EP1321711A1 - Luftgekühlter Roststab für eine Schubrostfeuerung - Google Patents
Luftgekühlter Roststab für eine Schubrostfeuerung Download PDFInfo
- Publication number
- EP1321711A1 EP1321711A1 EP02028385A EP02028385A EP1321711A1 EP 1321711 A1 EP1321711 A1 EP 1321711A1 EP 02028385 A EP02028385 A EP 02028385A EP 02028385 A EP02028385 A EP 02028385A EP 1321711 A1 EP1321711 A1 EP 1321711A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grate bar
- grate
- gap
- cooling
- air
- 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.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H3/00—Grates with hollow bars
- F23H3/02—Grates with hollow bars internally cooled
Definitions
- the invention relates to a cooled grate bar for a Moving grate firing with the characteristics of the generic term of Claim 1.
- The is used to cool the grate bars of combustion grates Combustion air, the so-called primary air through the Blown combustion grate into the fuel bed resting on it becomes.
- the cooling effect through the primary air flow is determined by the gap size between the grate bars or by defined outlet openings and the flow resistance of the Primary air through the fuel bed at this point. Will the Primary airflow z. B. laid by liquid slags, the Block the gap or clog the outlet openings, so the affected grate bar is practically not cooled.
- the grate bar on the bottom with cooling fins be provided, which are blown by the primary air.
- Out DE 41 05 330 C1 is a grate bar with a hollow box-like Cross section known. Between the top and bottom of this grate bar are two chambers by a central rib formed, which is charged with air from the rear are. The air passes through the chambers a slot nozzle on the front of the grate bar in the Combustion chamber. This type of cooling also exists the risk of clogging the slot nozzle so that the air do not come out of the grate bar and therefore do not cool it can.
- EP 0 924 464 A1 describes a cooled grate bar known, on the underside of an unspecified Wise a meandering, air flow Pipe coil is attached. After flowing through the Pipe coil the air comes out of the grate bar Underside through laterally arranged outlet openings. If the pipe coil is insufficiently secured, the Heat transfer from the grate bar into the cooling air through the Pipe coil significantly affected.
- the meandering Laying the pipe coil basically leads to an asymmetrical one Temperature distribution in the grate bar. The result is warping the grate bar with an undesirable gap formation between side by side grate bars.
- the invention has for its object the generic To design the grate bar so that it is safe and even with Air is cooled.
- the symmetrical with respect to the longitudinal axis of the grate bar running cooling gap and that over the entire Grid bar width extending exit gap ensure a uniform cooling of the grate bar.
- the one on the bottom of the Grid rod laid outlet gap can not be through the on the Burning rust dormant fuel bed can be clogged, so that the grate bar is always flowed through by cooling air.
- sloping downwards directed combustion grate of a moving grate combustion consists of several rows of grids arranged side by side 1.
- the moving grate firing is used to burn fuel or preferably garbage, which as a fuel layer on the Burn grate is applied.
- the grate bars 1 one Row of bars are mounted on a grate bar support 2.
- the Grate bars 1 of the individual rows of bars are roof tiles one above the other.
- a funnel 3 is located below the combustion grate, through which the grate diarrhea is removed.
- Into the funnel 3 opens a main air line 4 through which the Primary air share in the combustion air for burning the Fuel is supplied.
- the primary air passes through the Gaps between the individual grate bars 1 in the on the Burning rust resting fuel layer. Give the arrows the direction of flow of the primary air.
- the grate bar 1 which preferably consists of a cast part, has a U-shaped profile with a back 5 and two Side flanks 6 on.
- the grate bar 1 is closed with a Head piece 7 and provided with an end piece 8.
- the head 7 the grate bars 1 of a row of bars slide on the back 5 the grate bars 1 of the subsequent row of bars.
- the End piece 8 is mounted on the grate bar support 2.
- the grate bar 1 is on its underside, that is on the Fuel layer facing away and the funnel 3 facing Provide side with a cooling gap 9.
- the cooling gap 9 extends between the side flanks 6 over the entire width of the Grate bar 1 and ends in an exit gap 10, the Width of the cooling gap 9 corresponds.
- the height of the cooling gap 9 is several times less than the height of the grate bar 1.
- the cooling gap 9 is through the side flanks 6 and Cover plate 11 limited in one of the height of the cooling gap 9 corresponding distance from the back 5 on the grate bar 1 is attached.
- the underside of the back 5 of the Grate bar 1 provided with a surface structure that the Has the shape of grooves 12.
