EP0205761B1 - Vorrichtung zur Veränderung der Schichthöhe in einer Wirbelschichtbrennkammer - Google Patents

Vorrichtung zur Veränderung der Schichthöhe in einer Wirbelschichtbrennkammer Download PDF

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Publication number
EP0205761B1
EP0205761B1 EP86103253A EP86103253A EP0205761B1 EP 0205761 B1 EP0205761 B1 EP 0205761B1 EP 86103253 A EP86103253 A EP 86103253A EP 86103253 A EP86103253 A EP 86103253A EP 0205761 B1 EP0205761 B1 EP 0205761B1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
bed combustion
pressure
fluidised bed
fluidized bed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP86103253A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0205761A3 (en
EP0205761A2 (de
Inventor
Hans-Joachim Meier
Rafael Aruth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Babcock Werke Energie und Umwelttechnik AG
Original Assignee
Deutsche Babcock Werke AG
Deutsche Babcock Werke Energie und Umwelttechnik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsche Babcock Werke AG, Deutsche Babcock Werke Energie und Umwelttechnik AG filed Critical Deutsche Babcock Werke AG
Priority to AT86103253T priority Critical patent/ATE56519T1/de
Publication of EP0205761A2 publication Critical patent/EP0205761A2/de
Publication of EP0205761A3 publication Critical patent/EP0205761A3/de
Application granted granted Critical
Publication of EP0205761B1 publication Critical patent/EP0205761B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F23C10/18—Details; Accessories
    • F23C10/28—Control devices specially adapted for fluidised bed, combustion apparatus
    • F23C10/30—Control devices specially adapted for fluidised bed, combustion apparatus for controlling the level of the bed or the amount of material 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
    • F23C10/16—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

  • the invention relates to a device for changing the bed height in a fluidized bed combustion chamber with the features of the preamble of claim 1.
  • DE-A-3 004 848 describes a fluidized bed combustion chamber which is arranged within a pressure vessel and is connected to a storage vessel via a delivery line.
  • This feed line serves both to transfer bed material into the storage container and to return the bed material to the fluidized bed combustion chamber.
  • the storage container is provided with a gas connection which is connected to a single line connected to the air supply system of the fluidized bed combustion chamber.
  • a valve is arranged in this line, via which the pressure can be regulated in a manner not described in detail so that the fluidized fluidized bed mass can be conveyed back and forth.
  • the device according to the invention which is provided with a single delivery line in a manner known per se, is considerably simplified by integrating the hot gas filter into the collecting container below the single gas connection to be set under changing pressure.
  • the hot gas filter is flowed through in the opposite direction and thus cleaned.
  • the gas can thus be largely cleaned in a simple manner.
  • a fluidized bed combustion chamber 2 is arranged within a pressure vessel 1 under increased pressure.
  • the fluidized bed combustion chamber 2 has a nozzle base 3, above which a fluidized bed 4 is located.
  • flow-through tubes for generating steam are laid. These tubes are not essential to the invention and are therefore not shown for reasons of clarity.
  • the compressor 7 feeds air into the pressure vessel 1 under increased pressure.
  • the air penetrates through the nozzle base 3 into the fluidized bed 4 and burns the fuel present there.
  • the hot flue gas generated is cleaned in separators, not shown, and fed to a gas turbine 8, in which it is expanded.
  • the gas turbine 8 drives the compressor 7 and a generator 9.
  • Each collecting container 10 is connected to the fluidized bed combustion chamber 2 via a delivery line 11, the delivery line 11 opening into the lower part of the fluidized bed 4.
  • the conveyor line 11 has a sloping section, the inclination of which is 10 ° to 30 ° with respect to the horizontal. This inclined section prevents undesired overflow of the bed material between the collecting containers 10 and the fluidized bed combustion chamber 2.
  • Hot gas filters 12 are provided in the upper part of the collecting container 10.
  • the hot gas filters 12 are made of a ceramic material and consist of tubes open on one side or of a ceramic woven or non-woven material which can be used at temperatures up to about 1000 ° C.
  • the collecting container 10 is provided with a gas connection 13, via which the collecting container 10 is to be placed under changing pressure.
  • the gas connection 13 and the delivery line 11 of each collecting container 10 are connected to a pressure line 14, 15 which is branched off from the air line 6 leading from the compressor 7 to the pressure container 1.
  • a pressure-increasing fan 16, 17 and a throttle and shut-off device 18, 19 are arranged in the pressure lines 14, 15.
  • each collecting container 10 is further connected to an expansion line 26, 27, in which throttling and shut-off elements 28, 29 are arranged.
  • the expansion line 26, 27 is led to the gas turbine 8 and connected to such a point in the gas turbine system, the pressure of which corresponds to the pressure in the expansion line 26, 27. All throttling and shut-off devices 18, 19, 22, 23, 28, 29 are outside the pressure container 1.
  • bed material is drawn off from the fluidized bed 4 and stored in the collecting containers 10.
  • the bed material stored in the collecting containers 10 is then returned to the fluidized bed combustion chamber 2 in order to increase the bed height.
  • the bed material is discharged by applying a lower gas-side pressure in the collecting containers 10 through the gas connection 13 and the expansion lines 26, 27 than in the fluidized bed combustion chamber 2. In this way, the bed material is conveyed into the collecting container 10 by means of pneumatic negative pressure conveyance.
  • the bed material can be kept hot for a long time by the insulation of the collecting container 10 or by the medium flowing through the walls of the collecting container 10, so that it can be returned to the fluidized bed combustion chamber 2 when required.
  • the gases inevitably discharged from the fluidized bed 4 during the pneumatic transport of the bed material are cleaned in the hot gas filters 12 integrated in the collecting container 10. The cleaned gas can be at a suitable. Be fed into the gas turbine system.
  • the pressure is increased by blowing air into the collection container 10 to such an extent that it lies above the pressure in the fluidized bed combustion chamber 2. Due to the increased pressure in this way, the bed material is conveyed from the collecting containers 10 into the fluidized bed combustion chamber 2 via the delivery lines 11. The transport of the bed material is supported by a conveying air flow, which is blown directly into the conveying lines 11 through the pressure lines 14, 15. During the emptying of the collecting container 10, the hot gas filters 12 are flowed through by the air in the opposite direction and at the same time cleaned in a simple manner.
  • the fluidized bed combustion chamber 2 is provided with partially converging side walls according to FIGS. 2 and 3. In the region of the converging side walls, the collecting containers 10 are attached directly to the fluidized bed combustion chamber 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
EP86103253A 1985-06-22 1986-03-11 Vorrichtung zur Veränderung der Schichthöhe in einer Wirbelschichtbrennkammer Expired - Lifetime EP0205761B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103253T ATE56519T1 (de) 1985-06-22 1986-03-11 Vorrichtung zur veraenderung der schichthoehe in einer wirbelschichtbrennkammer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3522394 1985-06-22
DE19853522394 DE3522394A1 (de) 1985-06-22 1985-06-22 Vorrichtung zur veraenderung der schichthoehe in einer wirbelschichtbrennkammer

