EP0199251A1 - Générateur de vapeur à chaleur perdue - Google Patents

Générateur de vapeur à chaleur perdue Download PDF

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Publication number
EP0199251A1
EP0199251A1 EP86105132A EP86105132A EP0199251A1 EP 0199251 A1 EP0199251 A1 EP 0199251A1 EP 86105132 A EP86105132 A EP 86105132A EP 86105132 A EP86105132 A EP 86105132A EP 0199251 A1 EP0199251 A1 EP 0199251A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
steam generator
recovery steam
generator according
heat recovery
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.)
Granted
Application number
EP86105132A
Other languages
German (de)
English (en)
Other versions
EP0199251B1 (fr
Inventor
Hermann Brückner
Winfried Dipl.-Ing. Ganzer
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.)
Siemens AG
Original Assignee
Kraftwerk Union AG
Siemens 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 Kraftwerk Union AG, Siemens AG filed Critical Kraftwerk Union AG
Publication of EP0199251A1 publication Critical patent/EP0199251A1/fr
Application granted granted Critical
Publication of EP0199251B1 publication Critical patent/EP0199251B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1838—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines the hot gas being under a high pressure, e.g. in chemical installations
    • F22B1/1846—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines the hot gas being under a high pressure, e.g. in chemical installations the hot gas being loaded with particles, e.g. waste heat boilers after a coal gasification plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B29/00—Steam boilers of forced-flow type
    • F22B29/02—Steam boilers of forced-flow type of forced-circulation type

