Emergency plan for heat conduction oil boiler diesel burner

Heat-conducting oil boiler diesel burner is the most popular type of boiler diesel burner, which burns with other types of boiler diesel Compared with the machine, it has higher environmental protection and applicability. As long as it is properly implemented in terms of operation and maintenance, its safety factor will be much higher than that of traditional boiler diesel burners. However, due to many factors, the thermal oil boiler diesel combustion engine will still encounter some emergency situations. If it is not properly disposed of, it will pose a threat to personal and property safety. So let's briefly explain below. Common accidents of heat-conducting oil boiler diesel burner 1. Full water accident 　　 concept: The phenomenon that the water level of the boiler diesel burner is higher than the maximum safe water level scale of the water level gauge is called the boiler diesel burner full of water. When the boiler diesel burner is full of water, the water level in the water level gauge is often not visible, but the gauge is dark, which is an important difference between full water and lack of water. After the occurrence of full water, the high water level alarm will act and give an alarm, the temperature of the superheated steam will decrease, and the feed water flow will be abnormally greater than the steam flow. When severely full of water, the pot water can enter the steam pipe and superheater, causing water hammer and superheater scaling. Therefore, the main hazard of full water is to reduce the steam quality, damage and even destroy the superheater. Common causes of full water: 　　 1. The operator is negligent, does not monitor the water level strictly, or the operator leaves his duty without authorization, and abandons the monitoring of the water level and other instruments; 　　 2. The water level gauge fault causes a false water level and the operator fails to discover it in time ;　　3. The water level alarm and the automatic water supply regulator failed and failed to be discovered in time. How to deal with the full water of the boiler diesel combustion engine: After the boiler diesel combustion engine is found to be full of water, the water level gauge should be flushed to check whether the water level gauge is faulty; once the water is confirmed to be full, the water supply valve should be closed immediately to stop the water supply to the boiler diesel combustion engine, and start The economizer recirculation pipeline, weaken the combustion, open the drain valve and the traps on the superheater and steam pipeline; when the water level returns to normal, close the drain valve and all traps; find out the cause of the accident and eliminate it, and resume normal operation . If water hammer occurs when the water is full, after the normal water level is restored, the steam pipes, accessories, brackets, etc. must be checked to confirm that there is no abnormal condition before normal operation can be resumed. 2. The concept of co-producing soda and water: the phenomenon that soda and water rise together on the evaporating surface (water surface) of the boiler diesel burner, producing a large amount of foam and fluctuate up and down, is called co-leakage. Reasons for the formation of soda and water: There are two reasons for the formation of soda and water. One is the poor quality of pot water. Due to poor water quality and improper sewage discharge, the suspended solids or salt content in the pot water is too high, and the alkalinity is too high. Due to the separation of soda and water, the salt concentration near the surface layer of the boiler water is higher, the boiler water viscosity is very large, and the resistance to rising air bubbles increases. When the load increases and the vaporization increases, a large number of bubbles are stuck and blocked near the surface layer of the pot water without time to separate, forming a large number of bubbles, making the surface of the pot water toss up and down. The second is that the load increases and the pressure decreases too fast. When the water level is high, the load increases too fast, and the pressure decreases too fast, the vaporization of the water surface will increase, causing water surface fluctuations and steam carrying water. Treatment of soda and water co-leafing: When it is found that soda and water are co-leafing, the combustion should be reduced, the load should be reduced, and the main steam valve should be closed; strengthen the drainage of the steam pipe and superheater; fully open the continuous blowdown valve, and open the regular blowdown valve to discharge water, and water , In order to improve the quality of the boiler water; when the water quality is improved and the water level is clear, it can gradually return to normal operation. The boiler diesel burner has stopped running, and the boiler barrel water level still drops. Boiler diesel burner must be shut down under the following conditions during operation ① Boiler diesel