Environmental Engineering Reference
In-Depth Information
5.2 Experimental Research System for the Absorption of Hg
(g)
5.2.1 Introduction of the Mercury Adsorption Experiments
A fixed bed was used in the test system for the mercury adsorption mechanism. The
study focused on the influences of simulated flue gas composition, adsorption
temperature, different mercury inlet concentrations, etc., on mercury adsorption by
activated carbon. The diagram of the experimental mechanism is shown in Fig. 5.1.
Fig. 5.1
Diagram of the experimental mechanism
The simulated flue gas consisted of Hg
(g)
from a penetration tube and stand gases
of O
2
, CO
2
, N
2
, SO
2
, HCl, etc. The concentrations of each basic component in the
simulated flue gas are shown in Table 5.1. The mixture of O
2
, CO
2
, and N
2
was
labelled as “BL.”
Table 5.1
Concentrations of several basic components in simulated flue gas
Component
Hg
0
(g/m
3
)
O
2
CO
2
SO
2
(ppm)
HCl (ppm)
N
2
Concentration
6%
12%
0
400
800
1600
0
25
50
75
Balance
5
55
The sample analysis during the experimental process was conducted according
to the OH method. Under the same conditions, the stabilization and reliability of the
test system for the mercury adsorption mechanism in simulated flue gas was con-
ducted. The results of the four contrastive experiments are shown in Table 5.2. As
can be seen, the error fell within the permitted range, and the test system was stable
and reliable.
Search WWH ::
Custom Search