Heat conduction oil boiler diesel burner emergency shutdown

(1) Normal shutdown of the furnace and temporary shutdown of the furnace, depending on the length of time. 1) Temporarily stop the furnace (stop the furnace for a short period of time). After pressing the fire with a little wet coal, open the furnace door, close the blast baffle and chimney baffle to keep the residual flame in the furnace; the chain grate continues to push the coal into the furnace for 5-10 minutes or about 400mm into the grate , Then turn off the blast and ventilation, and close the chimney damper to maintain the furnace temperature. Use thermal equipment to keep the circulating pump open by bypass, maintain the normal circulation of the thermal fluid, and avoid local overheating. When using the heat device to continue using the heat, the hand-burning grate opens the fire, closes the door, opens the explosion, chimney baffle, and resumes combustion. The chain grate first opens the flue baffle and the induced draft fan, and then turns on the blower to raise the temperature of the furnace, such as the temperature of the front arch after the grate is running, and the combustion resumes. 2) The furnace will be shut down for a long time (usually more than 8 hours). When the furnace needs to be shut down for more than 8 hours, due to the small hearth, the grate is hand-fired, the fan and flue baffle are turned off, and thick wet coal is used to press the red fire. Someone should stop the stove when on duty, keep it on fire, and don't let it go out. If the wet coal burns spontaneously, the wet coal must be re-pressurized. The chain grate stops the drum and the induced draft fan, thickens the coal seam and enters the grate 800~1200 mm. In winter, if the temperature is low and the furnace cools too fast, it can be properly opened and exploded when the furnace is closed. The wind and coal will ignite, and then some new coal will enter, and the fire cannot be broken. When the furnace stops and the oil circuit circulates, the circulating pump continues to work. When the thermal equipment is not hot, the bypass opens. When the outlet oil temperature drops below 100°C, turn off the circulating pump. When reusing the thermal equipment, the organic heat carrier furnace should first turn on the circulating pump to make the heat transfer fluid flow first, and then 'fire up' to resume combustion. If the oil temperature drops to 100°C or below, when the oil runs again, it cannot resume combustion as quickly as the furnace stops briefly, but the heating rate should be controlled to avoid local overheating. Check the shutdown operation (fire out) 1) The normal shutdown operation sequence of manual grate A) Gradually reduce the load, reduce the coal supply and air volume. When the load stops, stop the coal and air supply, and then stop the air persion. B) Close the furnace door, gray door and flue baffle to prevent the boiler diesel burner from cooling sharply. C) When the furnace body pressure gauge drops to zero and the temperature of the thermal fluid drops below 150°C, open the furnace door, ash door and flue baffle to enhance natural ventilation and cooling. D) The heat transfer fluid in the boiler diesel burner should be put into the storage tank, the heating pipe of the boiler diesel burner and other isolation measures, and then the inspection hole should be opened and cleaned with steam to remove scorch, dirt and impurities. 2) The normal stopping operation sequence of the chain grate A) Close the moon-shaped baffle of coal gangue and lower the coal gate to 30-50 mm to facilitate air circulation and avoid burning the gate. B) Reduce the speed of the grate and reduce the blowing and induced air. When the coal on the upper part of the grate is basically exhausted, turn off the blowing and induced air. C) Continue to rotate the grate to remove ash and slag. D) When the pressure drop of the furnace body is zero and the temperature of the heat transfer fluid drops below 70℃, put the heat transfer fluid into the oil storage tank, and the furnace body is reliably isolated from other furnace bodies. pipeline. Then open the inspection hole and clean with steam to remove scorch, dirt and impurities. 3) The normal operation of the type I coal stove is relatively simple. Stop adding coal, close the smoke baffle, and reduce combustion until it catches fire. Precautions for normal shutdown operation 1) In the operation of the liquid-phase organic heat carrier furnace, special attention should be paid to the coking and deterioration of the heat carrier due to improper overheating. Therefore, the heating furnace should be stopped without stopping the pump, and the circulating pump should be operated until the oil temperature drops below 70°C. 2) If the furnace is suspended for a long time, please pay attention to the ventilation of the grate to avoid burning the grate. (Ii) Emergency shutdown In any case, the emergency shutdown personnel encounter one of the following situations, they have the right to take emergency shutdown measures immediately and report to the relevant departments in time. 1) When the outlet temperature exceeds the allowable value, the temperature continues to rise due to the overheating alarm. 2) All pressure gauges and thermometers fail, and the liquid level of the level gauge fluctuates violently. Although measures were taken, it was still unable to return to normal. 3) When there are bulges, deformations, cracks and other defects in the pressured parts of the furnace, safety is seriously threatened. 4) When all circulating pumps are damaged and unable to operate. 5) When the valve of the pipeline ruptures and the filler on the flange joint surface rushes out, a large amount of thermal fluid leaks. 6) Nearby fires or other accidents directly threaten the safe operation of the heat carrier furnace. Operation steps for emergency shutdown: 1) Extinguish the red fire of the manual burner with water; the chain grate swings the coal door arc, the grate is fast, the coal in the furnace is quickly exhausted, and the blowing is stopped; the model coal stove will all the model coal carts out of the furnace and open The front and rear furnace doors cool the furnace temperature. 2) Turn off the circulating pump. 3) Open the oil valve, inject all the heat transfer fluid in the system into the oil storage tank, then cut off the contact between the boiler diesel burner and other equipment, close the inlet and outlet valves; 4) Open the furnace door, look at the fire door and chimney baffle , To accelerate the natural ventilation of the furnace cooling. Take precautions for emergency stop operation during emergency stop operation, keep calm, find out the cause first, and then take measures to direct the cause. During emergency shutdown operations, care should be taken to prevent burns. ! 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