This paper mainly introduces the current situation of energy utilization of compressed air system. By excavating the energy-saving potential of compressed air system, this paper introduces some optimization measures that can be taken by compressed air system, thereby reducing the loss rate of compressed air, saving energy and increasing the economic benefits of enterprises. The compressed air system is the fourth most widely used energy source in the industrial field. It is also an expensive energy source. Its energy consumption accounts for about 1%-40% of its total energy consumption in most plants. Especially the running cost is high. Energy costs account for about 75%. The data shows that many energy-saving systems can achieve more than 10% energy-saving effects through energy-saving retrofits, such as application network optimization technology, frequency conversion technology, pressure control technology and central control technology. Of course, each compressed air system is different, and the applicable energy-saving technologies are also different. The application of the technology should be based on a comprehensive analysis of the dynamic characteristics of the system, and it is difficult to achieve the expected energy-saving effect by blindly implementing an inappropriate energy-saving technology. This paper introduces the compressed air system of Baosteel's medium and heavy plate branch. Through comprehensive testing and analysis, it proposes a solution and achieves certain energy-saving effects. Compressed air has three main purposes. The power uses compressed air as the energy to complete the work. The process uses compressed air to become part of the process. The control uses the instrument wind to stop, start or adjust the operation of the mechanical equipment. The equipment for producing compressed air is an air compressor, and the raw material is air, which produces different kinds of compressed air through different processes. In the process of production, some waste phenomenon occurs. This paper aims to reduce the waste of the compressed air system and maximize the benefits of the enterprise. 1 Analysis of the current situation of compressed air system According to the analysis of the three-year operation of the compressed air system of Baosteel's medium and heavy plate branch, it is concluded that the energy consumed by the compressed air system is significantly higher than the actual amount of energy consumed, and the leakage and system pressure fluctuations are too large. The operation pressure of the pipe network is large and the incorrect use consumes about 50% of the compressed air. The specific situation is as follows: Through the test of the system flow, it is found that when the production of the wind is stopped, the system still has the flow value and is relatively stable. This part of the flow is basically caused by system leakage. The energy consumption of the compressed air system is proportional to the supply pressure of the system. The higher the system supply pressure, the greater the energy consumption of the air compressor. The energy consumption of the compressed air supply is increased by about 7% for each air compressor. 8%. The minimum pressure fluctuation of the compressed air system must meet the most demanding pressure requirements of the system, that is, the minimum value of the system pressure fluctuation is higher than the maximum value of the process demand pressure. Through the analysis of the system flow, pressure and air compressor power curve, it is found that since the flow and pressure changes of the compressed air system are a dynamic process, the working state of the air compressor not only has its own inefficient work, but also leads to The system pressure fluctuates drastically, which not only leads to a decrease in system efficiency, but also sometimes affects the reliability of the process, resulting in a certain scrap rate or process efficiency. 13 The air moisture entering the compressor is better than the nine factors affecting the efficiency and quality of the compressor. From the perspective of energy saving and system reliability improvement, the more stable the system pressure, the higher the reliability of the system and the lower the energy consumption of the system. The greater the range of system pressure fluctuations, the higher the average supply pressure of the system and the higher the energy consumption of the system. From the curve of system pressure versus time, it can be seen that the minimum pressure of the system is only 6 kg when the gas is in the highest state, and the maximum pressure is as high as 8 kg. The system pressure fluctuation range is as high as 2 kg, while the previous pressure has been nearly 8 kg. Operates under pressure. This shows that the system has a large energy-saving space on the premise of meeting the process requirements, and also shows that the system supply pressure has a certain downward adjustment space under the premise of meeting all process requirements. Test system leaks can be measured by direct testing of system flow, determination of the upper download cycle of the air compressor, and testing of system pressure. System leak control methods include preventive leak detection and repair, application of throttling equipment, and cutting off unnecessary supply of air. The pressure loss of compressed air depends on: cross-sectional area, flow rate, pipe length, and surface roughness of the pipe. Pipe diameter selection suggestion: When selecting the size of the main pipe connected to the air compressor in the air compressor station, it is best to ensure that the flow velocity in the pipe does not exceed 6m/s. The size of the main pipe should be selected from the air compressor station to ensure that the compressed air flow rate does not exceed 9m. /s. The pipe size of the gas branch pipe should be selected to ensure that the compressed air flow rate does not exceed 15m / s. 23 Correct treatment of compressed air No matter which type of compressor, the airborne impurities and concentration of them Times. An air compressor with a rated gas production of 5 m3/min + 20 ° C, 70% relative humidity and 1 bar absolute pressure, the water input into the main line is about 30 liters during the 8-hour operating time. Approximately 20 liters of water accumulates in the aftercooler in the form of condensed water, at a post-cooler 7 bar gauge working pressure and an outlet temperature + 30. C. When the air is further cooled, the remaining 10 liters of cold water accumulate at the appropriate point of the air main line. The result is costly maintenance, repair and production losses. By adding a refrigerated dryer at the front end of the compressor to reduce the moisture content in the air, the cost can be reduced. For every 0.14 bar increase in system pressure, the system will consume 2% more compressed air. Increasing the pressure of the holes present in the air system increases the flow rate of air through the system. Both leaked and unregulated gas volumes are a potential component of the artificially assumed gas volume. Repairing the leak without controlling the pressure is not completely effective. The dynamic characteristics of the compressed air system are different. The comprehensive diagnosis of the compressed air system is the basis for the correct evaluation of the energy-saving space of the compressed air system. 2 The energy-saving measures of the compressed air system should be formulated according to the specific conditions of the system. Not every energy-saving measure is applicable in any system. 3 The system optimization plan should not only consider the high efficiency of the current system, but also consider the future development of the system, and the system efficiency is still efficient. The application of energy-saving measures has greatly improved the efficiency and life of the air compressor itself, avoiding a lot of waste. At the same time, after the series of measures are used, the compressed air system can achieve 20-50% energy saving effect. Compressed air is the most energy-consuming type of electricity, water and compressed air in the three basic power sources of the plant, accounting for 10% to 20% of the total energy consumption of the plant, of which 25% is wasted in leakage, and 15% is wasted in falsehood. Demand, which is directly related to production, is usually no more than 60%. In fact, compressed air is the most energy-consuming type of electricity, water and compressed air in the three basic power sources of the plant, accounting for about 10% to 20% of the total energy consumption of the plant. %, 25% of which is wasted in leakage, 15% is wasted on false demand, and is usually directly related to production, usually no more than 60%. However, the high efficiency compressed air system is a very professional pneumatic technology and engineering category. In addition, due to the lack of correct usage concepts and management data, the average user has no way to start, and it is a pity that they can only find and improve their opportunities. However, the high-efficiency compressed air system is a very professional air pressure technology and engineering area, and if it is done, it can ensure the maximum benefit of the enterprise. the company. Double Rollers Corn Thresher,Corn Husker Machine,Corn Peeling Machine,Maize Shelling Machine Hunan Xinta Machinery Manufacturing Co., Ltd. , https://www.china-agricultural-product.com