• 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:
    The heating power of the fire box of a boiler burning powdered fuel maintained in suspension by fluidizing air is regulated in dependence on the temperature of the burning fluidized fuel layer by means of a heat transmitting system filled with a liquid medium, a first part of the heat transmitting system being embedded in the burning fluidized fuel layer, a second part of such system being disposed in the boiler drum, and a third part of the system being disposed within the fluidizing air supply. The heat transmitting liquid which is heated by its flow through the first part of the heat transmitting system selectively transmits heat to either the second or the third part of the system whereby to regulate the heat output of the boiler.
    公开号:SU734477A1
    申请号:SU772530651
    申请日:1977-10-11
    公开日:1980-05-15
    发明作者:Новотны Павел；Фиала Лудвик
    申请人:Чкд Дукла Народни Подник (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to the field of boiler building, namely to devices of a fluidized bed boiler. Boilers are known that contain a drum separator and a furnace with upper and lower heating surfaces, between which there is a gas distribution grid for creating a fluidized bed, which can be controlled by changing the velocity of the particles - LAYER or by the degree of immersion of the heating surface in the vortex layer 1 This device is the closest to the invention in its technical essence and the achieved result. The disadvantage of it is narrow limits and low speeds of regulation of heat removal in the vortex layer, as well as significant temperature distortions in the vortex layer. The aim of the invention is to increase the maneuverability of the boiler. This goal is achieved by the fact that an additional heating surface is installed in the drum separator, which is parallel to the lower heating surface through a flow distributor connected to the upper heating surface. The drawing shows the proposed boiler. The boiler contains a drum separator and a firebox 2 from the upper 3 and lower 4 heating surfaces. Between the heating surfaces there is a gas distribution grid 5 for creating a fluidized bed. In the separator drum 1, an additional heating surface 6 is installed, which in parallel with the lower heating surface 4 is connected via a three-way valve 7 to the upper heating surface 3. The three-way valve 7 is connected to a servo drive 8, which, together with the circulation pump 9, is connected to the data evaluation link 10. A temperature sensor 11 and a steam flow meter 12 are also connected to the data evaluation link. The boiler works as follows. As the temperature of the vortex layer, measured by the thermal sensor 11, is higher than the set, using the data evaluation link 10 and the servo-drive 8, a three-way valve connects the upper heating surface 3 located in the furnace to the additional heating surface 6 located in the drum separator 1 of the boiler.
    At the same time, the capacity of the circulating pump 9 and the intermediate coolant, for example the oil circulating in the heating surfaces 3, 4 and 6, increase heat from the vortex layer and transfer it to the water of the separator drum.
    When the temperature of the vortex layer 10 of the evaluation data decreases, a signal is generated to connect the heating surface 3 to the heating surface 4, while the capacity of the circulation pump 9 decreases. As a result, the amount of heat removed from the vortex layer decreases and its temperature increases.
    In addition to these, operating modes with the circulation of the intermediate coolant through all three heating surfaces 3, 4 and 6 can be implemented simultaneously. In this case, the power of the circulation pump 9 may be different.
    Placing in the drum separator an additional heating surface and connecting it in parallel with the lower heating surface through the flow distributor to the upper heating surface allows to expand the limits and speed of boiler regulation, as well as to reduce temperature distortions in the vortex layer.
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A boiler containing a drum separator and a furnace with upper and lower heating surfaces, between which a gas distribution grid is installed to create a fluidized bed, characterized in that, with the aim of increasing maneuverability, an additional heating surface is installed in the drum separator parallel with the lower heating surface through the flow distributor connected to the upper heating surface.
