Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture
Reexamination Certificate
2007-12-24
2010-11-16
Vanoy, Timothy C (Department: 1793)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
C423S235000, C423S239100, C423S242100, C423S215500, C423SDIG018, C423SDIG018, C422S105000, C422S111000, C422S168000, C422S169000, C422S170000, C422S171000, C422S172000
Reexamination Certificate
active
07833501
ABSTRACT:
A method and apparatus for treating an exhaust gas comprising heavy metals, wherein the apparatus comprises a heat recovery unit, recovering exhaust gas heat at an exit of the air preheater; a precipitator, collecting soot/dust contained in an exhaust gas at an exit of the heat recovery unit; a wet flue gas desulfurizer, removing sulfur oxides contained in the exhaust gas at the exit of the precipitator; and a reheater, heating the exhaust gas at the exit of the wet flue gas desulfurizer. Each of the heat recovery unit and the reheater has a heat exchanger tube, and a circulation line is disposed to connect the heat exchanger tubes. A sulfur trioxide (SO3) removing agent is supplied to the upstream side of the heat recovery unit, and the temperature of the exhaust gas at the exit of the heat recovery unit is adjusted to not more than a dew point of sulfur trioxide.
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Ishizaka Hiroshi
Kikkawa Hirofumi
Kobayashi Kazuki
Nosaka Hiroyuki
Sasaki Goki
Babcock-Hitachi Kabushiki Kaisha
Greenblum & Bernstein P.L.C.
Vanoy Timothy C
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