DE562431C - Arrangement to prevent the air heater from being destroyed by flue gases that have cooled below their dew point when water and air preheaters are connected in series - Google Patents

Arrangement to prevent the air heater from being destroyed by flue gases that have cooled below their dew point when water and air preheaters are connected in series

Info

Publication number
DE562431C
DE562431C DENDAT562431D DE562431DD DE562431C DE 562431 C DE562431 C DE 562431C DE NDAT562431 D DENDAT562431 D DE NDAT562431D DE 562431D D DE562431D D DE 562431DD DE 562431 C DE562431 C DE 562431C
Authority
DE
Germany
Prior art keywords
air
preheater
water
flue gases
arrangement
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
DENDAT562431D
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.)
ELEKTROWERKE AG
Original Assignee
ELEKTROWERKE AG
Publication date
Application granted granted Critical
Publication of DE562431C publication Critical patent/DE562431C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)

Description

Anordnung zur Verhinderung von Zerstörungen des Lufterhitzers durch unter ihren Taupunkt abgekühlte Rauchgase bei hintereinandexgeschalteten Wasser- und Luftvorwärmern Bei Kesselanlagen mit hintereinandergeschalteten Wasser- und Luftvorwärmern besteht, besonders bei Verwendung stark wasserhaltiger Brennstoffe für die Feuerung, die Gefahr, daß bei verringerter Kesselleistung die Rauchgase an demjenigen Teil des Luftvorwärmers, an dem die Frischluft in diesen eintritt, unter ihren Taupunkt abgekühlt werden und infolgedessen Zerstörungen des Luftvorwärmers herbeiführen. Die Erfindung bezweckt, diese Gefahr zu beseitigen.Arrangement to prevent damage to the air heater flue gases cooled below their dew point with water and air preheaters For boiler systems with water and Air preheaters exist, especially when using fuels with a high water content for the firing, the risk of the flue gases being released when the boiler output is reduced on that part of the air preheater where the fresh air enters it, be cooled below their dew point and consequently destruction of the air preheater bring about. The invention aims to eliminate this risk.

Erfindungsgemäß ist deshalb in demjenigen Teil des Wasservorwärmers, der von den die Frischlufteintrittsstelle des nachgeschalteten Luftvorwärmers beaufschlagenden Rauchgasen durchströmt wird, durch Fortlassen von Vorwärmerrohren ein größerer, freier Strömungsquerschnitt für den ungehinderten Durchgang der heißen Rauchgase vorgesehen. An dieser Stelle treten also die Rauchgase, da sie keine Kühlfläche berühren, in größerer Menge mit annähernd derselben Temperatur in die Heizkanäle des Luftvorwärmers ein, mit der sie den Kessel verlassen haben, wodurch vermieden wird, daß sie im Luftvorwärnier auf den Taupunkt abgekühlt werden. Wenn man die erste nach der Heizraumwand zu liegende Reihe der Wasservorwärmerrohre stehen läßt, hat man dabei den Vorteil eines wirksamen Wärmeschutzes nach dem Kesselhaus zu.According to the invention is therefore in that part of the water preheater, the one acting on the fresh air inlet point of the downstream air preheater Flue gases are flowed through, by omitting preheater pipes a larger, Free flow cross-section for the unhindered passage of the hot flue gases intended. This is where the flue gases come in because they have no cooling surface touch, in larger quantities with approximately the same temperature in the heating channels of the air preheater with which you left the boiler, thus avoiding that they are cooled to the dew point in the air preheater. If you have the leaves the first row of water preheater pipes after the boiler room wall, one has the advantage of effective thermal protection after the boiler house.

In der Zeichnung ist schematisch ein Ausführungsbeispiel der Erfindung veranschaulicht.An exemplary embodiment of the invention is shown schematically in the drawing illustrated.

a ist der Wasservorwärmer, b der Luftvorwärmer. Durch einen Verdichter c wird dem Luftvorwärmer b auf der in der Zeichnung rechten Seite Kaltluft zugeführt, die den Luftvorwärmer b auf der linken Seite als Heißluft verläßt, da der Luftvorwärmer durch dieselben von unten kommenden Rauchgase beheizt wird, die unmittelbar vorher den Wasservorwärmer a in Richtung der Pfeile durchströmt haben.a is the water preheater, b is the air preheater. By a compressor c cold air is fed to the air preheater b on the right-hand side in the drawing, which leaves the air preheater b on the left as hot air, as the air preheater is heated by the same flue gases coming from below that immediately before have flowed through the water preheater a in the direction of the arrows.

