• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1510946 Fluidized-bed combustion METALLGES AG 9 July 1976 [5 Sept 1975] 28750/76 Heading F4B A process for combustion under approximately stoichiometric conditions in which carbonaceous material is fed through a lance 7 to a fluidized-bed reactor 1 which is fluidizedby gas supplied through an inlet 8 and by a secondary gas supplied through an inlet 2 or which can be supplied at a plurality of superimposed levels (2a-2d), Fig. 2 (not shown). At least the secondary gas contains oxygen for the combustion of the carbonaceous material in the fluidized bed. The volume ratio of fluidizing gas supplied at 8 to secondary gas supplied at 2 is in the range from 1 : 20 to 2 : 1 and the two gas supplies are adjusted so that suspension density of the fluidized bed above the inlet 2 level is in the range 15 to 100 Kg/M<SP>3</SP>. Solids entrained by the exhaust gas from the fluidized-bed are collected in the separator 6 and are recycled through a conduit 9 back into the reactor 1. Surplus solids produced are withdrawn through a conduit 10. Part of the heat of combustion is dissipated through cooling surfaces 3 in the space above the inlet 2 level. Other heat heat exchange surfaces may be located at positions 4 and 5 in the reactor and separator. Solids discharged from the conduit 10 may be fed to a fluidized-bed cooler 14, which is fluidized by oxygen containing gas which is then fed to the inlet 2. The cooler 14 has cooling registers 13 in which solids are cooled indirectly by gas supplied through a conduit 17 and later fed as fluidizing gas to the inlet 8. Part of this gas supply may be used for pneumatically feeding the carbonaceous material through the lance 7. The combustion process may be carried out under superatmospheric pressure.
    公开号:SU898960A3
    申请号:SU762395948
    申请日:1976-09-03
    公开日:1982-01-15
    发明作者:Ре Лотар；Хирш Мартин；Харальд Коллин Пер；Натанаэль Флинк Суне
    申请人:Металлгезельшафт Аг (Инофирма)；
    IPC主号:
    专利说明:

    An 8 window to the Separator 7 is connected to the recovery boiler 9, and the latter to the electrostatic precipitator 10 "Separator 7 and the electrostatic precipitator 10 by pipelines 11 and 12 are connected to the fluidized bed cooler 13, which is provided with cooling surfaces. The surfaces I are connected to the pipeline 2, and the cooler 13 to the pipeline 3. The method of burning solid carbon-containing fuel in a fluidized bed is as follows. The fuel is supplied to the fluidized bed of the furnace 1 through line 4, and the oxidant is supplied by two streams through pipelines 2 and 3, one above the other, with the ratio of the volume flow rates of the upper and lower flows equal to 0. In the area of pipelines 2 and 3, a dense dense boiling fuel is formed. layer, and above the pipeline 3, the fluidized bed density is maintained at 15-100. The fuel burns in the fluidized bed of the furnace 1, giving up part of the heat released during the heating of heating surfaces 5 and 6. The combustion products, together with solid particles, enter the separator 7, where fuel is produced. between primary separation of solids from the gases and return them in the window layer 8 "Next, the combustion products enter the heat recovery boiler 9, where it by cooling to, generate steam and then into the precipitator 10, where finally cleaned from dust. As the solid material accumulates in the layer, part of it is discharged through pipe 11 to cooler 13 where the material is cooled. There also take away from the dust caught in the electrostatic precipitator
    10 "To recover the heat of the material entering the cooler 13, the cooling is carried out by oxidant flows entering the furnace 1. The lower oxidizer flow before entering it into the pipeline 2 passes through the source of information taken into account during the examination
    权利要求:
    Claims (1)
    [1]
    K Gelperin N.I. and others. Fundamentals of fluidization. M-, Himi, 1967, p. k2k 4 adjacent surfaces 14 of the refrigerator 13. The upper stream serves as a fluidizing agent of the fluidized bed of the refrigerator 13. The flow of oxidant with the ratio of the volumes of the upper to the lower is 0, and maintaining the density of the fluidized bed in the zone of the furnace 1 located above the upper oxidant stream of 15- 100 kg / m ensures good ignition of solid fuel in the lower part of the layer, high values of heat transfer coefficients to the cooling heating surfaces 5 and 6, and uniform temperature in the layer. All this intensifies the combustion of fuel, as it eliminates goat formation, local overheating and improves fuel burning. Claims The method of burning solid carbon-containing fuel in a fluidized bed by feeding the upper and lower oxidant streams and two transverse planes one above the other and supplying solid fuel between the latter, with simultaneous removal of heat from the combustion zone, located above the upper oxidant stream, and return of the entrainment of fuel to the layer, characterized by that, in order to increase efficiency by intensifying combustion, the ratio of the volumetric flow rates of the upper and lower oxidant flows is 0.5–20, respectively, and the density of the fluidized bed in the zone located by the “upper oxidant flow is maintained at 15-100 kg / m .
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    同族专利:
    公开号 | 公开日
    ES451239A1|1977-09-16|
    FR2323101A1|1977-04-01|
    AU1572476A|1978-01-12|
    ZA763293B|1977-05-25|
    CA1057584A|1979-07-03|
    CS212255B2|1982-03-26|
    GB1510946A|1978-05-17|
    DE2539546B2|1980-11-27|
    DE2539546A1|1977-03-17|
    DD126526A5|1977-07-20|
    AU500206B2|1979-05-10|
    SE424225B|1982-07-05|
    SE7609676L|1977-03-06|
    FR2323101B1|1982-10-01|
    IN143376B|1977-11-12|
    SE424225C|1990-08-30|
    RO86704B|1985-05-01|
    BE845872A|1977-03-03|
    DE2539546C3|1985-10-24|
    RO86704A|1985-04-17|
    JPS5233132A|1977-03-14|
    JPS5728046B2|1982-06-14|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2539546A|DE2539546C3|1975-09-05|1975-09-05|Process for incinerating carbonaceous materials|
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