How to deal with the slagging air of the boiler diesel burner into the furnace

The normal operation of the heat-conducting oil furnace and the light oil burner can only be put into normal operation after the end of the hot and cold debugging : Preparation: Before blowing in the light oil burner of the heat transfer oil furnace, it must be carefully reviewed. The review system can ensure that all equipment is in good condition, check the fuel provided, and adjust the opening of the valves of the heating system and the combustion system according to the process requirements. Startup: After the preparations are ready, you can operate in the following order: turn on the power, start the hot oil circulating pump, understand and record whether the pressure, temperature and other relationship parameters are normal. Set the upper and lower limits of the oil temperature digital display controller at the inlet and outlet, and the upper and lower limits of the oil-electric contact pressure gauge at the inlet and outlet. First of all, the artificial addition of water to coal is a crude method, which will reduce the heat utilization rate of coal, directly lead to a large amount of coal combustion heat energy, and consume a lot of heat energy to dry water in coal heating before normal operation. Therefore, there is about 10% energy waste. Because the boiler diesel burner is a heat transfer system that mixes the hot smoke after combustion with a large amount of fine coal and ash and other impurities. As a result, the large amount of heat energy contained in the impurities in the flue gas cannot be separated in a short time, and the excessive impurities in the flue gas will cause greater wear of the heat exchange system and affect the normal service life and heat exchange. Equipment efficiency. Check the system pipes, valves, and equipment for leaks. The cold oil circulation will continue for at least 4 hours until the outlet pressure of the hot oil circulation pump fluctuates steadily and the system does not leak. Cleaning the filter: After the cold oil has been circulated for a period of time, the impurities in the pipeline will be filtered through the Y-type filter and should be disassembled and cleaned immediately. Usually, during cold commissioning, the debris in the filter can be cleaned 2-3 times. Preparatory work before hot commissioning: After cold commissioning is completed and running for several hours without defects, hot commissioning can be started. Conclusion There have been a small batch of new breakthroughs in China's biomass combustion technology, and new furnaces continue to operate. The diesel burner technology of overseas biomass combustion boilers has matured and is in operation. However, the small batch problems of biomass boiler diesel burners, including pollution, corrosion, agglomeration, SONOx, HCl and aerosol emissions, are mainly caused by the physical and chemical properties of the biomass itself, which requires further research and development. Burning equipment. China’s biomass boiler diesel burner development focus and problems to be solved are: the development of biomass fuel pre-solving equipment, boiler diesel burner heating surface pollution, corrosion, slag, aerosol emissions and other issues stealth research; boiler diesel burner Design and technical improvements. Due to the structural characteristics of the boiler diesel burner, the coal seam thickness of all coal-fired boiler diesel burners is controlled below 100mm, which is beneficial to the operation of the entire boiler diesel burner system. In addition, the blowing of all boiler diesel burners is cold air, so the coal seam is too thin, and the combustion temperature environment cannot be increased. The blowing of cold air intensifies the disadvantage of low combustion efficiency. All coal-fired boiler diesel burners are fueled by coarse pulverized coal, and the particle size is very uneven, ranging from a few microns to a few centimeters. Due to the influence of the blowing speed, the fine coal particles of a few microns in size are blown away and discharged at the same time without burning. A few centimeters or even a few millimeters of high-quality large coal (about 1530% of coal), due to the low combustion temperature and short combustion time, cannot continue to burn when heated to about 700°C, and is discharged through the slag discharge system, and the mixed water is cooled and discharged coal ash. When the ignition starts to heat up, the heat transfer oil has low temperature, high viscosity, slow speed, and thick film layer. The heating speed must be strictly controlled, generally below 40-50℃/h, in order to avoid local heat overheating. When the temperature of the circulating heat transfer oil is high but the temperature of the thermal equipment cannot be increased, the outlet temperature of the heat transfer oil should not be increased blindly, and thermal equipment, such as a scale, should be used. When using heat transfer oil, pay attention to the temperature and pressure at the beginning of the startup The relationship between. If the pressure is too high and the temperature is too low, it means that there is water and it should be exhausted immediately; if the pressure is low and the temperature is high, the heat transfer oil is insufficient. 3. Because the existing coal-fired boiler diesel burners burn coal directly, the system heat transfer of boiler diesel burners in a hot environment is poor, the atmosphere contains a lot of coal ash, and the fine particles are not fully burned, and some volatiles cannot be burned. The sexual substance coal tar causes a heat exchange system, for example, a layer of black carbon composition adheres to the wall. This greatly reduces the heat transfer coefficient of the system. As a result, the flue gas temperature of the diesel combustion engine system of the coal-fired boiler is too high. (Due to the larger combustion chamber of the boiler diesel burner structure (up to 35 meters), the flue gas temperature of the coal-fired steam boiler diesel burner, coal-fired hot oil and coal-fired hot water boiler diesel burner can reach 170c°270c° ) Enterprise system configuration cannot continuously burn boiler diesel burner for a long time (because of steam consumption). The main process of cold debugging is the main line of heat transfer oil entering and leaving the tank area. Since the fuel tank is high-temperature asphalt, the heater is temporarily not involved in cold debugging. Debugging steps: oil filling: turn on the power, start the oil pump, and fill the expansion tank with oil. When the overflow pipe overflows, start the circulating pump, master the correct operation method of each valve, immediately add heat transfer oil to the expansion tank, and often open the pipe to exhaust air. Check the system for oil leaks. After sending all the calculated heat transfer oil into the system, the low liquid level in the expansion tank should not alarm, and the liquid level in the oil storage tank should be displayed as a small amount of oil. Cold oil circulation: The hot oil circulation pump runs continuously to check for pressure fluctuations, and often opens the pipeline to empty the valve to exhaust air from the system. Four. Biomass boiler diesel burner has the following four advantages: multi-functional heating can be used for boiling, boiling, and bathing at the same time; super variable system. The initial heat transfer temperature is low, the heat transfer speed is fast; the installation cost is low, and the heating is safe: general equipment, without changing the original heating equipment, ordinary pipes, radiators, water circulation, realizing various sources of heating materials, never tired, no matter It can be taken anywhere (such as: rice husk, corn straw, straw, wheat); safety and environmental protection: low working pressure, cooking, boiling water, bathing, heating, etc., also compatible with boiler diesel combustion, greenhouse heating, heating, medium Small restaurants are used in large areas without seasonal restrictions. All biomass boiler diesel burners can be used. It is a very potential product in the boiler diesel burner industry. Only a correct understanding of biomass boiler diesel burners can actively guide boiler diesel combustion. Machine industry. As a result, the combustion temperature in the combustion chamber is not conducive to the complete combustion of coal, which results in black smoke from the chimney. However, the combustion value of these materials is quite high, and it also causes a large waste of resources in industrial kilns: because they are generally used for smelting kilns and heat recovery, the use of high-temperature flue gas above 900°C and 900°C can be used. The exhaust system can only be used in the heat exchange system to reduce the flue gas temperature to improve fuel utilization or heat utilization. However, due to thermal factors, when it is lowered to 250°C, the flue gas can hardly be used. As a result, a large amount of high-temperature flue gas containing a large amount of thermal energy (the flue gas temperature of glass kilns, ceramic kilns and metallurgical annealing furnaces can reach 350c°550c°) is discharged and discarded, resulting in a lot of waste. ! If you are interested in diesel combustion engines, please contact us for a quote!