Title:
EXHAUST GAS PURIFICATION DEVICE AND TEMPERATURE CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2012/046580
Kind Code:
A1
Abstract:
The present invention is an exhaust gas purification device (1, 501) for purifying exhaust gas containing a combustible toxic component. This exhaust gas purification device comprises a plurality of heat storage chambers (13) which are each provided with a heat storage element (11) therein and provided with a pair of an air supply port and an air evacuation port (21, 23), a combustion chamber (15) which is formed to communicate with the upper parts of the plurality of heat storage chambers, air evacuation and air supply valves (17, 19) which are mounted to the air supply port and the air evacuation port of each of the heat storage chambers in order to perform switching between the supply of air to and the evacuation of air from the heat storage chamber, a heating burner (25) which is provided in the combustion chamber, a heat discharge damper (27) which discharges surplus heat from the combustion chamber, and a microcomputer (MC) which ignites/extinguishes the heating burner on the basis of a combustion chamber temperature (t1) and controls the temperature such that the combustion chamber temperature becomes a set value (SP) by adjusting the degree of opening of the heat discharge damper. This microcomputer determines whether early combustion, in which the temperature of exhaust gas rises to a self-burning temperature or higher when the exhaust gas passes the heat storage element, and the exhaust gas burns before arriving at the combustion chamber, is performed or not, when determining that the early combustion is performed, executes an early combustion countermeasure operation for forcibly opening the heat discharge damper and extinguishing the heating burner, and thereafter when determining that the early combustion is not performed, cancels the early combustion countermeasure operation.
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Inventors:
OZAKI TERUHIKO (JP)
OGI YOSHIHIKO (JP)
TORITA TOMOHIRO (JP)
SANO MICHINAO (JP)
OGI YOSHIHIKO (JP)
TORITA TOMOHIRO (JP)
SANO MICHINAO (JP)
Application Number:
PCT/JP2011/071641
Publication Date:
April 12, 2012
Filing Date:
September 22, 2011
Export Citation:
Assignee:
SINTOKOGIO LTD (JP)
OZAKI TERUHIKO (JP)
OGI YOSHIHIKO (JP)
TORITA TOMOHIRO (JP)
SANO MICHINAO (JP)
OZAKI TERUHIKO (JP)
OGI YOSHIHIKO (JP)
TORITA TOMOHIRO (JP)
SANO MICHINAO (JP)
International Classes:
F23G7/06; F23L15/02; F23N5/00
Foreign References:
| JP2001304531A | 2001-10-31 | |||
| JP2003130328A | 2003-05-08 | |||
| JP2002061822A | 2002-02-28 | |||
| JP2004077017A | 2004-03-11 | |||
| JP2008275383A | 2008-11-13 | |||
| JPH04270819A | 1992-09-28 |
Attorney, Agent or Firm:
TSUJII Koichi et al. (JP)
辻居 Koichi (JP)
辻居 Koichi (JP)
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Claims:
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