The application of waste heat recovery and utilization technology of screw air compressor â–¡ Sang Guangwen is necessary for the efficiency and productivity of the press. This paper introduces the application of the waste heat recovery and utilization technology of the rotary screw air compressor during the construction of the Xiadian Huaxiadian mine.
According to the statistics of the US Department of Energy, when the compressor is in operation, it is really used to increase the energy consumed by the air potential energy. Only 15 of the total power consumption is converted, and about 85 electric energy is converted into heat energy. Therefore, the heat recovery of the compressor is to continuously reduce the loss of the air system, which is a necessary means to improve the efficiency and productivity of the air compressor.
The design position of the main and auxiliary shafts of Xiadian Mine of Zhongping Nenghua Group is concentrated on the plane. The distance between the wells is about 150, and the vertical shafts are started. At the same time, during the construction of the well, the air compressor equipment is optimized. The rotary screw air compressor and waste heat recovery technology are adopted, which produces relatively good economic and social benefits during use.
The working principle of the screw air compressor The compression of the rotary screw air compressor is achieved by the simultaneous engagement of the main and auxiliary rotors in the cylinder. The main rotor has a spiral-shaped convex tooth 9 which is distributed with each other. The auxiliary rotor has a spiral groove which is mutually distributed with 60. The main rotor has a convex groove, and the air inlet is located at the top of the compressor cylinder near the drive shaft side. The port is on the opposite side of the bottom of the cylinder. When the rotor is not engaged at the suction port, air flows into the cavity of the main rotor teeth and the auxiliary rotor groove. At this time, the compression cycle starts. When the rotor is disconnected from the suction port, the air is enclosed in the main and auxiliary rotors. Within the cavity, and axially moving with the meshing rotor, as the meshing continues, more of the main rotor teeth enter the groove of the secondary rotor, the volume is reduced, and the pressure is increased. The injection cylinder pressure rises until the oil and gas mixture enclosed in the rotor cavity is discharged into the oil and gas tank through the exhaust port. Thereby, the reciprocating cycle of the suction compressed exhaust gas of the air compressor is realized. Due to the high-capacity compression assembly, the screw air compressor achieves high efficiency and high reliability due to its low outer ring speed and optimum oil filling.
Screw air compressor waste heat recovery system overview At the beginning of the project, we installed Taiwan Fusheng screw air compressor, model 32506 reverse, exhaust set 40.5 cubits 3, rated maximum exhaust pressure 0.
250 people. Three of them are equipped with waste heat recovery devices. Each unit uses a special transmission 0,1342 plate heat exchanger. The design test pressure is 1.01.3 elbow heat exchange area 4.8 m2, the design temperature is 0 tC, and the plate material is AISI 316. The high temperature oil is composed of oil and gas. The pressure in the barrel provides power and enters the plate heat exchanger after the thermal control valve to provide a heat source for the waste heat recovery system. The waste heat recovery system is equipped with a 20m3 water tank, and the low temperature water is filtered by the water filter. The 150125 pipe centrifugal pump is pressed into the plate and the thermal control valve of the screw air compressor system itself is used to make the waste heat recovery system become two independent complementary cooling systems. . When the system is running, the high-temperature oil passes through the plate heat exchanger. After the oil is exchanged in the plate heat exchanger, the oil temperature is lowered. After the cooling, the oil enters the thermal control valve of the air compressor itself, so that the heat valve does not move. The oil goes directly into the lubrication system. When the water temperature rises and the oil temperature drops to the set temperature of the temperature control valve, the air pressure control valve of the air compressor itself is opened, and the high temperature oil enters the air compressor cooler to cool.
Screw air compressor waste heat recovery and utilization technology principle Screw air compressor converts electrical energy into mechanical energy during long-term continuous operation, and mechanical energy is converted into wind energy. During the conversion of mechanical energy into wind energy, the air is strongly compressed by high pressure to make it temperature. Sudden rise, the high-speed rotation of the mechanical screw, and also frictional heat, these high heat generated by the addition of air compressor oil into a mixture of oil and gas discharged from the body, its temperature is usually 80 winter 100 summer and autumn. Due to the operating temperature requirements of the machine, these heat energy is discharged into the atmosphere as waste heat through the air cooling system of the air compressor.
