Nothing Special   »   [go: up one dir, main page]

EP2960579A1 - Side wall cooling in combustion chambers for preventing slag encrusting on the peripheral area and in the boiler area - Google Patents

Side wall cooling in combustion chambers for preventing slag encrusting on the peripheral area and in the boiler area Download PDF

Info

Publication number
EP2960579A1
EP2960579A1 EP14002476.1A EP14002476A EP2960579A1 EP 2960579 A1 EP2960579 A1 EP 2960579A1 EP 14002476 A EP14002476 A EP 14002476A EP 2960579 A1 EP2960579 A1 EP 2960579A1
Authority
EP
European Patent Office
Prior art keywords
side wall
cooling medium
cooling
elements
area
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.)
Withdrawn
Application number
EP14002476.1A
Other languages
German (de)
French (fr)
Inventor
Norbert Langen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2960579A1 publication Critical patent/EP2960579A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
    • 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
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05001—Preventing corrosion by using special lining materials or other techniques

Definitions

  • the invention relates to a method and its technical implementation for the cooling of side walls in fire chambers, which excludes the Venturi Bonus by counterpressure when flowing through the side wall with air. This ensures that no particles are sucked from the combustion chamber by the cooling air mass flow, which caking on the side wall and ensures uniform cooling over the entire length of the side wall.
  • a cooling medium 1 is guided on one side in the side wall 2 and flows through it.
  • the cooling medium absorbs heat from the sidewalls according to the principle of forced convection and heat radiation and cools them.
  • air serves as a cooling medium. Due to the negative pressure in the edge region of the outflow openings 3, which is caused by the flowing coolant, particles 4 are sucked from the furnace into the supply air duct and deposited there and set in the episode almost the entire side wall and the air supply lines or accumulate in front of this on and cake in the form of slag.
  • the cooling medium flows in opposite directions in a storage chamber.
  • a back pressure is generated which prevents particles from being sucked in by the negative pressure which is caused by the increased velocity of the flowing coolant.
  • FIG. 2 can be seen how the coolant 1 is divided into the supply line 2 and flows through any desired deflections against each other. This results in a stagnation point 3 in the storage chamber 4.
  • the entire side wall can be supplied by an aggregate with the cooling medium.
  • cooling medium 1 is passed in the present invention from the stagnation chamber into controllable outlet 2, which open into segmented side wall elements, which in Figure 4 be further discussed.
  • the Figure 4 shows the side wall element 1 with the cover elements 2 of the side wall element 1 shown as an example. Also recognizable in the side wall element 1 exemplarily integrated storage chamber 3 in the form of a tube. In the Figure 3 explained outlet openings are here in Figure 4 also integrated in the stowage chamber. The sliding elements 4 can be pushed over the outlet opening 5 as needed to adjust the individual need for cooling medium of the side wall element.
  • cover elements 2 used by way of example are slotted, which results in Figure 5 should be discussed further.
  • Figure 5 shows a cover with a matched to the side wall element recess 2. These recesses result in mounting the cover a slot from which the cooling medium can escape into the firing chamber.
  • the side wall element together with cover elements we thus reliably and permanently cooled.
  • the cooling medium emerging at this point into the firing chamber also causes combustion of incompletely burned gases and thus an improvement in the exhaust gas values of the firing plant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

Die Erfindung betrifft ein Verfahren und dessen technische Umsetzung zur Kühlung von Seitenwänden in Feuerräumen, welches durch Gegendruck die Venturiwirkung beim Durchströmen der Seitenwand mit Luft ausschließt. Somit wird sichergestellt, dass durch den Kühlluftmassenstrom keine Partikel aus dem Feuerraum angesaugt werden, welche an der Seitenwand anbacken und eine gleichmäßige Kühlung über die gesamte Länge der Seitenwand sicherstellt.The invention relates to a method and its technical implementation for the cooling of side walls in fire chambers, which excludes the Venturiwirkung by counterpressure when flowing through the side wall with air. This ensures that no particles are sucked from the combustion chamber by the cooling air mass flow, which caking on the side wall and ensures uniform cooling over the entire length of the side wall.