- the grooves 12 run in Longitudinal direction of the grate bar 1 from the end piece 8 to the Headpiece 7.
- the exact course of the grooves 12 can be varied and is thermally optimized.
- the cover plate 11 rests on the ridges of the grooves 12.
- the cooling gap 9 is flowed through by cooling air, which is a partial flow branched off from the primary air supplied to the combustion grate is.
- one of the main air line 4 Air line 13 branches.
- the air line 13 is one Throttle valve 14 arranged.
- the air line 13 is one Distribution line 15 out.
- Via flexible branch lines 16 the distributor line 15 is connected to the grate bar supports 2, which are hollow for guiding the cooling air and at the ends are closed.
- the grate bar supports 2 are flexible Pipe sections 17 led to the individual grate bars 1.
- the Cover plate 11 is provided with a feed opening 18 into which each one of the pipe sections 17 opens.
- Die Cover plate 11 follows the continuation of the cooling gap 9 Shape of the head piece 7, being between the lower edge of the Cover plate 11 and a shoulder of the head piece 7 a horizontal section is formed, the outlet gap 10th forms.
- the cooling air supplied to the grate bar 1 flows through the Cooling gap 9 in the longitudinal direction of the grate bar 1 over the entire Grate bar width up to the head piece 7 and occurs horizontally and symmetrically from the exit gap 10.
- the heated one Cooling air mixes with the primary air from the funnel 3, the back 5 of the underlying grate bar 1 is cooled becomes.
- the mixed with the cooling air flows Primary air through the gaps between the grate bars 1 in the Combustion chamber located above the combustion grate, whereby the side flanks 6 of the grate bars 1 are cooled.
- the cover plate 11 ends at a distance from the end piece 8 and thus forms the Exit gap 10, which in this case is vertically downward is directed.
- the cooling air supplied to the grate bar 1 flows through the cooling gap 9 in the longitudinal direction of the grate bar 1 over the entire grate bar width starting from the head piece 7 than the hottest section of the grate bar 1 and occurs in the Near the end piece 8 symmetrically and vertically downwards the exit gap 10 from.
- This variant is thermal cheaper than the variant shown in Fig.
- the heated cooling air mixes with the primary air from the Funnel 3 to a uniform mixing temperature. Subsequently the air mixture flows from heated cooling air and primary air through the gaps between the grate bars 1 in the above the Combustion grate lying combustion chamber, the Side flanks 6 of the grate bars 1 are cooled.
- the amount of cooling air supplied to the grate bars 1 as one Partial flow of the entire primary air is via the throttle valve 14 set in the air line 13. So it's in easier Way possible, the grate bar cooling a changed calorific value of the waste to be incinerated.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Furnace Details (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
- Fig. 1
- schematisch die Seitenansicht eines Verbrennungsrostes,
- Fig. 2
- den Längsschnitt durch einen einzelnen Roststab,
- Fig. 3
- den Schnitt III - III nach Fig. 2,
- Fig. 4
- den Längsschnitt durch einen einzelnen Roststab gemäß einer anderen Ausführungsform und
- Fig. 5
- den Schnitt III - III nach Fig. 4.
Claims (6)
- Roststab für eine Schubrostfeuerung, wobei der Roststab (1) ein U-förmiges Profil mit einem Rücken (5) und Seitenflanken (6) aufweist und auf seiner Unterseite mit einem von Luft durchströmten Kühlsystem versehen ist, das auf der Unterseite des Roststabes (1) einen Austritt für die Luft aufweist, dadurch gekennzeichnet, dass das Kühlsystem aus einem Kühlspalt (9) besteht, der in Längsrichtung des Roststabes (1) verläuft und sich über die gesamte Breite des Roststabes (1) zwischen den Seitenflanken (6) erstreckt, dessen Höhe um ein Mehrfaches geringer ist als die Höhe des Roststabes (1) und der in dem auf der Unterseite des Roststabes (1) angeordneten Austrittsspalt (10) endet, der der Breite des Kühlspaltes (9) entspricht.
- Roststab nach Anspruch 1, dadurch gekennzeichnet, dass der Kühlspalt (9) durch die Unterseite des Rückens (5) des Roststabes (1) und eine auf dem Roststab (1) befestigte Abdeckplatte (11) begrenzt ist.
- Roststab nach Anspruch 2, dadurch gekennzeichnet, dass der Rücken (5) des Roststabes (1) auf der Unterseite mit einer Oberflächenstruktur in Form von in Längsrichtung der Roststabes (1) verlaufenden Rillen (12) versehen ist, auf deren Kämme die Abdeckplatte (11) aufliegt.