The screw air compressor waste heat recovery system uses the principle of thermal energy conversion to convert the heat recovery from the air compressor into the water. After the water absorbs the heat, the water temperature will rise, which will lower the operating temperature of the air compressor unit. The operating efficiency of the air compressor is extended, and the service life of the air compressor is prolonged. The recovered hot water can also be used in the office of the employee's bathing water and the hot water in the production workshop, such as hot water for industrial use, thereby reducing the unit production cost. Improve the efficiency of the company.
Implementation effect of waste heat recovery technology of screw air compressor During the construction period, the project department installed 5 models of 3,600 people and 6 people Fusheng screw air compressor to provide compressed air for mine construction, and then installed 3 waste heat recovery systems. When the heat recovery system of the Taiwan Waste Heat Recovery System can increase the temperature of the water tank by about 17 tons per hour, the water tank can be increased by 5 to 6 per pack. This guarantees that each shift can provide 40 to 5 for the employees, and the bathing water is about 17 tons. In the winter, when the ambient temperature is relatively low, 12 waste heat recovery systems can be used to meet the hot water used in the bathhouse.
In the winter, due to the low outdoor temperature and the pouring of concrete in the vertical shaft construction, the concrete is mixed with cold water, the condensation time is relatively long, affecting the normal construction of the vertical shaft, and the waste heat recovery system is used. The water supply temperature of the water tank is 5 feet, and the remaining factors on the 31st page are compared. Many, the industrial system is still incomplete, and its main now is that the old-age industry is still an emerging industry, lack of understanding in the society, lack of strength and capital.
Many enterprises recognize that the investment risk of the elderly industry is high, the profit is low and the payback period is long, and they are not willing to invest too much. Some enterprises only supplement the old market as the original market of the enterprise, and have not conducted serious market research, resulting in supply and market demand. Not to inhibit industrial development. Yes, the current level of development of the elderly industry is not high, and the added value of the industry is low. On the other hand, the current elderly industry is mainly concentrated in the basic needs of living food and health care, and high value-added does not form a complete old-age industrial system. On the other hand, the current elderly industry is at the primary level of the overall industrial chain development, and product development and design are weak. Lack of industry standards and related policy support in the links, manufacturing and manufacturing.
Analysis of the development strategy of Jiangsu's old-age industry market The government actively guides and encourages the development of the elderly industry. The old-age industry is a sunrise industry in the 21st century, which has enormous business opportunities. Due to the misunderstanding of market understanding, the investment in the elderly industry is insufficient. The old-age market has not been highly valued by enterprises. However, in some markets with relatively fierce competition, investment has increased, resulting in serious waste of social resources and vicious competition. The development of the old-age industry is not only a way to achieve new economic growth points, but also an important way to achieve industrial structure transfer. In the context of an aging population, the government, as a market leader and manager, should actively attach importance to the development of the elderly industry. First, the introduction of preferential policies or funding to support the development of the elderly basic industries, such as supporting the construction and development of elderly medical institutions and elderly apartments to meet the basic needs of the elderly population, which is also the urgent need of the current, the use of financial aid credit priority tax relief Such means encourage the development of related industries in the elderly, such as the elderly service industry for the elderly, high-tech industry, etc., to promote the upgrading of the internal structure of the elderly industry. Thirdly, the establishment of investment promotion projects will encourage the development of old-age industries in flexible and diverse forms, such as public-owned private joint-stock joint ventures, to promote the rapid development of the elderly industry to meet the needs of the elderly market. In addition, the government can also establish special research on the elderly industry to provide decision-making reference for enterprises to invest in the elderly industry.
