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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/16—Steam 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B2700/00—Combustion apparatus for solid fuel
- F23B2700/009—Combustion 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)
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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1943
- 1943-11-11 CH CH238035D patent/CH238035A/en unknown
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