The water level of the combustion engine is lower than the visible edge of the lower part of the water level gauge; other measures have been taken to continuously increase the water supply, but the water level continues to drop; ②The water level of the boiler diesel combustion engine exceeds the highest visible water level (full water), and the water level cannot be seen after the water is discharged; ③ All feedwater pumps fail or the water supply system fails, so no water can be fed into the boiler; ④The water level gauge or safety valve or thermometer all fail; ⑤ The boiler diesel burner components are damaged, endangering the safety of operating personnel; ⑥ The combustion equipment is damaged and the furnace wall collapses Or the boiler diesel combustion mechanism is burnt red, etc., which seriously threatens the safe operation of the boiler diesel combustion engine; ⑦ Other abnormal conditions endanger the safe operation of the boiler diesel combustion engine. Water shortage accident: When the water level of the boiler diesel combustion engine is lower than the minimum safe water level mark of the water level gauge, a water shortage accident of the boiler diesel combustion engine is formed. When the boiler diesel burner is short of water, the water level is often invisible in the water level gauge, and the inside of the gauge is white and bright; the low water level alarm operates and sends an alarm; the temperature of the superheated steam rises; the feedwater flow is abnormally smaller than the steam flow. In case of water shortage in the boiler diesel burner, improper handling may even lead to an explosion accident of the boiler diesel burner.　Treatment of water shortage for boiler diesel burner: When it is found that the boiler diesel burner is short of water, it should be judged whether it is slightly or severely short of water first, and then treat it differently as appropriate. The usual method of judging the degree of water shortage is 'calling water.' The operation method of 'calling water' is: open the water level meter's drain cock to flush the steam and water connecting pipes, close the water level indicator's steam connection pipe cock, and close the drain cock. If there is a water level in the water level meter at this time, it is a slight water shortage. If there is still no water level in the water level meter by 'calling water', it means that the water level has dropped below the water connecting pipe or even more serious, which is a serious water shortage. Treatment method: When there is a slight water shortage, water can be supplied to the boiler diesel burner immediately to restore the water level to normal. If the water level still does not return to normal after filling, the boiler should be shut down immediately for inspection. When there is severe water shortage, the furnace must be shut down urgently. If the degree of water shortage has not been determined or has been determined to be a serious water shortage, it is strictly forbidden to water the boiler diesel burner to avoid an explosion accident of the boiler diesel burner. Applicable boiler diesel burner: 'Calling water' operation is generally only suitable for small boiler diesel burners with relatively large water capacity, and not suitable for power station boiler diesel burners or other boiler diesel burners with small relative water capacity. For power station boiler diesel burners or other boiler diesel burners with relatively small water capacity, and for shell boiler diesel burners with the highest fire boundary above the water connecting pipe, the boiler should be shut down emergency if water shortage is found. Boiler diesel burner overpressure accident. When the steam pressure of the boiler diesel burner is overpressured, the steam pressure rises sharply and exceeds the allowable working pressure. The safety valve will act. The boiler diesel combustion engine is at normal water level, and the cause of overpressure is found to restore the normal operation of the boiler diesel combustion engine. Emergency plan for heat-conducting oil boiler and diesel combustion engine Emergency treatment measures 1. Emergency treatment for the accident of bulge and tube burst of the boiler diesel combustion engine: The combustion should be interrupted, the induced draft fan and combustion device should be turned off, the cause should be found and measures should be taken. 2. Emergency handling of leakage accidents: After all, heat transfer oil is combustible. Once an accident occurs, pipe wall leakage occurs. In addition to emergency shutdown of the furnace, the most important method is to immediately separate the flame and heat transfer oil pipe, and the furnace should not be installed. The heat-conducting oil boiler diesel burner of the radiant heating surface only needs to open the bypass flue in the upper part of the furnace. 