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    • 9. 发明专利
    • BOILER WITH CIRCULATING FLUIDIZED BED
    • JPH03279701A
    • 1991-12-10
    • JP7557690
    • 1990-03-27
    • MITSUBISHI HEAVY IND LTD
    • FUJIMA YUKIHISATAGASHIRA KENJIOOME SEIICHIHASEGAWA KOJIHANEDA TOSHIOICHIMURA SHIGEKATSU
    • F23C10/02
    • PURPOSE:To maintain suitable combustion temperature, and absorb and utilize the generated combustion heat by means of an outside heat exchanger by connecting a gas supply means to the lowest bend section of a particle circulation passage which connects the fluidized layer in a combustion furnace and the fluidized layer in an outside heat exchanger. CONSTITUTION:The fluidized layer 3 in a combustion furnace 1 and the fluidized layer 16 in an outside heat exchanger 14 are connected by a particle circulation passage 30. A first and second particle circulation pipes 31 and 32 are connected through a bend section 33 and to the bottom of the bend section 33 a gas supply means 40 is connected. When the load is brought below a limit point C, the value of the flowing gas is also adjusted to a value below a limit value (b). At the same time the respective values of air flowing through an air pipe 43 for fluidization and air pipe 44 for blowing the particles up are adjusted to drop part of the particles in the fluidized layer 3 of the combustion furnace 1 through the particle circulation pipe 31 and to raise part of the particles through a particle circulation pipe 32, and they are dispersed on the heat transfer pipe 17 in the fluidized layer in the outside heat exchanger 14 and then they are returned to the fluidized layer 16. By only the volume of the particles that is returned the particles in the fluidized layer 16 of the outside heat exchanger 13 is circulated to the fluidized layer 3 in the combustion furnace 1 through an opening 15 as shown by the arrow mark 50.
    • 10. 发明专利
    • COAL GASIFICATION EQUIPMENT
    • JPH01172494A
    • 1989-07-07
    • JP33003687
    • 1987-12-28
    • MITSUBISHI HEAVY IND LTD
    • FUJIOKA YUICHIFUJIMA YUKIHISAHANEDA TOSHIOKAI NORICHIKA
    • C10J3/72C10J3/00C10J3/46
    • PURPOSE:To control the calorific value of generated gas and to prevent ashes in char from melting and sticking, by supplying an oxidizing gas containing O2 into an upper reaction chamber through a supply means for combustion of the combustible gas in gas and part of the carbon in char. CONSTITUTION:Coal and an oxidizing gas containing O2 are supplied through supply lines 5-7 into a lower reaction chamber 1, where C, H2, etc. in the coal and recovered char are reacted for conversion into gas, and ashes are melted and discharged from the system through a molten slag outlet 10. The gas and char generated in the reaction chamber 1 are sent to a middle reaction chamber 2, where the coal and oxidizing gas supplied through supply lines 8 and 9 are burned and reacted for conversion into gas and char. The gas and char from the middle reaction chamber 2 are sent to an upper reaction chamber 3, where they are burned and reacted with an oxidizing gas supplied through a supply line 13 to raise the temperature of the char. The gas generated in the reaction chamber 3 is sent through a line 11 to a recovery unit 4, where it is separated into crude gas and recovered char. The recovered char is sent through a supply line 6 to the reaction chamber 1.