GrainPro Gas-Hermetic Fumigation Self Verifying Cocoon, Instruction Manual, Page: 14 / 24

14/24
GrainPro
®
Gas-Hermetic Fumigation/Self-Verifying Cocoon™ Instruction Manual MA2021TDB1199-19
5.9.
PROCEDURE FOR PURGING CARBON DIOXIDE (CO
2
)
5.9.1.
Calculation:
a.
Total Volume – Volume Occupied by the Commodity.
b. For every 2.0kg of CO
2
replaces 1 cubic meter of air.
c. Additional 15% will be added to the total capacity.
d. Formula: (1-Bulk Density) x Volume x 2 x 1.15.
COMMODITY BULK
DENSITY
AMOUNT OF CARBON DIOXIDE (CO
2
) FOR PURGING, kg
5MT 10MT 20MT 50MT 100MT 150MT 300MT 320MT
MT/m
3
7.50 15.0 30.0 78.32 150.0 227.0 414.0 856.0
Barley 0.62 7 13 23 68 131 198 362 750
Cashew nuts 0.50 9 17 30 90 173 261 476 987
Chia seeds 0.68 6 11 19 57 110 167 304 630
Chickpeas 0.74 4 9 16 47 90 136 248 513
Cocoa beans 0.56 8 15 26 79 152 230 419 868
Coffee beans 0.59 7 14 25 74 141 214 390 809
Cotton seed 0.40 10 21 36 108 207 313 571 1184
Cowpea 0.75 4 9 15 45 86 131 238 493
Maize 0.72 5 10 17 50 97 146 267 553
Millet 0.63 6 13 22 67 128 193 352 730
Mung bean 0.75 4 9 15 45 86 131 238 493
Oats 0.43 10 20 34 103 197 298 543 1125
Paddy 0.60 7 14 24 72 138 209 381 789
Paddy, rice
bran 0.55
8 16 27 81 155 235 428 888
Peanuts,
shelled 0.64
6 12 22 65 124 188 343 710
Rice, milled 0.80 3 6 11 32 62 94 171 355
Rye 0.72 5 10 17 50 97 146 267 553
Sesame 0.59 7 14 25 74 141 214 390 809
Sorghum 0.72 5 10 17 50 97 146 267 553
Soybean 0.75 4 9 15 45 86 131 238 493
Sunflower 0.41 10 20 35 106 204 308 562 1164
Wheat 0.77 4 8 14 41 79 120 219 454
5.9.2. CO
2
application:
a. Make sure that enough CO
2
is available on-site. The weight of the CO
2
in the cylinder is
supplied by the industrial companies (i.e. 22 kg standard capacities which may be used to
calculate the number of cylinders required). CO
2
cylinders are available with or without
siphon (dip tube). For rapid flushing, the cylinder without siphon should be inverted.
b. For rapid flushing, the cylinder should
be inverted using mechanical inverter.
However, the cylinders with siphon
should be in upright position during
flushing.
c. If a mechanical inverter is not
available, a makeshift inverter can be
made using sand bags or other
improvised technique. The cylinder
should be inverted with its top resting
on one sand bag and the bottom end
resting on pile of two or three
sandbags high.