Steam Compressor

LY type mechanical compressor performance parameter Sheet

The principle and function of steam compressor

Steam compressor compression form according to the principle of different, is a single stage centrifugal compressor driven by a whole gear device. According to different requirements of the form of the compressor is not the same, generally common have Roots compressor (volumetric type), centrifugal compressor (speed type) and so on.

The steam cooler is a specially designed nozzle that is mounted in the recovery steam tube. To turn as much water mist as possible into steam. The flow of water to the cooler is controlled by the temperature of the steam behind the cooler.

The lubrication system consists of an oil tank, two parallel water-cooled coolers, a parallel set of oil filters and two oil pumps. The main oil pump is a screw pump driven directly by a low speed gear shaft. The backup oil pump is driven by the motor and used at startup. An oil cooler is a tubular heat exchanger in which oil flows. The oil tank is equipped with an oil defromer and an electric heater. The lubricating oil is pumped from the tank to the gearbox through an oil cooler and an oil filter. The temperature of the oil is regulated by a temperature controller bypassed by the oil cooler. The oil filter has a differential pressure indicator to detect contaminants in the filter.

According to the direction of the fluid through the impeller of the steam compressor, the relevant equipment is called axial flow, mixed flow or centrifugal compressor. The most suitable type of compressor depends on the operating conditions of the relevant application. The key parameters are the pressure rise to be achieved and the flow rate of steam to be compressed.

In the evaporation industry, it is often operated in the vacuum range, the heating surface load is medium, the temperature difference is small, so the centrifugal type and Roots type compressor are usually used.

Steam compressors are mainly used in evaporation, crystallization, tower, drying and other chemical fields, the above industrial processes are also restricted by some factors. For example, drying, drying out of the low temperature exhaust gas, which contains a certain amount of air and other non-condensable gas and pressure

Shrinkage itself compression ratio and other factors cause the reduction of its recovery value.

On the other hand, due to the connectivity of condensable gases, steam compressors can also use solvent recovery in this aspect, such as methanol, ethanol, etc.