Coal Technology Research and Application of Air Compressor Waste Heater in Jidong Coal Mine He Dongsheng, He Zhenglin Yonggui Energy Development Co., Ltd., Guiyang 550001, the use of both, reducing energy costs and contributing to environmental protection.

Up to 1 000*. Therefore, the air compressor must have a heat sink when it is working, and the heat converted into electric power is discharged into the air. This is why a large amount of heat is generated in the air compressor.

1.3 Air compressor waste heat utilization host operation mode 0) The principle of waste heat utilization is: the water source only needs to be the cooling water outlet end of the air compressor (55* interface to the waste heat utilization host's inlet end, after the unit absorbs heat, it becomes The low-temperature water available for the air compressor is discharged to the air-cooling system of the air compressor for use by the air compressor. The middle of the air compressor room is not damaged. It only absorbs the heat discharged from the air compressor.

An air suction device is installed outside the air outlet of the air-cooled air compressor, and the hot air discharged from the air compressor (35* is introduced into the air-cooling heat absorber of the waste heat utilization host to absorb the heat in the hot air discharged from the air compressor After that, it turns into cold air (15* is discharged into the atmosphere, and it does not destroy any facilities inside the air compressor room. It is only heat absorption.

2 System design 2.1 System reliability requirements The waste heat utilization system only extracts the heat during normal operation, does not damage any facilities in the original system of the air compressor, and ensures that all facilities in the air compressor work normally without modification. .

2.2 System adaptability requirements The waste heat utilization host system is simple and convenient to install, and can be suitable for all kinds of new air compressor rooms and original air compressor rooms. Small footprint and flexible.

2.3 System Advancement Requirements 0) Using advanced high-speed embedded microprocessor, the performance is much higher than that of the single-chip microcomputer used in the same industry.

The main board adopts SMT surface mount technology and has a compact structure. The compressed air system is the most energy-intensive area in factories and mines. The energy cost of the compressor can exceed 10% of the total cost of the company's electricity. Most of the energy consumed by the compressor operation is converted into heat during the compression process and wasted.

For typical air cooling, 85% of the compressor energy flow is potentially recoverable energy, while only 15% is non-recyclable. The heat recovery system collects this heat for use, reducing energy costs and contributing to environmental protection. The heat recovery system includes: hot water for workers' living, preheating of boiler water, heating of factory buildings, and others.

1 Working principle 1.1 Using the inverse Carnot cycle principle to move heat from the low temperature zone to the local temperature zone is well known. Since it is a relocation, it takes a lot of effort to move items from the first floor to the 10th floor and from the 7th floor to the 10th floor. The same is true for the Novo cycle. It is also the production of 55* hot water. It takes a lot of heat to extract heat from the 10* heat source to 55U than to extract heat from the 35t~40U heat source to 55*, especially in winter. More obvious, the air compressor waste heat utilization host is using this feature to work to heat.

1.2 Air Compressor Heat Generation Air compressors consume a lot of electric power. For example, a 40m3 air compressor requires a motor configuration power of about 250kW. In theory, the air can be changed after being isothermally compressed. In fact, Most of it has become heat, which causes the temperature of the compressed air to rise sharply. If the heat dissipation method is not adopted, the temperature of the air can reach the low heat of the coal hair technology and the anti-interference ability is strong.

(3) Communication connection mode The data communication between the main and auxiliary boards can be easily realized by using one telephone line, which facilitates the installation and separation of the controller.

(4 hardware has self-diagnosis ability. It can automatically eliminate hardware failure, and the software uses redundancy, trap technology and hardware WATCHDOG to improve the overall anti-interference ability.

The power-off data save capacity, the memory chip used to store the parameters has good stability, and is reliable and not lost.

It can display 16 lines x 40 columns of 640 Chinese characters or 1280 characters.

0 by touching the LCD screen, advanced touch technology, touch screen light touch performance, continuous light touch life of more than 1 million times per point, to ensure the life of the whole machine.

*The unique screen saver system extends the life of the LCD screen to more than 10a, completely solving the problem of LCD screen life.

0 can check the actual temperature of each point at any time. Temperature curves for lh and Id can also be displayed.

(10) You can query current faults and historical faults. A statistical function with faults that can be used to analyze the unstable parts of the machine in order to be refined. Historical faults can be queried in three ways: fault number, number of faults, and fault occurrence time.

