Analysis of the advantages of air compressor waste heat recovery application (2/2)

Air compressor waste heat recovery category

To a certain extent, the best maintenance method for air compressors is waste heat recovery, but do you know what types of waste heat recovery air compressors have? Air compressor waste heat recovery is mainly divided into two categories:

1. Air energy recovery

Air energy recovery is mainly achieved by absorbing the temperature of the compressed gas. After the air passes through the intake filter to filter out the dust or impurities in the atmosphere, it enters the compressor main engine through the intake control valve, and is mixed with the injected cooling lubricating oil during the compression process, and the compressed mixed gas is discharged from the compression chamber. into the oil and gas separation tank, so as to obtain high temperature and high pressure oil and gas respectively. Due to the requirements of the working temperature of the machine, these high-temperature and high-pressure oil and gas must be sent to their respective cooling systems. After the compressed air is cooled by the cooler, it is finally sent to the use system. The heat taken away is very small, generally 10%. about. After the high temperature and high pressure lubricating oil is cooled by the cooler, it returns to the oil circuit to enter the next cycle.

2. Waste heat recovery of air compressor oil

The waste heat recovery of the air compressor oil is mainly to add a heat energy converter to the oil return circuit of the air compressor. The effect of this heat energy converter is to convert the heat of the high temperature oil into the water, and the temperature of the water is raised for reuse. This process removes about 75% of the heat. The waste heat recovery equipment of the oil circuit is generally a heat energy converter, a water storage tank, and some other scattered equipment. At present, the main thing on the market is the waste heat recovery of air compressor oil, because this method has high heat recovery efficiency, this kind of air compressor waste heat recovery device is simple to install, occupies a small area, and belongs to high-tech products. Oil pipeline transformation: After the lubricating oil is separated in the gas-oil separator, the high-temperature lubricating oil is drawn out through the pipeline and enters the heat exchange equipment. In the heat exchange equipment, after exchanging heat with water, it is led out by the pipeline. In order to ensure the stable operation of the air compressor and avoid problems such as maintenance and overhaul of the heat exchange equipment, in the design process, another circuit, namely the bypass, is designed to directly connect the high temperature oil to the oil return end of the heat exchange equipment.

Because the connection of the power-saving equipment is equivalent to a water cooling project for the air compressor, the system can increase the gas production, reduce the temperature, reduce the load of the cooling system and reduce the oil temperature while generating hot water for free, so the air compressor can be extended. the service life of the machine. Because it does not consume any energy, there is no emission, so waste heat recovery is the most energy-saving, environmentally friendly, safe, and efficient way to obtain hot water.

One of the hygienic and convenient ways

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