Publications (3)

Publication Number Publication Date
EP0205761A2 EP0205761A2 (de) 1986-12-30
EP0205761A3 EP0205761A3 (en) 1988-02-24
EP0205761B1 true EP0205761B1 (de) 1990-09-12

Family

ID=6273920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103253A Expired - Lifetime EP0205761B1 (de) 1985-06-22 1986-03-11 Vorrichtung zur Veränderung der Schichthöhe in einer Wirbelschichtbrennkammer

Country Status (4)

Country Link
US (1) US4667610A (enrdf_load_stackoverflow)
EP (1) EP0205761B1 (enrdf_load_stackoverflow)
AT (1) ATE56519T1 (enrdf_load_stackoverflow)
DE (2) DE3522394A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE450164B (sv) * 1985-10-22 1987-06-09 Asea Stal Ab Sett att reglera beddhojden i en kraftanleggning med en fluidiserad bedd och kraftanleggning med anordning for reglering av beddhojden
DE3628675C1 (de) * 1986-08-23 1987-12-10 Babcock Werke Ag Druckaufgeladene Wirbelschichtfeuerung
SE469043B (sv) * 1991-09-05 1993-05-03 Abb Carbon Ab Foerfarande och anordning foer varmhaallning av baeddmassa i pfbc-anlaeggningar

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648380A (en) * 1970-05-28 1972-03-14 Aluminum Co Of America Fluidized bed level control
GB1604313A (en) * 1978-05-31 1981-12-09 Appa Thermal Exchanges Ltd Control of bed level in fluidised bed apparatus
US4279205A (en) * 1979-09-24 1981-07-21 Wormser Engineering, Inc. Storage
DE3004848C2 (de) * 1980-02-09 1983-11-10 L. & C. Steinmüller GmbH, 5270 Gummersbach Wirbelschichtfeuerung
DE3004846C2 (de) * 1980-02-09 1982-11-11 L. & C. Steinmüller GmbH, 5270 Gummersbach Verfahren zur schnellen, unmittelbaren reversiblen Mengenänderung de Wirbelschichtmasse einer Wirbelschichtfeuerung
US4419965A (en) * 1981-11-16 1983-12-13 Foster Wheeler Energy Corporation Fluidized reinjection of carryover in a fluidized bed combustor
US4488512A (en) * 1982-11-04 1984-12-18 Boyle Bede Alfred Feedstock injection system for fluidized bed combustor
US4530207A (en) * 1983-05-05 1985-07-23 Asea-Stal Ab Power plant with a fluidized bed combustion chamber
SE441622B (sv) * 1983-07-15 1985-10-21 Goetaverken Energy Syst Ab Anordning vid forbrenning av kolhaltigt material i en reaktionskammare med virvelskiktsbedd
SE457560B (sv) * 1984-06-13 1989-01-09 Abb Stal Ab Saett att taenda en braennkammare med en fluidiserad baedd och kraftanlaeggning foer utnyttjande av saettet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DOE/MC/14129-173 (DE81025923), "Pressurized Fluidized Bed Combustion Part Load Behavior", A.G. Roberts et al., February 1981 *

Also Published As

Publication number Publication date
US4667610A (en) 1987-05-26
EP0205761A3 (en) 1988-02-24
ATE56519T1 (de) 1990-09-15
EP0205761A2 (de) 1986-12-30
DE3522394A1 (de) 1987-01-02
DE3674075D1 (de) 1990-10-18
DE3522394C2 (enrdf_load_stackoverflow) 1987-08-20

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