CH238035A - Procedure for operating a superheated steam system. - Google Patents

Procedure for operating a superheated steam system.

Info

Publication number
CH238035A
CH238035A CH238035DA CH238035A CH 238035 A CH238035 A CH 238035A CH 238035D A CH238035D A CH 238035DA CH 238035 A CH238035 A CH 238035A
Authority
CH
Switzerland
Prior art keywords
gas
superheater
superheated steam
steam system
pressure
Prior art date
Application number
Other languages
German (de)
Inventor
Cie Aktiengesellschaft Boveri
Original Assignee
Bbc Brown Boveri & Cie
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 Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
Publication of CH238035A publication Critical patent/CH238035A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22GSUPERHEATING OF STEAM
    • F22G1/00Steam superheating characterised by heating method
    • F22G1/16Steam superheating characterised by heating method by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil
    • 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
    • F22B1/02Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18Methods 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
    • F22B1/1838Methods 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
    • F22B1/1846Methods 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23BMETHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B2700/00Combustion apparatus for solid fuel
    • F23B2700/009Combustion apparatus for solid fuel adapted for use in various steam boilers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General 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)
  • Engine Equipment That Uses Special Cycles (AREA)

Description

  

  Verfahren zum Betriebe einer     Reissdampfanlage.       Dank der Herstellung warmfester Stähle  und der durch die Gasturbine erlangten Er  fahrungen in der Beherrschung heisser     Treib-          und    Heizgase können heute- auch Dampf  anlagen mit Frischdampf- und     Zwischenüber-          hitzungstemperaturen        betrieben    werden, die  wesentlich höher sind, als es bisher der Fall  war.

   Um hierbei aber ganz bis an die durch  die     Baustoffestigkeit    der Heizflächen ge  gebene, zulässige Höchsttemperatur heran  gehen zu können, ist es nötig, diese Hochüber  hitzung getrennt von der Dampferzeugung in  besonderen Apparaten mit eigener Feuerung  vorzunehmen, deren     Heizgastemperaturen     sich vollkommen beherrschen lassen. Als  Brennstoff kommen für die geforderte Tem  peraturregelung nur     flüssigeBrennstoffe    oder  Gase in Betracht. Beide stehen aber nicht  immer zur Verfügung oder sind zu teuer.

   Es  wird deshalb vorgeschlagen, für getrennt  gefeuerte     Überhitzer    Gas zu verwenden, das  in einem Gaserzeuger aus einem festen  Brennstoff erzeugt wird, während der oder  die Kessel unmittelbar mit dem festen Brenn-         stoff    geheizt werden. Es kann der Brennstoff  für den Gaserzeuger und die     Kesselfeuerung     der gleiche, in erster Linie natürlich Kohle,  sein.  



  Gaserzeuger und Kesselfeuerung können       zusammengebaut    werden, aber auch räumlich  ganz voneinander     getrennt    sein.  



  Getrennt gefeuerte     Überhitzer    werden  mindestens für grössere     Anlagen    mit Vorteil  mit Druckfeuerung, z. B. nach dem     Velog-          prinzip,    gebaut. Bei solchen wird bekanntlich  der Ladeverdichter, der den erhöhten     Brenn-          kammerdruck,    mindestens 0,2 atü, herstellt,  durch eine Gasturbine angetrieben, deren  Treibgase die Heizgase selbst sind.  



  Wird das Heizgas für den     Überhitzer    in  üblicher Weise in einem Gaserzeuger unter  Atmosphärendruck hergestellt, gekühlt und  gereinigt, so wird es für die Druckfeuerung  des     Überhitzers    zweckmässig durch     ein    Ge  bläse verdichtet, das von der Gasturbine oder  von     einem    besonderen Motor angetrieben  wird. Vorteilhafter ist es aber, auch den Gas  erzeuger aufzuladen, d. h. unter etwa dem      gleichen Druck, d. h. mindestens 0,2 atü, wie  die Brennkammer des     Überhitzers    zu betrei  ben, in welchem Falle nur ein Verdichter  nötig ist, der gleichzeitig die Vergasungsluft:  und die Brennluft liefert.

   Nötigenfalls kann  die Luft für den Gaserzeuger etwas höheren  Druck erhalten als die Brennluft, entspre  chend dem     Widerstand,    den diese Luft im  Gaserzeuger zu     überwinden    hat.



  Procedure for operating a steam boiler. Thanks to the production of heat-resistant steels and the experience gained through the gas turbine in the control of hot propellant and heating gases, steam systems can now also be operated with live steam and reheating temperatures that are significantly higher than was previously the case.

