US3863606A - Vapor generating system utilizing fluidized beds - Google Patents

Vapor generating system utilizing fluidized beds Download PDF

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Publication number
US3863606A
US3863606A US382404A US38240473A US3863606A US 3863606 A US3863606 A US 3863606A US 382404 A US382404 A US 382404A US 38240473 A US38240473 A US 38240473A US 3863606 A US3863606 A US 3863606A
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United States
Prior art keywords
beds
tubes
housing
compressor
pressurized air
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Expired - Lifetime
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US382404A
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English (en)
Inventor
Richard W Bryers
Jack D Shenker
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US Environmental Protection Agency
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US Environmental Protection Agency
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Application filed by US Environmental Protection Agency filed Critical US Environmental Protection Agency
Priority to US382404A priority Critical patent/US3863606A/en
Priority to CA203,959A priority patent/CA1016823A/en
Priority to GB3140174A priority patent/GB1472567A/en
Priority to JP49082101A priority patent/JPS5230645B2/ja
Priority to DE2435429A priority patent/DE2435429A1/de
Priority to IT52228/74A priority patent/IT1016954B/it
Priority to AR254865A priority patent/AR203295A1/es
Priority to ES429063A priority patent/ES429063A1/es
Priority to AU71588/74A priority patent/AU475439B2/en
Priority to FR7425878A priority patent/FR2238898B1/fr
Application granted granted Critical
Publication of US3863606A publication Critical patent/US3863606A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D13/00—Heat-exchange apparatus using a fluidised bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0015—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type
    • F22B31/003—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type with tubes surrounding the bed or with water tube wall partitions
    • F22B31/0038—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type with tubes surrounding the bed or with water tube wall partitions with tubes in the bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/005—Fluidised bed combustion apparatus comprising two or more beds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/16—Fluidised bed combustion apparatus specially adapted for operation at superatmospheric pressures, e.g. by the arrangement of the combustion chamber and its auxiliary systems inside a pressure vessel