Definitions

  • the invention relates to a waste heat steam generator for hot, dust-laden, pressurized gases with a gas supply line, with a gas discharge line and with heat exchanger elements through which a cooling medium flows.
  • Heat recovery steam generators are known. They are used in particular in gas and steam turbine power plants. They serve to use the heat content of the hot exhaust gases from the gas turbine to generate additional live steam. They generally consist of a cylindrical or rectangular chimney-like structure in which the hot exhaust gases flow through the heat exchanger tubes of the convection heating surfaces of the final superheaters, reheaters, evaporators and economizers one after the other from bottom to top.
  • Such heat recovery steam generators are also used behind reduction systems and in chemical processes for heat recovery.
  • waste heat steam generators which are arranged behind combustion layers, it is also known to let the combustion gases flow into the waste heat boiler from top to bottom and to arrange the heat exchanger heating surfaces in reverse order (cf.Fuel-Thermal Power 35, 1983, No. 11, pages 465 to 470, as well as issue No. 12, pages 499 to 504).
  • a heat exchanger is known from GB 653 540, in which the hot gas supply line is guided concentrically to the gas discharge line. But it is a peculiarity of this steam generator that it can only be used for dust-free gases. because this would cause the lower callot to settle and block the further gas flow.
  • the invention is based on the object. to create a waste heat steam generator for hot, dust-laden and at the same time pressurized gases, which works with the greatest possible efficiency, is inexpensive to manufacture and requires little space.
  • the full gas pressure can be absorbed by the cooler outer walls of the pressure vessel.
  • the peripheral walls of the heat exchanger space exposed to the hot gas flow need only absorb the pressure difference between the inflowing hot gas and the outflowing cooled gas.
  • This pressure difference is on the order of a few meters of water column and is essentially determined by the flow resistance that the heat exchanger elements offer to the gas flow.
  • This structure also ensures that the outer wall of the pressure vessel of the heat recovery steam generator only has to be insulated against a temperature which is approximately between 100 ° and 250 °. In this way, the cost of thermal insulation is also reduced and the heat loss can be significantly reduced.
  • the connection of the gas supply line at the upper end of a heat exchanger space which is open at the bottom results in less susceptibility to contamination by the dust particles carried along.
  • the thermally highly stressed gas supply line can be largely relieved of pressure loads and at the same time the heat loss can be reduced in that the thermal insulation must be matched to the much lower temperature of the gas discharge line.
  • the stability of the surrounding walls as well as the gas supply line can be significantly increased if they carry the heat exchanger tubes in an advantageous further development of the invention.
  • the figure is a schematic representation of the heat recovery steam generator according to the invention connected to a coal gasifier.
  • the figure shows the structure of the heat recovery steam generator 3 connected between a coal gasifier 1 and a gas cleaning system 2.
  • the gas supply line 4 coming from the coal gasifier 1 opens from the top downwards and leads centrally in a pressure vessel 5 arranged in the heat exchanger space 6.
  • This heat exchanger space is open at the bottom and opens there into the Pressure vessel 5.
  • the space between the peripheral walls of the heat exchanger space 6 and the outer wall of the pressure vessel 5 is in turn connected at the upper end of the pressure vessel to a pressure-resistant gas discharge line 8 enclosing the gas supply line 4.
  • the bottom 10 of the pressure vessel 5 is funnel-shaped and carries an ash discharge device 11 at its lowest point. This consists of an ash lock 12 with two valves 13, 14 connected in series.
  • Your fin tubes are connected in series with those of the surrounding walls 7.
  • the heat exchanger tubes of the economizer heating surfaces 18, the evaporator heating surfaces 17 and the fin tubes of the gas supply line 4 are connected on the output side to a common water / steam separation vessel 21.
  • the heated water is conveyed via a circulation pump 22 into two strands 25, 26 which can be acted upon independently by means of control valves 23, 24.
  • the water is conveyed into the evaporator heating surfaces 17 via one of these two strands 25 and into the fin tubes of the surrounding walls 7 of the heat exchanger space 6 and the support tubes 19, 20 connected in parallel via the other of these two strands 26.
  • the water of the circulating line 26 leaving the heat exchanger tubes of the surrounding walls 7 and the support tubes 19, 20 is passed into the heat exchanger tubes of the gas supply line 4.
  • the steam side of the water vapor separation vessel 21 is connected to the superheater heating surfaces 15, 16 which are connected in series with one another.
  • An injection cooler 28 for regulating the temperature of the live steam leaving the last superheater 15 via the live steam line 29 is installed in the steam line 27 connecting the two superheater heating surfaces.
  • a feed water line 30 coming from the condenser (not shown further here) is connected via a feed water pump 31 to the input of the economizer 18.
  • the hot, dust-containing raw gas generated there flows via the gas feed line 4 from above into the heat exchanger space 6 of the heat recovery steam generator 3.
  • This gas has a temperature of about 1000 to 1400 ° C and due to the leaching of the coal gasifier 1 a pressure of 10 to 60 bar. It is heavily loaded with dust particles. It initially flows through the heat exchanger space 6: the open superheater heating surfaces 15. 16. Then the evaporator heating surfaces 17 and finally the Econemiser heating surfaces 18 in order to flow largely cooled at the lower open end of the heat exchanger space 6 into the pressure vessel 5 and to be deflected by 180 °. Outside cer surrounding walls 7 of the heat exchanger space 6, but within the pressure vessel 5, the cooled raw gas flows up again.
  • the dust particles become 10 ces both by the deflection by 180 ° and also by gravity in the ash funnel in the floor Pressure container hurled.
  • the ash can be removed there via the ash discharge device 11.
  • the gas which has been largely freed of ash and cooled to 150 to 400 ° C., now flows upwards in the pressure vessel 5 and almost back to the coal gasifier 1 via the gas discharge line 8 surrounding the gas supply line 4. Via the branch 9 in the gas exhaust line 8, it flows to the gas cleaning system 2. On this way back, it also cools the gas supply line 4 and supports it with its pressure, so that the gas supply line 4 only the differential pressure between those flowing into the heat recovery steam generator 3 and those leaving it Gas flow must take up.
  • Fresh feed water is fed into the economizer heating surfaces 18 through the feed water line 30 via the feed water pump 31.
  • the heated feed water leaving the economizer heating surfaces 18 is partly fed into the evaporator heating surfaces 17 via the water / steam separating vessel 21, the circulation pump 22 and from there is fed back into the steam separating vessel 21 with steam.
  • Parallel to the evaporator heating surfaces 17, part of the heated feed water is also conveyed into the heat exchanger tubes of the surrounding walls 7 of the heat exchanger chamber 6 and the gas supply line 4.
  • the steamed feed water is also conveyed into the water-steam separation vessel 21. There, the feed water separated from the steam is fed back to the circulation pump 22.
  • the steam passes from the water vapor separation vessel 21 into the two superheater heating surfaces 15, 16 connected in series. From the second superheater heating surface 15, the steam flows directly via the live steam line 29 to the consumer.
  • the quality of the live steam can also be regulated by the injection cooler 28 connected between the two superheater heating surfaces in the steam line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Chimneys And Flues (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP86105132A 1985-04-26 1986-04-14 Générateur de vapeur à chaleur perdue Expired EP0199251B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853515174 DE3515174A1 (de) 1985-04-26 1985-04-26 Abhitzedampferzeuger
DE3515174 1985-04-26