- Roststab nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Zuführung der Luft zu dem Kühlspalt (9) am Ende des Roststabes (1) und der Austrittsspalt (10) am Kopf des Roststabes (1) vorgesehen ist und dass der Austrittsspalt (10) horizontal ausgerichtet ist.
- Roststab nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Zuführung der Luft zu dem Kühlspalt (9) am Kopf des Roststabes (1) und der Austrittsspalt (10) am Ende des Roststabes (1) vorgesehen ist und dass der Austrittsspalt (10) nach unten gerichtet ist.
- Roststab nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Roststab (1) auf einen geschlossenen, hohlen, einer Reihe von Roststäben (1) gemeinsamen Roststabträger (2) gelagert ist, dass der Roststabträger (2) einerseits über Rohrabschnitte (17) mit dem Kühlspalt (9) der Roststäbe (1) und andererseits mit einer Luftleitung (13) verbunden ist, die von einer die Schubrostfeuerung mit Verbrennungsluft versorgenden Hauptluftleitung (4) abgezweigt ist und in der eine Drosselklappe (14) angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10163670A DE10163670A1 (de) | 2001-12-21 | 2001-12-21 | Roststab für eine Schubrostfeuerung |
DE10163670 | 2001-12-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1321711A1 true EP1321711A1 (de) | 2003-06-25 |
EP1321711B1 EP1321711B1 (de) | 2008-07-30 |
Family
ID=7710662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02028385A Expired - Lifetime EP1321711B1 (de) | 2001-12-21 | 2002-12-18 | Luftgekühlter Roststab für eine Schubrostfeuerung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1321711B1 (de) |
JP (1) | JP4135898B2 (de) |
KR (1) | KR100659136B1 (de) |
AT (1) | ATE403111T1 (de) |
DE (2) | DE10163670A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1612483A2 (de) * | 2004-07-03 | 2006-01-04 | Lurgi Lentjes AG | Rostplatte, zugehöriger Verbrennungsrost und korrespondierende Reststoffverbrennungsanlage |
EP1801499A1 (de) * | 2005-12-23 | 2007-06-27 | W.T.E. Waste to Energy S.R.L. | Verbrennungsrost für feste Brennstoffe |
EP2184540A1 (de) * | 2008-11-05 | 2010-05-12 | Von Roll Umwelttechnik AG | Luftgekühlter Rostblock |
EP2381174A1 (de) | 2010-04-21 | 2011-10-26 | Marco Bachmann | Verkleidungselement für Vorrichtungsteile von Verbrennungsöfen |
EP2949995A3 (de) * | 2014-05-05 | 2016-03-02 | Tiska GmbH | Kühlbarer Roststab für einen Vorschubrost einer Verbrennungsanlage |
EP3967926A1 (de) * | 2020-09-09 | 2022-03-16 | Hitachi Zosen Inova AG | Rostblock mit ansteigender nase |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101143978B1 (ko) | 2010-01-13 | 2012-05-09 | 진영신 | 소각로용 화격자 |
KR101330450B1 (ko) * | 2012-12-21 | 2013-11-15 | 조경열 | 소각로용 화격자 구조 |
DE102014015916A1 (de) | 2014-10-29 | 2016-05-04 | Steinmüller Babcock Environment Gmbh | Roststab und Rost für eine Schubrostfeuerung |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE959212C (de) * | 1948-10-02 | 1957-02-28 | Martin Joh Jos Dr Ing | Aus luftgekuehlten Hohlroststaeben bestehender Rost |
DE1301421B (de) * | 1967-06-02 | 1969-08-21 | Johannes Josef Dr Ing | Rost fuer Grossfeuerungen mit luftgekuehlten Roststaeben |
DE3343024A1 (de) * | 1983-11-28 | 1985-06-05 | Wärmetechnik Dr. Pauli GmbH, 8035 Gauting | Luftgekuehlter beweglicher rost |
EP0458108A2 (de) * | 1990-05-21 | 1991-11-27 | Nkk Corporation | Rost-Aufbau für eine horizontale Abfallverbrennungsanlage |
DE4105330C1 (de) | 1991-02-18 | 1992-08-06 | Noell - K + K Abfalltechnik Gmbh, 4040 Neuss, De | |