Definitions

  • ABSTRACT A vapor generating system in which a plurality of vertically Stacked beds of particulate: material containing a solid fuel are disposed in a housing. Pressurized air is passed through each of the fuel beds to fluidize the beds and thus promote the combustion of the fuel and maintain the beds at predetermined temperatures while a heat exchange medium is circulated in a heat exchange relation to the beds.
  • the ail is pressurized I by an air compressor driven by a gas turbine which, in turn, is driven by the flue gasesfrom the fluidized beds.
  • This invention relates to a vapor generating system, and more particularly, to such a system utilizing a heat exchanger consisting of a plurality of stacked fluidized beds for generating heat.
  • an object of the present invention to provide a vapor generating system of modular construction including a plurality of stacked fluidized beds which can be manufactured with a minimum of components in a relatively simple manner.
  • the vapor generating system of the present invention comprises a housing, a means of providing a plurality of vertically spaced beds of particulate fuel material disposed in said housing, a means of passing pressurized air through each of said fuel bedsto promote the combustion of said fuel and maintain said compartments at predetermined temperatures, and a means for successively passing a heat exchange medium in a heat exchange relation to said fluidized beds.
  • FIG. 1 is a partial sectional partial schematic view of the vapor generator utilized in the system of the present invention
  • FIG. 2 is a partial schematic partial skeleton view depicting a portion of the vapor generator of FIG. 1;
  • FIG. 3 is a cross-sectionalview taken along the line 3-3 of FIG. 1 with a portion of the piping being omitted;
  • FIG. 4 is a schematic view depicting the system ofthe present invention.
  • the reference numeral 10 refers in general to a housing having several openings for the passage of ducting and tubing for purposes that will be described in detail later.
  • a heat exchanger 12 is disposed within the housing and is formed by a front wall 14, a rear wall 16, an an intermediate wall 18.
  • Each of the walls are formed by a plurality of finned tubes welded together in a conventional manner and extending for the entire length of the wall.
  • a plurality of horizontal perforated air distribution plates 24 are disposed in a spaced relation in the area defined by the walls l4, 18, 20 and 22 to divide the area into a plurality of vertically stacked compartments which define four beds, 26a, 26b, 26c, and 26d. It is noted that FIG. 1 is not to scale since, in actual practice the vertical heights of each bed is much greater relative to its horizontal depth than shown.
  • An air plenum chamber is located immediately below each bed 26a26d for receiving air through a pair of dampers 28 and passing the air through the distribution plates 24 and into the beds for fluidizing the beds.
  • Particulate fuel from a source such as a pneumatic feeder or the like is fed into the beds 26via a plurality of pipes 29 extending through suitable openings provided in the walls 16 and 18 and the housing 10.
  • a source such as a pneumatic feeder or the like
  • pipes 29 extending through suitable openings provided in the walls 16 and 18 and the housing 10.
  • the particulate fuel is in the form of a mixture of crushed bituminous coal and limestone, with the latter functioning as a sorbent for the sulfur released during combustion of the coal in accordance with conventional practice. Since the low combustion temperatures and the low excess air requirements also reduce the nitrogen oxide from the combustion gas, the latter contains a minimum of pollutants.
  • Air which is pressurized by an external unit in a manner to be described later, is passed into the housing 10 through an inlet 30 whereby it passes into the space between the housing 10, and the heat exchanger 12 and divides up into separate paths before passing into the dampers 28 associated with each bed 26a-26d to fluidize the beds in a conventional manner. It is understood that the velocity and rate of flow of the air passing through the beds is regulated so that it is high enough to fluidize the particulate fuel in the beds to obtain economical burning or heat release rates per unit area of bed, while being low enough to avoid the loss of too many fine fuel particles from the bed and to allow sufficient residence time of gases for good sulphur removal by the absorbent added to the fuel.
  • the hot gases from the fluidized beds 26a-26d exit through outlets 32 extending through the intermediate wall 18, and mix in the area between the walls 16 and 18 before passing outwardly through an outlet 34 registering with the wall 16.
  • a plurality of headers, downcomers and associated piping are provided to selectively direct water through the tubes of the walls 14,16, 18, 20 and 22 and the beds 26 to gradually heat the water in predetermined increments.
  • a header is shown in general by the reference numeral 36, and is formed by three pipes connected in a substantially U shape, with the base portion thereof extending coplaner with, and immediately above, the wall 16.
  • a header 38 in the form of a straight conduit, is disposed immediately above the wall 18.
  • a pair of substantially L-shaped headers 40 and 42 are also provided, with one leg portion of the header 40 being coplaner with a portion of the wall 20 and the other leg portion of the header being coplaner with a portion of the wall 14; while one leg portion of the header 42 is coplaner with the other portion of the wall 14 and the other leg portion of the header 42 is coplaner with a portion of the wall 22.
  • a substantially U-shaped header 44 is provided at the bottom portion of the heat exchanger 12, with the base portion thereof being substantially coplaner with, and immediately below, the wall 16.