   In order to be able to go right up to the maximum permissible temperature given by the building material strength of the heating surfaces, it is necessary to carry out this high overheating separately from the steam generation in special devices with their own firing, the heating gas temperatures of which can be completely controlled. Only liquid fuels or gases can be used as fuel for the required temperature control. Both are not always available or are too expensive.

   It is therefore proposed to use gas for separately fired superheaters which is generated in a gas generator from a solid fuel, while the boiler or boilers are heated directly with the solid fuel. The fuel for the gas generator and the boiler can be the same, primarily coal, of course.



  The gas generator and boiler can be assembled, but they can also be completely separated from one another.



  Separately fired superheaters are at least for larger systems with advantage with pressure firing, z. B. built according to the Velog principle. As is well known, the charge compressor, which produces the increased combustion chamber pressure, at least 0.2 atmospheres, is driven by a gas turbine, the propellant gases of which are the heating gases themselves.



  If the heating gas for the superheater is produced in the usual way in a gas generator under atmospheric pressure, cooled and cleaned, it is expediently compressed by a Ge blower for the pressure firing of the superheater, which is driven by the gas turbine or by a special motor. But it is more advantageous to also charge the gas generator, d. H. under about the same pressure, d. H. at least 0.2 atmospheres, how to operate the combustion chamber of the superheater, in which case only one compressor is required, which supplies the gasification air and the combustion air at the same time.

   If necessary, the air for the gas generator can have a slightly higher pressure than the combustion air, according to the resistance that this air has to overcome in the gas generator.

 

Claims (1)

PATENTANSPRUCH: Verfahren zum Betriebe einer Ileissdampf- anlage mit getrennt gefeuerten Überhitzern, dadurch gekennzeichnet, da.ss der Brennstoff der Überhitzer ein Gas ist, das aus festem Brennstoff erzeugt wurde, während der oder die Kessel unmittelbar mit festem Brennstoff gefeuert werden. PATENT CLAIM: A method for operating an Ileissdampf- plant with separately fired superheaters, characterized in that the fuel for the superheater is a gas that was generated from solid fuel, while the boiler or boilers are fired directly with solid fuel. UNTERANSPRÜCHE: 1. Heissdampfanlage nach Patentanspruch, dadurch gekennzeichnet, dass für Dampf- erzenger und Vberhitzer der gleiche Brenn stoff Verwendung findet, der im Dampf erzeuger in fester Form. im Überhitzer nach seiner Vergasung als Gas verbrannt wird. SUBClaims: 1. Superheated steam system according to patent claim, characterized in that the same fuel is used for the steam generator and superheater that is used in the steam generator in solid form. is burned as a gas in the superheater after its gasification. 2. Heissdampfanlage nach Patentanspruch und Unteranspruch 1, dadurch gekennzeich net, dass die Verbrennung des Gases in der Brennkammer des l\berhitzers unter einem Drucke stattfindet, der mindestens 0.2 atü über dein Atmosphärendruck liegt. 2. Superheated steam system according to claim and dependent claim 1, characterized in that the combustion of the gas in the combustion chamber of the superheater takes place at a pressure which is at least 0.2 atm above atmospheric pressure. 3. Ileissdarnpf < Znlage nach Patentanspruch und U nteransprüehen 1 und ?, dadurch ge- kennzeichnet, dass sowohl die Vergasung als auch die Verbrennung des Gases unter einem Druck erfolgen, der mindestens 0.2 atü über dem Atmosphärendruck liegt. 4. Heissdampfanlage nach Patentanspruch und Unteransprüchen 1 bis ss, dadurch ge kennzeichnet, dass die Luft für die Vergasung im Gaserzeuger auf höheren Druck verdichtet wird als die Brennluft. 3. Ileissdarnpf <Znlage according to patent claim and dependent claims 1 and?, Characterized in that both the gasification and the combustion of the gas take place under a pressure which is at least 0.2 atm above atmospheric pressure. 4. Superheated steam system according to claim and dependent claims 1 to ss, characterized in that the air for gasification in the gas generator is compressed to a higher pressure than the combustion air.
CH238035D 1943-11-11 1943-11-11 Procedure for operating a superheated steam system. CH238035A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH238035T 1943-11-11

Publications (1)

Publication Number Publication Date
CH238035A true CH238035A (en) 1945-06-15

Family

ID=4460350

Family Applications (1)

Application Number Title Priority Date Filing Date
CH238035D CH238035A (en) 1943-11-11 1943-11-11 Procedure for operating a superheated steam system.

Country Status (1)

Country Link
CH (1) CH238035A (en)

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