EP0924464A1 (de) | 1997-12-19 | 1999-06-23 | KOCH, Theodor | Verfahren zur Kühlung des Rostes von Verbrennungsanlagen und Verbrennungsrost |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3230597C1 (de) * | 1982-08-17 | 1983-12-22 | Johannes Josef Edmund 1000 Berlin Martin | Roststab fuer Rostbelaege,insbesondere von Feuerungen |
-
2001
- 2001-12-21 DE DE10163670A patent/DE10163670A1/de not_active Withdrawn
-
2002
- 2002-12-13 KR KR1020020079524A patent/KR100659136B1/ko active IP Right Grant
- 2002-12-18 AT AT02028385T patent/ATE403111T1/de not_active IP Right Cessation
- 2002-12-18 EP EP02028385A patent/EP1321711B1/de not_active Expired - Lifetime
- 2002-12-18 DE DE50212566T patent/DE50212566D1/de not_active Expired - Lifetime
- 2002-12-20 JP JP2002383513A patent/JP4135898B2/ja not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE959212C (de) * | 1948-10-02 | 1957-02-28 | Martin Joh Jos Dr Ing | Aus luftgekuehlten Hohlroststaeben bestehender Rost |
DE1301421B (de) * | 1967-06-02 | 1969-08-21 | Johannes Josef Dr Ing | Rost fuer Grossfeuerungen mit luftgekuehlten Roststaeben |
DE3343024A1 (de) * | 1983-11-28 | 1985-06-05 | Wärmetechnik Dr. Pauli GmbH, 8035 Gauting | Luftgekuehlter beweglicher rost |
EP0458108A2 (de) * | 1990-05-21 | 1991-11-27 | Nkk Corporation | Rost-Aufbau für eine horizontale Abfallverbrennungsanlage |
DE4105330C1 (de) | 1991-02-18 | 1992-08-06 | Noell - K + K Abfalltechnik Gmbh, 4040 Neuss, De | |
EP0924464A1 (de) | 1997-12-19 | 1999-06-23 | KOCH, Theodor | Verfahren zur Kühlung des Rostes von Verbrennungsanlagen und Verbrennungsrost |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1612483A2 (de) * | 2004-07-03 | 2006-01-04 | Lurgi Lentjes AG | Rostplatte, zugehöriger Verbrennungsrost und korrespondierende Reststoffverbrennungsanlage |
EP1612483A3 (de) * | 2004-07-03 | 2006-02-08 | Lurgi Lentjes AG | Rostplatte, zugehöriger Verbrennungsrost und korrespondierende Reststoffverbrennungsanlage |
EP1801499A1 (de) * | 2005-12-23 | 2007-06-27 | W.T.E. Waste to Energy S.R.L. | Verbrennungsrost für feste Brennstoffe |
EP2184540A1 (de) * | 2008-11-05 | 2010-05-12 | Von Roll Umwelttechnik AG | Luftgekühlter Rostblock |
WO2010051953A1 (en) * | 2008-11-05 | 2010-05-14 | Von Roll Umwelttechnik Ag | Air-cooled grate block |
EP2381174A1 (de) | 2010-04-21 | 2011-10-26 | Marco Bachmann | Verkleidungselement für Vorrichtungsteile von Verbrennungsöfen |
CH703063A1 (de) * | 2010-04-21 | 2011-10-31 | Marco Bachmann | Verkleidungselement für Vorrichtungsteile von Verbrennungsöfen. |
US8661994B2 (en) | 2010-04-21 | 2014-03-04 | Mb Wasserstrahlschneidetechnik Ag | Cladding element for device sections of incinerators |
EP2949995A3 (de) * | 2014-05-05 | 2016-03-02 | Tiska GmbH | Kühlbarer Roststab für einen Vorschubrost einer Verbrennungsanlage |
EP3967926A1 (de) * | 2020-09-09 | 2022-03-16 | Hitachi Zosen Inova AG | Rostblock mit ansteigender nase |
WO2022053551A1 (de) * | 2020-09-09 | 2022-03-17 | Hitachi Zosen Inova Ag | Rostblock mit ansteigender nase |
US11808450B2 (en) | 2020-09-09 | 2023-11-07 | Hitachi Zosen Inova Ag | Grate block with rising nose |
Also Published As
Publication number | Publication date |
---|---|
KR100659136B1 (ko) | 2006-12-18 |
JP4135898B2 (ja) | 2008-08-20 |
EP1321711B1 (de) | 2008-07-30 |
JP2003232513A (ja) | 2003-08-22 |
DE50212566D1 (de) | 2008-09-11 |
KR20030052987A (ko) | 2003-06-27 |
DE10163670A1 (de) | 2003-07-03 |
ATE403111T1 (de) | 2008-08-15 |
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