  • a header 46 is positioned at the end ofthe wall 18 and extends coplaner therewith, while a pair of L- shaped headers 48 and 50, substantially corresponding in shape to the headers 40 and 42, are disposed in corresponding positions at the bottom end portions of the walls 14, 20, and 22.
  • the various headers are shown in FIG. 2 as being formed of regular piping, it is understood that a plurality of spaced openings are provided through each pipe which register with the finned tubes forming the corresponding walls.
  • a plurality of downcomers, or vertically extending conduits, 52, 54, 55, 56, and 58 are provided and are connected by means of a plurality of feeder tubes to the various headers for routing the water and water steam through various portions of the walls 14, 16, and 18.
  • water is initially introduced via an inlet conduit 60 into a header 62 whereby it is distributed to a plurality of tubes completely submersed in the lowermost bed 26a.
  • the latter tubes are spaced across the width of the heat exchanger, with each extending in a serpentine relationship, to form a tube bank or bundle shown by the reference numeral 64 with. of course, only an outermost tube being shown in FIG. 1.
  • the water is partially vaporized in the uppermost loops of the tube bundle 64 and the liquid-steam mixture is collected in a header 65 and passed by a feeder tube 66 to the downcomer 56 whereby it is routed downwardly to the header 44 in communication with the finned tubes forming the wall 16 and a portion of the walls 20 and 22 as better shown in FIG. 2.
  • liquid-steam mixture is then routed upwardly through the wall 16 and the above portions of walls 20 and 22 to the header 36.
  • the mixture is passed through a plurality of feeder tubes 68 to the downcomer 52 whereby it passes downwardly and into the header 46 via a feeder tube 70.
  • the header 46 then distributes the mixture to the finned tubes of the wall 18 whereby it is routed upwardly through the latter wall to the header 38 and from the latter, via the feeder tube 72 to the downcomer 58.
  • FIGS. 1 and 2 are somewhat inconsistent with respect to the location of several of the above described feeder tubes. This is done to better clarify the presentation, especially since the particular location of the feeder tubes form no portion of the present invention.
  • the downcomer 55 connects with a header 82, shown in FIG. 1, which directs the steam into a tube bundle 84 submerged in the bed 26b, and from the latter, through a feeder tube-header unit 86 into a tube bundle 88 immersed in the bed 260. This raises the temperature of the steam to superheat before it passesinto a header 90 and exits to a steam turbine or the like through an outlet conduit 92.
  • a tube bundle 94 is provided in the uppermost bed 26d to receive relatively low temperature steam which has previously been used in another stage of the plant such as the above steam turbine, to raise its temperature for further use.
  • the latter steam is received by an inlet conduit 96 and passed, via a header 98, through the tube bundle 94 to raise the temperature of the steam before it exits via a header 100 and an outlet 102.
  • An additional bed, in the form of a carbon burnup cell 104 extends in the space between the lower portions of the walls 16 and 18.
  • This cell 104 is filled with fuel material from the primary fluid beds which has been elutriated and collected in a manner to be described in detail later, and passed into the cell through an inlet 106, for further combustion.
  • the cell 104 has an air gas circuit, separate from that of the primary circuit, in the form of an inlet 108 through which air passes into a damper 109 before passing through the bed and exiting through a gas outlet 110.
  • FIG. 4 schematically depicts the flow patterns of the air and gases in the vapor generating system of the present invention.
  • the heated gases from the gas outlet 34 and the carbon burnup cell outlet 110 are combined and are passed to a cyclone type dust collector 120 which removes the fine fuel particles entrained in the gases and directs the particles to a dust collector 122 and then into an injector 124 which injects the fines, through the inlet ")6, back into the carbon burnup cell 104 for further burning.
  • the air from the collector 120 which is relatively free from the fine fuel particles, is passed into the inlet side of a gas turbine 126 operatively connected to an air compressor 128 which receives atmospheric air and pressurizes it before passing it to the primary air inlet 30 of the housing 10.
  • the gas turbine 126 also drives a generator 130 in a conventional manner which provides power auxiliary to that provided by the main turbine to which steam is fed through the outlet 92 as described earlier.
  • compressed air from the air compressor 128 enters the housing through the inlet 30 and fills in the void between the tube walls of the heat exchanger 12 and the housing 10.
  • This volume acts as a manifold to distribute the air into the beds 26a-26d through their respective air dampers 28.
  • the particulate fuel in each bed is ignited and, by virtue of being fluidized by the air, effects a relatively high bed-to-tube heat transfer coefficient.
  • the flue gases from the respective beds then pass outwardly through the outlets 32 and then, through the outlet 34, into the cyclone 120 for separation and further treatment as described above.
  • the water to be vaporized enters the vapor generator 12 in the bottom of the bed 26a via the inlet 60 and passes through the tube bank 64 before being routed through the various portions of the walls 14, 16, 18, 20, and 22 via the headers and feeder tubes as discussed above, to completely vaporize the water. From the last wall portion the steam is then passed into the superheater banks 84 and 88 whereby its temperature is raised to superheat before it is collected in the header 90 and passed, through the outlet 92, into a steam turbine or the like (not shown) for driving same.