Publications (2)

Publication Number Publication Date
EP0199251A1 true EP0199251A1 (fr) 1986-10-29
EP0199251B1 EP0199251B1 (fr) 1988-06-29

Family

ID=6269241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105132A Expired EP0199251B1 (fr) 1985-04-26 1986-04-14 Générateur de vapeur à chaleur perdue

Country Status (5)

Country Link
US (1) US4738224A (fr)
EP (1) EP0199251B1 (fr)
AU (1) AU583614B2 (fr)
DE (2) DE3515174A1 (fr)
IN (1) IN163199B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001088435A1 (fr) * 2000-05-19 2001-11-22 Shell Internationale Research Maatschappij B.V. Processus de chauffage de vapeur
US6886501B2 (en) 2001-05-17 2005-05-03 Shell Oil Company Apparatus and process for heating steam
CN101135432A (zh) * 2006-09-01 2008-03-05 巴布考克及威尔考克斯公司 用于容纳和冷却合成气体的蒸汽发生器

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1312292C (fr) * 1987-04-06 1993-01-05 Daniel Dupuis Sac filtrant et filtre
JP2554101B2 (ja) * 1987-09-28 1996-11-13 三菱重工業株式会社 排ガスボイラ
US5311844A (en) * 1992-03-27 1994-05-17 Foster Wheeler Energy Corporation Internested superheater and reheater tube arrangement for heat recovery steam generator
JP3017623B2 (ja) * 1993-09-28 2000-03-13 株式会社日立製作所 石炭ガス化装置
US5921285A (en) * 1995-09-28 1999-07-13 Fiberspar Spoolable Products, Inc. Composite spoolable tube
DE19651678A1 (de) * 1996-12-12 1998-06-25 Siemens Ag Dampferzeuger
EP1794495B1 (fr) * 2004-09-23 2017-04-26 Siemens Aktiengesellschaft Generateur de vapeur en continu chauffe a l'aide d'un combustible fossile
KR100860493B1 (ko) * 2008-06-09 2008-09-26 정재억 냉각 탈진 장치
DE102013212286B4 (de) * 2013-06-26 2015-07-02 Lambion Energy Solutions Gmbh Anlage zur Energierückgewinnung aus heißen Gasen
US9429339B2 (en) * 2014-09-25 2016-08-30 Miclau—S.R.I. Inc. Domestic gas-fired water heater condensing flue system
JP6621310B2 (ja) * 2015-11-18 2019-12-18 三菱日立パワーシステムズ株式会社 ガス化装置、制御装置、ガス化複合発電設備及び制御方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB349345A (en) * 1930-06-24 1931-05-28 Howard John Fountain Improvements in steam generators and water heaters
CH200146A (de) * 1938-02-04 1938-09-30 Buss Ag Dampfkesselanlage.
GB653540A (en) * 1947-07-02 1951-05-16 Comb Eng Superheater Inc Improvements in steam boilers and like heat exchangers
GB772991A (en) * 1955-09-07 1957-04-17 La Mont Int Ass Ltd Improvements in and relating to forced recirculation steam generators
US3754533A (en) * 1971-11-24 1973-08-28 Babcock & Wilcox Ltd Tube support system
GB2068095A (en) * 1980-01-23 1981-08-05 Combustion Eng Steam generating heat exchanger
EP0048326A2 (fr) * 1980-09-19 1982-03-31 GebràœDer Sulzer Aktiengesellschaft Refroidisseur de gaz chauds pour une installation de gazéification de charbon
FR2522113A1 (fr) * 1982-02-24 1983-08-26 Steinmueller Gmbh L & C Chaudiere de recuperation
WO1984000411A1 (fr) * 1982-07-12 1984-02-02 Stork Ketels Mij Tot Expl Van Reservoir vertical de rayonnement
DE3248096C2 (de) * 1982-12-24 1985-01-31 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Stehende Vorrichtung zum Kühlen von unter hohem Druck stehenden Gasen mit hohem Staubanteil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2020686A (en) * 1935-11-12 Waste heat economizer
US2547589A (en) * 1947-07-02 1951-04-03 Comb Eng Superheater Inc Apparatus for extracting heat from gases under pressure
US4286528A (en) * 1979-08-30 1981-09-01 Stephen Willard Exhaust filter system
CH656637A5 (de) * 1981-10-26 1986-07-15 Sulzer Ag Gaskuehler-anordnung zu kohlevergasungsanlage.
GB2115129B (en) * 1982-02-15 1984-10-31 Shell Int Research Process for the cooling of small particles-containing gases