3. Emergency treatment of the boiler diesel burner in the event of a power failure: ① Coil type: emergency shutdown of the furnace, open all furnace doors, immediately remove the coal burned in the furnace, let a large amount of cold air enter the furnace, quickly reduce the furnace temperature and eliminate the heat source; synchronization Open the oil drain valve of the boiler diesel burner, slowly put the high temperature oil into the oil storage tank, and let the cold oil in the expansion tank slowly flow into the boiler diesel burner to take away heat in time to prevent the oil temperature from exceeding in a short time after the power failure And cause coking, leading to accidents. 4. Explosion accident emergency treatment: ①Under normal circumstances, it can be controlled by the designed and installed expansion tank and safety valve. If necessary, it can be reduced by the leakage of the boiler diesel burner. ②In severe cases, the same measures as the sudden power failure should be adopted to deal with it. ③Report to the company's emergency headquarters, organize emergency teams to fight the fire, and request support from the nearby fire department (Datang Fire Squadron, Sanshui District, Foshan City). 5. Emergency response to bumping accidents: The fire must be minimized. Try to quickly drain the water and volatiles out of the system. If it cannot be controlled, stop the furnace immediately. 6. Minor fire: Use a fire extinguisher on the spot to extinguish the initial fire, and report to the company's emergency rescue headquarters. The daily cleaning process of the heat-conducting oil boiler diesel combustion engine The cleaning process of the heat-conducting oil boiler diesel combustion machine: discharge and remove the old oil → pre-wash → wash → water wash ① → water wash ② → water wash ③ → add new oil → dehydration → normal operation. What are the steps for cleaning the thermal oil boiler diesel burner? What is the correct way to use it? Operation method: (1) Drain and remove the old oil: use the heating system to heat the heat transfer oil to 70-80℃, and drain all the heat transfer oil in the system while it is hot. According to the conditions, the residual oil in the system can be released as much as possible. The cleaning agent that does not come out will be discharged out of the system after the oil becomes thinner through penetration, peeling, and dissolution. (2) Pre-washing: After measuring and dissolving the cleaning agent according to 1.5% of the total circulating water, put it into the system at any part of the heating system, fill the system with clean water, turn on the circulating pump to circulate, and use the heating furnace to heat the water Raise to 60℃±5℃, switch the relevant valve of each reactor in the system, so that all parts in the system are circulated separately. After three to five hours, open all low drain valves of the system to drain the water from the system. (3) Cleaning: After measuring and dissolving the cleaning agent according to 4.5 to 6.5% of the total circulating water, put it into the system at any part of the heating system, and after filling the system with clean water, turn on the circulating pump to circulate and use the heating furnace Heat the cleaning agent to 90℃±5℃. Switch the valve of the system so that all parts in the system can be cleaned. It is advisable to switch the valve every hour. The entire cleaning time is not less than 24 hours. (4) Water washing①: Fill the system with clean water, turn on the circulating pump to circulate, use the heating furnace to raise the water temperature to 90℃±5℃, switch the relevant valves in the system, and make all parts in the system circulate separately. Rinse the system. After three hours, open all the low-position drain valves of the system to drain the water in the system. (5) Water washing ②: Fill the system with fresh water, turn on the circulating pump to circulate, use the heating furnace to raise the water temperature to 90℃±5℃, switch the relevant valves in the system, and make all parts in the system get separately cycle. Rinse the system. After three hours, open all the low-position drain valves of the system to drain the water in the system. (6) Water washing ③: Fill the system with clean water, turn on the circulating pump to circulate, use the heating furnace to raise the water temperature to 90℃±5℃, rinse the system, and open all the low-level drain valves of the system after three hours , Drain the water in the system. After the discharge is completed, compressed air can be used to purge the remaining water in the system until it is exhausted according to the conditions. (7) Add new oil: Inject new heat transfer oil into the system. (8) Dehydration: The dehydration method is equivalent to the dehydration standard before the new system is used. (9) Normal operation: The system is put into normal operation. The correct use method of the heat-conducting oil boiler diesel burner 1. The level of heat-conducting oil in the high tank and the sensitivity of the level alarm should be observed correctly. The pressure difference between the inlet and outlet of the heat-conducting oil should not be less than 0.5kg/cm2. . Observe various instruments at any time and pay attention to the operation of each part to prevent danger. 