EP1191282B1 - Gekühlter Rostblock - Google Patents
Gekühlter Rostblock Download PDFInfo
- Publication number
- EP1191282B1 EP1191282B1 EP01121141A EP01121141A EP1191282B1 EP 1191282 B1 EP1191282 B1 EP 1191282B1 EP 01121141 A EP01121141 A EP 01121141A EP 01121141 A EP01121141 A EP 01121141A EP 1191282 B1 EP1191282 B1 EP 1191282B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- grate
- block
- lines
- feed
- 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 - Lifetime
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H17/00—Details of grates
- F23H17/12—Fire-bars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H7/00—Inclined or stepped grates
- F23H7/06—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding
- F23H7/08—Inclined or stepped grates with movable bars disposed parallel to direction of fuel feeding reciprocating along their axes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23H—GRATES; CLEANING OR RAKING GRATES
- F23H2900/00—Special features of combustion grates
- F23H2900/03021—Liquid cooled grates
Definitions
- the invention relates to a cooled grate block according the preamble of claim 1.
- a grate block of this kind is for example in EP-B-0 713 056.
- This grate block has a Block body of a U-shaped cross-section, whose upper wall a support surface for the treatment Waste forms.
- a below the support surface arranged, to a water supply line and a Water drainage line connected refrigerator is through the upper wall and a front wall of the block body limited, which together form a corner space. It exists the danger of being in this at the top of the Refrigerator available corner space air or vapor bubbles form, through which the cooling just in the thermal particularly stressed part of the block body is impaired.
- the present invention is based on the object to create a grate block of the type mentioned, in which by simple means the cooling impairing formation of air or vapor bubbles in the top of the refrigerator is avoided.
- Fig. 1 shows a per se known grate element 3 as part a grate for a thermal treatment plant of waste.
- An inclined grate track is in length from several grate elements 3 together. In general, will be three to five grate elements 3 arranged one behind the other. It Several grate webs can be arranged next to each other and together determine the grate width; usually One to four rust paths are used.
- Each grate element 3 has several, possibly eight successively arranged in a row staircase grate block rows 4, 5, wherein in each case a fixed grate block row 4 a movable grate block row 5 follows.
- a plurality of grate blocks 6 'are arranged side by side. are used instead of the air-cooled shown in Fig. 1 Grate blocks 6 'water-cooled, below with reference to FIG.
- rust blocks 6 used are in usually three to four such grate blocks 6 on a Blockhalterohr 7 hung and firmly together connected, preferably screwed (in air-cooled Grate blocks 6 'is a much larger number, in the Rule 16 to 24 grate blocks 6 'per grate block row 4 or 5 necessary). At the extreme rust block every firm Grate block row 4, a side plate 15 is screwed.
- Each grate block 6 ' has a support surface 24', on the waste to be treated comes to lie and along which it is transported (the bearing surfaces 24 'are at an angle of about 18 ° to the horizontal plane ) Are arranged. Further, each grate block 6 'with a front wall 23 'and one with the front wall 23 'connected foot 30' provided, with which he on the Support surface 24 'of the downstream grate block 6' rests.
- the grate carriage 10 is by means of two driven in parallel hydraulic cylinder 11 and while rolling over 12 on treads 13 back and forth emotional.
- the movable rows of grate blocks are also being used 5 moves, which have a pushing and shearing action on the exercise on the grate web located waste material, so that again and again new waste surfaces of the thermal Be exposed to treatment in the firebox simultaneous feed forward of the waste material.
- water-cooled grate block 6 based of Fig. 2 to 10 described in the above described manner rust, optionally one Combustion grate is provided.
- the grate block 6 includes one as a casting manufactured block body 20 of a substantially U-shaped Cross-section, which has a rear wall 21, an upper Wall 22 and a front wall 23 has.
- the back Wall 21 is equipped with two hooks 25, with which the grate block 6 on the known from Fig. 1 block pipe. 7 is hung.
- the outer surface of the upper wall 22 forms the already mentioned bearing surface 24 for the treating waste.
- the upper wall 22 and the front wall 23 are at their Clash thickened so that one the corner space between these two walls 22, 23 fills Wall transition 26 is formed (see in particular Fig. 3, 5 and 10).
- This has an inner surface 27 and a Outer surface 28 on, the two towards the front Wall 23 run obliquely down.
- the front wall 23 is connected to the already mentioned foot 30, the to is determined on the support surface 24 of a subsequent Grate block 6 to rest relatively displaceable.
- the block body 20 also has a to the foot 30th adjacent, obliquely directed into the block body interior wall 31 on, over several over the grate block width evenly distributed nozzles 32 with the wall transition 26th and connected to the front wall 23.
- the oblique arranged nozzles 32 are provided with openings 33 which in the area of the front wall 23 an angled Exit portion 34 (see Fig. 5).
- By the Openings 33 is from below in the direction of arrow L of FIG. 3rd
- air as one for the combustion of the Waste necessary oxidizing agent supplied. (At a Pyrolyserost accounts in contrast to one Combustion grate the nozzles 32 and the air openings 33, because no air is passed through the grate).
