(19)
(11) EP 1 002 995 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.11.2000 Bulletin 2000/48

(43) Date of publication A2:
24.05.2000 Bulletin 2000/21

(21) Application number: 99116686.9

(22) Date of filing: 26.08.1999
(51) International Patent Classification (IPC)7: F23G 5/16, F23J 3/04
(84) Designated Contracting States:
AT BE CH CY 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: 10.11.1998 JP 31910898

(71) Applicant: Innovative Environmental Technology Co., Ltd.
Fukuoka-shi, Fukuoka (JP)

(72) Inventors:
  • Muta, Masao
    9-13-6, Tenjin 5-chome, Chuo-Ku, Fukuoka (JP)
  • Shibata, Makoto
    9-13-6, Tenjin 5-chome, Chuo-Ku, Fukuoka (JP)
  • Takeda, Masuo
    9-13-6, Tenjin 5-chome, Chuo-Ku, Fukuoka (JP)

(74) Representative: Schieschke, Klaus, Dipl.-Ing. 
Patentanwälte Eder & Schieschke, Elisabethstrasse 34/II
80796 München
80796 München (DE)

   


(54) Waste incinerator and secondary combustion device


(57) A secondary combustion device (3) that prevents the production of dioxins during cooling, and an incinerator that produces no dioxins. A secondary burner (23) is mounted in a secondary combustion chamber (22) provided in a duct (2). A plate-shaped sintered alumina filter (26) is provided at the outlet of the secondary combustion chamber. The alumina filter (26) catches flying ashes contained in waste gas and burn them with secondary combustion heat to considerably reduce the amount of flying ashes in exhaust gas and oxidize copper chloride, iron chloride and carbon present in flying ashes, thereby preventing the flying ashes from acting as a catalyst for converting dioxin precursors into full-fledged dioxins and preventing the production of dioxins during cooling of exhaust gas.






Search report