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% yield of charcoal depending on the raw materials used

Depending on the parameters of the raw materials used for pyrolysis, method of the process comduction and the required amount of non-volatile carbon, the percentage yield of charcoal from the raw material varies.

In order to calculate the yield of charcoal from the given raw material, it is necessary to use the data of the Tables 1, 2 and the following formula:

CHARCOAL OUTPUT = LOADED WEIGHT OF ABSOLUTELY DRY RAW MATERIAL * PERCENTAGE OUTPUT

For example: 630 kg / hornbeam * 0.401 (40.1%) = 252.63 kg / charcoal

Firewood and Charcoal

Table1

 Dependence of the yield of charcoal and volatile components on the carbonization temperature
Final temperature, °С Charcoal
output, mass. % Carbon content, mass.%
370 40,1 75,5
380 39,1 77,5
390 38,6 78,5
400 38,1 79,5
410 37,6 80,6
420 37,1 81,7
430 36,6 82,8
440 36,1 83,9
450 35,6 85,1
470 35,1 86,3
500 34,6 87,6
530 33,6 90,2
800 27,1 96,0

Table 2

Volumetric weight of various raw materials for pyrolysis
Name of wood Weight of absolutely
dry wood, kg/m3
1 Hornbeam 630
2 Oak, maple, ash 550
3 Larch, elm 520
4 Birch 500
5 Pine, aspen, linden, spruce 400
6 Poplar 380
7 Pini-kay briquettes, p=1,3 1235

* The percentage yield of charcoal can change decreasingly, depending on the region, terrain, season and method of conduction of drying / pyrolysis processes.

Charcoal from firewood Charcoal from firewood

See the description of the charcoal kilns:

CK-2 EURO
CK-3 EURO
CK-4 EURO

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