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PSA nitrogen production process

PSA nitrogen production process
The basic principle of PSA nitrogen production process is: the adsorbent (carbon molecular sieve) has different adsorption capacity on the adsorption medium under different pressures, and has selective adsorption characteristics for the components of the separated gas mixture under a certain pressure, so as to obtain the gas with certain purity. The factors affecting the purity of nitrogen in PSA nitrogen production process include the quality of feed gas, the working period of adsorption column, adsorption temperature and so on.
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Distillation is using the different boiling points of the two substances to condense the mixed steam and vaporize the mixed liquid repeatedly to achieve gas separation. For a mixed liquid composed of two substances with different boiling points, when the heat absorption part evaporates, the volatile components will evaporate more, while the mixed steam will give off heat and partially condense, the non volatile components will condense more. If the saturated steam with higher temperature is mixed with the saturated liquid with lower temperature, the steam will release heat and partially condense, and the liquid will absorb heat part of it evaporates. If after a round of partial evaporation and partial condensation, the steam and liquid with higher concentration will contact with the steam and liquid with different temperature respectively, and then partial condensation and partial evaporation will occur again. This process will be repeated for many times, and finally gas separation
Nov 11, 2020
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