WO1987002755A1 - Appareil pressurise a lit fluidise - Google Patents

Appareil pressurise a lit fluidise Download PDF

Info

Publication number
WO1987002755A1
WO1987002755A1 PCT/FI1986/000110 FI8600110W WO8702755A1 WO 1987002755 A1 WO1987002755 A1 WO 1987002755A1 FI 8600110 W FI8600110 W FI 8600110W WO 8702755 A1 WO8702755 A1 WO 8702755A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
fluidized bed
pressure exchanger
chamber
exchanger
Prior art date
Application number
PCT/FI1986/000110
Other languages
English (en)
Inventor
Juhani Isaksson
Original Assignee
A. Ahlstrom Corporation
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 A. Ahlstrom Corporation filed Critical A. Ahlstrom Corporation
Publication of WO1987002755A1 publication Critical patent/WO1987002755A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/02—Gas-turbine plants characterised by the use of combustion products as the working fluid using exhaust-gas pressure in a pressure exchanger to compress combustion-air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/061—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with combustion in a fluidised bed
    • F01K23/062—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with combustion in a fluidised bed the combustion bed being pressurised

Definitions

  • the present invention relates to a pressurized fluidized bed apparatus having a device to supercharge the gas to be fed into the fluidized bed reaction chamber by means of discharge gases from the chamber.
  • Erosion of gas turbine vanes has become one of the major problems in the developing utilization of solid fuels in combined gas-steam/turbine power plants.
  • prior art plants there is mentioned the plant described in EP-Patent Specification 37858.
  • the object of the invention is to reduce problems caused by solid material in the flue gases .
  • a fluidized bed apparatus includes a device to supercharge the gas to be fed into a chamber containing the fluidized bed by means of discharge gases from the chamber, characterized in that the supercharge device comprises a pressure exchanger operable such that, in use, the pressure and the temperature of the gas to be fed into the reactor are increased and the pressure and the temperature of the discharge gases from the reactor are decreased.
  • a pressure exchanger is an apparatus by means of which a low pressure gas (e.g. air) can be supercharged with a high pressure gas (e.g. flue gas) .
  • a low pressure gas e.g. air
  • a high pressure gas e.g. flue gas
  • Supercharging takes place in a rotating cellular rotor where the gases are in direct contact with each other.
  • Change in pressure is achieved directly by means of pressure waves advancing at sonic speed without changing pressure energy into mechanical energy in between e.g. by means of vanes or other mechanical energy conversion means.
  • a pressure exchanger of this type is described in more detail in DE-Patent Specification 724998.
  • a fluidized bed heating system is schematically illustrated in the drawing for generating steam to drive a steam turbine and includes a fluidized bed combustion unit in the form of a fluidized bed boiler 1 to which combustion air is supplied via duct or pipe 2.
  • the fluidized bed apparatus of the illus ⁇ trated example was coal-fired and such fuel will be supplied in known manner (not illustrated) .
  • Combustion air is passed via pipe 2 through a supercharger 3 and a pressure exchanger 4 to heat exchanger means in the form of heat transfer surfaces 5 disposed in the chamber of the pressurized bed boiler 1.
  • the thus heated combustion air is then passed through gas turbine 6 and is then supplied into a lower region of fluidized bed boiler 1.
  • Flue gases are dis ⁇ charged from the upper part of the boiler 1 via a pipe 7 and passed through a separator 8, through the pressure exchanger 4, through a further separator 9 and a gas turbine 10 (which drives supercharger 3 and forms a turbo charger 3, 10) tc a chimney or stack 11.
  • Solid material separated from gases in the separator 8 is returned to the boiler 1 via duct 8'.
  • the steam system of the boiler 1 includes a preheater 12 loca ⁇ ted in the outlet duct 7 of the flue gas as it passes to the stack 11. Also included in the steam system are heat transfer surfaces 13 disposed in the boiler and ducting or means leading from the heat transfer surfaces to supply the generated steam to a steam turbine 14 with generator G. The outlet of the turbine 14 leads to a condenser 15 and a circu ⁇ lation pump _ 6. The flue gases are led through the preheater 12 to the stack 11.
  • An intermediate condenser can be disposed between the super ⁇ charger 3 and the pressure exchanger 4 in order to cool the air. and reduce its volume before the pressure exchanger 4.
  • the heat transferred from such an intermediate condenser can be utilized in preheating the supply water of the steam circle.
  • the present invention be restricted to fluidized bed combustion apparatus or processes and other fluidized bed systems are intended to be within the ambit thereof.
  • the invention can also be applied to pressurized gas being supplied to a fluidized bed gasifier.
  • the product gases of the reactor chamber are led to a pressure exchanger wherein the necessary gasification supply gas (such as air or other gas) is pressurized.

