The impact of compressor inlet temperature on the low-pressure cylinder
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The impact of the compressor inlet temperature on the low-pressure cylinder: The CO2 compressors in our plant are manufactured by Nippon Sharyo. Currently, CO2 is being generated for low-temperature applications, at a temperature of around 0 degrees. Please analyze the impact this has on compressors (those with knowledge of mechanics would be particularly helpful) There is a heat exchanger in the import section; due to the extremely low temperature of the CO2 supplied from the low-pressure methane plant (-16 degrees), the tube bundle was frozen and damaged, and it is now unusable. This post was last edited by lxq700918 on 2009-3-12 17:26.]
A heat exchanger should be added to recover the cold energy, which also helps to protect the compressor.
What was said on the 2nd floor is correct. However, our inlet heat exchanger cannot be used due to internal leakage; we have been using CO2 from low-pressure methane directly for 1 year now, and so far no issues such as an increase in the vibration levels of the low-pressure cylinder have been observed. I wonder if this has any impact on the rotor or impellers
As long as there is no issue with low temperature due to liquid CO2, it’s not a big problem; it also helps reduce the compressor’s power consumption and saves some steam. As for the thermal stress on the impeller and rotor, it is not a problem to maintain it at 0°C. If it’s at -16°C, then it won’t work:lol
It is best to add a heat exchanger to recover the cold energy, so that the compressor can operate under its designed conditions. The materials used for the compressor’s impellers, etc., are not designed for low temperatures; this is to prevent damage to the compressor if the temperature drops below 0 degrees due to improper operation, as that would result in significant losses.
It should have little impact. The key is that when using dry gas seals in the high-pressure cylinder, it is essential to pay attention to temperature control of the gas as well as the issue of liquid content. This post was last edited by lxq700918 on 2009-3-21 at 19:14.]