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my country is now vigorously calling for energy conservation and emission reduction across the country. What is energy saving and emission reduction? Energy conservation and emission reduction means saving energy, reducing energy consumption and reducing pollutant emissions. It is mainly aimed at various manufacturing enterprises, testing and evaluating energy consumption, and carrying out structural transformation and adjustment.

In the factory, air compressor and energy consumption are second only to electricity consumption. At present, the transformation of the motor has not progressed much, so the transformation of the energy consumption of the air compressor, the second largest energy after electricity, has become the top priority.

1. Manage leakage
The average leakage of compressed air in factories is as high as 20~30%, so the primary task of energy saving is to control leakage. All pneumatic tools, hoses, joints, valves, a small hole of 1 square millimeter, under 7bar pressure, lose almost 4,000 yuan a year. It is urgent to check the leakage of the air compressor pipeline and optimize the design of the pipeline.

2. Pressure drop management
Pressure gauges are set up in each section of the pipeline. Generally, the pressure drop from the outlet of the air compressor to the point of use in the factory cannot exceed 1 bar, and more strictly, it cannot exceed 10%, that is, 0.7 bar. The pressure drop of the cold-drying filter section is generally 0.2 bar. Check the pressure drop of each section in detail. If there is any problem, it must be maintained in time. (Each increase of one kilogram of pressure increases the energy consumption by 7%-10%).

3. Assess the pressure demand of gas equipment
In the case of ensuring production, the exhaust pressure of the air compressor should be lowered as much as possible. The cylinder of many air-using equipment only needs 3~4bar, and a few manipulators only need more than 6bar. (For every 1 bar lower in pressure, energy saving is about 7~10%).

4. Use effective high compressor
For variable working conditions, use air compressors with high efficiency, which is conducive to energy saving. At present, the domestic leading air compressor with high efficiency high, its efficiency high motor The motor is more energy-saving than ordinary motors; it has the advantages of constant pressure air, which will not cause pressure difference waste; It can save more than 20% energy than ordinary air compressors.

5. Centralized control
The centralized linkage control of the air compressor can avoid the stepped exhaust pressure rise caused by the parameter setting of multiple air compressors, resulting in waste of output air energy.

6. Reduce the air compressor intake air temperature
Because the internal temperature of the general air compressor station is higher than that of the outdoor, outdoor gas extraction can be considered. Do a good job in equipment maintenance and cleaning, increase the heat dissipation effect of the air compressor, the exchange effect of heat exchangers such as water cooling and air cooling, and maintain oil quality, etc., which can reduce energy loss.

7. Waste heat recovery
Air compressor waste heat recovery is generally the use of waste heat utilization equipment with high efficiency, which heats cold water by absorbing waste heat from the air compressor, without additional energy consumption. It mainly solves the problems of employees' living and industrial hot water, and saves a lot of energy for enterprises, thereby greatly saving the output cost of enterprises.