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What are the differences between the thermal oil boiler diesel burner and the steam boiler diesel burner?

2021-01-08


  The thermal oil boiler diesel burner is the most popular type of boiler diesel burner in the current heating market. Because of its clean and environmentally friendly characteristics, it is used in chemical, biological, papermaking , Food and other industries are widely used. Compared with traditional steam boiler diesel burners, what are the differences between them? Let's briefly explain below. Classification of steam boiler diesel burner 1. Divided by fuel: 1. Diesel burner for coal-fired boiler, 2. Diesel burner for oil-fired boiler, 3. Diesel burner for gas boiler, 4. Diesel burner for electric heating boiler, 5. Diesel burners for nuclear boilers, 6. Diesel burners for waste heat boilers, etc. Among them, the first 4 are the most common and the most common. Diesel burners for coal-fired boilers have the lowest operating cost, but they occupy a large area and cause large environmental pollution and require operators. Many; the oil and gas boiler diesel combustion engine has a higher degree of automation, the operating cost is higher than that of coal combustion, the area is small, and it requires fewer operators; I have not operated the electric heating boiler diesel combustion engine, but the operating cost should be the highest Yes, but the boiler diesel burner occupies a small area and is the best environmental protection; other boiler diesel burners will not be introduced because I don’t understand.  2. According to the heat transfer method, it is pided into water tube boiler diesel burner, fire tube boiler diesel burner, water and fire tube boiler diesel burner, etc. Oil and gas boiler diesel burners are generally fire tube boiler diesel burners. Typical representative model: WNS series (horizontal internal combustion chamber combustion boiler diesel burners). Features of this type of boiler diesel burners: simple structure and average rated evaporation Not large (generally ten tons or less, and some large ones, but generally no more than 35 tons), the boiler starts up and pressurizes quickly, and the water quality requirements for boiler diesel burners are relatively low; coal-fired boilers and diesel burners are generally water tube boilers Diesel burners and water tube boilers have higher thermal efficiency, but their structure is complex, which requires higher water quality for boiler diesel burners.  The classification of thermal oil boiler diesel burner  1, coal-burning   uses coal as fuel and thermal oil as heat carrier. Generally, it is pided into three types of coal-burning structure: vertical hand-burning, horizontal cylindrical type, and horizontal machine-burning. These three types are mainly classified according to the labor intensity of adding coal.  2, fuel oil (gas)   uses oil or gas as fuel, uses a burner to burn the fuel, and uses heat transfer oil as the heat carrier. Generally pided into two types of structures, vertical and horizontal, mainly based on the height of the equipment space. 3. Electric heating For electric heating oil furnaces, the heat is generated and transmitted by electric heating elements immersed in the heat transfer oil. The heat transfer oil is used as the medium, and the circulating pump is used to force the heat transfer oil to circulate in the liquid phase to transfer the heat to the one or A variety of heat-using equipment, after being unloaded by the heat-using equipment, re-passes the circulating pump, returns to the heater, and then absorbs heat and transfers it to the heat-using equipment. Repeatedly, the continuous heat transfer is realized and the temperature of the heated object rises. Meet the heating process requirements. The working principle of the steam boiler diesel burner takes the coal-fired steam boiler diesel burner as an example:    1. The heat generated by the combustion of pulverized coal in the furnace is first absorbed by the water wall through radiation heat transfer, and the water on the water wall boils and vaporizes, producing a large amount of steam Enter the steam drum for steam-water separation (except once-through boilers), the separated saturated steam enters the superheater, and continues to absorb the heat of the flue gas from the top of the furnace, the horizontal flue and the tail flue through radiation and convection, and the superheated steam meets the requirements Working temperature. The diesel combustion engine of steam boiler for power generation is usually equipped with a reheater, which is used to heat the steam after the high-pressure cylinder has done work. The reheated steam from the reheater goes to the middle and low-pressure cylinders to continue to do work and generate electricity. 2. When the pulverized coal furnace is working, the position of the flame center will affect the evaporation capacity. Generally speaking, the lower flame center means the higher the evaporation capacity, and the higher flame center means the lower evaporation capacity. The position of the flame center will also affect the superheated steam or reheated steam. Temperature, usually if the flame center is low, the temperature of superheated steam, especially re-superheated steam, will be lower, and vice versa. 3. The layout of the burners, as far as the pulverized coal stove is concerned, there are currently a variety of front and rear wall counters, four-corner tangential combustion, and double four-corner tangential combustion, each with its own characteristics, because the same furnace cannot be used at the same time The effects of the above-mentioned layouts on steam cannot be directly determined.  The working principle of the heat-conducting oil boiler diesel burner  Take the electric heating heat-conducting oil boiler light oil burner as an example:   heat-conducting oil boiler light oil burner is a new type of environmentally friendly heat energy conversion equipment. Its working principle is: use electricity as energy source, convert electrical energy into heat energy through electric heating elements; use organic heat carrier (heat transfer oil) as heat transfer medium, and use high temperature oil pump to force heat transfer oil to circulate in the system, making it cycle It can achieve the purpose of continuously obtaining the required heat energy by the heating equipment; and can meet the requirements of the set process temperature and high-precision temperature control in the production process. Generally, the heat-conducting oil heating furnace is composed of the host (heating body, high-temperature oil pump and filter), high-level oil tank, control cabinet, pipeline, etc. as a complete set of equipment and heat equipment to form a forced liquid-phase circulation heating system.  