- the block body 20 has two side walls 37, which with each a screw hole 38 for connecting, preferably Screwing the adjacent grate blocks 6 a Grate block row are provided.
- Side walls 37 equipped with tabs 39, over which the outermost grate blocks of each fixed grate block row 4 connected to the already mentioned side plates 15, preferably can be screwed.
- the upper wall 22 is on its inside with two over the grate block width extending stiffeners 43, 44 provided. At the rear stiffener 44 is a Heel 45 made. Also at the foot 30 adjacent wall 31 is provided with a shoulder 46 fitted. The two shoulder surfaces 45, 46 are used for Supporting a floor 50 ( Figures 2 and 3) attached to the Stiffener 44, on the wall 31 and at the two Sidewalls 37 is welded.
- the floor 50 has a lower, oblique to the longitudinal direction of the grate block. 6 extending and upwardly rising part 51 and a rear wall forming part 52. The Both bottom parts 51, 52 are over a rounded part 53 interconnected.
- a Refrigerator 55 sealed enclosed.
- the water supply takes place in the direction of arrow Z according to FIG. 2 over a the rear bottom portion 52 sealingly protruding Water supply main 57 instead of in one as a Art container trained water supply cross-line 58th empties.
- this container has a Semicircular cross section (see Fig. 3).
- Water supply cross-line 58 optionally branch two Water supply branching lines 59 from that to the Wall transition 26 extend and with her with a Outlet opening 59 'provided end in each case rib-like recess 35 of the wall transition 26 or in an upper, in cross-section round and in the diameter of the Branch line 59 corresponding part 36 thereof protrude (see in particular Fig. 3, 6, 7 and 8).
- the water discharge branch lines 61 open at the rear in one as a kind of container optionally square Cross-section formed water drain cross-line 62nd (The already mentioned water supply branch pipes 59 project through this transverse conduit 62 sealingly therethrough.)
- the water drainage cross-line 62 is one with the rear Bottom part 52 sealingly penetrating water drainage main 63 connected.
- the water drainage or the Water return is indicated in Fig. 2 with arrow R.
- the inner surface 27 of the Refrigerator 55 is limited in its uppermost area, is in easy way the danger of insufficient cooling - caused by the formation of insulating air or steam bubbles - largely eliminated. It can in the Difference to the grate block according to EP-B-0 713 056 all in Refrigerator 55 housed water pipes in one common level, what are manufacturing and Montagetechnisch is much easier and the Possibility, all pipelines to one fauxzuschweiissen solid block and in the refrigerator 55 exactly to position.
- the rib-like recesses 35 each have a to the outer and inner surface 28, 27 of the wall transition 26 parallel surface 67 ( Figures 3 and 8) on, so that too within the recesses 35 no corner space is formed, in which a cooling of the block body 20th could form an impairing air or vapor bubble.
- the from the outlet openings 59 'leaking cooling water is by the respective, acting as a kind of water pipe Recess 35 in the lower, through the lower part of front wall 23, the foot 30 and the sloping wall 31 limited part of the cooling chamber 55 deflected, flows through this one hand along the wall 31 to the rear and on the other hand in the transverse direction of the grate block 6 to the adjacent, for the water drain branch lines 61 provided recesses 35, in which it turn rises to the inlet openings 61 '.
- the Inlets 61 'always remain in the cooling water immersed.
- the rib-like recesses 35 provide also for adequate cooling of the cross-section Thickened wall transition 26.
- the cooling space 55 is substantially reduced. This extends in its length from the front wall 23rd only over part of the block body length behind, preferably up to the support line of the overlying, upstream grate block 6. With In other words, corresponds to the length of the cooling space 55 in substantially the distance of the front walls 23 of two in the longitudinal direction of the grate element 3 downstream or superposed grate blocks 6, namely the maximum distance in a resting state.
- cooling space 55 In a reduced in volume cooling space 55 is a greater pressure is allowed without the grate block 6 is exposed to an impermissible load or its wall thickness must be increased.
- the pressure in previous refrigerator limited at about 3 to 5 bar can he now with the same dimensioning of the block body 20th be about 10 to 12 bar.
- the temperature of the Cooling water can reach higher values (instead of 80 ° C like so far, the temperature can be up to 160 ° C), which better energy yield means.
- the cooling of the inventively designed grate block 6 is much more efficient than previous ones Grate blocks.
- a rust is known to be large in length Fluctuations in temperature exposure. To this To account for fluctuations, has been the Cooling water in the grate from below against the waste flow from each grate block to the other, above the grate block directed. This is because of Relativverschieb sadness These grate blocks a large number of Hose connections have been necessary. There are also grates in which only the fixed grate block rows of the Be subjected to water cooling. When using Grate blocks 6, which have a higher pressure in the refrigerator 55 and allow a greater warming of the cooling water, is one Cross-cooling in the respective grate block row 4 or 5 arranged side by side, screwed together firmly Rust blocks 6 become possible.
- both the solid and the movable grate block rows 4 and 5 from the according to the invention water-cooled grate blocks 6 composed.
