DE451926C - Process and device for the operation of furnaces for steam boilers and superheaters - Google Patents
Process and device for the operation of furnaces for steam boilers and superheatersInfo
- Publication number
- DE451926C DE451926C DEA35965D DEA0035965D DE451926C DE 451926 C DE451926 C DE 451926C DE A35965 D DEA35965 D DE A35965D DE A0035965 D DEA0035965 D DE A0035965D DE 451926 C DE451926 C DE 451926C
- Authority
- DE
- Germany
- Prior art keywords
- superheaters
- furnaces
- steam boilers
- exhaust gases
- flat
- 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
Links
- 238000000034 method Methods 0.000 title claims description 7
- 239000007789 gas Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims 1
- 239000003517 fume Substances 0.000 claims 1
- 238000010304 firing Methods 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C99/00—Subject-matter not provided for in other groups of this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
- F23C2700/06—Combustion apparatus using pulverized fuel
- F23C2700/063—Arrangements for igniting, flame-guiding, air supply in
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Of Fluid Fuel (AREA)
Description
Verfahren und Einrichtung zum Betriebe von Feuerungen für Dampfkessel und Überhitzer. Um die Gefahr des Verbrennens der Rohre, besonders bei überhitzern, die eine eigene Feuerung besitzen zu verhüten, ist bereits vorgeschlagen worden, Rauchgase aus dem Fuchs zu entnehmen, durch einen Ventilator, Strahlapparat o. dgl. in den Feuerungsraum zurückzuleiten und mit den vollständig verbrannten, aber noch nicht abgekühlten Heizgasen zu mischen. Durch diese Mischung kann dann die Temperatur beliebig tief herabgedrückt werden, ohne daB eine Verschlechterung des Feuerungswirkungsgrades eintritt. Dieses Verfahren läßt noch weitere Verbesserungen zu, die Gegenstand vorliegender Erfindung sein sollen.Method and device for operating furnaces for steam boilers and superheater. To avoid the risk of burning the pipes, especially if they overheat, It has already been proposed to prevent those who have their own firing system, To remove smoke gases from the fox, by a fan, jet device or the like. to return to the furnace and with the completely burned, but still Mixing hot gases that have not been cooled down. This mixture can then adjust the temperature can be pressed down as deeply as desired without a deterioration in the firing efficiency entry. This process allows further improvements, which are intended to be the subject of the present invention.
Wird durch die Mischung mit den eigenen Abgasen ein wirtschaftlicher Schutz der Rohrwandungen herbeigeführt, so bleiben doch die Wandungen des Feuerungsraumes, in dem aus Gründen der Wirtschaftlichkeit der Brennstoff mit geringem Luftüberschuß, d. h. mit sehr hoher Temperatur verbrannt werden soll, den hohen Temperaturen ausgesetzt. Bei Kessel-, tlberhitzer- o. dgl. Feuerungen, vornehmlich solchen, die Kohlenstaub, flüssige oder gasförmige Brennstoffe verwenden, gestattet das Verfahren, die Wände des Verbrennungsraumes vor zu großer Überhitzung zu bewahren, indem man die zurückgeführten kälteren Rauchgase an den Wänden in flachem Strahl vorheistreichen läßt und auch die Wirkung der Strahlung durch die geringe Durchsichtigkeit der Rauchgase mildert. Durch Beimischung von Rauch erzeugenden Mitteln ließe sicli die Undurchsichtigkeit dieses Schutzmantels noch weiter vermehren.It becomes more economical due to the mixture with its own exhaust gases Protection of the pipe walls is brought about, but the walls of the combustion chamber remain, in which, for reasons of economy, the fuel with a small excess of air, d. H. to be burned at a very high temperature, exposed to the high temperatures. In the case of boiler, superheater or similar furnaces, especially those that use coal dust, Using liquid or gaseous fuels, the method allows the walls to protect the combustion chamber from excessive overheating by removing the returned cooler flue gases on the walls in a flat jet and also the effect of the radiation is mitigated by the low transparency of the smoke gases. The addition of smoke-producing agents would leave the opacity multiply this protective sheath even further.
In der Zeichnung sind zwei Anwendungsbeispiele gezeigt. Abb. i zeigt einen normalen Dampfkessel mit schräg liegenden Siederohren und ölfeuerung. Durch Düsea wird der Brennstoff eingespritzt, er mischt sich in, b mit der erforderlichen Verbrennungsluft und verbrennt. Durch die Schlitze c wird Abgas in einem flachen oder fächerförmigen Strahl eingeführt, der die Verbrennungshitze oder Flamme von der Umgebung abhält. Das Abgas wird am Fuchs bei d durch den Ventilator .e abgesaugt. Abb. z betrifft eine Kohlenstaubfeuerung in der Anordnung, wie sie vom Beddington-Kessel her bekannt ist. Durch das mittlere Rohr a wird Kohlenstaub zugeführt, durch das dieses umgebende Rohr b Verbrennungsluft. Die hierauf entstehende Flamme ist allseitig von durch Rohr c zugeführten Rauchgasen umgeben, welche die nächstliegenden Rohre von der intensivsten Bestrahlung schützen. Im weiteren Verlaufe mischen sich die Abgase mit den Verbrennungsprodukten des frischen Gemisches, wodurch die Feuergastemp;eratur auf ein für die Rohre zulässiges Maß herabgedrückt wird.Two application examples are shown in the drawing. Fig.i shows a normal steam boiler with inclined boiler pipes and oil firing. By Nozzle a the fuel is injected, it mixes in, b with the required Combustion air and burns. Through the slots c, exhaust gas is in a flat or fan-shaped beam introduced, which the combustion heat or flame of the environment. The exhaust gas is sucked off at the fox at d by the fan .e. Fig. Z relates to a pulverized coal furnace in the arrangement as that of the Beddington boiler is known ago. Coal dust is fed through the middle pipe a, through which this surrounding pipe b combustion air. The resulting flame is on all sides surrounded by flue gases supplied through pipe c, which are the closest pipes protect from the most intense radiation. In the further course they mix Flue gases with the combustion products of the fresh mixture, which increases the temperature of the flue gas is pressed down to a level that is permissible for the pipes.
An Stelle der Ölfeuerung könnte natürlich auch eine gewöhnliche Rostfeuerung treten, wie überhaupt das Verfahren nicht auf Düsenfeuerurigen beschränkt ist, sondern bei jeder Feuergasart Verwendung finden kann.Instead of the oil firing, an ordinary grate firing could of course also be used occur, as the process is not limited to jet firing, but rather can be used with any type of fire gas.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH451926X | 1921-07-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE451926C true DE451926C (en) | 1927-10-29 |
Family
ID=4515503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA35965D Expired DE451926C (en) | 1921-07-21 | 1921-07-30 | Process and device for the operation of furnaces for steam boilers and superheaters |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE451926C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE757650C (en) * | 1938-02-08 | 1953-03-09 | Brown Ag | Metallic tube heat exchanger |
-
1921
- 1921-07-30 DE DEA35965D patent/DE451926C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE757650C (en) * | 1938-02-08 | 1953-03-09 | Brown Ag | Metallic tube heat exchanger |
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