Environmental Engineering Reference
In-Depth Information
Temperature 900
C
Temperature 1000
C
Temperature 1100
C
Reaction
time
Deriv.
weight
Deriv.
weight
Deriv.
weight
Weight
Weight
Weight
(%.min
−1
)
(%.min
−1
)
(%.min
−1
)
(Min)
(%)
(%)
(%)
0
20.89
0.3808
21.24
1.261
20.36
1.726
0.56
20.59
0.641
20.47
1.377
19.42
1.645
1.12
20.22
0.6602
19.70
1.375
18.51
1.616
1.68
19.85
0.6716
18.93
1.376
17.61
1.599
2.24
19.47
0.6779
18.17
1.367
16.72
1.581
2.8
19.09
0.6772
17.40
1.361
15.84
1.568
3.36
18.71
0.6728
16.64
1.345
14.96
1.557
3.92
18.33
0.6696
15.89
1.346
14.09
1.547
4.48
17.96
0.6681
15.14
1.335
13.23
1.538
5.04
17.59
0.6596
14.39
1.320
12.37
1.525
5.60
17.22
0.6517
13.66
1.307
11.52
1.516
6.16
16.86
0.6451
12.93
1.299
10.68
1.496
6.72
16.50
0.6361
12.21
1.277
9.843
1.488
7.28
16.14
0.6267
11.50
1.266
9.014
1.472
7.84
15.79
0.6178
10.79
1.262
8.188
1.468
8.40
15.45
0.6086
10.09
1.246
7.369
1.452
8.96
15.11
0.5972
9.394
1.238
6.562
1.433
9.52
14.78
0.5897
8.704
1.235
5.768
1.402
10.08
14.45
0.5814
8.017
1.220
4.992
1.366
10.64
14.13
0.5714
7.334
1.223
4.246
1.294
11.2
13.81
0.5646
6.648
1.227
3.546
1.193
11.76
13.50
0.5537
5.961
1.227
2.924
1.010
12.32
13.19
0.5426
5.280
1.206
2.434
0.7071
12.88
12.88
0.5384
4.610
1.186
2.141
0.3438
13.44
12.59
0.5286
3.972
1.070
14.00
12.29
0.5166
3.429
0.8759
14.56
12.00
0.5138
2.981
0.7302
15.12
11.71
0.5110
2.620
0.5557
15.68
11.43
0.5023
2.361
0.3776
16.24
11.15
0.4987
2.189
0.2435
16.8
10.87
0.4919
2.074
0.1675
17.36
10.6
0.4880
2.000
0.1014
17.92
10.33
0.4844
1.957
0.05572
10.7
For Example 10.2, check whether the criterion for negligible intraparticle
heat
mol
− 1
transfer limitation is fulfilled. Take
Δ
r
H = 227.5 kJ
and E
a
=
mol
−1
.
Assume the gas properties are those of pure nitrogen at 900
C.
These are
220 kJ
m
− 1
K
− 1
,
m
− 3
, and c
p
= 1.199 kJ
K
−1
.
ρ
λ
= 0.074W
= 0.2875 kg
kg
10.8
Supercritical water has a high density and is a highly nonideal gas state. At
24.0 MPa and 380
C, calculate the density according to ideal gas law. Also
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