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EP0639214B1 - Procede de preparation du lignite pour des processus combines gaz-vapeur - Google Patents

Procede de preparation du lignite pour des processus combines gaz-vapeur Download PDF

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Publication number
EP0639214B1
EP0639214B1 EP92904443A EP92904443A EP0639214B1 EP 0639214 B1 EP0639214 B1 EP 0639214B1 EP 92904443 A EP92904443 A EP 92904443A EP 92904443 A EP92904443 A EP 92904443A EP 0639214 B1 EP0639214 B1 EP 0639214B1
Authority
EP
European Patent Office
Prior art keywords
steam
energy
gas turbine
operated
drying
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
EP92904443A
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German (de)
English (en)
Other versions
EP0639214A1 (fr
Inventor
Bernd Dr. Krödel
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.)
VEAG Vereinigte Energiewerke AG
Original Assignee
VEAG Vereinigte Energiewerke 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 VEAG Vereinigte Energiewerke AG filed Critical VEAG Vereinigte Energiewerke AG
Publication of EP0639214A1 publication Critical patent/EP0639214A1/fr
Application granted granted Critical
Publication of EP0639214B1 publication Critical patent/EP0639214B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10F—DRYING OR WORKING-UP OF PEAT
    • C10F5/00—Drying or de-watering peat
    • 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
    • F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/06—Returning energy of steam, in exchanged form, to process, e.g. use of exhaust steam for drying solid fuel or plant
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
    • F23K1/04—Heating fuel prior to delivery to combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2200/00—Mathematical features
    • F05B2200/20—Special functions
    • F05B2200/26—Special functions trigonometric
    • F05B2200/261—Sine

Definitions

  • the invention relates to a method for lignite processing for gas-steam combination processes of a heat generation system.
  • FIG. 1 Also known is a method for operating a gas-steam combination process (DE-OS 39 07 217).
  • the method is divided into two technological concepts, the concept shown in FIG. 1 including the operation of the ballast gas turbine with natural gas. This solution is trivial and has been in commercial use for years.
  • the second concept, shown in FIG. 2 includes pressure fluidized bed coal gasification of a coal partial flow. Since the coal partial flow gasification is preceded by a steam fluidized bed drying and this drying is not energetically linked to the combi block, it must be operated with electro-energy intensive vapor recompression and external vapor deduster, so that this block concept has a low efficiency of 42 - 44%.
  • the technical outlay on the plant is very large, since in addition to the typical combination block equipment, a gas turbine system, intercooling of air, connecting piping and ducts, a pressure-charged fluidized bed gasification reactor with associated hot gas deduster and an electro-energy-consuming drying technology (without an energetic combination with the combination block) are required.
  • a gas-steam combination block with a pressure-charged fluidized bed combustion in which a pressure dryer is integrated in terms of heat technology (WO 90/00219).
  • the vapors generated in the drying process and under pressure are fed into the steam boiler with steam fluidized bed combustion, mixed there with the combustion gases of the solid fuel system and, after exhaust gas dedusting, fed to the exhaust gas turbine and expanded there, so that the vapors thus injected into the flue gas stream perform more effectively in the exhaust gas turbine , without the need for proportional performance in air compression.
  • the associated shift in the power structure between gas and steam turbine power results in only a slight improvement in the block efficiency. This circuit does not allow phase-shifted recovery of the drying energy used to dry the moist fuel.
  • the invention has for its object to achieve a significant reduction in CO2 emissions per unit of power by reducing the use of fossil fuels, the drying facilities for raw lignite are connected to the heat generation system so that a full energy recovery of the vapor is realized.
  • the drying container is operated in conjunction with a pressure fluidized bed furnace, a gas turbine, a steam turbine, an air-heated steam reheater and a waste heat boiler, and the energy content of the vapor, which is under medium pressure and is dedusted, is used to evaporate a feed water partial stream and the gas turbine is operated with exhaust gases from the pressure fluidized bed furnace, steam is reheated by means of compressed combustion air when the combustion air is cooled, and the vapor condensate formed by the energetic combination is used to treat the circulation process after it has been treated.
  • the resulting vapor condensate is recycled without further treatment as process water in an ash / embedding product recycling in favor of a construction material use.
  • the dry coal produced in the energy network is burned in the pressure-charged fluidized bed furnace of the steam boiler with an excess of air in the range 2 ⁇ ⁇ 3.
  • the proposal according to the invention has the advantage that the gas-steam technology with pressure fluidized bed combustion can also be operated with highly humidified lignite and thereby achieves a process efficiency of 47% - 48% at nominal and part load as well as an excess air ratio of 2.7 becomes.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Drying Of Solid Materials (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

