And auxiliary equipment is crucial for the company to save energy, and introduces a reasonable air compressor station process I plan. Air compressors are used as basic industrial equipment in metallurgy, machinery, mining equipment, agitation and gas control. Almost all industrial industries such as mountains, electricity, building materials, food grains, and textiles have a wide range of applications. In the cement production process, the classification of compressed air 1 air compressor is mainly used for conveying, unloading, material homogenization and dust removal of powder materials. There are three basic types of air compressors: energy saving (1) piston air compressor . Single screw type). (3) Centrifugal air compressor. The above three types of air compressors can be further divided into: air-cooled and water-cooled units, fuel injection and oil-free units. 2 Air compressors and auxiliary equipment selection Piston air compressors have a wide pressure range, which is especially suitable for medium and small flow applications with high pressure. It is still a widely used air compressor. The screw air compressor is suitable for low pressure and small flow, and the centrifugal air compressor is suitable for low pressure and large flow. The choice of air compressor size is determined by the two main parameters of the working pressure and flow (discharge) of the pneumatic system. 2.1 Selection of rated pressure of air compressor The rated pressure of air compressor should be slightly higher than the working pressure of pneumatic system. At present, the working pressure of the general pneumatic system is 0.50.8 MPa, so it is sufficient to use a low-pressure air compressor with a rated exhaust pressure of 0.7 I.OMPa. If there is special need, you can also choose air compressor with medium pressure (100MPa) or more. 2.2 Air compressor exhaust volume 的) The choice of exhaust volume is the main parameter of the air compressor. The air compressor should be matched with the required exhaust volume, and leave 10%~20%. margin. If the amount of gas used is large and the amount of air compressor is small, this will cause a large reduction in the exhaust pressure of the air compressor, and it will not drive the pneumatic equipment. Of course, it is not appropriate to blindly pursue large displacements, because the larger the displacement, the larger the motor of the compressor. Appropriate selection is beneficial to both the user and the air compressor equipment. Excessive selection is a waste of energy. Too small may cause the air compressor to be loaded for a long time. 2.3 Selection of gas storage tank The role of the gas storage tank in the air compressor station is to stabilize the pressure in the air pipe network, eliminate the periodic pulsation caused by the compressor working, and further separate the oil and moisture contained in the air. Dust, impurities, etc., while reducing the temperature in the gas path, can also reduce the load on the dryer. The correct choice of gas storage tanks is of vital importance to the air compressor. Usually, the size of the gas storage tank can be selected according to the matching selection table provided by the equipment manufacturer, or it can be determined according to the empirical method. The amount is divided by 8. 2.4 Selection of dryer and filter The processing capacity of the dryer and filter should be consistent with the displacement of the compressor. The dryer is divided into a freeze dryer (cold dryer), an adsorption compressed air dryer (dryer), and a deliquescent compressed air dryer. Among the above three compressed air drying apparatuses, the deliquescent compressed air dryer has been basically eliminated; and the most widely used ones are the dryer and the adsorption type compressed air dryer. The advantage of the dryer is that there is no compressed air consumption. When using the adsorption dryer, the compressor should reserve the corresponding compressed air consumption. The use of the dryer is more energy efficient than the use of the dryer. 3 Process layout of the air compressor station There are many technical layout schemes for the air compressor station, but the layout principle of the design scheme should be as compact as possible to save the building area under the conditions of convenient installation, maintenance, operation and management. And investment. For the specific design, please refer to the design specifications of the compressed air station. The process flow of the air compressor station is shown in the figure. Shut-off valve shut-off valve f± valve 丨 fan cut-off air compressor station process summary Air compressor is a relatively large power consumption equipment in the cement industry. It has long running time, large power consumption, large amount of cooling water. How to properly use air compressors and auxiliary equipment in the design is crucial for enterprises to save energy. With the increasing competition in the cement industry, the level of production costs determines the position of enterprises in the market competition. Therefore, how to take effective measures to reduce the energy consumed by the operation of air compressors is of great significance for improving the economic benefits of cement enterprises. Air compressor air tank dryer
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