How to effectively extend the service life of thermal oil boiler diesel burner

With the continuous development of our country’s economy, today’s people are constantly demanding work and living environment Therefore, the traditional boiler diesel burner with serious environmental pollution is gradually abandoned by people, and replaced by a cleaner and more efficient heat-conducting oil boiler diesel burner. In order to effectively maintain the service life and efficiency of the heat-conducting oil boiler diesel combustion engine, certain requirements must be followed during operation, and the boiler diesel combustion engine must be regularly maintained after a period of use. So let's briefly introduce it below. Common causes of accidents of heat-conducting oil boiler diesel combustion engines 1. The high-level tank lacks oil, which causes the oil to oxidize and catch fire at high temperatures; 2. The valve or flange is damaged and the high-temperature oil leaks and catches fire; 3. The temperature of the heat-conducting oil is reduced The circulation pump was turned off when it did not fall down, resulting in local ultra-high temperature; 4. The failure of the oil pump caused the oil to be unable to circulate, but the furnace was still heating, causing the pipeline to burn through and fire; 5. The oil was coking and aging, and the viscosity increased and blocked the pipeline. So that the oil cannot be dredged; 6. Water or pollutants enter the high tank, and the water boils and expands in the heat transfer oil system. Factors affecting the service life of the heat-conducting oil boiler diesel burner 1. Reasonably choose the heat-conducting oil boiler light oil burner. Choose the heat transfer oil according to the instructions, and use it strictly at over-temperature. Never try to save money and buy unqualified oil, let alone mix the heat transfer oil by yourself, otherwise the furnace tube will be blocked in a few months at most half a year, causing a fire, and the consequences will be disastrous. ! 2. After half a year of general use, you must sample and test the heat transfer oil according to the instructions. If problems are found, replace with a new heat transfer oil immediately, but you must be careful not to mix different types of heat transfer oil. 3. Prevent the oxidation of heat transfer oil. Strict heat transfer oil is in contact with air at >50 degrees; this will cause the heat transfer oil to crack, its speed is amazing, and the consequences are very serious. The test personnel are required to close the exhaust valve on the auxiliary exhaust pipe after normal work. Remember. 4. Strictly control the flow rate of the heat transfer oil not to be less than 1.5 m/s. This item was originally determined by design, but because some of the temperature differences between the inlet and outlet are too large during use, the original design requirements are destroyed and the heat transfer oil cannot Keeping the flow state, the boundary layer thickens and the thermal resistance increases, so that the furnace wall exceeds the temperature of the oil film, causing the thermal oil to crack, polymerize, deposit carbon, give coke and even burn through the furnace tube. 5. Sudden power failure, the circulation pump stops, and the flow rate is equal to 0. Because the refractory regenerator in the furnace continues to release heat, the heat transfer oil in the furnace tube is overheated, which will cause cracking and coking. Long-term accumulation will also cause the furnace tube to explode and cause disaster. Therefore, please follow the instructions. 6. To stop the furnace, it must be carried out in accordance with the instructions. Generally, the temperature of the heat transfer oil should be lowered to 100 degrees before stopping the hot oil pump. 7. It is strictly forbidden to operate over-temperature at will, add more fuel, increase the air volume, and make the heat-conducting oil in an over-temperature state, so that cracking and coking of the heat-conducting oil can occur, and major accidents will occur in the long run. The relevant regulations on the mixing of heat transfer oil prohibit and restrict the use of heat transfer oil 1, and the use of gas phase heat transfer oil is prohibited. 2. Try not to mix liquid-phase heat transfer oil. Restrictions on the mixing of heat transfer oils If you need to mix synthetic heat transfer oils with mineral heat transfer oils, or mix synthetic liquid phase heat transfer oils with different chemical compositions, and mix mineral heat transfer oils produced by different manufacturers, they should meet The following conditions. 1. The added heat transfer oil should pass the thermal stability test of GB/T 23800, and has higher or equivalent thermal stability than the original heat transfer oil in use. 2. It meets the general requirements specified in the GB 24747 standard. 3. It should be verified and inspected before joining the system. 