The Continuous-flow iodine adsorption system
Iodine adsorption experiments on the aged Ag0Z were
performed with the continuous-flow adsorption system shown in Figure 2
to quantify the impacts of off-gas streams on the iodine adsorption
capacity of aged Ag0Z. 50 ppmv of iodine vapors were
generated from the dynacalibrators (VICI, model 450 and 500) by
controlling flow rates of the carrier and dilution gas stream (dry air)
at 500 ml/min. The aged Ag0Z were loaded on a screen
pan in a single layer inside adsorption column wrapped with glass coil,
through which the flowing I2 vapor was pre-heated at 150oC. The aged Ag0Z samples were
exposed to 50 ppm of gaseous iodine at 150 oC, and
then the mass change of the aged Ag0Z samples was
measured by a microbalance connected with a screen pan inside adsorption
column.