DE458032C - Radiant superheater with temperature control through additional air in a surface heat exchanger - Google Patents
Radiant superheater with temperature control through additional air in a surface heat exchangerInfo
- Publication number
- DE458032C DE458032C DES78242D DES0078242D DE458032C DE 458032 C DE458032 C DE 458032C DE S78242 D DES78242 D DE S78242D DE S0078242 D DES0078242 D DE S0078242D DE 458032 C DE458032 C DE 458032C
- Authority
- DE
- Germany
- Prior art keywords
- superheater
- additional air
- heat exchanger
- temperature control
- surface heat
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/06—Steam superheating characterised by heating method with heat supply predominantly by radiation
Description
Strahlungsüberhitzer mit Temperaturregelung durch Zusatzluft in einem Oberflächenwärmeaustauscher. Es ist bekannt, die Regelung der Temperatur von überhitztem Dampf durch Rückkühlung mittels Luft in besonderen Wärmeaustauschvorrichtungen vorzunehmen.Radiant superheater with temperature control through additional air in one Surface heat exchanger. It is known to regulate the temperature of overheated Make steam by recooling with air in special heat exchange devices.
Diese Anordnung hat den Nachteil, daß sich neben einem erhöhten Materialaufwand für die Austauschvorrichtung ein erhöhter Platzbedarf ergibt, wobei durch die notwendig werdende Aufstellung außerhalb des eigentlichen Dampferzeugers stets Wärmeverluste auftreten.This arrangement has the disadvantage that in addition to an increased cost of materials for the exchange device results in an increased space requirement, with the necessary installation outside of the actual steam generator, there is always heat loss appear.
Bei Verwendung von Strahlungsüberhitzern ist dabei mangels unmittelbarer Kühlung des Überhitzers selbst das Durchbrennen der Überhitzerrohre infolge unzulässig hoher Einstrahlung zu befürchten.If radiation superheaters are used, this is more direct due to the lack of them Cooling of the superheater itself, as a result of the superheater tubes being burnt through, impermissible high irradiation is to be feared.
Die Erfindung zeigt einen Weg, um diese Nachteile insbesondere bei Verwendung eines Strahlungsüberhitzers in Verbindung mit einer Kohlenstaübfeuerung zu beseitigen.The invention shows a way of overcoming these disadvantages in particular Use of a radiant superheater in conjunction with pulverized coal firing to eliminate.
Sie besteht in der Anordnung des Strahlungsüberhitzers im Kanal für die Zusatzluft bzw. vor den Austrittsöffnungen der Zusatzluft in die Brennkammer.It consists in the arrangement of the radiation superheater in the duct for the additional air or in front of the outlet openings for the additional air into the combustion chamber.
Durch veränderliche Einstellung der Luftzufuhr mittels einer Regelvorrichtung kann die Dampftemperatur bereits im Überhitzer selbst beliebig geregelt werden, wobei sich durch unmittelbares Bestreichen der Überhitzerrohre mit Zusatzluft beste Kühlungsmöglichkeit und damit Schutz des Überhitzers vor unzulässig hoher Strahlungswärme ergeben. Durch den unmittelbaren Austritt der durch Überhitzungswärme weiter vorgewärmten Zusatzluft in die Brennkammer werden außerdem Wärmeverluste vollkommen vermieden.By changing the setting of the air supply by means of a control device the steam temperature can already be controlled as required in the superheater itself, which is best achieved by directly brushing the superheater tubes with additional air Cooling option and thus protection of the superheater from impermissibly high radiant heat result. Due to the immediate exit of the further preheated by overheating Additional air in the combustion chamber is also completely avoided.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung an einem kohlenstaubbefeuerten Steilrohrkessel veranschaulicht.In the drawing, an embodiment of the invention is on one Coal dust-fired vertical tube boiler illustrated.
Abb. i zeigt die Anordnung des Strahlungsüberhitzers mit Zusatzluftzuführung und Regelvorrichtung mittels gesteuerter Klappen.Fig. I shows the arrangement of the radiant superheater with additional air supply and control device by means of controlled flaps.
Abb. 2 stellt einen Ausschnitt aus dem Kesselmauerwerk mit eingebautem Überhitzer in Ansicht und Längsschnitt dar. Die von der Brennkammer a ausgestrahlte Wärme (Abb. 2) trifft die Überhitzerrohre b durch die im Mauerwerk c angebrachten Löcher d. Die zur Kühlung der Ü'oerhitzerrohre b dienende Zusatzluft der Kohlenstaubfeuerung wird aus der Luftkammer e durch die von Klappen f gesteuerten Löcher g in der Kesselwand h zum Überhitzer b geführt. Nach Bestreichen der Überhitzerrohre b tritt die Zusatzluft durch die Löcher d in die Brennkammer a ein.Fig. 2 shows a section of the boiler wall with built-in Superheater in view and longitudinal section. The radiated from the combustion chamber a Heat (Fig. 2) hits the superheater pipes b through the ones in the masonry c Holes d. The additional air of the pulverized coal furnace used to cool the overheater tubes b is released from the air chamber e through the holes g in the boiler wall controlled by flaps f h led to superheater b. After the superheater tubes b have been coated, the additional air comes out through the holes d into the combustion chamber a.
Die Klappen f können sowohl von Hand als auch selbsttätig bewegt werden.The flaps f can be moved both by hand and automatically.
Die Lufteintrittslöcher g werden zweckmäßig gegen die Austrittslöcher d versetzt, um das Bestreichen sämtlicher Überhitzerrohre mit Luft zu ermöglichen. Jedoch kann der Strahlungsüberhitzer auch ohne Schutzwand c gegen die Brennkammer a offen eingebaut sein, so daß die Zusatzluft nach Durchstreichen der Überhitzerrohre b unmittelbar in die Brennkammer a eintritt.The air inlet holes g are expediently against the outlet holes d offset to allow all superheater tubes to be brushed with air. However, the radiation superheater can also be used without a protective wall c against the combustion chamber a be installed in an open manner, so that the additional air can be drawn through the superheater tubes b directly enters the combustion chamber a.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES78242D DE458032C (en) | Radiant superheater with temperature control through additional air in a surface heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES78242D DE458032C (en) | Radiant superheater with temperature control through additional air in a surface heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE458032C true DE458032C (en) | 1928-03-28 |
Family
ID=7507329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES78242D Expired DE458032C (en) | Radiant superheater with temperature control through additional air in a surface heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE458032C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0981015A1 (en) | 1998-08-20 | 2000-02-23 | Asea Brown Boveri AG | Superheated steam generator for combustion plants with corrosive gases |
| US6244195B1 (en) * | 2000-05-23 | 2001-06-12 | Dae Youn Yang | Safety incinerator for rubbish in volume and flammable waste |
-
0
- DE DES78242D patent/DE458032C/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0981015A1 (en) | 1998-08-20 | 2000-02-23 | Asea Brown Boveri AG | Superheated steam generator for combustion plants with corrosive gases |
| US6269754B1 (en) | 1998-08-20 | 2001-08-07 | Asea Brown Boveri Ag | Steam generator for superheated steam for incineration plants with corrosive flue gases |
| US6244195B1 (en) * | 2000-05-23 | 2001-06-12 | Dae Youn Yang | Safety incinerator for rubbish in volume and flammable waste |
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