4. The manufacturer or supplier should ensure that the mixed heat transfer oil can be used safely. Quality requirements for mixed heat transfer oil 1. The amount and mixing ratio of the mixed heat transfer oil added to the heat transfer system should be accurately recorded. At the same time, samples of the mixed heat transfer oil should be tested and a 2L retest sample should be kept. 2. The mixed heat transfer oil should be used in accordance with the original properties and performance conditions of the heat transfer oil in use, and its quality index should meet the requirements of the corresponding allowable use quality index. Replacement and disposal of heat transfer oil 1. Replacement After the heat transfer oil has deteriorated, if measures are not taken for treatment or replacement in time, it is easy to cause coking, carbon deposition, corrosion and other hazards in the heating surface and heat transfer system of the boiler diesel burner, which will affect the boiler The safe and energy-saving operation of the diesel combustion engine may even cause safety accidents such as furnace tube burnout, leakage, and fire. Therefore, when the residual carbon, acid value, kinematic viscosity, etc., caused by overheating, oxidation, or pollution of the heat transfer oil in use reach the 'stop use quality index', it should be discontinued, and it can be recycled if it still has recycling value; Those with recycling value should be replaced in time. 2. System cleaning during replacement. After the heat transfer oil is deteriorated or severely polluted, it is often easy to coke or foul in the pipes of the heat transfer system, forming thermal resistance and flow resistance on the heat exchange surface or in the pipe, affecting heat transfer , Wasting fuel. In addition, a large number of practices have shown that when changing the oil, if there is a lot of deteriorated heat transfer oil on the boiler diesel burner and the pipe wall of the system, if it is not cleaned or is not cleaned, the remaining oil will remain Degraded heat-conducting oil or pollutants can easily promote the newly injected heat-conducting oil, promote its accelerated deterioration, and cause greater economic losses. Therefore, after an accident or before replacing the degraded heat transfer oil, it is necessary to check the boiler diesel burner and the circulation system. If there are more pollutants, coking materials or adhered sludge in the system (including the oil tank), it is necessary Clean the thermal oil boiler diesel burner and heat transfer system. 3. Scrap disposal of heat transfer oil The heat transfer oil in use belongs to organic chemical products, and some heat transfer oil in use may even belong to hazardous chemicals that are harmful to humans and the environment. According to GB 24747, the regulations for the scrapping and disposal of in-use heat-conducting oil are as follows: 1) When the kinematic viscosity, acid value, carbon residue or pollution degree of the in-use heat-conducting oil is within the “stop use index” range, and it is difficult to effectively recycle to When the quality index is allowed, the heat transfer oil should be replaced in whole or in part. 2) The replaced heat transfer oil should be disposed of in accordance with the laws and regulations of the national safety and environmental protection department regarding the disposal of waste petroleum and chemical products. How to avoid the deterioration of the heat transfer oil 1. The quality of the light oil burner of the heat transfer oil furnace. A high-position expansion tank is usually set to isolate the high-temperature heat carrier from direct contact with air. The high position tank can be protected by nitrogen filling. If there is no nitrogen filling protection, a certain liquid level should be maintained and a minimum liquid level alarm should be installed. 2. A filter should be installed at the entrance of the circulating pump. 3. Power failure protection. In the event of a sudden power failure, effective safety protection measures must be taken to avoid overheating of the heat transfer oil and overheating of the metal on the heated surface. 4. Regular laboratory tests. 5. Replenish new oil. Regular and appropriate replenishment of new heat transfer oil can keep the residual oil in the system basically stable. The supplementary heat transfer oil should be the same type of product produced by the same manufacturer, and different organic heat carriers should not be mixed. 6. Control the flow rate of heat transfer oil. The flow of heat transfer oil in the hot oil furnace should be stable and have a certain flow rate. During the operation of the hot oil furnace, the circulating oil pump is not allowed to stop, and the pump should be maintained regularly. 