Give full play to the advantages of resources and establish a core old-age industry. Modern production factor resources such as institutional information management required for industrial development. Jiangsu Province is located on the eastern coast. It not only has abundant natural resources, but also has a leading level in the country due to its economic development. It has relatively advanced scientific and technological management information and other resources. In the development of the elderly industry, we must be good at using the advantages of regional resources, establish a core old-age industry, and then radiate into other industries. For example, tourism resources in the province are mainly concentrated in the southern part of the country. In the old-age tourism industry, Taicang and Rugao have the reputation of having a longevity town. They can consider developing into an old-age health base. After the heat recovery system on page 66, the hour It can be raised to 15 especially, and the water temperature of 10 can still be guaranteed by the pipeline input to the mixing station, which solves the problem of industrial use of hot water.
With the waste heat recovery system, the air compressor temperature during the operation is maintained at 78, especially 85, the oil vapor temperature is 65, especially 75, the entire air compressor system works in a good state.
The application of the waste heat recovery technology of the screw air compressor satisfies the hot water for the bathhouse and the industrial hot water during the construction of the well. The model of the coal vaporization and environmental protection steam boiler used on site is 610.4, the rated evaporation is set to 1 ton, the working pressure 4 elbow steam temperature 15. Calculated by this, it saves 600 coal for boilers every day. 8. At the same time, it does not use coal to reduce 302000; it also emits harmful gases and protects the atmosphere, which is environmentally friendly.
And launch the corresponding health products and ancillary services. On the other hand, we combine resource advantages with regional industrial advantages to establish an old-age industry with competitive advantages.
For example, the textile and garment industry in Changjiao can develop the old textile and garment industry bigger and stronger; the pharmaceutical industry in Wuxi Nanjing, Taizhou, Suzhou, is ahead of the province and can be extended to the field of geriatric medicine.
Divide consumer demand and tap into the elderly industry market. The old-age industry covers domestic services, socialized old-age old-age toys, old-age clothing, etc., but due to the special physiological and psychological characteristics of the elderly, the needs of the elderly are unique. In the development of the elderly industry, we must conscientiously do a good job in market segmentation, study the demand preferences of the elderly population and the characteristics of consumer behavior, and then invest in the relevant elderly industries in order to develop products and services that meet the needs of the elderly population. In the segmentation of consumer demand in the elderly market, the factors that need to be considered are the characteristics of the age of the elderly in the province. Through market segmentation, the difference between the needs of the elderly and other groups and the differences in the internal needs of the elderly can be studied to enable the elderly industry to develop positively.
Improve supporting facilities and build an industrial chain for the elderly. The competition in the modern market is no longer the competition between independent enterprises, but the competition of the entire industry chain. The development of any industrial chain is inseparable from the construction of corresponding supporting facilities. In product R&D and design, we actively arrange in the province, support the construction of several key elderly industry R&D centers, pay attention to technological innovation and transformation; in the production and processing links, formulate corresponding industry standards and laws and regulations, and strictly control the elderly products. Quality or service quality; in marketing and logistics, we can build a comprehensive old-age product trading center, pay attention to the cultivation and promotion of local famous brand products, and increase the added value and old age of the elderly industry through the construction of the old-age industrial chain and regional old-age industrial clusters. The overall level of development of the industry 1234 1. Huang Zuoyu. The impact of population aging on the social economy. Market and population points 2. Wang Zhanghua, Huang Liqun. Questions and suggestions on the status quo of China's aging industry. Macroeconomic Management, 2010, 1 3. Ni Haiqing. Analysis of the elderly consumer market in Jiangsu Province. China Marketing Communication Network 1tpI six electromechanical management air compressor installation, there should be enough maintenance space around, easy to use in the maintenance installation site ventilation is better, easy to fuse the body. Establish a management system, and each air compressor is used in a balanced manner to facilitate centralized maintenance and maintenance. Establish the maintenance time of the maintenance time filter coolant waste heat recovery device, such as descaling, master the important information of maintenance and adjustment, and obtain the best use effect of air compressor and waste heat recovery device. Establish a patrol inspection system to clarify the route of inspections to ensure safe operation.
In short, the use of rotary screw air compressor and waste heat recovery technology, easy to operate, provides a reliable power for mine construction, but also provides hot water bath for miners, energy-saving and environmentally friendly, with good economic and social benefits.
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