(19)
(11) EP 0 866 271 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.07.1999 Bulletin 1999/29

(43) Date of publication A2:
23.09.1998 Bulletin 1998/39

(21) Application number: 97122209.6

(22) Date of filing: 16.12.1997
(51) International Patent Classification (IPC)6: F23G 5/30, F23G 5/46, F23J 7/00
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 18.03.1997 JP 64721/97

(71) Applicant: NKK CORPORATION
Tokyo 100-0005 (JP)

(72) Inventors:
  • Matsui, Satoshi
    Chiyoda-ku, Tokyo 100 (JP)
  • Iwasaki, Toshihiko
    Chiyoda-ku, Tokyo 100 (JP)
  • Yokoyama, Takashi
    Chiyoda-ku, Tokyo 100 (JP)
  • Kimura, Masanobu
    Chiyoda-ku, Tokyo 100 (JP)
  • Suzuki, Yasuo
    Chiyoda-ku, Tokyo 100 (JP)
  • Akiyama, Hajime
    Chiyoda-ku, Tokyo 100 (JP)
  • Noto, Takashi
    Chiyoda-ku, Tokyo 100 (JP)

(74) Representative: Henkel, Feiler, Hänzel 
Möhlstrasse 37
81675 München
81675 München (DE)

   


(54) Apparatus and method for recovering heat from fluid-bed type incinerator, and method for inhibiting production of dioxins


(57) A method for recovering heat from an incinerator, which comprises the steps of: removably arranging, in a fluid-bed type incinerator (11) having a fluid layer (15), a plurality of U-shaped heat transfer tubes (14) each having two vertical (19) tube portions and a bent tube portion (20) in the incinerator from a wall (13) thereof in a vertical direction so that the bent tube portion is immersed into the fluid layer; and passing a heat receiving medium sequentially through one of the vertical tube portions, the bent tube portion and the other of the vertical tube portions of each of the plurality of heat transfer tube, thereby recovering heat generated from combustion of wastes in the fluid layer via the heat receiving medium.






Search report