EP0349767B1 - Zwangdurchlaufdampferzeuger - Google Patents

Zwangdurchlaufdampferzeuger Download PDF

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Publication number
EP0349767B1
EP0349767B1 EP89109988A EP89109988A EP0349767B1 EP 0349767 B1 EP0349767 B1 EP 0349767B1 EP 89109988 A EP89109988 A EP 89109988A EP 89109988 A EP89109988 A EP 89109988A EP 0349767 B1 EP0349767 B1 EP 0349767B1
Authority
EP
European Patent Office
Prior art keywords
pipes
funnel
combustion chamber
walls
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 - Lifetime
Application number
EP89109988A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0349767A1 (de
Inventor
Manfred Klein
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 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 Energie und Umwelttechnik AG filed Critical Deutsche Babcock Werke Energie und Umwelttechnik AG
Priority to AT89109988T priority Critical patent/ATE89387T1/de
Publication of EP0349767A1 publication Critical patent/EP0349767A1/de
Application granted granted Critical
Publication of EP0349767B1 publication Critical patent/EP0349767B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/14—Supply mains, e.g. rising mains, down-comers, in connection with water tubes
    • F22B37/146—Tube arrangements for ash hoppers and grates and for combustion chambers of the cyclone or similar type out of the flues

Definitions

  • the invention relates to a once-through steam generator with a combustion chamber, which is provided at the lower end with a funnel, with the features of the preamble of claim 1.
  • a combustion chamber funnel with vertically arranged pipes has a non-uniform geometry for constructional reasons, which, when heated, leads to uneven heat absorption of the medium flowing in the funnel pipes. This uneven heat absorption occurs more at part load when only a part of the burners, in particular those which are arranged close to the funnel, are acted upon. The same applies to increases in load which are controlled with a fire reserve.
  • the uneven heating of the medium in the funnel area continues in the tube walls of the combustion chamber connected as evaporators. The result is different temperatures in the combustion chamber walls.
  • the invention has for its object to design the generic once-through steam generator so that with a low NO x firing of the steam generator, a uniform flow through the evaporator tubes can be achieved without increasing the pressure loss.
  • a once-through steam generator has a combustion chamber 1 which is heated by a burner and merges into a funnel 2 at the lower end.
  • the steam generator can be a tower boiler or a two-pass boiler.
  • the combustion chamber 1 is connected to a second flue gas flue, not shown, via a cross train 3, which is only partially shown.
  • Bundle heating surfaces 4 are arranged in the transverse train 3 and the second flue gas train.
  • the combustion chamber 1 has four walls formed by gas-tight tube walls, namely a front wall 5, a right side wall 6, a rear wall 7 and a left side wall 8.
  • the tubes of the combustion chamber walls run obliquely in the form of a screw winding (Fig. 3). It is also possible not to fit the pipes of all combustion chamber walls, e.g. only the tubes of the front wall 5 and the rear wall 7 have to be inclined, while the tubes of the side walls 6, 8 are arranged horizontally (FIG. 2).
  • the front wall 9 and the rear wall 11 of the funnel 2 are inclined and have a length that is constant over the height.
  • the side walls 10, 12 of the funnel 2 are arranged vertically and become narrower towards the bottom.
  • the tubes of the funnel 2 are arranged vertically.
  • the tubes of the funnel side walls 10, 12 start from staggered funnel collectors 13, which are connected via an inlet collector 14 to an economizer, not shown.
  • the funnel tubes open into two outlet headers 15, which are located on both sides of the center line of the funnel side walls 10, 12.
  • One of the outlet collectors 15 of the funnel side walls 10, 12 is connected to one of two inlet collectors 16 of the funnel front wall 9 and the funnel rear wall 11 (FIG. 2).
  • the funnel tubes of the funnel front wall 9 and the funnel rear wall 11 extend, which in turn merge directly into the sloping tubes of the combustion chamber front wall 5 and the combustion chamber rear wall 7 via shaped sticks.
  • the sloping pipes of the combustion chamber front wall 5 and the combustion chamber rear wall 7 are continued in the horizontal pipes of the combustion chamber side walls 6, 8.
  • the described circuits of the funnel walls 9, 10, 11, 12 make it possible for the medium to have approximately the same enthalpy in all tubes when entering the combustion chamber walls 5, 6, 7, 8 connected as evaporators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Medical Bathing And Washing (AREA)
  • Detergent Compositions (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
EP89109988A 1988-07-06 1989-06-02 Zwangdurchlaufdampferzeuger Expired - Lifetime EP0349767B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89109988T ATE89387T1 (de) 1988-07-06 1989-06-02 Zwangdurchlaufdampferzeuger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3822804A DE3822804A1 (de) 1988-07-06 1988-07-06 Zwangsdurchlaufdampferzeuger
DE3822804 1988-07-06

