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Title:
ASH MELTING FURNACE AND ASH MELTING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/1999/050600
Kind Code:
A1
Abstract:
An ash melting furnace capable of a high-efficiency, stable operation and accommodating load variations, which is used for mixed melting for heating and melting main ash and flying ash as burned ash simultaneously, characterized in that main ash (coarse grain ash) in an upper layer and flying ash (fine grain ash) in a lower layer are supplied in layers from one end of the furnace body and heated and melted by a burner while being moved to the other end, whereby enabling the burner, when an oxygen enriched burner is used, to properly control an oxygen amount added to air (concentration change included) and, in response to a heated and melted ash condition caused by the combustion of the oxygen enriched burner, to properly control, in addition to fuel supply amount, an ash supply amount as required by a change in the oxygen enriching concentration.

Inventors:
Kitta, Takehiro (Mitsubishi Heavy Industries, Ltd. Yokohama Research & Development Center 8-1 Sachiura 1-chome Kanazawa-ku, Yokohama-shi Kanagawa, 236-8515, JP)
Takuma, Masao (Mitsubishi Heavy Industries, Ltd. Yokohama Research & Development Center 8-1 Sachiura 1-chome Kanazawa-ku, Yokohama-shi Kanagawa, 236-8515, JP)
Honda, Hiroki (Mitsubishi Heavy Industries, Ltd. Yokohama Research & Development Center 8-1 Sachiura 1-chome Kanazawa-ku, Yokohama-shi Kanagawa, 236-8515, JP)
Ose, Kimitoshi (Mitsubishi Heavy Industries, Ltd. Yokohama Dockyard & Machinery Works 12 Nishiki-cho Naka-ku, Yokohama-shi Kanagawa, 231-8715, JP)
Sato, Tetsuo (Mitsubishi Heavy Industries, Ltd. Yokohama Dockyard & Machinery Works 12 Nishiki-cho Naka-ku, Yokohama-shi Kanagawa, 231-8715, JP)
Ishikawa, Izuru (Mitsubishi Heavy Industries, Ltd. Yokohama Research & Development Center 8-1 Sachiura 1-chome Kanazawa-ku, Yokohama-shi Kanagawa, 236-8515, JP)
Shibata, Kenichi (Mitsubishi Heavy Industries, Ltd. Yokohama Dockyard & Machinery Works 12 Nishiki-cho Naka-ku, Yokohama-shi Kanagawa, 231-8715, JP)
Noma, Akira (Mitsubishi Heavy Industries, Ltd. Yokohama Research & Development Center 8-1 Sachiura 1-chome Kanazawa-ku, Yokohama-shi Kanagawa, 236-8515, JP)
Application Number:
PCT/JP1999/001501
Publication Date:
October 07, 1999
Filing Date:
March 25, 1999
Export Citation:
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Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD. (5-1 Marunouchi 2-chome Chiyoda-ku Tokyo, 100-8315, JP)
Kitta, Takehiro (Mitsubishi Heavy Industries, Ltd. Yokohama Research & Development Center 8-1 Sachiura 1-chome Kanazawa-ku, Yokohama-shi Kanagawa, 236-8515, JP)
Takuma, Masao (Mitsubishi Heavy Industries, Ltd. Yokohama Research & Development Center 8-1 Sachiura 1-chome Kanazawa-ku, Yokohama-shi Kanagawa, 236-8515, JP)
Honda, Hiroki (Mitsubishi Heavy Industries, Ltd. Yokohama Research & Development Center 8-1 Sachiura 1-chome Kanazawa-ku, Yokohama-shi Kanagawa, 236-8515, JP)
Ose, Kimitoshi (Mitsubishi Heavy Industries, Ltd. Yokohama Dockyard & Machinery Works 12 Nishiki-cho Naka-ku, Yokohama-shi Kanagawa, 231-8715, JP)
Sato, Tetsuo (Mitsubishi Heavy Industries, Ltd. Yokohama Dockyard & Machinery Works 12 Nishiki-cho Naka-ku, Yokohama-shi Kanagawa, 231-8715, JP)
Ishikawa, Izuru (Mitsubishi Heavy Industries, Ltd. Yokohama Research & Development Center 8-1 Sachiura 1-chome Kanazawa-ku, Yokohama-shi Kanagawa, 236-8515, JP)
Shibata, Kenichi (Mitsubishi Heavy Industries, Ltd. Yokohama Dockyard & Machinery Works 12 Nishiki-cho Naka-ku, Yokohama-shi Kanagawa, 231-8715, JP)
Noma, Akira (Mitsubishi Heavy Industries, Ltd. Yokohama Research & Development Center 8-1 Sachiura 1-chome Kanazawa-ku, Yokohama-shi Kanagawa, 236-8515, JP)
International Classes:
C03B5/00; C03B5/235; C21B3/04; C22B7/02; F23G5/00; F23G5/08; F23G5/44; F23G5/50; F23J1/00; F23J1/08; F27B17/00; F27D3/04; F27D3/08; F27D19/00; F27D21/02; F27D3/00; F27D15/00; F27D99/00; (IPC1-7): F23J1/00
Foreign References:
JPH09170744A1997-06-30
JPH09243337A1997-09-19
JPH02302509A1990-12-14
JPH06174222A1994-06-24
JPH08145327A1996-06-07
JPH09273736A1997-10-21
JPH1038249A1998-02-13
JPH09170742A1997-06-30
Other References:
See also references of EP 0990847A1
Attorney, Agent or Firm:
Takahashi, Masahisa (Ambassador Roppongi Buildings Room 1003 16-13, Roppongi 3-chome Minato-ku Tokyo, 106-0032, JP)
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