Description

Die Erfindung betrifft ein Verfahren und dessen technische Umsetzung zur Kühlung von Seitenwänden in Feuerräumen, welches durch Gegendruck die Venturiwirkung beim Durchströmen der Seitenwand mit Luft ausschließt. Somit wird sichergestellt, dass durch den Kühlluftmassenstrom keine Partikel aus dem Feuerraum angesaugt werden, welche an der Seitenwand anbacken und eine gleichmäßige Kühlung über die gesamte Länge der Seitenwand sicherstellt.The invention relates to a method and its technical implementation for the cooling of side walls in fire chambers, which excludes the Venturiwirkung by counterpressure when flowing through the side wall with air. This ensures that no particles are sucked from the combustion chamber by the cooling air mass flow, which caking on the side wall and ensures uniform cooling over the entire length of the side wall.

Stand der TechnikState of the art

Bei bekannten Seitenwandkühlungen von Feuerräumen wird ein Kühlmedium 1 einseitig in die Seitenwand 2 geleitet und durchströmt diese. Das Kühlmedium nimmt nach dem Prinzip der erzwungenen Konvektion und Wärmestrahlung Wärme von den Seitenwänden auf und kühlt diese. Durch das Entlangströmen des Kühlmediums 1 an der Seitenwand wird dieses somit kontinuierlich aufgewärmt und kann somit die Wärme nicht homogen aus dem Material abführen. In der Regel dient Luft als Kühlmedium.
Durch den Unterdruck im Randbereich der Ausströmöffnungen 3, welcher durch das strömende Kühlmittel verursacht wird, werden Partikel 4 aus dem Feuerraum in den Zuluftkanal gesogen und lagern sich dort ab und setzen in der Folge nahezu die gesamte Seitenwand und die Zuluftleitungen zu oder stauen sich vor diesem auf und backen in Form von Schlacke an.In known side wall cooling of fire chambers, a cooling medium 1 is guided on one side in the side wall 2 and flows through it. The cooling medium absorbs heat from the sidewalls according to the principle of forced convection and heat radiation and cools them. As a result of the flowing along of the cooling medium 1 on the side wall, it is thus heated up continuously and thus can not dissipate the heat homogeneously from the material. As a rule, air serves as a cooling medium.
Due to the negative pressure in the edge region of the outflow openings 3, which is caused by the flowing coolant, particles 4 are sucked from the furnace into the supply air duct and deposited there and set in the episode almost the entire side wall and the air supply lines or accumulate in front of this on and cake in the form of slag.

Vorteile der Seitenwandkühlung in Feuerräumen zur Vermeidung von Schlackeanbackungen im RandbereichAdvantages of sidewall cooling in combustion chambers to prevent slag caking in the edge area

Durch das nachstehende Verfahren wird ein Ansaugen von Partikeln aus dem Feuerraum vermieden und eine homogene Kühlung der Seitenwände des Feuerraumes gewährleistet. Kühlkammer bzw. Seitenwand sind frei von Ablagerungen.
Dies sichert eine längere Lebensdauer der Bauteile und erhöht somit die Wirtschaftlichkeit der Anlage.By the following method, a suction of particles from the combustion chamber is avoided and ensures a homogeneous cooling of the side walls of the furnace. Cooling chamber or side wall are free of deposits.
This ensures a longer life of the components and thus increases the efficiency of the system.

Vorliegende ErfindungPresent invention

Bei dem vorliegenden Verfahren strömt das Kühlmedium gegenläufig in eine Staukammer. Hierdurch wird ein Gegendruck erzeugt der verhindert, dass Partikel durch den Unterdruck, welcher durch die erhöhte Geschwindigkeit des strömenden Kühlmittels verursacht wird, angesaugt werden. Die folgenden Abbildungen erläutert dieses Verfahren am Beispiel eines Vorschubrostes.In the present method, the cooling medium flows in opposite directions in a storage chamber. As a result, a back pressure is generated which prevents particles from being sucked in by the negative pressure which is caused by the increased velocity of the flowing coolant. The following figures explain this procedure using the example of a feed grate.

Abbildung 2 ist zu entnehmen, wie das Kühlmittel 1 nach der Zuleitung 2 aufgeteilt wird und durch beliebig gestaltete Umlenkungen gegeneinander strömt. Somit ergibt sich ein Staupunkt 3 in der Staukammer 4. Durch die hier gezeigte Anordnung kann die gesamte Seitenwand durch ein Aggregat mit dem Kühlmedium versorgt werden. Figure 2 can be seen how the coolant 1 is divided into the supply line 2 and flows through any desired deflections against each other. This results in a stagnation point 3 in the storage chamber 4. By the arrangement shown here, the entire side wall can be supplied by an aggregate with the cooling medium.

