Oil-fired boiler operating procedures

General provisions 1. The boiler should check whether the boiler fuel system is in good condition and whether the safety device is effective before operation. 2. Operators must strictly abide by the relevant regulations in the "Coal-fired Boiler" safe operation regulations. Boiler system 1. Before starting a fire in a cold furnace, check whether there is oil accumulation in the furnace, and check the nozzles and air distributors. If there is a problem, it should be solved before starting the fire. 2. Before starting the boiler fire, the induced draft fan and blower should be started to keep the furnace negative pressure at 49 to 98 kPa. The furnace and flue ventilation should be carried out for more than 5 minutes to eliminate flammable gases to prevent explosion during ignition. 3． When igniting, the fire should be given first and then the oil. When opening the oil valve, the oil valve should be opened small first, and then the air valve should be opened after the fire is ignited, and then adjusted. If it fails to catch fire immediately after fuel injection, the oil valve should be closed quickly to stop fuel injection. After the cause is found out, ventilate the furnace for 5 to 10 minutes and discharge the combustible fuel gas in the furnace before igniting. 4． After the boiler is ignited, the circulating water pump can be started only when the water temperature reaches 40 to 50°C. 5. During the fire-raising process, the furnace firemen should strengthen monitoring and deal with the flameout in time to prevent the furnace from exploding. 6. After igniting, pay attention to adjusting the center of the flame. It should not be deflected or too high. It should be centered in the furnace and evenly distributed. 7. When shutting down the furnace, rapid cooling should be prevented. After stopping the oil supply, the blower should be stopped first, then the induced draft fan, and then the smoke and air duct baffles should be closed. 8. When the furnace is shut down due to an accident, the oil valve should be closed immediately and the oil supply should be stopped. 9. Do a good job in the maintenance of equipment and instruments, and always keep everything neat and clean. If water leakage, steam leakage, oil leakage or unsanitary conditions are discovered, the shift will not be completed. Water supply system 1. The water quality is qualified and when the sub-cylinder pressure is lower than 0.3 MPa, demineralized water should be added until the water supply is stopped at 0.5 MPa. When the water quality is not up to standard, water cannot be replenished. Replenishing tap water is strictly prohibited. 2. Try the backup water system once a day to ensure reliable water supply during power outages. Oil supply system 1. When the valve switch position is normal, the oil pump can rotate freely by hand, the oil circuit is smooth, and the oil temperature is between 60 and 80°C, the oil pump is allowed to be started. It is strictly prohibited to start when the oil pump and pipeline are solidified. 2. Before starting the oil pump, the relief valve should be opened first. After the oil pump is oiled, the relief valve should be slowly adjusted to reach the required pressure. Generally controlled at around 588 to 784 kPa. It is strictly prohibited to start the oil pump when the relief valve is closed to ensure that the oil supply system does not leak oil. 3． The oil pump is rotated every shift. The filter in front of the pump should be cleaned and flushed once a week. The filter in front of the furnace is rotated once per shift and cleaned once a week. 4． The oil temperature in front of the furnace should be controlled above 80℃, preferably above 100℃, and below 80℃ indicates unqualified combustion. 5. When an instrument valve fails, the bypass valve should be opened immediately. 6. In order to prevent the fuel oil from condensing in front of the furnace, the pipes should be heated and purged with steam before sending the oil. 7. After shutting down the furnace, the furnace oil pipes should be purged immediately with steam to prevent the remaining oil from condensing. The blowing system rotates the blower every 4 hours, and adjusts the pressure and air volume reasonably according to the combustion conditions.

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