Title:
OPERATING METHOD AND OPERATION CONTROL APPARATUS FOR GASIFICATION MELTING FURNACE
Document Type and Number:
WIPO Patent Application WO/2008/038492
Kind Code:
A1
Abstract:
[PROBLEMS] 1. To realize high-efficiency operation of a gasification melting
furnace by cessation of an auxiliary burner and, at the same time, to avoid abnormal
combustion of unburned gas in reignition of the auxiliary burner. 2. To facilitate
the regulation of the basicity to a proper value without the need to use a special
analyzer for a slag composition in the operation of a gasification melting furnace.
[MEANS FOR SOLVING PROBLEMS] 1. In a gasification melting furnace, the operation
of a burner of the melting furnace is stopped when the operation state satisfies
a predetermined requirement. Thereafter, when the temperature in the vicinity
of the burner is lowered to a predetermined temperature, the supply of a waste
material from a dust feeder to the gasification furnace is stopped. This burner
is reignited when the concentration of oxygen in gas in the outlet of the gasification
furnace is increased by stopping the supply of the waste material to the gasification
furnace. 2. The basicity of slag discharged from a slag-discharge port in a melting
furnace is adjusted by supplying a basicity adjuster from an apparatus for supplying
the basicity adjuster. Correlation between a parameter corresponding to the
calorific value of the waste material per unit weight and the slag basicity is
used to determine the amount of the basicity adjuster supplied.
Inventors:
HOSODA HIROYUKI (JP)
MINAKAWA KOJI (JP)
ITO TADASHI (JP)
NIKAIDO HIROO (JP)
MINAKAWA KOJI (JP)
ITO TADASHI (JP)
NIKAIDO HIROO (JP)
Application Number:
PCT/JP2007/067003
Publication Date:
April 03, 2008
Filing Date:
August 31, 2007
Export Citation:
Assignee:
KOBELCO ECO SOLUTIONS CO LTD (JP)
HOSODA HIROYUKI (JP)
MINAKAWA KOJI (JP)
ITO TADASHI (JP)
NIKAIDO HIROO (JP)
HOSODA HIROYUKI (JP)
MINAKAWA KOJI (JP)
ITO TADASHI (JP)
NIKAIDO HIROO (JP)
International Classes:
F23G5/50; F23G5/00; F23G5/027
Foreign References:
| JP2004353944A | 2004-12-16 | |||
| JP2003302023A | 2003-10-24 | |||
| JP2006349218A | 2006-12-28 | |||
| JPH06159640A | 1994-06-07 | |||
| JP2004037049A | 2004-02-05 | |||
| JP2006029678A | 2006-02-02 | |||
| JP2001182924A | 2001-07-06 | |||
| JP2004037049A | 2004-02-05 |
Other References:
See also references of EP 2068081A4
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (2-2 Nakanoshima 2-chome, Kita-k, Osaka-shi Osaka, JP)
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