L'invention concerne un procédé pour la préparation du lignite pour des processus combinés gaz-vapeur dans des installations de production de chaleur. L'invention a pour objectif de parvenir à une réduction sensible des émissions de CO2 par unité de rendement utile, par une diminution de l'utilisation de porteurs d'énergie fossiles, les installations de séchage du lignite brut étant reliées à l'installation de production de chaleur de telle manière qu'on obtienne une utilisation energétique totale des fumées. Cet objectif est atteint, dans le cadre de l'invention, par le fait que le récipient de chauffage est exploité en association avec un système de chauffage à lit fluidisé sous pression, une turbine à gaz, une turbine à vapeur, un resurchauffeur à vapeur chauffé par air et une chaudière de récupération, que l'énergie de séchage du réservoir de séchage est obtenue par la vapeur saturée de la chaudière de récupération du processus combiné, que l'énergie contenue dans les fumées placées sous une pression moyenne et dépoussiérées est employée pour l'évaporation d'un flux partiel d'eau d'alimentation, que la turbine à gaz est exploitée avec les gaz brûlés du système de chauffage à lit fludisé, que, par l'action d'un air de combustion comprimé, un resurchauffeur à vapeur est mis en ÷uvre avec un refroidissement de l'air de combustion que le condensat de fumées produit par la liaison énergétique est utilisé, après sa préparation, pour l'alimentation en eau du processus de circulation.

Claims (3)

  1. Procédé de traitement de lignite pour processus gaz-vapeur combinés, tels qu'ils se produisent dans un réservoir de séchage à chauffage indirect d'une installation de production de vapeur, l'énergie de séchage du réservoir de séchage étant fournie par la vapeur saturée d'une chaudière à chaleur perdue intégrée dans le processus combiné,
    caractérisé en ce que le réservoir de séchage (1) est exploité en combinaison avec un foyer à lit fluidisé sous pression (4), une turbine à gaz (12), une turbine à vapeur (5), un resurchauffeur à vapeur chauffé à l'air (13) et une chaudière à chaleur perdue (17), que l'énergie des buées sous pression moyenne et dépoussiérées sert à l'évaporation d'un courant partiel de l'eau d'alimentation et que la turbine à gaz (12) est alimentée en gaz d'échappement du foyer à lit fluidisé sous pression (4), qu'une resurchauffe de vapeur avec refroidissement de l'air de combustion est assurée par de l'air de combustion comprimé et que les buées condensées obtenues au cours du processus énergétique combiné, servent, après leur traitement, à l'alimentation en eau du circuit fermé.
  2. Procédé selon la revendication 1,
    caractérisé en ce que les buées condensées sont utilisées, sans autre traitement, comme eau industrielle, dans une installation de fabrication de matériaux de construction à base de cendres.
  3. Procédé selon la revendication 1,
    caractérisé en ce que le lignite sec obtenu au cours du processus énergétique combiné est brûlé dans le foyer à lit fluidisé et mis sous pression (4) de la chaudière à vapeur (4), l'excès en air étant compris entre 2 < λ < 3.
EP92904443A 1991-02-15 1992-02-13 Procede de preparation du lignite pour des processus combines gaz-vapeur Expired - Lifetime EP0639214B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4105128A DE4105128A1 (de) 1991-02-15 1991-02-15 Verfahren zur braunkohlenaufbereitung fuer gas-dampf-kombiprozesse
DE4105128 1991-02-15
PCT/DE1992/000108 WO1992014802A1 (fr) 1991-02-15 1992-02-13 Procede de preparation du lignite pour des processus combines gaz-vapeur

Publications (2)

Publication Number Publication Date
EP0639214A1 EP0639214A1 (fr) 1995-02-22
EP0639214B1 true EP0639214B1 (fr) 1996-05-08

Family

ID=6425385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92904443A Expired - Lifetime EP0639214B1 (fr) 1991-02-15 1992-02-13 Procede de preparation du lignite pour des processus combines gaz-vapeur

Country Status (5)