Structural characteristics of steam boiler diesel burner  1. Welding on the main body of the steam boiler diesel burner: The main welds are all advanced submerged arc automatic welding technology to ensure welding quality. All main welds are 100% radiographically inspected in accordance with the requirements of the 'Supervision Regulations for the Safety Technology of Steam and Steam Boiler Diesel Burners', according to the second-level qualification standard.  2. The main body of the steam boiler diesel combustion engine adopts a horizontal internal combustion full wet back three-pass structure.  3. The seals of the front and rear smoke boxes of the steam boiler diesel burner are made of high temperature resistant asbestos graphite materials, and the seal is reliable to ensure that the smoke does not leak when the steam boiler diesel burner operates under slightly positive pressure.  4. Threaded smoke tube: On the second return convection heating surface of the steam boiler diesel burner, we use threaded smoke tube, which is conducive to efficient heat transfer. The heat transfer is enhanced to make the steam boiler diesel burner high in thermal efficiency. One threaded tube is equal to 2.4 smooth tubes. When the fluid flows in the pipe, the fluid velocity near the pipe wall is very low. The fluid at the pipe wall is called the boundary layer. In the series of thermal resistances when the flue gas transfers heat to the water outside the pipe, the boundary layer The thermal resistance is the largest, but the boundary layer is very thin. As long as the boundary layer is slightly disturbed, for example, a boss is pressed inward on the inner wall of an ordinary pipe, and the boundary layer is disturbed, and the thermal resistance will be greatly reduced. The threaded smoke pipe is effective One of the methods.  5. In order to make the system more energy-saving, continuous water supply adjustment is adopted to avoid frequent start of the water pump. There is a wide water space between the second and third pass smoke pipes to ensure the natural circulation of the water in the pot. 6. Ontology safety device: a built-in explosion-proof door is installed at the rear of the steering chamber of the steam boiler diesel burner to make the steam boiler diesel burner ignite and operate, if there is gas deflagration in the furnace: timely release the pressure to prevent the furnace deflagration , Safe and reliable; because of the built-in, it will not hurt people after the jump. The structural characteristics of the heat-conducting oil boiler diesel combustor Take the gas heat-conducting oil boiler diesel combustor as an example 1. The gas heat-conducting oil boiler diesel combustor uses an arched tube plate and a threaded smoke tube to form a boiler barrel, so that the boiler barrel is changed from a quasi-rigid body For the quasi-elastomeric structure, the bracing members in the tube sheet area are eliminated, reducing the stress. The smoke tube in the tube sheet is changed from two passes to a single pass, which solves the problem of tube sheet cracks.  2. As the lower part of the drum is arranged with the rising pipe row, the dead water area at the bottom of the drum is eliminated, so that the mud is not easy to deposit, and the high temperature area of ​​the drum can be well cooled, preventing the bulge in the lower part of the drum.  3. The use of high-efficiency heat transfer threaded smoke pipes achieves enhanced heat transfer effects, achieving the characteristics of rapid heating and pressure rise of boiler diesel burners, and improving the thermal efficiency of boiler diesel burners.  4. Compact structure. Compared with the same type of boiler diesel burner, the external size is small, saving the capital investment of the boiler diesel combustion engine room.   5. Stable operation, convenient adjustment, and sufficient output. With 110% overload capacity.  7. Threaded smoke tube is used to enhance heat transfer, improve heat transfer coefficient and thermal efficiency, because the flue gas has a disturbing effect in the tube. Dust is not easy to accumulate in the pipe, which plays a role of self-cleaning.  Structural characteristics of steam boiler diesel burner  1. Welding on the main body of the steam boiler diesel burner: The main welds are all advanced submerged arc automatic welding technology to ensure welding quality. All main welds are 100% radiographically inspected in accordance with the requirements of the 'Supervision Regulations for the Safety Technology of Steam and Steam Boiler Diesel Burners', according to the second-level qualification standard.  2. The main body of the steam boiler diesel combustion engine adopts a horizontal internal combustion full wet back three-pass structure.  3. The seals of the front and rear smoke boxes of the steam boiler diesel burner are made of high temperature resistant asbestos graphite materials, and the seal is reliable to ensure that the smoke does not leak when the steam boiler diesel burner operates under slightly positive pressure.  4. Threaded smoke tube: On the second return convection heating surface of the steam boiler diesel burner, we use threaded smoke tube, which is conducive to efficient heat transfer. The heat transfer is enhanced to make the steam boiler diesel burner high in thermal efficiency. One threaded tube is equal to 2.4 smooth tubes. When the fluid flows in the pipe, the fluid velocity near the pipe wall is very low. The fluid at the pipe wall is called the boundary layer. In the series of thermal resistances when the flue gas transfers heat to the water outside the pipe, the boundary layer The thermal resistance is the largest, but the boundary layer is very thin. As long as the boundary layer is slightly disturbed, for example, a boss is pressed inward on the inner wall of an ordinary pipe, and the boundary layer is disturbed, and the thermal resistance will be greatly reduced. The threaded smoke pipe is effective One of the methods.  5. In order to make the system more energy-saving, continuous water supply adjustment is adopted to avoid frequent start of the water pump. There is a wide water space between the second and third pass smoke pipes to ensure the natural circulation of the water in the pot. 6. Ontology safety device: a built-in explosion-proof door is installed at the rear of the steering chamber of the steam boiler diesel burner to make the steam boiler diesel burner ignite and operate, if there is gas deflagration in the furnace: timely release the pressure to prevent the furnace deflagration , Safe and reliable; because of the built-in, it will not hurt people after the jump. ! If you are interested in diesel combustion engines, please contact us for a quote!

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