Um ein Abkühlen der Rauchgase im Luftvorwärmer b auf den Taupunkt zu vermeiden, ist in dem dargestellten Ausführungsbeispiel eine Vorwärmerrohrreihe fortgelassen, so daß an dieser Stelle bei d ein freier Strömungsquerschnitt für den ungehinderten Durchgang der heißen Rauchgase geschaffen wird. Um diesen verbreiterten Durchgangskanal d in dem Wasservorwärmer d nach der Heizraumwand zu schützen, wird die in der Zeichnung rechte Seite des Durchgangskanals d durch eine Reihe von Vorwärmerrohren begrenzt.To cool the flue gases in the air preheater b to the dew point In the illustrated embodiment, a row of preheater tubes is to be avoided omitted, so that at this point at d a free flow cross-section for the unhindered passage of the hot smoke gases is created. Widened around this To protect the passage channel d in the water preheater d after the boiler room wall the right-hand side of the passage d in the drawing through a series of preheater pipes limited.

Claims (1)

PATENTANSPRÜCHE: i. Anordnung zur Verhinderung von Zerstörungen des Lufterhitzers durch unter ihren Taupunkt abgekühlte Rauchgase bei im Rauchgasweg hintereinandergeschalteten Wasser- und Luftvorwärmern, dadurch gekennzeichnet, daß in demjenigen Teil des Wasservorwärmers (a), der von .den die Frischlufteintrittsstelle des nachgeschalteten Luftvorwärmers (b) beaufschlagenden Rauchgasen durchströmt wird, durch Fortlassen von Vorwärmerrohren ein größerer freier Strömungsquerschnitt (d) für den ungehinderten Durchgang der heißen Rauchgase vorgesehen ist. a. Anordnung nach Anspruch i, dadurch gekennzeichnet, daß der verbreiterte Durchgangskanal (d) in dem Wasservorwärmer (a) nach der Heizraumwand zu durch eine diese schützende Reihe von Vorwärmerrohren begrenzt ist.PATENT CLAIMS: i. Arrangement to prevent destruction of the Air heater by flue gases cooled below their dew point in the flue gas path water and air preheaters connected in series, characterized in that in that part of the water preheater (a), which from .den the fresh air inlet point the downstream air preheater (b) flows through the acting flue gases becomes a larger free flow cross-section by omitting preheater pipes (d) is provided for the unhindered passage of the hot smoke gases. a. arrangement according to claim i, characterized in that the widened through channel (d) in the water preheater (a) towards the boiler room wall through a protective wall Number of preheater pipes is limited.
DENDAT562431D Arrangement to prevent the air heater from being destroyed by flue gases that have cooled below their dew point when water and air preheaters are connected in series Expired DE562431C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE562431T

Publications (1)

Publication Number Publication Date
DE562431C true DE562431C (en) 1932-10-26

Family

ID=6566492

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT562431D Expired DE562431C (en) Arrangement to prevent the air heater from being destroyed by flue gases that have cooled below their dew point when water and air preheaters are connected in series

Country Status (1)

Country Link
DE (1) DE562431C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE886801C (en) * 1949-03-11 1953-08-17 Babcock & Wilcox Dampfkessel W Process for the preparation of fuel dust

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE886801C (en) * 1949-03-11 1953-08-17 Babcock & Wilcox Dampfkessel W Process for the preparation of fuel dust

Similar Documents

Publication Publication Date Title
DE19533987A1 (en) Furnace exhaust gas heat recovery process
DE562431C (en) Arrangement to prevent the air heater from being destroyed by flue gases that have cooled below their dew point when water and air preheaters are connected in series
DE3044691A1 (en) AIR CONDITIONING DEVICE FOR INDIVIDUAL ROOMS AND THE LIKE WITH A HEATING DEVICE
DE406319C (en) Air heater
DE4222550C1 (en) Device for heating and killing of Legionella bacteria in water supplies - by preheating water using brine circuit, and then heating directly by combustion exhaust gas in multistage heat exchanger
DE727141C (en) Superheater for steam generator
DE504237C (en) Dry coke cooling system
DE2519899A1 (en) Heating Cowper stoves on blast furnaces - where gas and air is preheated in recuperator fed with re-heated flue gas
DE922487C (en) Air heater with heat exchangers charged with combustion gases
DE429378C (en) Waste heat system with coke extinguisher
DE202017104879U1 (en) Heating system with jet lines
DE610243C (en) Corrosion-proof arrangement for cross-flow heat exchangers
DE391199C (en) Device for regulating the degree of heat of the combustion exhaust gases used for the direct heating of fuel drying systems
JPS5936197B2 (en) Multi-passage anti-corrosion air heating device
DE556723C (en) Process for achieving more uniform heating of tunnel ovens
AT202956B (en) Method and device for indirect heating of malt kiln
DE2236869C3 (en) Blast furnace heater
DE297582C (en)
CH241757A (en) Heat exchanger unit.
DE711295C (en) Device to protect the superheater against burning in marine water tube boilers with oil or underwind firing
DE655292C (en) Air heater for space heating, especially of rail vehicles
AT107911B (en) Steam superheater with its own combustion.
AT213022B (en) Combined boiler for the central generation of warm air and hot water
DE726802C (en) Melting furnace system with pre-firing and waste heat recovery
DE468734C (en) Device for regulating the hot air temperatures in plate air heaters working with cross-flow