PSA nitrogen production by pressure swing adsorption principle Carbon molecular sieve can be simultaneously adsorbed oxygen i
PSA nitrogen production by pressure swing adsorption principle
Carbon molecular sieve can be simultaneously adsorbed oxygen in air and nitrogen, the adsorption amount with the pressure increased, and under the same pressure, oxygen and nitrogen adsorption volume showed no significant differences. Therefore, only by the pressure change is very difficult to accomplish the effective separation of oxygen and nitrogen. If we consider the adsorption rate, can make the oxygen and nitrogen adsorption properties effective to distinguish. Oxygen molecule diameter ratio of nitrogen molecules are small, so the proliferation rate than nitrogen quick hundreds of times, so the carbon molecular sieve oxygen adsorption speed is also very quick, adsorption of about 1minutes to reach more than 90%; while the nitrogen adsorption capacity is only about 5%, so that the adsorption was largely oxygen, while the rest of the large body of is nitrogen. So, if the adsorption time control in 1 minutes, can be a preliminary separation of oxygen and nitrogen, that is to say, adsorption and desorption by differential pressure to achieve, when elevated pressure adsorption desorption, pressure drop. While the classification of oxygen and nitrogen is adsorbed on both the speed difference, by controlling the adsorption time to achieve, time control is very short, oxygen and nitrogen adsorption has been fully, have not had time to stop adsorption, adsorption process. Thus PSA nitrogen to a pressure change, but also to the time control in 1 minutes.
Editor this paragraph nitrogen machine
Using air as raw materials, l using physical methods, in which the oxygen and nitrogen separation so as to obtain.
Industry has three kinds, namely the cryogenic air separation method, molecular sieve air separation method ( PSA ) and membrane air separation method
The role of PSA nitrogen production by pressure swing adsorption principle
