Environmental Engineering Reference
In-Depth Information
Table 4.10
Error analysis between the experimental and simulated results
Residence time
Experimental results
C
Hg
(ng/L)
Simulated results
C
Hg
(ng/L)
Errors (%)
2.36
4.8212
4.641028
3.74
3.06
4.2502
4.26598
0.37
4.02
3.8842
3.832197
1.34
6.07
2.9669
3.128889
5.46
9.8
2.4787
2.312036
6.72
Experimental errors could lead to significant deviations to the results of the
proposed model. The stability of the entire experimental system was analyzed. Four
different groups of experimental data were used as examples for the calculation of
the total experimental errors. The results are shown in Table 4.11. The results
showed that the total experimental error was insignificant, indicating the credibility
of the experimental results in this section as well as the reliability of the proposed
model were reliable.
Ta b l e 4. 11
Calculation of the overall error in the experimental system
Measurement
condition
No. 1
(ng/min)
No. 2
(ng/min)
No. 3
(ng/min)
Arithmetic
mean value
Standard
error
Condition 1
10.75
11.35
9.28
10.46
1.06
Condition 2
14.67
16.71
16.02
15.80
1.04
Condition 3
18.18
20.80
23.21
20.73
2.52
Condition 4
27.32
27.54
25.81
26.89
0.94
4.3.2 Reaction Kinetics Equation of Mercury in the Flue Gas
Based on the above results, the value of
was 1.78, and the value of
was 0.79.
Therefore, in the presence of HCl, the total reaction rate of the homogeneous
gas-phase oxidation of mercury could be expressed as
d
C
Hg
1.78
0.79
t
kC
C
(4-26)
Hg
HCl
d
As
E
a
=12787.54 J/mol,
A
=0.029858 (g/m
3
)
-0.78
·
ppm
0.21
·
s
-1
, the overall reac-
tion rate constant could be expressed using the Arrhenius formula given by
k
0.029858 exp( 12787.54 / (
RT
))
(4-27)
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