Title:
BOILER
Document Type and Number:
WIPO Patent Application WO/2011/055814
Kind Code:
A1
Abstract:
In order that even when by-product gas generated in the production process in a steel plant is used as fuel for mixed fuel burning and the mixed fuel burning ratio increases, an electrostatic precipitator disposed downstream from a denitrification unit can be used, it is unnecessary to increase the pressure resistance strengths of an air pre-heater, a duct and the like which are disposed downstream from the denitrification unit, and thus the increase of the manufacturing cost can be suppressed, disclosed is a boiler (1) provided with a furnace (2), an economizer (3), a denitrification unit (4), and an air pre-heater (5), and configured such that by-product gas generated in a production process in a steel plant, as fuel for mixed fuel burning, can be fed into the furnace (2), said boiler being provided with a bypass duct (11) which bypasses the denitrification unit (4), a bypass damper (12) which is provided midway in the bypass duct, and opens and closes the flow path in the bypass duct (11), and a controller (13) which fully closes the bypass damper (12) when the mixed fuel burning ratio is less than a predetermined value and fully opens the bypass damper (12) when the mixed fuel burning ratio is the predetermined value or more.
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| JP2003120925 | EXHAUST GAS PROCESSOR OF WASTE DISPOSAL FURNACE |
Inventors:
KANEKO TAKUMA (JP)
TAKADA MASAHARU (JP)
TAKADA MASAHARU (JP)
Application Number:
PCT/JP2010/069792
Publication Date:
May 12, 2011
Filing Date:
November 08, 2010
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
KANEKO TAKUMA (JP)
TAKADA MASAHARU (JP)
KANEKO TAKUMA (JP)
TAKADA MASAHARU (JP)
International Classes:
F23J15/00; B01D53/94; F23C1/08; F23L17/00
Foreign References:
| JPH08258980A | 1996-10-08 | |||
| JPS5517019A | 1980-02-06 | |||
| JPS5955234U | 1984-04-11 |
Attorney, Agent or Firm:
FUJITA, Takaharu et al. (JP)
Takaharu Fujita (JP)
Takaharu Fujita (JP)
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