Wie in Abbildung 3 zu sehen ist, wird das Kühlmedium 1 bei der vorliegenden Erfindung aus der Staukammer in kontrollierbare Auslassöffnungen 2 geleitet, die in segmentierten Seitenwandelemente münden, die in Abbildung 4 weiter erörtert werden.As in Figure 3 can be seen, the cooling medium 1 is passed in the present invention from the stagnation chamber into controllable outlet 2, which open into segmented side wall elements, which in Figure 4 be further discussed.

Die Abbildung 4 zeigt das Seitenwandelement 1 mit den exemplarisch dargestellten Abdeckelemente 2 des Seitenwandelements 1. Ebenfalls erkennbar die im Seitenwandelement 1 exemplarisch integrierte Staukammer 3 in Form eines Rohres. Die in Abbildung 3 erläuterten Auslassöffnungen sind hier in Abbildung 4 ebenfalls in die Staukammer integriert. Die Schiebeelemente 4 können je nach Bedarf über die Auslassöffnung 5 geschoben werden, um den individuellen Bedarf an Kühlmedium des Seitenwandelements einstellen zu können.The Figure 4 shows the side wall element 1 with the cover elements 2 of the side wall element 1 shown as an example. Also recognizable in the side wall element 1 exemplarily integrated storage chamber 3 in the form of a tube. In the Figure 3 explained outlet openings are here in Figure 4 also integrated in the stowage chamber. The sliding elements 4 can be pushed over the outlet opening 5 as needed to adjust the individual need for cooling medium of the side wall element.

Um die Wärme bestmöglich aus den Seitenwänden 1 abzuführen und gleichzeitig zu gewährleisten, dass ausströmendes Kühlmittel Partikel von der Seitenwandelement fortträgt, sind die exemplarisch verwendeten Abdeckelemente 2 geschlitzt, was in Abbildung 5 weiter erörtert werden soll.In order to dissipate the heat as best as possible from the side walls 1 and at the same time to ensure that escaping coolant carries away particles from the side wall element, the cover elements 2 used by way of example are slotted, which results in Figure 5 should be discussed further.

Abbildung 5 zeigt ein Abdeckelement mit einer auf das Seitenwandelement abgestimmten Vertiefung 2. Diese Vertiefungen ergeben bei Montage der Abdeckelemente einen Schlitz, aus denen das Kühlmedium in den Feuerungsraum austreten kann. Das Seitenwandelement nebst Abdeckelementen wir somit zuverlässig und permanent gekühlt. Figure 5 shows a cover with a matched to the side wall element recess 2. These recesses result in mounting the cover a slot from which the cooling medium can escape into the firing chamber. The side wall element together with cover elements we thus reliably and permanently cooled.

Das an dieser Stelle in den Feuerungsraum austretende Kühlmedium bewirkt ebenfalls eine Verbrennung unvollständig verbrannter Gase und somit eine Verbesserung der Abgaswerte der Feuerungsanlage.The cooling medium emerging at this point into the firing chamber also causes combustion of incompletely burned gases and thus an improvement in the exhaust gas values of the firing plant.

Claims (7)

Gegenläufige Zuführung des Kühlmediums in eine Staukammer zur Verteilung des Kühlmediums (Gleicher Druck). Ausschluss der Venturiewirkung.Opposite feeding of the cooling medium into a stowage chamber for distribution of the cooling medium (equal pressure). Exclusion of the Venturi effect. Einstellbare Zuführung des Kühlmediums aus der Staukammer in die Seitenwandelemente unmittelbar vor Eintritt des Kühlmediums in das SeitenwandelementAdjustable supply of the cooling medium from the storage chamber into the side wall elements immediately before the cooling medium enters the side wall element Verbesserung der Abgaswerte durch eine Seitenwandkühlung der geschilderten BauartImprovement of exhaust emissions by sidewall cooling of the described type Abdeckelemente der Seitenwandelemente mit Vertiefungen zur Abstimmung des Bedarfs an KühlmediumCover elements of the side wall elements with recesses for matching the need for cooling medium Individuelle Zuführung eines Kühlmediums in ein SeitenwandelementIndividual feeding of a cooling medium into a side wall element Vertikale Anordnung der Seitenwandelemente zur Bildung einer Seitenwand gespeist aus einer oder mehrerer Staukammern zur Kühlmitteleinspeisung der SeitenwandelementeVertical arrangement of the sidewall elements to form a side wall fed from one or more storage chambers for coolant supply of the sidewall elements Gegenläufige Zuführung des Kühlmittels in eine Staukammer sofort mit je einem Lüfter links und rechts (Gleicher Druck). Ausschluss der Venturiewirkung.Opposite supply of coolant in a storage chamber immediately with one fan left and right (same pressure). Exclusion of the Venturi effect.
EP14002476.1A 2014-06-24 2014-07-17 Side wall cooling in combustion chambers for preventing slag encrusting on the peripheral area and in the boiler area Withdrawn EP2960579A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014009047.7A DE102014009047A1 (en) 2014-06-24 2014-06-24 Side wall cleaning for combustion and combustion plants

