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iIn the modern factory, the air compressor is the main auxiliary equipment, and it is also a large energy-consuming household, such as a factory that produces 1 million copper-clad boards per month. The air compressor consumes 350,000 kWh of electricity and the electricity cost is 250,000 yuan. The energy that is actually converted into compressed air is only about 30, and the rest of the electrical energy is converted into heat energy, which causes serious greenhouse pollution to the environment. However, the energy-saving and emission-reducing low-carbon recycling economy has gradually become the focus of attention. By taking away the traditional air compressor and compressed air, the prior art cooling method is a natural air plus exhaust fan, and the cooled wind is discharged into the atmosphere. , causing a large amount of energy waste, while the cooling effect on the equipment is not good, such as the temperature of the cooling oil can not be well controlled in a reasonable range, the compressed air cooling outlet temperature still reaches about 500, resulting in poor dehumidification effect of the compressed air. Blocking, etc., through the improvement of new process technology, the air-cooling is changed to water-cooling, achieving more than 75 heat energy recovery and utilization, and effectively solving the bottleneck of the prior art to improve the operational stability of the air compressor and reduce the maintenance cost of the air compressor.
The basic principle of the industrial air compressor and the current technical bottleneck From the principle of the above air compressor, it can be seen that the air compressor mainly includes the compressor head motor compressor head air inlet filter oil separator oil cooler compressed air cooler cooling exhaust System compressed air dehumidification filtration and gas storage tanks. Under the action of electric energy, the compressor rotates at a high speed, and part of the electric energy is converted into kinetic energy of compressed air, and most of the energy is transferred to the cooling oil and the compressed air in the form of heat energy.
The oil temperature at the outlet of the oil separator can reach 90,950. It needs to be cooled down to about 5060. If the oil temperature cannot be lowered, the service life of the compressor head and lubricating oil will be seriously affected. The temperature of the compressed air outlet of the oil separator is as high as 70. After the air cooler is cooled, the temperature still reaches 50 1; 60, happy, caressing the palm, scallions, sputum, sputum, dehumidifier load, and effectively eliminate the compressed air The generation of condensed water reduces the damage of the pneumatic components caused by the compressed air in the workshop. It can be seen from the principle that the principle of oil compressed air cooling is that the exhaust fan draws natural wind to cool the atmosphere, and the natural wind after heat exchange is discharged into the atmosphere, and the porcelain plate of the cooler is easily blocked by the air dust to affect the cooling effect.
From the above analysis, it can be concluded that the technical defects of the air compressor are directly discharged into the atmosphere by the energy consumed by the exhaust fan. The waste is not only wasteful but also pollutes the environment, which not only has poor cooling effect, but also restricts the quality of compressed air and affects the running performance of the equipment. Wait.
Air compressor energy recovery key points and energy recovery calculations Through the analysis of the principle of industrial air compressors and current technical defects, it can be determined that the high temperature oil and high temperature compressed air at the outlet of the oil separator are the key technical points for heat energy recovery.
Taking the 75kw air compressor as an example for energy calculation, the ability to generate compressed air 720 high temperature oil 951 is reduced to about 55. The temperature difference is, the head cooling oil is about 35, about 28 1 , the flow rate is 28 1680 let also 1 down to about 20, the temperature difference is nearly 50, 2 before the high temperature air cooling =. After the recovery of cooling, where = 201 ding = 201 air specific heat, = 0.3431 plus 3, the recovery of heat is 2 exhaust cooling fan 3 let , Comment = 3.66 for Joule, 1 also the valueless energy consumption generated by the air compressor is 1 power consumption. Therefore, the theoretical recoverable power is 66. If the thermal combustion value of diesel is 10 000 ft, 8, the 75 kW air compressor consumes 5.7 kg of non-value energy. If the monthly production capacity is 1 million sheets of 00, the gas consumption is probably The operation of 6 sets of 751 air compressors at the same time is equivalent to the consumption of worthless energy per hour for 6 fathers 5.7=34.218, the oil price is 6 yuan 18, the factory theory can recover energy costs = 34.2 parent 2430 parent 12 father 6 = 1.78 million years.
The use of water exchange to achieve the heat of waste from the air compressor to recover water for heat recovery calculation According to the theory, the heat that can be recycled by the air compressor is about 88 of the total power of the air compressor. Considering the energy loss in the actual exchange process, taking 75 of the rated power of the air compressor as the energy recoverable coefficient, according to the above calculation relationship, the following relationship between the recovered heat and the generated hot water can be obtained.
Therefore, the air compressor heat recovery operation cost is extremely low, and it is worthy of widespread promotion. The generated hot water can be used for the employees' daily life water production equipment consumption hot water equipment heat exchange such as air conditioning dehumidification winter workshop office building heating, etc. After exchange, the low water return number is determined to recover heat ft scale children 1 S 34 5 Air compressor heat recovery new process technology 1 new heat recovery technology innovation point From the above heat recovery new process can be seen, major, air-cooled change from water-cooled ceramic chip exchanger to plate exchanger.
2 The cooling water is first subjected to a heat exchanger through a compressed air plate exchanger, and then exchanged by an oil cooling exchanger.
Minimize the temperature of the compressed air and reduce the moisture in the compressed air. Secondly, in the case of energy recovery, the temperature of the cooling oil is effectively controlled to about 50 1 to prevent the negative effects caused by the low oil temperature exchange.
2 air compressor hot water cost analysis heating 1 ton water temperature rise 40 operating costs can be warmed back to the circulating water tank for heating, to achieve low carbon energy saving and environmentally friendly production philosophy.
6 General language With the progress of the times, energy conservation, environmental protection and low carbon will be the eternal pursuit of all mankind, and it is also a powerful means for enterprises to participate in global competition. The energy saving space of the air compressor is huge. If the new energy recovery technology is used, the energy consumption of the enterprise will be greatly reduced, and the low carbon emission reduction will be realized in the true sense, and the social responsibility will be better. 1 1 Atlas air compressor manual.
Xiong Gensheng, engineer.
Forging Stainless Steel,Forged Wheel,Forging Valve,Forge Parts
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