A. A. Bessonov et al.
Table 2. Technical parameters of effective work of the sorbents “Fizkhimin”TM.
Parameter
Valu e
Temperature of the filtered medium, ˚C 35
÷
145
Relative humidity of a filtered steam-air stream, % 1.5
÷
95
Linear speed of a stream of the filtered medium, cm/s 1.6
÷
16.3
Concentration of vola tile radioactive iodine compound s, g/m3 0.0003
÷
2.8
Quantity of radioactive iodine compounds on 1 m2
of filter cross- secti on, g 0.11
÷
400
Temperature of effective sorbent work, ˚C 30
÷
300
Temperature of the radioa ctive iodine desorption beginning, ˚C
600
Pressure difference on the 250-mm layer of the sorbent at temperature 20˚C and linear speed of dry air flow
1.6 cm/s, Pa 6
÷
9
Table 3. Sorption of the CH3131I on the granulated sorbent “Fizkhmin”TM based on Ag nanometric compounds from a steam-
air mixture.
The size of particles,
mm h, cm Tsorb,
˚C Tgas,
˚C RH,
% υ, cm/s τ, sec A degree of absorption on a
sorbent, %
IPCE-2
-"- 0.25 - 2.0
-"- 5.0
20.0 145
145 145
145 57.3
21.0 22.0
61.0 0.4
0.3 99.9994
99.9998
IPCE-1
-"-
-"-
3.0 - 6.0
-"-
-"-
45.0
37.5
22.5
35
110
180
35
110
180
95.0
16.9
16.3
5.0
8.0
9.0
8.8
4.7
2.4
99.8600
99.9995
99.9995
Notes: h-height of a layer of a sorbent in a column (the area of a column of 4.9 cm2), Tsorb-temperature of a sorbent; Tgas-temperature of a steam-air
stream; υ-linear speed of a steam-air stream in a column; τ-time of contact “a sorbent-a steam-air flow” (for all layer of a sorbent); RH-relative hu-
midity of a steam-air stream.
3. Conclusion
In conclusion, it is necessary to note, that the granulated sorbents “Fizkhmin”TM have very high sorptive effi-
ciency in a wide range of experimental parameters. Therefore, they can efficiently be used for localization of
volatile radioactive iodine compounds not only in passive filtering system, but also in other filtering devices, for
example in the filters of emergency pressure release from containment operational NPPs during severe acci-
dents .
4. Announcement
Work is supported by Council about grants of the President of the Russian Federation for the state support of
leading scientific schools of the Russian Federation (grant SS-5418.2014.3).
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