DE543797C - Steam generator with heat exchanger heated with deflagration of the fuel-air mixture - Google Patents

Steam generator with heat exchanger heated with deflagration of the fuel-air mixture

Info

Publication number
DE543797C
DE543797C DE1928543797D DE543797DD DE543797C DE 543797 C DE543797 C DE 543797C DE 1928543797 D DE1928543797 D DE 1928543797D DE 543797D D DE543797D D DE 543797DD DE 543797 C DE543797 C DE 543797C
Authority
DE
Germany
Prior art keywords
fuel
steam generator
deflagration
air mixture
heat exchanger
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
DE1928543797D
Other languages
German (de)
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.)
BROWN AG
BBC Brown Boveri France SA
Original Assignee
BROWN AG
BBC Brown Boveri France SA
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 BROWN AG, BBC Brown Boveri France SA filed Critical BROWN AG
Application granted granted Critical
Publication of DE543797C publication Critical patent/DE543797C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00Methods of steam generation characterised by form of heating method
    • F22B1/22Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Description

Dampferzeuger mit unter Verpuffen des Brennstoffluftgemisches beheiztem Wärmeträger Es sind Dampferzeuger vorgeschlagen worden, bei denen das Brennstoffluftgemisch in druckfesten Kammern unter höherem Druck verbrannt oder verpufft wird und das entstehende Druckgefälle dazu dient, den Heizgasen eine sehr hohe Geschwindigkeit (w > 200 m/Sek.) zuerteilen. Durch diese hohe Strömungsgeschwindigkeit werden einerseits die Wärmeübergänge ganz bedeutend erhöht, andererseits aber auch die zur Führung der Rauchgase erforderlichen Querschnitte stark vermindert. Die Abmessungen des gesamten Verdampfungsteiles eines derartigen Dampferzeugers sind daher sehr gering und bleiben z. B. weit unter den Abmessungen, die ein gewöhnlicher Kessel unter den besten Verhältnissen allein für die wirksamen Heizflächen benötigt. Wegen der großen Strömungsgeschwindigkeit und höheren Dichte der Heizgase müssen ferner auch die Abmessungen der als Heizfläche dienenden Heizrohre klein gehalten werden. Es drängt sich somit die Wärmeabgabe auf einen äußerst kleinen Raum zusammen, so daß es schwierig wird, die Zufuhr des kalten und die Abfuhr des erhitzten Betriebsmittels zu den Heizrohren zuverlässig durchzuführen. Wird an den Heizrohren gar verdampft, so besteht die Gefahr, daß die in jedem Fall sehr stürmisch vor sich gehende Verdampfung den Zustrom von kälterem Wasser verhindert, so daß das Bespülen und die Wärmeaufnahme aus der Wand ungenügend ist, die Rohre also überhitzt und die Heizgase zu wenig abgekühlt werden. Es ist nun schon vorgeschlagen worden, bei gewöhnlichen Kesseln nicht an den von den Rauchgasen bestrichenen Flächen zu verdampfen, sondern einen zweiten Stoff nur zu erhitzen, der seine Wärme in einem zweiten Heizflächensystem, an dessen Wänden dann die Verdampfung des Wassers erfolgt, abgibt. Die Veranlassung zu dieser Maßnahme ist hier aber nicht die räumliche Beschränkung, sondern der Umstand, daß man die durch die Verdampfung verursachte, korrodierende und erodierende Wirkung des Wassers und auch zu hohe Drücke an den vom. Feuer bestrahlten oder. von den Rauchgasen bestrichenen Wänden vermeiden will.Steam generator with heated with deflagration of the fuel-air mixture Heat transfer medium Steam generators have been proposed in which the fuel-air mixture is burned or deflagrated in pressure-tight chambers under higher pressure and that The resulting pressure gradient is used to give the heating gases a very high speed (w> 200 m / sec.). Due to this high flow rate, on the one hand the heat transfers increased significantly, but on the other hand also those for guidance the cross-sections required for the flue gases are greatly reduced. The dimensions of the entire evaporation part of such a steam generator are therefore very small and stay z. B. far below the dimensions that an ordinary boiler takes the best conditions for the effective heating surfaces alone. Because of the high flow velocity and higher density of the heating gases must also be used the dimensions of the heating tubes serving as heating surfaces can be kept small. It Thus, the heat dissipation squeezes into an extremely small space, so that it becomes difficult to supply the cold equipment and remove the heated equipment to be carried out reliably to the heating pipes. If it even evaporates on the heating pipes, so there is a risk that the evaporation, which is very stormy in any case, will occur prevents the influx of colder water, so that the flushing and the heat absorption from the wall is insufficient, i.e. the pipes are overheated and the heating gases too little be cooled down. It has now been suggested for ordinary boilers not to evaporate on the surfaces coated by the smoke gases, but one only to heat up the second material, which gets its heat in a second heating surface system, on the walls of which the evaporation of the water then takes place, gives off. The cause to this measure, however, is not the spatial restriction, but the fact that the corrosive and erosive effect caused by evaporation of the water and too high pressures at the from. Irradiated fire or. of the Wants to avoid smoke fumes painted walls.

