install a throttle valve to control it. Let’s talk about how to adjust the fire of the Riello burner.
① Remove the overpressure switch and explosion-proof pin on the explosion-proof port, take out the medium temperature sensor, and take out the overtemperature switch. the
②Set the vacuum target on the display screen to 25Kpa, and the vacuum switch to 20Kpa. the
③ Put the flue gas shut-off valve on the chimney in the open state, and put the gas ball valve in the open state. the
④ Exhaust the air through the release pipe on the gas pipe, and close the release valve until you smell the gas. the
⑤ Install the portable pressure gauge on the pressure measuring point at the inlet end of the valve group. the
⑥ Adjust the lower gas pressure switch and air pressure switch to a smaller scale, open the burner to observe the gas butterfly valve (the gas butterfly valve should be rotated to 90° when the burner is pre-blowing on a high fire, and the gas butterfly valve is generally at 25° during pre-blowing on a low fire. °-30°). If not, the burner should be stopped first, and then completed by adjusting the servo motor. the
⑦Turn the pressure adjustment screw on the valve group to a larger opening, and turn on the burner for initial combustion. It is possible that the first two combustions will fail, because the gas may be impure or the damper is too large, and the gas volume is small. the
⑧After the initial combustion is successful, keep the burner burning on a low fire, and check the flow rate and adjust the flow rate (under normal circumstances, the flow rate on a low fire is about 1/3 of the gas consumption per hour of full load). After adjusting the flow rate of the small fire, switch to the high fire for combustion, and check and adjust the flow (the flow rate of the high fire is the full-load hourly air consumption of the unit). the
⑨ After the flow rate is adjusted, turn the burner to low fire and high fire respectively, and adjust the damper size according to the measured value on the oxygen content instrument (under normal conditions, the oxygen content of flue gas after low fire combustion is 5%, and after high fire combustion The oxygen content of flue gas is about 3%), adjust the damper to the ideal position. the
Let the burner run at the low fire position, turn the air pressure switch clockwise until the burner is positive, then turn the dial 20% counterclockwise, turn it on again and ensure that it works normally. If you are still sure, please turn the dial counterclockwise a little until normal operation stops.www.burners-china.com