2. The air volume adjustment of the flue system should be properly controlled to ensure the negative pressure of the oil furnace furnace combustion, and strictly prevent the fire from escaping from the furnace door and causing the furnace door to deform. 3. For system heating, the sum of the pipe diameter cross-sectional area of ​​the heating components is greater than or equal to the oil furnace outlet pipe cross-section (generally not less than two tanks for heating work). 4. During normal operation, the heat transfer oil in the high tank should be kept at a high level, and the heat transfer oil in the oil storage tank should be at a low level. When adjusting the air volume, the induced draft fan should be turned on before starting the blower, and the blower should be stopped before stopping the induced draft fan. 5. The circulation system must be checked frequently for leakage, vibration and abnormal noise, the liquid level of the expansion tank must be checked regularly, whether the sensitivity and reliability of the automatic control system meet the requirements, and the furnace tube and the dust collector should be cleaned regularly Of dust. 6. There are 4 to 6 ash cleaners (the number of boiler diesel burners is different), and the ash is cleaned once per shift. The handle of the ash cleaner is pushed back and forth several times by hand to remove the ash. 7. When the circulating pump fails during operation, the standby pump should be started immediately to replace it; when the asphalt is heated and only a single piece of heating is required, the bypass valve in the system should be opened, while reducing the amount of coal and air. 8. During the operation of the boiler diesel combustion engine, emergency shutdown measures must be taken when the following accidents are encountered. (1) The pressure of the boiler diesel combustion engine rises rapidly, and the pointer of the pressure gauge exceeds the prescribed red line. Although the safety valve is automatically exhausted and the ventilation has been weakened, the pointer of the pressure gauge continues to rise. (2) The furnace wall collapses or the boiler diesel combustion mechanism frame is burned red, which seriously threatens the safety of persons or equipment. (3) Blasting leakage occurred in the pressure component of the boiler diesel burner. (4) The components of the boiler diesel combustion engine are damaged, which seriously endangers the safety of operating personnel. 9. When the equipment is running, if an emergency power failure occurs or the furnace needs to be shut down due to equipment failure, the Dg25 valve of the lower tank should be opened immediately, so that the heat transfer oil (cold oil in the expansion tank) in the upper tank passes through the furnace and flows slowly under self-pressure To the oil storage tank, open the furnace door to ventilate and cool down at the same time, and use wet coal to suppress the coal fire in the furnace or use steam to extinguish the fire for emergency shutdown of the furnace. This process should be completed within 5 minutes. It is strictly forbidden to pour the furnace with water to prevent accidents. 10. Boiler shutdown: When the oil furnace system stops working, first stop coal feeding and blast, and the slag remover should continue to work until the cinder in the furnace is exhausted in the slag cleaner. The hot oil circulating pump should also continue to work until the temperature of the heat transfer oil drops below 80°C before stopping the hot oil circulating pump and the cooling water pump. 11. For the newly installed, modified or overhauled boiler diesel burner after the furnace wall, the furnace operation must be carried out as required before use. 12. The heating furnace must be subjected to a pressure test before use, and the water pressure should not be less than twice the rated working pressure; 13. The heating furnace and equipment should be thoroughly inspected, and various instruments should be complete and intact. Pumps, valves, circulation systems and safety accessories should meet technical requirements. Overpressure and overtemperature alarm systems should be sensitive and reliable. 14. Boiler diesel burners that need to be out of service for a long time should be fully tested in accordance with regulations. maintenance. 15. For boiler diesel burners that need to be reused after a long period of inactivity, the safety parts of the boiler diesel burner must be inspected and repaired before use, and the furnace should be dried and reused under the premise of ensuring safety. 16. In the case of insufficient light, when checking the storage of asphalt in the asphalt tank and whether there is leakage in the heat transfer oil pipe, flashlights should be used for lighting, and open flame lighting is strictly prohibited to avoid fire accidents. ! If you are interested in diesel combustion engines, please contact us for a quote!