Gemäß vorliegender Erfindung soll nun auch bei einem Dampferzeuger, bei welchem ein Brennstoff in einer Brennkammer unter Druckentwicklung verbrannt wird und die Heizgase mit sehr hoher Geschwindigkeit (w > 200 m/Sek.) an den Heizflächen vorbeigeführt werden, die Erzeugung des Dampfes nicht an diesen Heizrohren, sondern mittelbar erfolgen, d. h. durch einen Wärmeträger, der durch die rasch strömenden Heizgase erwärmt wurde.According to the present invention, a steam generator should now also in which a fuel is burned in a combustion chamber under pressure development and the heating gases at very high speed (w> 200 m / sec.) on the heating surfaces are bypassed, the generation of the steam not on these heating pipes, but take place indirectly, d. H. by a heat transfer medium that flows through the rapidly flowing Heating gases was heated.

Als Wärmeträger können beispielsweise die bekanntenhocbsiedenden Flüssigkeiten dienen.. Die eigentliche Dampferzeugung findet in bekannter Weise in einem getrennten Behälter statt, der mit Heizflächen versehen ist, die vom Wärmeträger durchflossen werden.The known high-boiling liquids, for example, can be used as heat carriers serve .. The actual steam generation takes place in a known manner in a separate Container instead, which is provided with heating surfaces through which the heat transfer medium flows will.

Claims (1)

-PATE.NTANSPRUCH: Dampferzeuger, bei dem ein Brennstoff in einer -Brennkammer unter Druckentwicklung verbrannt wird und die Heizgase mit sehr großer Geschwindigkeit (w ) ioo m/Sek.) an den Heizflächen vorbeigeführt werden, dadurch gekennzeichnet, daß die Dampferzeugung mittelbar, d. h. durch einen Wärmeträger erfolgt, der durch die rasch strömenden Heizgase erwärmt wurde. --PATE.NTANSPRUCH: Steam generator in which a fuel is in a combustion chamber is burned under pressure and the heating gases at very high speed (w) 100 m / sec.) are guided past the heating surfaces, characterized in that that the steam generation is indirect, d. H. takes place by a heat transfer medium, which through the rapidly flowing heating gases was heated. -
DE1928543797D 1928-01-20 1928-01-20 Steam generator with heat exchanger heated with deflagration of the fuel-air mixture Expired DE543797C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE543797T 1928-01-20

Publications (1)

Publication Number Publication Date
DE543797C true DE543797C (en) 1932-02-10

Family

ID=6560176

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1928543797D Expired DE543797C (en) 1928-01-20 1928-01-20 Steam generator with heat exchanger heated with deflagration of the fuel-air mixture

Country Status (1)

Country Link
DE (1) DE543797C (en)

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