Problem of increased water content in high-purity gases after passing through a compressor, solution
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Everyone, the dew point of the hydrogen gas produced by our company can reach -70 after dehydration treatment. Why is the dew point only -45 after passing through the compressor? Is it due to the influence of the compressor oil?
1. Should an oil-free compressor be used? What is the pressure ratio? 2. Does dew point refer to normal temperature dew point or pressure dew point? What equipment is used to measure dew point? If the measured value is the pressure dew point, compressing high-purity hydrogen does not result in any condensation; instead, the partial pressure of water vapor in the gas increases, and as a result, the pressure dew point also rises.
The gas dew point temperature decreases as pressure increases