Country Link
EP (1) EP0639214B1 (fr)
JP (1) JPH07507333A (fr)
AU (1) AU651871B2 (fr)
DE (2) DE4105128A1 (fr)
WO (1) WO1992014802A1 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
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DE4105129A1 (de) * 1991-02-15 1992-08-20 Ver Energiewerke Ag Verfahren zur trocknung wasserhaltiger fester brennstoffe, insbesondere rohbraunkohle
NZ252644A (en) * 1992-05-08 1995-11-27 Victoria Elect Commission Process and apparatus for drying and gasifying a particulate carbonaceous fuel with a high moisture content
DE4228206C2 (de) * 1992-08-28 1996-07-11 Steag Ag Verfahren und Vorrichtung zum Betreiben einer Gasturbinenanlage
FI99051C (fi) * 1992-10-08 1997-09-25 Imatran Voima Oy Menetelmä ja kytkentä polttoaineen paineenalaiseen tilaan syöttämisen helpottamiseksi
AU1664895A (en) * 1994-03-09 1995-09-25 Veag Vereinigte Energiewerke Ag Process and device for operating a pressure-loaded, lignite-fed, circulating fluidised bed furnace for composite power stations
DE19601031A1 (de) * 1996-01-13 1997-07-17 Lurgi Lentjes Babcock Energie Dampferzeuger mit druckaufgeladener zirkulierender Wirbelschichtfeuerung
WO1997034075A1 (fr) * 1996-03-14 1997-09-18 Siemens Aktiengesellschaft Eviter l'encrassement d'une aube de turbine a vapeur par injection de vapeur purifiee
US8062410B2 (en) 2004-10-12 2011-11-22 Great River Energy Apparatus and method of enhancing the quality of high-moisture materials and separating and concentrating organic and/or non-organic material contained therein
US8579999B2 (en) * 2004-10-12 2013-11-12 Great River Energy Method of enhancing the quality of high-moisture materials using system heat sources
US7987613B2 (en) 2004-10-12 2011-08-02 Great River Energy Control system for particulate material drying apparatus and process
US8523963B2 (en) 2004-10-12 2013-09-03 Great River Energy Apparatus for heat treatment of particulate materials
US7275644B2 (en) 2004-10-12 2007-10-02 Great River Energy Apparatus and method of separating and concentrating organic and/or non-organic material
PL379714A1 (pl) * 2006-05-17 2007-11-26 Novatore Ag Sposób podniesienia sprawności j jednoczesnego obniżenia emisji spalin w procesie wytwarzania energii elektrycznej i układ do jego realizacji
WO2009101492A2 (fr) * 2008-02-14 2009-08-20 Daniel Chablaix Moteur à vapeur chauffée par la chaleur de l'air comprimé
DE102011110218A1 (de) * 2011-08-16 2013-02-21 Rwe Power Aktiengesellschaft Verfahren zum Betreiben eines Kraftwerks
JP5812896B2 (ja) * 2012-02-28 2015-11-17 三菱重工業株式会社 流動層乾燥装置、ガス化複合発電設備および乾燥方法
CN102679689B (zh) * 2012-04-25 2014-10-22 曲靖众一精细化工股份有限公司 低耗能低排放且保煤质的化工原料煤安全干燥方法及装置
CN103277155B (zh) * 2013-05-20 2016-01-13 华北电力大学 褐煤预干燥-预热空气-余热利用复合燃煤发电系统
CN103573308B (zh) * 2013-11-12 2015-09-09 中国电力工程顾问集团西南电力设计院有限公司 一种1000mw火电机组汽轮机9级回热抽汽系统
EP2894303A1 (fr) * 2014-01-10 2015-07-15 Siemens Aktiengesellschaft Procédé de stockage intermédiaire d'énergie électrique excédentaire

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DE931617C (de) * 1949-07-17 1955-08-11 Grosskraftwerk Mannheim A G Verfahren zum Betreiben einer Kohlenstaubfeuerung mit Mahltrocknung, Erwaermung der Brueden und Abfuehrung eines Teiles der Bruedenmenge ins Freie
CS273337B2 (en) * 1986-12-31 1991-03-12 Rheinische Braunkohlenw Ag Method of damp loose materials drying in a drier with a whirling bed and equipment for carrying out this method
FI80757C (fi) * 1988-06-30 1990-07-10 Imatran Voima Oy Kombinerat gasturbins- och aongturbinskraftverk och foerfarande foer att utnyttja braenslets vaerme-energi foer att foerbaettra kraftverksprocessens totala verkningsgrad.
DD277735A1 (de) * 1988-12-07 1990-04-11 Orgreb Inst Kraftwerke Verfahren zur erzeugung elektrischer energie und/oder heiz- und prozesswaerme
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Also Published As

Publication number Publication date
DE4105128A1 (de) 1992-08-20
AU651871B2 (en) 1994-08-04
WO1992014802A1 (fr) 1992-09-03
JPH07507333A (ja) 1995-08-10
EP0639214A1 (fr) 1995-02-22
AU1234792A (en) 1992-09-15
DE59206257D1 (de) 1996-06-13

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