Table 3 Technical analysis of samples
Moisture Wa, %
Ash content, %
Out of volatile substances%
Sulfur content Sd, %
Aa
AD
Va
Vd
Vdaf
0.2
40
40.1
2.9
2.9
5.8
0.43
Comments: The material is almost completely dry
After determining the release of volatiles visually you can see more light particles
in the sample. That is essentially the "bare" particles that were contained carbon. Out
of volatile substances is small. So, we can say that the product (sample) natural and
artificial - obtained from natural raw materials.
The sulfur content should be considered taking into account the small release of
volatile substances. Then the number of sulfur compounds can say as big. I should add
that in the determination of three samples on sulfur content, one sample showed a value
of 0.1%, but it was thrown out of the calculations, since moved beyond the controversy.
Investigation of the source material (coal grade T). Table 3 provides a technical
analysis of the sample. Presented final results of calculations of parallel samples.
Table 4 Technical analysis of samples
Moisture Wa, %
Ash content, %
Out of volatile substances%
Sulfur content Sd, %
Aa
AD
Va
Vd
Vdaf
1.6
32.7
33.7
7.3
7.4
9.7
3.86
The results show that coal is a high-likely, ordinary (unenriched) with low
humidity, low volatile matter and high sulfur fuel. Technical characteristics of primary
coal samples. An ultimate calculation results of the parallel tests (Table 5).
Table 5 Technical analysis of initial samples of coal
Of
coal
The size
of the
piece,
mm
Ash content,
%
The mass fraction, %
Out of
volatile
substances
%
The heat of
combustion,
kcal / kg
Acc. Rep.
Moisture
Sulfur
avg
permissible avg permissible
T
0-100
33.7
37.0
5.2
6.0
2.8
3.3
8.8
8550
In the technological chain of quality of coal must meet quality standards (tab. 6).
Table 6 Acceptable standards of quality indicators
Class
Ash content, %
Moisture%
Out of volatile
substances, %
The low heat of
combustion, kcal / kg
When loading on energy
0-100
Less than 31.5
Less than 6.0
8.0
At least 5200
Determining the highest combustion heat by burning a bomb calorimeter.
Description laboratory flowchart.
Experimental device CC-2 to determine the heat of combustion of solid and
liquid fuel consists of the following parts and components (Figure 3).
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