  • the use of the vertical stacked compartments defined by continuous walls considerably reduces the manufacturing costs and time, since it minimizes headers, interconnecting piping, and downcomers yet permits a maximum use of the heat transfer surfaces involved.
  • the free movement of the particulate fuel in the fluidized bed promotes rapid heat transfer both within the bed and between the bed and the submerged tube banks. As a result, bed temperatures are uniform and easy to control.
  • the cost of construction is reduced by minimizing boiler cross sectional area and maximizing the number of components that are shop fabricated, so that the boiler dimensions can meet shipping, dimensional and weight limitations.
  • the start-up procedures are greatly simplified by assigning only one heating function to each bed, such that no bed must be started with uncooled tubes.
  • the evaporating beds are started first with circulating water, and superheating beds are started last after steam has been generating.
  • the assigning of separate heating functions to the individual beds also simplifies and improves steam temperature control by differential firing of coal to each bed.
  • the modular construction simplifies load control, and a four to one turn down can be achieved by simply shutting down three modules. This also improves on load time as individual modules can be serviced without loosing the entire boiler system.
  • a vertically stacked bed with a fin-tube water wall construction simplified the circuitry and minimizes the number of headers, downcomers and feeder pipes.
  • the fin-tube water wall construction has the following attendant advantages:
  • a. provides a support for the heat transfer surface, pressure parts and fluid beds
  • Still other advantages of the heat exchanger of the present invention include reduction in the corrosion of the tubes, etc., due to the relatively low combustion temperatures available and a reduction in costs since cheaper construction materials can be used by virtue of the high heat transfer rates at the relatively low temperatures.
  • pressurized air for fluidizing the beds leads to still further advantages.
  • the vertical height of each bed can be increased, thus permitting a corresponding decrease in the width and length of the beds.
  • the mechanical problems, and therefore costs, normally associated with feeding the coal into the beds is also reduced.
  • a vapor generating system comprising a housing, means defining a plurality of vertically aligned beds of particulate fuel material in said housing, a source of pressurized air, means to pass said pressurized air through each of said beds to promote the combustion of said fuel and maintain said beds at predetermined temperatures, a plurality of vertically disposed tubes connected together to form the walls of said housing for passing a heat exchange medium in a heat exchange relation to said beds, and piping means for directing said medium into the lower ends of a portion of said tubes for passage upwardly to the upper ends thereof and from the upper ends of said. tubes downwardly externally of said tubes and back into another portion of said tubes for passage upwardly therethrough.
  • a vapor generating system comprising a housing, means defining a plurality of vertically aligned beds of particulate fuel material in said housing, a source of pressurized air, means to pass said pressurized air through each of said beds to promote the combustion of said fuel and maintain said beds at predetermined temperatures, a plurality of vertically disposed tubes connected together to form the walls of said housing for passing a heat exchange medium in a heat exchange relation to said beds, and piping means for directing said medium through at least one of said beds and then into the lower ends of a portion of said tubes for passage upwardly to the upper ends thereof.
  • a vapor generating system comprising a housing, means defining a plurality of vertically aligned beds of particulate fuel material in said housing, a source of pressurized air, means to pass said pressurized air through each of said beds to promote the combustion of said fuel and maintain said beds at predetermined temperatures, a plurality of vertically disposed tubes connected together to form the walls of said housing for passing a heat exchange medium in a heat exchange relation to said beds, and piping means for directing said medium into the lower ends of a portion of said tubes for passage upwardly to the upper ends thereof and then through at least one of said beds.
  • said source of pressurized air is an air compressor and further comprising a gas turbine operatively connected to said compressor, and means for directing the gases from said beds to said turbine for driving said turbine and therefore said compressor.
  • said source of pressurized air is an air compressor and further comprising a gas turbine operatively connected to said compressor, and means for directing the gases from said beds to said turbine for driving said turbine and therefore said compressor.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
US382404A 1973-07-25 1973-07-25 Vapor generating system utilizing fluidized beds Expired - Lifetime US3863606A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US382404A US3863606A (en) 1973-07-25 1973-07-25 Vapor generating system utilizing fluidized beds
CA203,959A CA1016823A (en) 1973-07-25 1974-07-03 Vapor generating system utilizing fluidized beds
GB3140174A GB1472567A (en) 1973-07-25 1974-07-16 Vapour generating system utilizing fluidized beds
JP49082101A JPS5230645B2 (es) 1973-07-25 1974-07-17
DE2435429A DE2435429A1 (de) 1973-07-25 1974-07-23 Dampferzeuger
IT52228/74A IT1016954B (it) 1973-07-25 1974-07-23 Impianto per la produzione di vapore
AR254865A AR203295A1 (es) 1973-07-25 1974-07-24 Generador de vapor
ES429063A ES429063A1 (es) 1973-07-25 1974-07-24 Sistema generador de vapor.
AU71588/74A AU475439B2 (en) 1973-07-25 1974-07-24 Vapor generating system utilizing fluidized beds
FR7425878A FR2238898B1 (es) 1973-07-25 1974-07-25