(11) There are remote remote control on and off, sub-timed on and off, weekly scheduled on and off, and up to 3 times per day.

The performance parameters of the remaining hot water utilization hot water unit using the hot water unit are shown in Table 1.

Table 1 Performance parameters of hot water unit Model rated input power / kW heating / 104x most local water temperature / ° C refrigerant power / V use ambient temperature norm / kg noise / dB external dimensions 4 Yudong coal mine waste heat utilization hot water Project Plan 5 Feasibility Analysis 5.1 Project Overview 0) Initial Project Overview: The pressure fan room of Jidong Coal Mine has 3 sets of 250kW air-cooled screw air compressors at the beginning, and 2 empty plan gas compressors for each shift. The East Coal Mine uses 1,500 people per day for hot water, and the daily hot water volume is 225t per 150L. After the formal production, the project has a total of 5 sets of 250kW air-cooled screw air compressors, and 3 sets of production per shift. Air compressor. After officially put into production, 2,500 people use hot water per day, and the daily hot water volume is 375t according to 150L per person. 17T:, the outflow of wind wells per minute is 1700~3 5.2 Bathhouse bath water waste heat recovery 0) Air compressor can be used every day The amount of heat supplied by the air compressor is the amount of heat that can be generated by the air compressor for the amine 35* temperature rise. The full load period is 45: (3) the amount of hot water that can be supplied in the bathhouse water one day (by 375t/h, by suction) The difference in thermal temperature is 20*) (4 baths of water provided by the daily heat can be produced by the hot water amine 35* air compressor and the waste water of the bathhouse water can be provided daily life air compressor and bathhouse hot water heat can meet 1 day 375t shower The need for hot water.

5.3 Power selection of main equipment According to the energy efficiency ratio of waste heat utilization, the heat required to produce 375t hot water per day is 54941250kjP=54 units of 4 units, which can meet the needs of 1 day 375t shower water heat, but considering the special situation of coal mine The system decided to use 5 sets of waste heat to use the unit to ensure the supply of hot water on the mine (4 units for 1 set of standby).

Coal Technology Based on LabVIEW for Fault Diagnosis Application of Coal Mine Machinery Equipment Wang Xingong\Wang Yanli 2 (L. Department of Computer, Zhangzhou Normal University, Luzhou 061001, China; 2. China Construction Bank Co., Ltd. Zhangzhou Branch, Hebei Luzhou 06100 (), finally proposed Specific methods for implementing system functions and some improvement measures.

0 刖 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 在 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 A comprehensive comparison of the cost of the main engine and the boiler (the electricity price is calculated at 0.6 yuan / kW.h.

0) Waste heat utilization host (4 working, 1 standby) 375t hot water production in winter, daily working time is 54941250kj + 62.8kWx+860+6=12.04h4 sets of residual heat utilization host rated input power is 9 sets of circulating water For the annual electricity cost of 1767.7 yuan x 365 * 64.5 million * la boiler costs Jidong coal mine according to the production of hot water 375t calculated calcination costs, coal mine machinery design and detection control is also difficult to achieve, so for coal mine machinery and equipment failure Research on diagnostic applications is very necessary.

Traditional instruments can not meet the requirements of modern technology, its precision is poor, the cost is high, the measurement and control cycle is long, and the virtual instrument is applied to the mechanical equipment. The annual coal cost is 3888.9 yuan x 365 = 1.419 million yuan. The annual boiler electricity cost is 433.623 million yuan. The annual salary of boiler workers is 7x2500 yuan x12=210000=210,000 yuan. The total cost of boilers is 1.419 million yuan + 43,000 yuan + 210,000 yuan = 1.672 million yuan (3). The cost of la is compared with 16.72 million yuan - 64.5. 10,000 yuan = 10.27 million yuan can be seen after the official use of waste heat to officially put into operation, the annual cost is less than the annual savings of 1.02 million yuan in boilers, including boiler annual inspection and other fees.

7 Conclusion The total investment cost is about 3.5 million yuan. The initial investment to consider Anyuan thermal low-carbon products may be slightly higher, but from the operational point of view, it will save back in a few years. And can save more than 1774 tons of coal a year, reducing carbon dioxide emissions (responsible editor Wang Xiuli)

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