    Sources of information taken into account in the examination 1. UK patent no. 1307220, class F 4 V, pub. 1973.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU734477A1|1980-05-15|Boiler
    KR0131684B1|1998-04-15|Combustion control apparatus for fluidized bed boilers
    US3910235A|1975-10-07|Fluidised bed combustion
    US2575885A|1951-11-20|Steam superheat control by automatic and extended-range means
    GB2097693A|1982-11-10|Fluidized bed combustion system
    KR100367920B1|2003-01-14|A control scheme for large circulating fluid bed steam generators|
    US2561471A|1951-07-24|Steam generator
    SE9202181L|1994-01-17|Device for controlling boilers
    US2151516A|1939-03-21|Radiation heater
    US3379146A|1968-04-23|Incinerator heating system
    US2623507A|1952-12-30|Boiler with combustion air-cooled superheater
    US4358052A|1982-11-09|Hot-water central heating system
    US1781174A|1930-11-11|Fluid-fuel-fired boiler
    SU985597A1|1982-12-30|Method of automatic control of fuel feed into straight-through boiler
    SU924453A1|1982-04-30|Method of automatic control of heat codition of stea-water path of steam generator
    SU1283495A1|1987-01-15|Method of automatic control for heat conditions of steam generator water-steam circuit
    US4308826A|1982-01-05|Shell boilers
    JP2901085B2|1999-06-02|Boiler control device
    JPH01167504A|1989-07-03|Fluidized bed type boiler device
    JP2778839B2|1998-07-23|Fluidized bed heating device
    SU850984A1|1981-07-30|Method of regulating steam pressure in reduction-refrigeration plants
    SU916887A1|1982-03-30|System for automatic control of water-fuel ratio in straight-flow steam generator
    SU737696A1|1980-05-30|Method of adjusting the slanting of heat response of mill-shaft semifurnaces of a steam generator
    SU566060A1|1977-07-25|Methof of automatically regulating the recirculation of outgoing gases of a steam boiler
    SU914868A1|1982-03-23|Boiler unit
    同族专利:
    公开号 | 公开日
    US4136642A|1979-01-30|
    GB1558231A|1979-12-19|
    CS187755B1|1979-02-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4796568A|1987-03-25|1989-01-10|Abb Stal Ab|Power plant burning fuel in a fluidized bed|SE364756B|1972-07-07|1974-03-04|Stal Laval Turbin Ab|
    GB1448196A|1972-10-20|1976-09-02|Sprocket Properties Ltd|Fluidised bed incinerators|
    US3805715A|1972-10-26|1974-04-23|Atomic Energy Commission|Method for drying sludge and incinerating odor bodies|
    US4072130A|1976-12-01|1978-02-07|The Ducon Company, Inc.|Apparatus and method for generating steam|US4177765A|1978-08-14|1979-12-11|The Babcock & Wilcox Co.|Output control for fluidized bed boilers|
    ZA801294B|1979-03-14|1981-10-28|British Petroleum Co|Fluidised bed combustor|
    DK144219C|1979-08-29|1982-06-21|Burmeister & Wains Energi|Boiler for fluid-bed combustion|
    NL8000404A|1980-01-22|1981-08-17|Neratoom|INTERMEDIATE CIRCUIT FOR A PRESSURE FLUID BED.|
    US4526759A|1982-06-09|1985-07-02|Foster Wheeler Energy Corporation|Fluidized bed reactor utilizing in-bed heat exchanger tubes which register with water wall tubes|
    EP0108482B1|1982-10-01|1986-05-14|Mobil Oil Corporation|Heat transfer circuit for generation of steam in conversion of methanol to gasoline|
    DE3800863A1|1988-01-14|1989-07-27|Metallgesellschaft Ag|METHOD FOR CONTROLLING THE PRODUCTION OF STEAM IN A COMBUSTION PLANT|
    CN102012016B|2010-11-18|2012-08-01|上海锅炉厂有限公司|Supercritical circulating fluidized bed boiler with double-return evaporating heating surface|
    DE102011009243A1|2011-01-24|2012-07-26|Joachim Kümmel|Method for preventing bumping in fluidized bed immersion heating surfaces at high steam generator, involves setting operating pressure of steam boiler to specific value so that high pressure steam is injected from auxiliary boiler|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CS660576A|CS187755B1|1976-10-13|1976-10-13|Method of and apparatus for regulating heat output of fluidized furnaces of steam or hot/water boilers with heat exchanging surface in the fluidized bed|
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