Publications (2)

Publication Number Publication Date
EP0349767A1 EP0349767A1 (de) 1990-01-10
EP0349767B1 true EP0349767B1 (de) 1993-05-12

Family

ID=6358042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89109988A Expired - Lifetime EP0349767B1 (de) 1988-07-06 1989-06-02 Zwangdurchlaufdampferzeuger

Country Status (7)

Country Link
US (1) US4953509A (es)
EP (1) EP0349767B1 (es)
JP (1) JP3030560B2 (es)
AT (1) ATE89387T1 (es)
DE (2) DE3822804A1 (es)
DK (1) DK328489A (es)
ES (1) ES2040407T3 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2004258031B2 (en) * 2003-07-22 2010-12-23 Mitsubishi Hitachi Power Systems, Ltd. Boiler apparatus

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB298878A (en) * 1928-05-10 1928-10-18 Babcock Und Wilcox Dampfkessel Improvements in and connected with ash cooling screens for furnaces
NL241904A (es) * 1958-08-01
DE1255669B (de) * 1961-07-27 1967-12-07 Gebruder Sulzer Aktiengesellschaft Wmterthvr (Schweiz) Zwangdurch laufdampferzeuger
DE1235330B (de) * 1964-04-23 1967-03-02 Ver Kesselwerke Ag Zwangdurchlaufkessel mit verschweissten Rohren
US3665893A (en) * 1970-12-29 1972-05-30 Babcock & Wilcox Co Vapor generator tube arrangement
US4344388A (en) * 1977-11-07 1982-08-17 Foster Wheeler Energy Corporation Vapor generating system utilizing integral separators and angularly arranged furnace boundary wall fluid flow tubes having rifled bores
US4191133A (en) * 1977-11-07 1980-03-04 Foster Wheeler Energy Corporation Vapor generating system utilizing integral separators and angularly arranged furnace boundary wall fluid flow tubes having rifled bores
US4178881A (en) * 1977-12-16 1979-12-18 Foster Wheeler Energy Corporation Vapor generating system utilizing angularly arranged bifurcated furnace boundary wall fluid flow tubes
SU819494A1 (ru) * 1979-05-24 1981-04-07 Предприятие П/Я Р-6413 Испарительна поверхность нагрева
US4244327A (en) * 1979-06-11 1981-01-13 Combustion Engineering, Inc. Steam generator arrangement
DE3207987A1 (de) * 1982-03-05 1983-09-15 Evt Energie- Und Verfahrenstechnik Gmbh, 7000 Stuttgart Brennkammer-rohrauskleidung
US4473035A (en) * 1982-08-18 1984-09-25 Foster Wheeler Energy Corporation Splitter-bifurcate arrangement for a vapor generating system utilizing angularly arranged furnace boundary wall fluid flow tubes
DE3525676A1 (de) * 1985-07-18 1987-01-22 Kraftwerk Union Ag Dampferzeuger

Also Published As

Publication number Publication date
JPH0252903A (ja) 1990-02-22
US4953509A (en) 1990-09-04
JP3030560B2 (ja) 2000-04-10
DE58904318D1 (de) 1993-06-17
DE3822804A1 (de) 1990-01-11
DK328489D0 (da) 1989-07-03
ES2040407T3 (es) 1993-10-16
EP0349767A1 (de) 1990-01-10
ATE89387T1 (de) 1993-05-15
DK328489A (da) 1990-01-07

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