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)

Abstract

L'appareil ci-décrit comportant une unité de combustion et un générateur de vapeur (1) est pourvu d'un échangeur de pression (4) où les gaz de fumée provenant de la chambre de l'unité de combustion (1) et de l'air en combustion (2) devant être acheminés dans l'unité de combustion (1) sont conduits à travers un échangeur de pression et pendant le fonctionnement sont en contact direct mutuel dans un rotor cellulaire rotatif, la température et la pression de l'air augmentant alors que la température et la pression des gaz de fumée décroissent. L'échangeur de pression est disposé de préférence en série avec un turbo-compresseur (3, 10), de sorte que les gaz de fumée traversent d'abord l'échangeur de pression et ensuite une turbine à gaz (10) du turbo-compresseur.
PCT/FI1986/000110 1985-10-23 1986-10-07 Appareil pressurise a lit fluidise WO1987002755A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI854138 1985-10-23
FI854138A FI854138L (fi) 1985-10-23 1985-10-23 Trycksatt virvelbaeddspanna.

Publications (1)

Publication Number Publication Date
WO1987002755A1 true WO1987002755A1 (fr) 1987-05-07

Family

ID=8521562

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1986/000110 WO1987002755A1 (fr) 1985-10-23 1986-10-07 Appareil pressurise a lit fluidise

Country Status (2)

Country Link
FI (1) FI854138L (fr)
WO (1) WO1987002755A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010785A1 (fr) * 1989-03-07 1990-09-20 L. & C. Steinmüller Gmbh Fonctionnement d'un procede mixte turbine a gaz/turbine a vapeur
WO1992022733A1 (fr) * 1991-06-18 1992-12-23 Abb Carbon Ab Methode et dispositif d'adaptation des puissances fournies par une turbine a gaz et une turbine a vapeur dans un procede de combustion a lit fluidise pressurise (pfbc)
WO2010072524A2 (fr) * 2008-12-16 2010-07-01 Siemens Aktiengesellschaft Procédé de stabilisation de la fréquence réseau d'un réseau secteur électrique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE724998C (de) * 1940-12-07 1942-09-11 Bbc Brown Boveri & Cie Druckaustauscher, z. B. fuer Kaeltemaschinen
DE966644C (de) * 1956-07-02 1957-08-29 Basf Ag Verfahren zum Betrieb von Heissgasturbinen
EP0037858A1 (fr) * 1980-04-16 1981-10-21 BBC Aktiengesellschaft Brown, Boveri & Cie. Centrale à vapeur avec générateur de vapeur à combustion sous pression et à lit fluidisé
EP0124842A1 (fr) * 1983-05-05 1984-11-14 ASEA Stal Aktiebolag Installation pour la production d'énergie avec une chambre de combustion à lit fluidisé
CH651644A5 (de) * 1980-11-13 1985-09-30 Sulzer Ag Gekuehlter verbrennungsraum mit einer wirbelschichtfeuerung und verfahren zum betrieb desselben.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE724998C (de) * 1940-12-07 1942-09-11 Bbc Brown Boveri & Cie Druckaustauscher, z. B. fuer Kaeltemaschinen
DE966644C (de) * 1956-07-02 1957-08-29 Basf Ag Verfahren zum Betrieb von Heissgasturbinen
EP0037858A1 (fr) * 1980-04-16 1981-10-21 BBC Aktiengesellschaft Brown, Boveri & Cie. Centrale à vapeur avec générateur de vapeur à combustion sous pression et à lit fluidisé
CH651644A5 (de) * 1980-11-13 1985-09-30 Sulzer Ag Gekuehlter verbrennungsraum mit einer wirbelschichtfeuerung und verfahren zum betrieb desselben.
EP0124842A1 (fr) * 1983-05-05 1984-11-14 ASEA Stal Aktiebolag Installation pour la production d'énergie avec une chambre de combustion à lit fluidisé

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010785A1 (fr) * 1989-03-07 1990-09-20 L. & C. Steinmüller Gmbh Fonctionnement d'un procede mixte turbine a gaz/turbine a vapeur
US5212941A (en) * 1989-03-07 1993-05-25 L. & C. Steinmuller Gmbh Method for operating a combined gas turbine/steam turbine process
WO1992022733A1 (fr) * 1991-06-18 1992-12-23 Abb Carbon Ab Methode et dispositif d'adaptation des puissances fournies par une turbine a gaz et une turbine a vapeur dans un procede de combustion a lit fluidise pressurise (pfbc)
WO2010072524A2 (fr) * 2008-12-16 2010-07-01 Siemens Aktiengesellschaft Procédé de stabilisation de la fréquence réseau d'un réseau secteur électrique
WO2010072524A3 (fr) * 2008-12-16 2011-05-26 Siemens Aktiengesellschaft Procédé de stabilisation de la fréquence réseau d'un réseau secteur électrique
CN102257247A (zh) * 2008-12-16 2011-11-23 西门子公司 用于稳定电力网的网络频率的方法
US8981583B2 (en) 2008-12-16 2015-03-17 Siemens Aktiengesellschaft Method for stabilization of the network frequency of an electrical power network

Also Published As

Publication number Publication date
FI854138L (fi) 1987-04-24
FI854138A0 (fi) 1985-10-23

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