Publications (1)

Publication Number Publication Date
EP2960579A1 true EP2960579A1 (en) 2015-12-30

Family

ID=51225234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14002476.1A Withdrawn EP2960579A1 (en) 2014-06-24 2014-07-17 Side wall cooling in combustion chambers for preventing slag encrusting on the peripheral area and in the boiler area

Country Status (2)

Country Link
EP (1) EP2960579A1 (en)
DE (1) DE102014009047A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3230379A1 (en) * 1982-05-10 1983-11-10 Widmer & Ernst AG, 5430 Wettingen Process and apparatus for the combustion of materials in a combustion chamber
EP0166133A1 (en) * 1984-05-18 1986-01-02 KOCH, Theodor Interior boiler combustion chamber wall
DE19816059A1 (en) * 1998-04-09 1999-10-14 Juenger & Graeter Gmbh Feuerfe Tubular wall of combustion furnace with pipes joined by ribs
CH699406A2 (en) * 2008-08-26 2010-02-26 Mokesys Ag Ventilated refractory wall, in particular for an incinerator.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3230379A1 (en) * 1982-05-10 1983-11-10 Widmer & Ernst AG, 5430 Wettingen Process and apparatus for the combustion of materials in a combustion chamber
EP0166133A1 (en) * 1984-05-18 1986-01-02 KOCH, Theodor Interior boiler combustion chamber wall
DE19816059A1 (en) * 1998-04-09 1999-10-14 Juenger & Graeter Gmbh Feuerfe Tubular wall of combustion furnace with pipes joined by ribs
CH699406A2 (en) * 2008-08-26 2010-02-26 Mokesys Ag Ventilated refractory wall, in particular for an incinerator.

Also Published As

Publication number Publication date
DE102014009047A1 (en) 2015-12-24

Similar Documents

Publication Publication Date Title
DE2542765C2 (en) Infrared radiation suppression device for an aircraft gas turbine engine
EP2257751B1 (en) Dryer for material to be dried
DE102011119436A1 (en) Device for tempering objects
CH702557A2 (en) A tunable transition piece rear frame.
DE2003530A1 (en) Forced convection oven
CH707842A2 (en) A method and apparatus for improving the heat transfer in the turbine sections of gas turbines.
EP2273095A1 (en) Heat exchanger, exhaust gas recirculation system and internal combustion engine
DE102009045801A1 (en) Device for cooling an exhaust gas flow
DE102015113146A1 (en) Systems and devices related to gas turbine combustors
EP2960579A1 (en) Side wall cooling in combustion chambers for preventing slag encrusting on the peripheral area and in the boiler area
DE202014005065U1 (en) Sidewall cooling for combustion and combustion plants
DE202014105531U1 (en) Ventilation system and delivery unit for it
DE102015113418A1 (en) Combustor cap assembly
DE1136675B (en) Method and device for performing endothermic processes on the sintering belt
CH706944A2 (en) Uniform circumferential distribution of a fluid in a manifold.
DE112017000372T5 (en) SYSTEM AND METHOD FOR INFLUENCING THE TEMPERATING AIR FOR HOT SCR CATALYSTS
DE2504436A1 (en) METHOD AND DEVICE FOR TAKING GAS IN THERMAL SYSTEMS
DE102015014514B4 (en) "Common-Rail" water jacket
DE955213C (en) Method and device for sealing the inlet and / or outlet end of rotary furnaces, rotary drums, drying drums and the like. like
DE102016113555B4 (en) Exhaust system for an internal combustion engine
CH708443A2 (en) Air fault system for one panel.
DE102014219078A1 (en) Device for supplying a coolant to a heat exchanger, preferably for an exhaust gas cooler of an internal combustion engine of a motor vehicle
DE102011105623B4 (en) Device for heating a ferromagnetic extrusion cylinder
DE102013201196B4 (en) Safe operation of a particulate filter
DE647788C (en) Vertical chamber furnace for the production of gas and coke

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20160701