7. Control the temperature of heat transfer oil. It should be ensured that the temperature of the heat transfer oil at the outlet of the light oil burner of the heat transfer oil furnace should not exceed the maximum operating temperature. The maximum film temperature of the heat oil furnace should be less than the allowable oil film temperature. There should always be a temperature difference between the film temperature and the main fluid temperature of the heat transfer oil. The countermeasures of the heat-conducting oil boiler diesel combustion engine in the event of a power outage. During the operation of the heat-conducting oil circuit, when faced with a sudden power outage, we should immediately take the cold oil replacement treatment and cannot ignore it. This is because the circulating oil pump cannot be ignored due to a power outage. During operation, due to the residual heat of the furnace, the heat transfer oil in the furnace will exceed the allowable value of the light oil burner of the heat transfer oil furnace within 1 to 2 minutes. At this time, the cold oil conversion valve should be opened quickly to remove the heat in the expansion tank. The cold oil flows through the furnace and flows into the oil storage tank by itself. At the same time, wet coal compression or emergency shutdown should be performed. Special attention: This cold oil replacement process should be completed within 5 minutes. In addition, please be careful not to drain the oil in the expansion tank to prevent the system from inhaling air. In order to facilitate handling, the oil in the expansion tank can be put into the oil storage tank in advance. When the oil in the expansion tank is about to be discharged but not exhausted, an oil level mark is made on the oil storage tank level to perform cold oil conversion During operation, when the oil level in the oil storage tank approaches the mark, close the cold oil replacement valve. Safety operating procedures for heat-conducting oil boiler diesel burners. Boiler diesel burners prepare operating procedures 1. According to relevant regulations, add lubricating oil to all transmission systems. 2. Check the opening and closing of the piping system valves and the liquid level in the expansion tank. 3. Pour water into the slag tapping machine of the chain furnace, water seal the slag tapping machine, and maintain the proper water level. 4. Prepare the coal of II and III coal quality. 5. According to the heating requirements, use firewood to ignite the oven and dehydrate the heat transfer oil. Boiler diesel combustion engine workers start operating procedures 1. Turn on the power switch, check whether the voltage is normal, then pull the three knob switches to the manual position, and turn on the key knob. Control the power switch. The indicator light is on. The digital display shows the temperature value and at the same time adjusts the rotation direction of the motor. 2. Start the oil injection pump, inject the heat transfer oil into the expansion tank, and the indicator light does not light up when the liquid level is reached. 3. Open the valve on the circulation and enter the heating equipment pipeline to fill the entire system with heat transfer oil, and observe the liquid level in the expansion tank. If the liquid level drops, add heat transfer oil in time. 4. Start the circulating pump. When the pressure gauge at the inlet of the differential furnace is normal, the inlet pressure is the pump head pressure and the pointer does not shake. The outlet pressure will decrease and the pointer will not jitter. Adjust the pressure difference controller to about 1kgf/cm, which is a low pressure difference alarm. If it is lower than this pressure difference, the indicator light will light up and an alarm will be issued. 5. Start the blower, induced draft fan, slagging machine and grate, hand-burning furnace, first start the induced draft fan, then start the blower, the starting procedure of the continuous blast furnace is slagging machine-grate-induced draft fan-blower. The program is reversed when the furnace is shut down. Boiler diesel combustion engine operating rules 1. Check whether the displayed value of the temperature indicator is consistent with the actual temperature. Check whether the upper and lower limit set value is consistent with the temperature required by the process. Generally, the upper limit is higher than the lower limit by about 12°C. 2. Debug automatic operation. When the manual operation is normal and the set temperature is reached, the three knobs can be pulled to the automatic wrong left position for automatic temperature control. The digital display automatically controls the blower and induced draft fan. When the measured value is lower than the upper and lower set value, the blower and induced draft fan will automatically start. On the contrary, if the measured value is higher than the lower limit and lower than the upper limit, the blower and induced draft fan will automatically stop, but the temperature will still rise slowly above If the upper limit setting value is at, an over-temperature alarm is issued and the indicator light is on. 3. Adjust the air volume and pressure. Adjust the air door of the blower and induced draft fan according to the actual situation. When the air volume and pressure are normal, the position of the air door is fixed. 4. Observe the pressure gauge frequently. Pay attention to the jitter of the pointer. If the jitter is severe, measures should be taken to slow down or even stop the temperature rise. 5. During the movement, it is not allowed to adjust or close the valve arbitrarily, and it is not allowed to stop the circulation pump. If necessary, the relevant personnel must agree, otherwise it will affect the normal flow of heat transfer oil. 6. Operators should add less coal, frequently add coal, frequently draw fire, and frequently draw ash. ! If you are interested in diesel combustion engines, please contact us for a quote!