Multi-stage compressor
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This post was last edited by yxmqh on 2010-5-21 at 14:34. Does a multi-stage compressor require cooling equipment for each stage? What are the different cooling methods for compressors?
The need for cooling is related to the properties and temperature of the medium; if the compressed gas is below 0 degrees, cooling is clearly not necessary.
Inter-stage coolers and liquid separation tanks are required, as the compressed gas may also carry away the lubricating oil； The compressor cylinders and packing are also equipped with cooling water.
Yes, cooling equipment is required at each stage, with both water cooling and air cooling available.
Generally, inter-stage cooling is performed once for each stage.
Cooling is provided between the stages of the reciprocating machine. For centrifuges, temperature is important to consider. The hydrogen circulation pump (centrifuge) in the hydrogenation unit lacks cooling, while the rich gas compressor (centrifuge) in the catalytic unit is equipped with a cooler.
It depends on the outlet temperature of each compression stage; generally, inter-stage coolers are installed
Inter-stage coolers and liquid separation tanks are required, etc.; the cooling methods include water cooling and air cooling, and most cylinder coolers are equipped with water stations
The outlet temperature can be calculated based on the compression ratio, but the compressor manufacturer will take this into account for you
Reciprocating machines generally have coolers. Because the temperature rises a lot. If cooling is not applied, the temperature at the lower inlet will be very high. Gases are generally air-cooled. Cylinders are generally water-cooled. There are also reciprocating machines without cooled cylinders, usually with a small displacement. For example, GE’s do not have cold cylinders.
Not necessarily; it depends on the temperature of the compressed gas. There should be a heat exchanger in each section for heat exchange. Heat exchangers come in built-in and external types; the external types include shell-and-tube, double-pipe, plate, and shower types.