Title:
ボイラプラント
Document Type and Number:
Japanese Patent JP5593100
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To increase a removal rate of mercury in exhaust gas without using a venturi scrubber.SOLUTION: Soot in exhaust gas generated by combustion of coal with oxygen-rich combustion gas is collected by a dust collector 5; sulfur oxides in the exhaust gas discharged from the dust collector 5 is removed by a wet type desulfurization apparatus 15; halogen or a halogen compound is added into the exhaust gas discharged from the wet desulfurization apparatus by an addition apparatus 37; the mercury in the exhaust gas discharged from the addition apparatus 37 is reacted with halogen or the halogen compound by a mercury oxidizing apparatus 39 to be thereby oxidized into mercury oxide easily soluble in water; moisture in the exhaust gas discharged from the mercury oxidizing apparatus 39 is condensed by a mercury removal apparatus; and the mercury oxide is absorbed in at least the condensate and is removed from the exhaust gas.
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Inventors:
Noriyuki Imada
Naoki Oda
Naoki Oda
Application Number:
JP2010061420A
Publication Date:
September 17, 2014
Filing Date:
March 17, 2010
Export Citation:
Assignee:
Babcock Hitachi, Ltd.
International Classes:
B01D53/64; B01D53/14; B01D53/50; B01D53/62; C01B32/50; F23C99/00; F23J15/00; F23J15/06
Attorney, Agent or Firm:
Hirotsugu Yoshioka