Air compressor residual hot water utilization

Oil leakage problem. Cooling water circulation line (for example), as shown in the figure, the water quality meets the bathing water requirements.

Oil outlet heat control valve oil cooler after cooler oil inlet *e system water outlet water inlet air inlet air outlet air compressor cooling water circulation. 2 Water temperature and water quantity problems The two most important problems in the reconstruction of residual hot water are: water quantity and water temperature can not meet the requirements of employees' bathing water. According to air compressor operating parameters, Liuzhou Fidelity 89m3 air compressor cooling water outlet temperature is 50 °C. The cooling water consumption is 1751m3/h; the cooling water outlet temperature of Fusheng 40m3 air compressor is <43°C, and the cooling water consumption is 6.48-25.2m3/h. It is open for 6 hours every day, no hot water for the first hour. Calculate the minimum amount of hot water: open the 89m3 air compressor alone to 85m3, open two 40m3 air compressors to 32. 4m3. The mining area takes about 130 people per day, press 0. time 20 minutes), need hot water 26m3. Therefore, the amount of water meets the requirements. The water temperature from May to October also meets the bathing requirements. When the weather is cold, due to the large heat loss of the pipeline, the residual hot water temperature can not be used for bathing, but the residual hot water can be heated in the steam after being driven into the water storage tank. Compared with the cold water, the coal consumption is significantly reduced.

1.3 Will it affect the normal cooling of the main engine and cause the exhaust gas temperature to be too high. According to the technical description of the Fusheng air compressor, the higher the exhaust temperature, the shorter the service life of the lubricating oil. When the exhaust gas temperature is 82X: or less, it can run for up to 4000 hours, and when the exhaust gas temperature reaches 93 °C and above, it can only run for 1000 hours.

Daily monitoring air compressor exhaust temperature is about 83 °C, manufacturers maintenance personnel told the air compressor exhaust temperature as long as it is not maintained at 87 ° C for a long time, the lubricant can reach the normal service life, so as long as the remaining hot water is not guaranteed More than 871C, that is, meet the requirements.

In order to solve the problem that the exhaust gas temperature may be too high to affect the service life of the lubricating oil, when the residual hot water is reformed, we can add a separate pipe to replenish the cooling water at any time, so that the exhaust temperature will not be too high, exceeding the empirical value. Affect the life of the lubricant After the actual transformation is completed, the exhaust gas temperature is stable at around 84 °C, which does not exceed the maximum temperature given by the manufacturer.

It can be seen from the above three points that the waste water reform project is feasible, and the water quality, water temperature and water volume meet the demand, and the normal use of the air compressor is not affected.

Implementation of 2 Reheating Water Reconstruction Plan 2.1 Introduction The air compressor room is only a few tens of meters away from the boiler bucket. The 7K barrel is higher than the air compressor room. It is necessary to build a pool to collect the remaining hot water, and then use the chestnut to water. Hit the bucket for bathing.

2.2 Solution One air compressor has a cooling water recycling system. We can make a simple transformation in the circulating water pipeline to realize the residual hot water collection. Because the piston air compressor has oil leakage, the cooling water of the piston air compressor cannot enter the residual hot water collection tank. After installing the screw air compressor, the two piston air compressors are basically not opened, so they are disconnected. Two piston machines cool the water inlet and outlet pipes. Install the valve in the cooling water circulation pipeline. When the residual hot water is needed, close the circulating water pipeline valve, open the residual hot water valve, and lead the residual hot water to the collecting tank; when the residual hot water is not needed, open the circulating water pipeline valve to close the remaining A hot water valve that directs residual hot water to the cooling tower.

2.3 Option 2 The existing cooling water circulation system is not modified, and the cooling water inlet and outlet pipes of the two piston machines are not disconnected. A new dedicated hot water collection pipeline will be built to collect the remaining hot water from the three screw air compressors to the sump.

Compared with the above two schemes, the scheme 2 has a large investment, the pipeline is independent, and the control is complicated. It can be used as the transformation plan of the latter step; the scheme 1 has small investment, the pipeline is shared, and the control is simple, which is suitable for the current experimental transformation. The uranium mine technicians decided to adopt the 3rd expected economic benefit 3.1 The plan to invest in this program requires an investment of 39,300 yuan, of which the material cost is 14,000 yuan.

3.2 After the completion of the transformation of the program output plan, coal is not burned from May to October every year. The remaining half of the year is cold and needs to burn coal. According to the monthly consumption of 30 tons of coal, 180 tons of coal can be saved in the whole year. According to the current coal price of 930 yuan / t, the annual savings of 702,000 yuan. The total power consumption is 22.92kw, which is calculated according to the daily operation for 7 hours. The total annual electricity consumption can be saved by 1.44 million kWh. The above can be seen that the sub-project can be recovered after 7 months of use, and the benefits can be created in the same year.

4 Summary The re-use of residual air pressure in air compressors is in line with the major theme of national energy conservation and emission reduction. The experimental transformation of mines has been completed. The consumption of coal for uranium mines has been reduced for a year and a half. The bathing water meets the requirements and the operating costs of the mines are reduced, indicating that the scheme is successful.

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