Adsorption stage: first, recording the initial pressures of
all vessels and adsorption tower. Second, turning on and off
the 5th valve port instantly, recording the pressures of e vessel
and adsorption tower when the pressure of adsorption tower
was kept. Third, repeating the second stage until the pressure
of the adsorption tower was in the range of 1.45 to 1.60 kPa.
The calculation of adsorption capacities:
Cad = Vad/(22.4×mad) (1)
Vad = V ×P5−Vde×Pad (2)
Cad: adsorption capacity; Vad: adsorptive volume; mad: adsorptive
quality; V : volume of the adsorptive tower; Vde: dead
volume of the adsorptive tower; P5: pressure difference of
e vessel; Pad: pressure difference of adsorptive tower.