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US382404A US3863606A (en) 1973-07-25 1973-07-25 Vapor generating system utilizing fluidized beds

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US3863606A true US3863606A (en) 1975-02-04

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US (1) US3863606A (es)
JP (1) JPS5230645B2 (es)
AR (1) AR203295A1 (es)
AU (1) AU475439B2 (es)
CA (1) CA1016823A (es)
DE (1) DE2435429A1 (es)
ES (1) ES429063A1 (es)
FR (1) FR2238898B1 (es)
GB (1) GB1472567A (es)
IT (1) IT1016954B (es)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223529A (en) * 1979-08-03 1980-09-23 General Electric Company Combined cycle power plant with pressurized fluidized bed combustor
EP0028458A2 (en) * 1979-10-03 1981-05-13 Sandfire (Proprietary) Limited Fluidised-bed boilers
US4453494A (en) * 1982-03-22 1984-06-12 Combustion Engineering, Inc. Fluidized bed boiler having a segmented grate
US4493186A (en) * 1981-08-18 1985-01-15 Kraftwerk Union Aktiengesellschaft Steam power plant and steam generator, especially suited for a steam power plant of this type
US4563267A (en) * 1984-07-30 1986-01-07 The Badger Company, Inc. Process for reducing thermal shock in fluidized bed stem coils cycled in and out of service
EP0197378A1 (de) * 1985-04-01 1986-10-15 Siemens Aktiengesellschaft Durchlaufdampferzeuger
EP0246503A1 (en) * 1986-05-19 1987-11-25 Foster Wheeler Energy Corporation Fluidized bed steam generator including a separate recycle bed
EP0266637A1 (en) * 1986-10-29 1988-05-11 Asea Stal Ab Power plant for combustion of fuel in a fluidized bed
US4841727A (en) * 1987-02-09 1989-06-27 Siemens Aktiengesellschaft Device for generating flue gas to drive a gas turbine
EP0428115A2 (en) * 1989-11-13 1991-05-22 Mitsubishi Jukogyo Kabushiki Kaisha Pressure fluidized bed firing boiler
US5406785A (en) * 1991-06-20 1995-04-18 Abb Carbon Ab Method and a device in a PFBC power plant
US5469698A (en) * 1994-08-25 1995-11-28 Foster Wheeler Usa Corporation Pressurized circulating fluidized bed reactor combined cycle power generation system
US5570645A (en) * 1995-02-06 1996-11-05 Foster Wheeler Energy Corporation Fluidized bed system and method of operating same utilizing an external heat exchanger
WO1997001072A1 (en) * 1995-06-21 1997-01-09 Abb Carbon Ab A method and a device for heat recovery from flue gases
US6021743A (en) * 1995-08-23 2000-02-08 Siemens Aktiengesellschaft Steam generator
WO2007135240A2 (en) * 2006-05-19 2007-11-29 Foster Wheeler Energia Oy Boiler water cycle of a fluidized bed reactor and a fluidized bed reactor with such boiler water cycle
US20090031930A1 (en) * 2005-12-15 2009-02-05 Fuchang Shen Apparatus for incinerating waste and process for comprehensive utilization of waste

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE410989B (sv) * 1978-04-11 1979-11-19 Stal Laval Turbin Ab Gasturbinanleggning
EP0037858B1 (de) * 1980-04-16 1984-01-25 BBC Aktiengesellschaft Brown, Boveri & Cie. Dampfkraftwerk mit druckgefeuertem Dampferzeuger mit Fliessbettfeuerung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818049A (en) * 1954-08-05 1957-12-31 Combustion Eng Method of heating
US3431892A (en) * 1967-02-17 1969-03-11 Ind De Procedes & D Applic Sa Process and apparatus for combustion and heat recovery in fluidized beds
US3648666A (en) * 1970-10-08 1972-03-14 Foster Wheeler Corp Steam boilers
US3659559A (en) * 1970-06-22 1972-05-02 Foster Wheeler Corp Fluidised bed burner control
US3736908A (en) * 1971-10-08 1973-06-05 Us Interior System for starting a fluidized bed boiler

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2818049A (en) * 1954-08-05 1957-12-31 Combustion Eng Method of heating
US3431892A (en) * 1967-02-17 1969-03-11 Ind De Procedes & D Applic Sa Process and apparatus for combustion and heat recovery in fluidized beds
US3659559A (en) * 1970-06-22 1972-05-02 Foster Wheeler Corp Fluidised bed burner control
US3648666A (en) * 1970-10-08 1972-03-14 Foster Wheeler Corp Steam boilers
US3736908A (en) * 1971-10-08 1973-06-05 Us Interior System for starting a fluidized bed boiler

