APPARATUS FOR REMOVING OF TRACE OF TOXIC SUBSTANCE FROM EXHAUST GAS AND METHOD OF OPERATING THE SAME

Title:

APPARATUS FOR REMOVING OF TRACE OF TOXIC SUBSTANCE FROM EXHAUST GAS AND METHOD OF OPERATING THE SAME

Document Type and Number:

WIPO Patent Application WO/2008/012878

Kind Code:

A1

Abstract:

An apparatus for removing of traces of toxic substances from exhaust gas, comprising, disposed in sequence from the upstream side in a flow channel of exhaust gas emitted from combustion equipment, a denitration unit including a denitration catalyst layer capable of removing nitrogen oxides from the exhaust gas and capable of oxidizing metallic mercury; an air preheater adapted for heat exchange between air for combustion in the combustion equipment and the exhaust gas; a dust removal unit having a bag filter containing a catalyst for metallic mercury oxidation; and a desulfurization unit for removing sulfur oxide from the exhaust gas. The bag filter may be disposed in advance of the desulfurization unit. Thus, there can be provided an apparatus for removing of traces of toxic substances from exhaust gas that is stable over a prolonged period of time and is highly reliable; and provided a method of operating the same.

Inventors:

NAGAI YOSHINORI (JP)
KATSUBE TOSHIO (JP)
MORITA ISATO (JP)
KIKKAWA HIROFUMI (JP)
KATO YASUYOSHI (JP)

Application Number:

PCT/JP2006/314744

Publication Date:

January 31, 2008

Filing Date:

July 26, 2006

Export Citation:

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Assignee:

BABCOCK HITACHI KK (JP)
NAGAI YOSHINORI (JP)
KATSUBE TOSHIO (JP)
MORITA ISATO (JP)
KIKKAWA HIROFUMI (JP)
KATO YASUYOSHI (JP)

International Classes:

B01D46/02; B01D53/64; B01D53/86; B01D53/94; B01J23/28

Foreign References:

JPH08196830A	1996-08-06
JP2006026525A	2006-02-02
JP2003024799A	2003-01-28
JP2004237244A	2004-08-26
JP2006205128A	2006-08-10
JPS50128681A	1975-10-09
JP2003053142A	2003-02-25
JPH1066814A	1998-03-10

Other References: