EP0224050B1 - Kohlegefeuerter Dampferzeuger für Kohle-Kombiblock - Google Patents

Kohlegefeuerter Dampferzeuger für Kohle-Kombiblock Download PDF

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Publication number
EP0224050B1
EP0224050B1 EP86114857A EP86114857A EP0224050B1 EP 0224050 B1 EP0224050 B1 EP 0224050B1 EP 86114857 A EP86114857 A EP 86114857A EP 86114857 A EP86114857 A EP 86114857A EP 0224050 B1 EP0224050 B1 EP 0224050B1
Authority
EP
European Patent Office
Prior art keywords
flue gas
steam
coal
sodium
steam generator
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
Application number
EP86114857A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0224050A1 (de
Inventor
Wulf Dr.-Ing. Rettemeier
Horst Dipl.-Ing. Müller
Bernd Dipl.-Ing. Sudau
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.)
Hitachi Zosen Inova Steinmueller GmbH
Original Assignee
L&C Steinmueller GmbH
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 L&C Steinmueller GmbH filed Critical L&C Steinmueller GmbH
Publication of EP0224050A1 publication Critical patent/EP0224050A1/de
Application granted granted Critical
Publication of EP0224050B1 publication Critical patent/EP0224050B1/de
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
    • F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
    • F22B33/18—Combinations of steam boilers with other apparatus

Definitions

  • the invention relates to a coal-fired steam generator with a water-steam circuit and a low-pressure heat transfer medium circuit which, via a heater arranged in the flue gas stream of the steam generator, decouples heat from the flue gas stream with at least one heating surface and incorporates it into a heat-consuming process, in particular coal Combination block with a steam turbine switched on in the water-steam cycle and a gas turbine process, the flue gas stream being divided into at least two parallel flue gas flues connected downstream of the combustion chamber, one of which is the water-steam cycle and the other the low-pressure heat transfer medium Circuit is assigned.
  • low-pressure heat transfer medium is understood to mean a heat transfer medium which, in contrast to steam, can be used for heat transfer at lower pressures.
  • this includes helium and metals, such as sodium, as well as oils and salts, which are liquid at low pressures up to very high temperatures and can therefore be pumped.
  • the known steam generator is not suitable for the use of sodium as a low-pressure heat transfer medium, since the smoke flue associated with the horizontally arranged low-pressure heat transfer circuit can drain sodium into the combustion chamber in the event of a leak.
  • the present invention has for its object to make the transfer of heat to the low-pressure heat transfer circuit more economical, the combustion in the combustion chamber itself should not be affected.
  • This object is achieved in that the flue gas stream emerging from the low-pressure heat carrier flue gas flue is fed to the water-steam flue gas flue at a point at which the temperature of the partial flue gas flow supplied essentially corresponds to the temperature of the flue gas flowing in the water-steam flue gas flue .
  • This guidance of the flue gas from one flue gas flue into the other is particularly advantageous, since the flue gas in the low-pressure heat transfer flue gas flue cannot be cooled down to the same extent as in the water-steam flue gas flue.
  • the outlet temperature from the sodium train is 480 ° C. when the sodium enters at a temperature of 380 ° C. and a temperature of 950 ° C exits.
  • the inlet temperature of the flue gas in the water-steam flue gas flue is 1180 ° C and the outlet temperature of the flue gas is 190 ° C.
  • the water-steam flue gas flue is preferably arranged between the combustion chamber and the low-pressure heat transfer flue gas flue. This separates the low-pressure heat transfer flue from the combustion chamber, so that there is a sodium leak no sodium can enter the combustion chamber in the low-pressure heat transfer flue. Furthermore, the sodium flue gas flue is accessible from at least three sides in this way, so that in the event of sodium leaks, easier repair of the damage is given. Furthermore, the separation of the sodium flue gas flue from the water-steam flue gas flue ensures that the steam generator can continue to operate safely without heat being extracted via the sodium circuit. In the case of a vertically arranged sodium train, the overall upward flow of sodium in the heater allows natural circulation and thus emergency cooling in the event of failure of the pump capacity arranged in the sodium circuit.
  • the sodium flue gas train is preferably designed as a control train so that the extraction of heat can be controlled via the sodium circuit.
  • the steam generator 1 consists of a combustion chamber 2 and two flue gas ducts 3 and 4 connected in parallel. A large number of burners 2a fired with coal are assigned to the combustion chamber 2.
  • the flue gas duct 3 lying between the combustion chamber 2 and the external flue gas duct 4 is assigned to the water-steam circuit of the steam generator and has a multiplicity of heating surfaces 3a which are acted upon by water or steam. Except for point A, the flue gas flue is essentially evenly covered with heating surfaces 3a.
  • the external flue gas duct 4 is integrated in a sodium circuit, for example in the sodium circuits according to Figure 10 or 11 on page 550 of DE-Z. VGB Kraftwerkstechnik, 65th year, volume 6 (1985).
  • a component of the sodium circuit is a heater which, in the embodiment shown, consists of a plurality of heating surfaces 4a arranged one above the other, which are connected in series.
  • the sodium in the heating surfaces 4a connected in series rises from the bottom to the top
  • the partial flue gas flow associated with the flue gas flow 4 flows in countercurrent from the top to the bottom.
  • the flue gas emerging from the flue gas duct 4 below is fed to the flue gas duct 3 at point A via at least one flue gas duct 7, since the outlet temperature of the flue gas from the flue gas duct 4 essentially corresponds to the temperature prevailing at point A.
  • One or more control flaps 8 are arranged in the at least one flue gas duct 7 in order to regulate the quantity of flue gas entering the flue gas duct 4 and thus the heat to be coupled out via the sodium circuit.
  • inlet 5 and outlet 6 there can preferably be a connection line which can be switched on and off and which can be switched on in the event of failure of the circulation pump or pumps present in the sodium circuit in order to enable natural circulation and emergency cooling. It is also possible for the pumps to be assigned corresponding bypass lines.
  • the heating surfaces 3a and 4a are preferably on the same levels, so that the same platforms and possibly the same auxiliary devices can be assigned to them.
  • the heater is preferably constructed from a multiplicity of heating surfaces 4a which are connected in series with respect to the low-pressure heat transfer medium circuit and which are arranged in cocurrent or countercurrent with respect to the flue gas stream.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Air Supply (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP86114857A 1985-11-07 1986-10-25 Kohlegefeuerter Dampferzeuger für Kohle-Kombiblock Expired EP0224050B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3539481 1985-11-07
DE19853539481 DE3539481A1 (de) 1985-11-07 1985-11-07 Kohlegefeuerter dampferzeuger fuer kohle-kombiblock

Publications (2)

Publication Number Publication Date
EP0224050A1 EP0224050A1 (de) 1987-06-03
EP0224050B1 true EP0224050B1 (de) 1989-03-15

Family

ID=6285371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114857A Expired EP0224050B1 (de) 1985-11-07 1986-10-25 Kohlegefeuerter Dampferzeuger für Kohle-Kombiblock

Country Status (5)

Country Link
US (1) US4739729A (enrdf_load_stackoverflow)
EP (1) EP0224050B1 (enrdf_load_stackoverflow)
JP (1) JPS62162806A (enrdf_load_stackoverflow)
DE (2) DE3539481A1 (enrdf_load_stackoverflow)
ZA (1) ZA868431B (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928635A (en) * 1989-07-20 1990-05-29 Mack Shelor Power plant and method of retrofitting existing power plants
CA2105602A1 (en) * 1993-09-07 1995-03-08 Ola Herstad Steam boiler
US5755187A (en) * 1993-09-08 1998-05-26 Gotaverken Energy Ab Steam boiler with externally positioned superheating means
FI96436C (fi) * 1994-08-10 1996-06-25 Ahlstroem Oy Menetelmä ja laite jätelipeän käsittelemiseksi
FI98384C (fi) * 1995-06-02 2005-07-07 Andritz Oy Syöttöveden esilämmitinjärjestelmä
US5683550A (en) * 1996-02-05 1997-11-04 Ahlstrom Recovery Inc. Method and apparatus for increasing recovery boiler capacity by withdrawing combustible gas from the furnace
US7803216B2 (en) * 2005-12-28 2010-09-28 Mitsubishi Heavy Industries, Ltd. Pressurized high-temperature gas cooler
JP5575342B1 (ja) * 2014-02-03 2014-08-20 三菱重工業株式会社 ガス化炉冷却構造、ガス化炉及びガス化炉のアニュラス部拡大方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1070768B (enrdf_load_stackoverflow) * 1952-11-14
DE3203082A1 (de) * 1982-01-30 1983-08-04 Rudolf Dr. 6800 Mannheim Wieser Kombinierte gasturbinen-dampfturbinenanlage bzw. kombinierte gasturbinen-dampferzeugeranlage

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2985153A (en) * 1951-12-07 1961-05-23 Bailey Meter Co Vapor generation and superheating
US3105469A (en) * 1952-08-07 1963-10-01 L & C Steinmiller G M B H Rotating regenerative air preheater for excessive air heating
DE976754C (de) * 1953-09-26 1964-04-16 Steinmueller Gmbh L & C Mit verschiedenen Brennstoffen beheizter Dampferzeuger
US2926636A (en) * 1953-11-18 1960-03-01 Bailey Meter Co Steam temperature control
US3060906A (en) * 1961-10-19 1962-10-30 Riley Stoker Corp Control of superheat
US3146762A (en) * 1962-05-24 1964-09-01 Riley Stoker Corp Steam generating unit
US3345795A (en) * 1964-05-18 1967-10-10 Ralph F Anderson Method and apparatus for packaging bars of plastic material
US3396705A (en) * 1966-03-04 1968-08-13 Duerrwerke Ag Vapor generator
US3426734A (en) * 1966-12-23 1969-02-11 Combustion Eng Vapor generator having gas recirculation system using gas ejector
FR2443643A1 (fr) * 1978-12-06 1980-07-04 Creusot Loire Appareil de chauffe fournissant de la vapeur d'eau et du gaz chaud
FR2523268A1 (fr) * 1982-03-11 1983-09-16 Novatome Dispositif de production de vapeur par echange de chaleur entre un metal liquide caloporteur et de l'eau alimentaire comportant plusieurs interfaces metal liquide-gaz neutre
US4451003A (en) * 1983-06-09 1984-05-29 Exxon Research And Engineering Co. Control scheme and apparatus for a cogeneration boiler

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1070768B (enrdf_load_stackoverflow) * 1952-11-14
DE3203082A1 (de) * 1982-01-30 1983-08-04 Rudolf Dr. 6800 Mannheim Wieser Kombinierte gasturbinen-dampfturbinenanlage bzw. kombinierte gasturbinen-dampferzeugeranlage

Also Published As

Publication number Publication date
DE3539481C2 (enrdf_load_stackoverflow) 1988-09-29
DE3662460D1 (en) 1989-04-20
US4739729A (en) 1988-04-26
EP0224050A1 (de) 1987-06-03
ZA868431B (en) 1987-06-24
DE3539481A1 (de) 1987-05-21
JPS62162806A (ja) 1987-07-18

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