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223529A (en) * 1979-08-03 1980-09-23 General Electric Company Combined cycle power plant with pressurized fluidized bed combustor
EP0028458A2 (en) * 1979-10-03 1981-05-13 Sandfire (Proprietary) Limited Fluidised-bed boilers
EP0028458A3 (en) * 1979-10-03 1982-01-20 World Energy Resources Consultancy Service (Pty) Limited Fluidised-bed boilers and method of operating the same
US4493186A (en) * 1981-08-18 1985-01-15 Kraftwerk Union Aktiengesellschaft Steam power plant and steam generator, especially suited for a steam power plant of this type
US4453494A (en) * 1982-03-22 1984-06-12 Combustion Engineering, Inc. Fluidized bed boiler having a segmented grate
US4563267A (en) * 1984-07-30 1986-01-07 The Badger Company, Inc. Process for reducing thermal shock in fluidized bed stem coils cycled in and out of service
EP0197378A1 (de) * 1985-04-01 1986-10-15 Siemens Aktiengesellschaft Durchlaufdampferzeuger
EP0246503A1 (en) * 1986-05-19 1987-11-25 Foster Wheeler Energy Corporation Fluidized bed steam generator including a separate recycle bed
JPS62272007A (ja) * 1986-05-19 1987-11-26 フオスタ−・ホイ−ラ−・エナ−ジイ・コ−ポレイシヨン 別個の再循環床を有する流動床式蒸気発生装置
JPH0518005B2 (es) * 1986-05-19 1993-03-10 Foster Wheeler Energy Corp
EP0266637A1 (en) * 1986-10-29 1988-05-11 Asea Stal Ab Power plant for combustion of fuel in a fluidized bed
US4779574A (en) * 1986-10-29 1988-10-25 Asea Ab Power plant with combustion in a fluidized bed
AU603611B2 (en) * 1986-10-29 1990-11-22 Asea Stal Aktiebolag Power plant with combustion in a fluidized bed
US4841727A (en) * 1987-02-09 1989-06-27 Siemens Aktiengesellschaft Device for generating flue gas to drive a gas turbine
US5143024A (en) * 1989-11-13 1992-09-01 Mitsubishi Jukogyo Kabushiki Kaisha Pressure fluidized bed firing boiler
EP0428115A2 (en) * 1989-11-13 1991-05-22 Mitsubishi Jukogyo Kabushiki Kaisha Pressure fluidized bed firing boiler
EP0428115B1 (en) * 1989-11-13 1996-02-21 Mitsubishi Jukogyo Kabushiki Kaisha Pressure fluidized bed firing boiler
US5406785A (en) * 1991-06-20 1995-04-18 Abb Carbon Ab Method and a device in a PFBC power plant
US5469698A (en) * 1994-08-25 1995-11-28 Foster Wheeler Usa Corporation Pressurized circulating fluidized bed reactor combined cycle power generation system
US5570645A (en) * 1995-02-06 1996-11-05 Foster Wheeler Energy Corporation Fluidized bed system and method of operating same utilizing an external heat exchanger
WO1997001072A1 (en) * 1995-06-21 1997-01-09 Abb Carbon Ab A method and a device for heat recovery from flue gases
US6021743A (en) * 1995-08-23 2000-02-08 Siemens Aktiengesellschaft Steam generator
US20090031930A1 (en) * 2005-12-15 2009-02-05 Fuchang Shen Apparatus for incinerating waste and process for comprehensive utilization of waste
US8047143B2 (en) * 2005-12-15 2011-11-01 Fuchang Shen Apparatus for incinerating waste and process for comprehensive utilization of waste
WO2007135240A2 (en) * 2006-05-19 2007-11-29 Foster Wheeler Energia Oy Boiler water cycle of a fluidized bed reactor and a fluidized bed reactor with such boiler water cycle
WO2007135240A3 (en) * 2006-05-19 2008-03-13 Foster Wheeler Energia Oy Boiler water cycle of a fluidized bed reactor and a fluidized bed reactor with such boiler water cycle
US20100012050A1 (en) * 2006-05-19 2010-01-21 Foster Wheeler Energia Oy Boiler Water Cycle of a Fluidized Bed Reactor and a Fluidized Bed Reactor
AU2007253232B2 (en) * 2006-05-19 2010-09-09 Foster Wheeler Energia Oy Boiler water cycle of a fluidized bed reactor and a fluidized bed reactor with such boiler water cycle

Also Published As

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DE2435429A1 (de) 1975-02-13
GB1472567A (en) 1977-05-04
FR2238898B1 (es) 1978-09-22
JPS5053701A (es) 1975-05-13
IT1016954B (it) 1977-06-20
ES429063A1 (es) 1976-08-16
CA1016823A (en) 1977-09-06
FR2238898A1 (es) 1975-02-21
AU475439B2 (en) 1976-08-19
JPS5230645B2 (es) 1977-08-09
AR203295A1 (es) 1975-08-29
AU7158874A (en) 1976-01-29

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