TY - JOUR
T1 - Characteristics of the removal of mercury vapor in coal derived fuel gas over iron oxide sorbents
AU - Wu, Shengji
AU - Azhar Uddin, Md
AU - Sasaoka, Eiji
N1 - Funding Information:
This work was supported by the Steel Industrial Foundation for Advancement of Environmental Protection Technology and 21th COE program of Okayama University.
PY - 2006/1
Y1 - 2006/1
N2 - The characteristics of a novel method for Hg removal using H2S and sorbents containing iron oxide were studied. Previously, we have suggested that this method is based on the reaction of Hg and H2S over the sorbents to form HgS. However, the reaction mechanism is not well understood. In this work, the characteristics of the Hg removal were studied to clarify the reaction mechanism. In laboratory made sorbents containing iron oxide were used as the sorbent to remove mercury vapor from simulated coal derived fuel gases having a composition of Hg (4.8 ppb), H2S (400 ppm), CO (30%), H 2 (20%), H2O (8%), and N2 (balance gas). The following results were obtained: (1) The presence of H2S was indispensable for the removal of Hg from coal derived fuel gas; (2) Hg was removed effectively by the sorbents containing iron oxide in the temperature range of 60-100 °C; (3) The presence of H2O suppressed the Hg removal activity; (4) The presence of oxygen may play very important role in the Hg removal and; (5) Formation of elemental sulfur was observed upon heating of the used sample.
AB - The characteristics of a novel method for Hg removal using H2S and sorbents containing iron oxide were studied. Previously, we have suggested that this method is based on the reaction of Hg and H2S over the sorbents to form HgS. However, the reaction mechanism is not well understood. In this work, the characteristics of the Hg removal were studied to clarify the reaction mechanism. In laboratory made sorbents containing iron oxide were used as the sorbent to remove mercury vapor from simulated coal derived fuel gases having a composition of Hg (4.8 ppb), H2S (400 ppm), CO (30%), H 2 (20%), H2O (8%), and N2 (balance gas). The following results were obtained: (1) The presence of H2S was indispensable for the removal of Hg from coal derived fuel gas; (2) Hg was removed effectively by the sorbents containing iron oxide in the temperature range of 60-100 °C; (3) The presence of H2O suppressed the Hg removal activity; (4) The presence of oxygen may play very important role in the Hg removal and; (5) Formation of elemental sulfur was observed upon heating of the used sample.
KW - Coal derived fuel Gas
KW - HS
KW - Iron oxide
KW - Removal of mercury vapor
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U2 - 10.1016/j.fuel.2005.01.020
DO - 10.1016/j.fuel.2005.01.020
M3 - Article
AN - SCOPUS:27844517898
SN - 0016-2361
VL - 85
SP - 213
EP - 218
JO - Fuel
JF - Fuel
IS - 2
ER -