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB349345A (en) * 1930-06-24 1931-05-28 Howard John Fountain Improvements in steam generators and water heaters
CH200146A (de) * 1938-02-04 1938-09-30 Buss Ag Dampfkesselanlage.
GB653540A (en) * 1947-07-02 1951-05-16 Comb Eng Superheater Inc Improvements in steam boilers and like heat exchangers
GB772991A (en) * 1955-09-07 1957-04-17 La Mont Int Ass Ltd Improvements in and relating to forced recirculation steam generators
US3754533A (en) * 1971-11-24 1973-08-28 Babcock & Wilcox Ltd Tube support system
GB2068095A (en) * 1980-01-23 1981-08-05 Combustion Eng Steam generating heat exchanger
EP0048326A2 (fr) * 1980-09-19 1982-03-31 GebràœDer Sulzer Aktiengesellschaft Refroidisseur de gaz chauds pour une installation de gazéification de charbon
FR2522113A1 (fr) * 1982-02-24 1983-08-26 Steinmueller Gmbh L & C Chaudiere de recuperation
WO1984000411A1 (fr) * 1982-07-12 1984-02-02 Stork Ketels Mij Tot Expl Van Reservoir vertical de rayonnement
DE3248096C2 (de) * 1982-12-24 1985-01-31 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Stehende Vorrichtung zum Kühlen von unter hohem Druck stehenden Gasen mit hohem Staubanteil

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001088435A1 (fr) * 2000-05-19 2001-11-22 Shell Internationale Research Maatschappij B.V. Processus de chauffage de vapeur
WO2001090641A1 (fr) * 2000-05-19 2001-11-29 Shell Internationale Research Maatschappij B.V. Appareil permettant de chauffer de la vapeur
US6766772B2 (en) 2000-05-19 2004-07-27 Shell Oil Company Apparatus for heating steam
US6840199B2 (en) 2000-05-19 2005-01-11 Shell Oil Company Process for heating system
US6886501B2 (en) 2001-05-17 2005-05-03 Shell Oil Company Apparatus and process for heating steam
CN101135432A (zh) * 2006-09-01 2008-03-05 巴布考克及威尔考克斯公司 用于容纳和冷却合成气体的蒸汽发生器
CN101135432B (zh) * 2006-09-01 2013-04-24 巴布考克及威尔考克斯公司 用于容纳和冷却合成气体的蒸汽发生器

Also Published As

Publication number Publication date
EP0199251B1 (fr) 1988-06-29
IN163199B (fr) 1988-08-20
US4738224A (en) 1988-04-19
DE3515174A1 (de) 1986-11-06
AU583614B2 (en) 1989-05-04
AU5659786A (en) 1986-10-30
DE3660357D1 (en) 1988-08-04

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