Process optimization and energy saving design of Zheng Lei Sun Honggang, the compressed air system 2, 11. sheep today Yucheng sun Cuicui Textile Co. Ltd, Shandong Dezhou 251200; 2. Luyin investment group, the scope of Shandong Ji'nan 2500013 kinds of different air compressor, the screw type air compressor with superior performance, high efficiency, has been widely used in chemical, food, medicine, textile and other industries. In addition, the overall space further compression station design, further analysis on the gas tank, filter, cold and dry machine equipment selection, pointed out that energy-saving technical points should be noted in the project design, illustrates the significance of process of compressed air and energy saving design of lowering the efficiency of enterprises.
On the basis of quality, the textile industry, once the first production factor and the pillar industry of the national economy, is gradually decreasing. Its main reasons are the intensification of industry competition, the decline of industrial profit rate and the reduction of the proportion of national economy. In recent years, the difficulties of Chinese textile enterprises in the market competition are obvious. In addition to the fierce competition factors in emerging markets such as India and Vietnam, there are also reasons for the rising cost of their own businesses and the overall quality of their personnel. Therefore, the textile enterprises should always grasp the main line of reducing the cost while paying attention to the market development and the product innovation. Compressed air equipment is mostly used for textile enterprises auxiliary facilities, how to use this kind of equipment is the most economical, carry out energy-saving emission reduction and the reduction efficiency of small, but also corporate initiatives, so the optimization of compressed air supply technology is the embodiment of cost control.
1 the selection of air compressor at present, we use 3 kinds of air compressor mainly: piston type, screw type, centrifugal type. In general, the 3 air compressors, hereinafter referred to as the air compressor, have their own advantages in equipment management and energy consumption control.
Point. Below we choose the host from the performance of the 3 hosts, the cost of use, and so on.
1.1 different air compressor performance and characteristics by comparing Table 1 we can see that the piston type air compressor has low price, high efficiency, strong structure advantages, but also has the piston exhaust pulse, large amount of maintenance, compressed air containing water, easy automatic control level is low, as used in the harsh environment, compressed air quality requirements low a place, such as the mining environment; screw type air compressor for continuous exhaust, although flow regulated by certain limit, but also because of high efficiency, without using fuel driven, high quality compressed air, although the price is more expensive, but less maintenance, the use of low cost, widely used in food, medicine, military, machinery, textile and other industries; centrifugal compressor in all aspects of the advantages are obvious, but because of the scope of application of flow regulation scope is small, efficiency is too low Small, such as store opening, wedding and other inflatable compressors.
1.2 comparison of the use cost of different air compressor because of the centrifugal air compressor itself has the insuperable shortcomings, so the application in the industrial system is relatively small. Below we mainly compare the cost of the two kinds of piston and screw type air compressor with the same power.
In Table 2, we can see the same power screw and piston compressor in power consumption, screw type piston was significantly more than the consumption of main table 13 characteristics of air compressor main characteristics of piston type screw type centrifugal exhaust pulse form continuous small displacement larger flow regulating range of /%0~10040~10070~100 structure in the form of small size the basic requirements of light solid slight noise /dB90 (A) 85 (A (full cover 85 (A (full cover high efficiency is low cost high level maintenance and small automatic level high table use cost comparison analysis of 2 air compressor type 22kW screw type air compressor 22kW piston compressor gas production index of low and high voltage 0.75MPa exhaust volume / (n3min-) 3.52.3 month average consumption of 80006600 / month average fuel consumption of /kg3.5 hydraulic oil ,25 years average maintenance cost 15005000 yuan / year equivalent to 7000065000 yuan / total consumption of electricity; but because. The rod air compressor has fewer failures and lower maintenance costs, and the exhaust efficiency is about 1.5 times that of the piston type air compressor, while the annual total consumption cost is only 1.08 times that of the piston air compressor. Therefore, the comprehensive use cost of the screw air compressor is lower.
1.3, through the above analysis, no matter from the performance or from the cost of air compressor, screw air compressor is a reasonable choice. With this qualitative determination of the host, the next important task is to determine the number of hosts in the plan, that is, our quantitative analysis, in order to design the optimal design plan. In line with the maximum production requirements, to achieve uninterrupted gas supply of air compressor, we at design time, must fully consider the air compressor breakdown maintenance, maintenance and other related factors, so it is usually in determining the host number according to the exhaust is higher than the rated capacity of 12 units in the host configuration, in order to realize the alternation of gas or maintenance substitution between the host.
2 other equipment selection 2.1 gas storage tank of the selection of gas tank capacity should be taken from all air compressor per minute total of 30% of the total exhaust configuration. There is no strict regulation on the number of gas storage tanks, and the corresponding quantity of gas storage tanks should be configured in accordance with the actual demand for gas supply. Generally speaking, in order to ensure the stability of the gas supply pressure and the convenience of maintenance, we insist on a principle in the configuration of the gas storage tank: to ensure the capacity of the gas storage tank.