DE919064C - Shaft furnace grate - Google Patents

Shaft furnace grate

Info

Publication number
DE919064C
DE919064C DED14296A DED0014296A DE919064C DE 919064 C DE919064 C DE 919064C DE D14296 A DED14296 A DE D14296A DE D0014296 A DED0014296 A DE D0014296A DE 919064 C DE919064 C DE 919064C
Authority
DE
Germany
Prior art keywords
grate
shaft
shaft furnace
furnace grate
coke
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
DED14296A
Other languages
German (de)
Inventor
Dipl-Ing Immo Doderer
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.)
IMMO DODERER DIPL ING
Original Assignee
IMMO DODERER DIPL ING
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 IMMO DODERER DIPL ING filed Critical IMMO DODERER DIPL ING
Application granted granted Critical
Publication of DE919064C publication Critical patent/DE919064C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H13/00—Grates not covered by any of groups F23H1/00-F23H11/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23H—GRATES; CLEANING OR RAKING GRATES
    • F23H2700/00—Grates characterised by special features or applications
    • F23H2700/001—Grates specially adapted for steam boilers

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Description

Die Erfindung betrifft die Verteilung des Brennluftstromes über die Rostfläche von Schachtöfen.The invention relates to the distribution of the combustion air flow over the Grate surface of shaft furnaces.

Bei Schachtöfen, wie Kakszirnmeröfen, Warmwasserkesseln usw., berühren die äußeren Schichten der glühenden Kokssäule die von der Außenluft oder einem Wassermantel usw. gekühlten Wände des Schachtes und geben ihre Wärme an diese ab. Je weiter die Koksstücke von der Schachtwand entfernt sind, um so geringer ist ihre Wärmeabgabe, mit Ausnahme der obersten und untersten Schichten der Kokssäule, welche Wärme nach oben und unten ausstrahlen können.Touch in shaft ovens such as Kakszirnmeröfen, hot water boilers, etc. the outer layers of the glowing coke column from the outside air or a water jacket etc. cooled walls of the shaft and give off their heat to them. The further the Pieces of coke are removed from the shaft wall, the lower their heat emission, with the exception of the top and bottom layers of the coke column, which heat after can radiate up and down.

Da nun Koks ein schlechter Wärmeleiter ist, nimmt die Temperatur der Koksstücke in der Richtung gegen den Kern der Schachtfüllung zu. Im Kern wird oft die Aschenschmelztemperatur erreicht, was Verschlackung verursacht, während die Temperatur der äußersten, an der Wand liegenden Koksstücke unter dem Zündpunkt bleibt, also nur eine mangelhafte oder gar keine Verbrennung vor sich geht.Since coke is a poor conductor of heat, the temperature decreases Pieces of coke in the direction towards the core of the shaft filling. At the core is often reaches the ash melting temperature, which causes slagging while the The temperature of the outermost pieces of coke lying on the wall remains below the ignition point, so there is only an inadequate combustion or no combustion at all.

Diese Übelstände werden durch folgende Einrichtung abgestellt: Bei einem erfindungsgemäßen Rost nimmt das Verhältnis der freien Rostfläche zur gesamten Rostfläche in der Richtung von der Schachtwand zur Rostmitte ab, so daß der Kern des Schachtes am wenigsten und die äußersten Schichten der Brennstoffsäule am meisten Brennluft erhalten. Dadurch wird der Abbrand der äußeren Teile der Schachtfüllung intensiviert bzw. trotz Abkühlung durch die Wände aufrechterhalten und damit die Wärmeabgabe erhöht, während der Kern der Brennstoffsäule infolge .geringerer Luftzufuhr die Aschenschmelztemperatur nicht erreichen kann.These evils are remedied by the following facility: At a grate according to the invention takes the ratio of the free grate area to the total Grate surface in the direction from the shaft wall to the grate center, so that the core the shaft least and the outermost layers of the fuel column most Receive combustion air. This causes the outer parts of the manhole filling to burn up intensified or maintained despite cooling by the walls and thus the Heat dissipation increased, while the core of the fuel column as a result of lower air supply cannot reach the ash melting temperature.

. Die geschilderte Ausgestaltung des Rostes kann ebensogut bei Rüttelrosten, Kipprosten od. dgl. wie bei festen Planrosten erfolgen.. The described design of the grate can just as well be used for vibrating grates, Tilting gratings or the like are carried out as with fixed flat gratings.

Die Zeichnung zeigt am horizontalen Schnitt durch den Schacht das Schema eines solchen Rostes: Die freie Rostfläche ist bei r in der Nähe der wassergefüllten Wand 3 am größten und bei 2 in der Mitte des Schachtes am kleinsten.The drawing shows this on the horizontal section through the shaft Scheme of such a grate: The free grate area is near the water-filled area at r Wall 3 at its largest and at 2 in the middle of the shaft the smallest.

Claims (1)

PATENTANSPRUCH: Rost eines Schachtofens, dadurch gekennzeichnet, daß die Größe der freien Rostfläche in der Richtung von den Schachtwänden gegen den Mittelpunkt der Rostfläche zu abnimmt. Claim: grate of a shaft furnace, characterized in that the size of the free grate surface decreases in the direction from the shaft walls towards the center of the grate surface.
DED14296A 1952-02-07 1953-02-08 Shaft furnace grate Expired DE919064C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT919064X 1952-02-07

Publications (1)

Publication Number Publication Date
DE919064C true DE919064C (en) 1954-10-11

Family

ID=3683063

Family Applications (1)

Application Number Title Priority Date Filing Date
DED14296A Expired DE919064C (en) 1952-02-07 1953-02-08 Shaft furnace grate

Country Status (1)

Country Link
DE (1) DE919064C (en)

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