- the inventive Grate blocks or grates water is preferably used; however, all are suitable under the term "cooling water” Understand coolants.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
- Fig. 1
- ein Ausführungsbeispiel eines Rostelementes als Teil eines Rostes nach dem Stand der Technik;
- Fig. 2
- ein Ausführungsbeispiel eines erfindungsgemässen Rostblockes von unten in Pfeilrichtung P nach Fig. 1 gesehen;
- Fig. 3
- im vergrösserten Massstab einen Schnitt nach Linie III-III in Fig. 2;
- Fig. 4
- einen Teil eines Blockkörpers in Unteransicht;
- Fig. 5
- einen Schnitt nach Linie V-V in Fig. 4;
- Fig. 6
- einen Schnitt nach Linie VI-VI in Fig. 5;
- Fig. 7
- einen Schnitt nach Linie VII-VII in Fig. 5;
- Fig. 8
- einen Schnitt nach Linie VIII-VIII in Fig. 4;
- Fig. 9
- einen Teil einer Blockkörperwand in Pfeilrichtung H nach Fig. 8 gesehen; und
- Fig. 10
- einen Schnitt nach Linie X-X in Fig. 4.
Claims (11)
- Gekühlter Rostblock als Teil eines Rostes für eine Anlage zur thermischen Behandlung von Abfall, bei dem die Rostblöcke (6) treppenartig übereinanderliegend angeordnet sind, mit einem als ein Gussteil hergestellten Blockkörper (20), der eine eine Auflagefläche (24) für den zu behandelnden Abfall bildende obere Wand (22) sowie eine vordere Wand (23) aufweist, wobei die beiden Wände (22, 23) einen unter der Auflagefläche (24) angeordneten, an eine Wasserzufuhrleitung (57, 58, 59) sowie eine Wasserabfuhrleitung (61, 62, 63) angeschlossenen Kühlraum (55) begrenzen, dadurch gekennzeichnet, dass die beiden Wände (22, 23) an ihrem Zusammenstoss derart verdickt sind, dass ein den Eckraum zwischen den beiden Wänden (22, 23) ausfüllender Wandübergang (26) mit einer im wesentlichen ebenen, den Kühlraum (55) im obersten Bereich begrenzenden Innenfläche (27) entsteht.
- Gekühlter Rostblock nach Anspruch 1, dadurch gekennzeichnet, dass im Kühlraum (55) eine Anordnung (60) von Wasserzufuhrleitungen (57, 58, 59) und Wasserabfuhrleitungen (61, 62, 63) untergebracht ist, die mehrere Austrittsöffnungen (59') bzw. mehrere Eintrittsöffnungen (61') aufweisen, und die jeweils an eine in den Kühlraum (55) mündende Wasserzufuhr- bzw. Wasserabfuhr-Hauptleitung (57 bzw. 63) angeschlossen sind.
- Gekühlter Rostblock nach Anspruch 2, dadurch gekennzeichnet, dass die Anordnung (60) je eine an die Wasserzufuhr- Hauptleitung (57) bzw. an die Wasserabfuhr-Hauptleitung (63) angeschlossene, im hinteren Bereich des Kühlraumes (55) angeordnete Querleitung (58, 62) umfasst, wobei an die Wasserzufuhr- Querleitung (58) mehrere Wasserzufuhr-Verzweigungsleitungen (59) und an die Wasserabfuhr-Querleitung (62) mehrere Wasserabfuhr-Verzweigungsleitungen (61) angeschlossen sind, die mit ihren Austritt- bzw. Eintrittsöffnungen (59', 61') in den vorderen Bereich des Kühlraumes (55) hineinragen.
- Gekühlter Rostblock nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass alle Wasserzufuhrleitungen (57, 58, 59) und Wasserabfuhrleitungen (61, 62, 63) in einer gemeinsamen Ebene angeordnet sind.
- Gekühlter Rostblock nach Anspruch 4, dadurch gekennzeichnet, dass der Wandübergang (26) mit einer Anzahl von entlang der Blockkörperbreite verteilten, zur oberen und zur vorderen Wand (22, 23) rechtwinklig angeordneten, rippenartigen Ausnehmungen (35) versehen ist, in welche die Wasserzufuhr-Verzweigungsleitungen (59) und die Wasserabfuhr-Verzweigungsleitungen (61) mit ihren mit den Austritt- bzw. Eintrittsöffnungen (59' bzw. 61') versehenen Endteilen hineinragen, und die zur Umlenkung des Kühlwasserstromes vorgesehen sind.
- Gekühlter Rostblock nach Anspruch 5, dadurch gekennzeichnet, dass die Innenwände der Ausnehmungen (35) eine zur Innenfläche (27) des Wandüberganges (26) parallele Innenfläche (67) umfassen.
- Gekühlter Rostblock nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die Anordnung (60) von Wasserzufuhrleitungen (57, 58, 59) und Wasserabfuhrleitungen (61, 62, 63) als eine Verrohrung bzw. ein Block von miteinander fest verbundenen, vorzugsweise verschweissten Rohrleitungen ausgebildet ist.
- Gekühlter Rostblock nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich der Kühlraum (55) von der vorderen Wand (23) nur über einen Teil der Blockkörperlänge nach hinten erstreckt.
- Gekühlter Rostblock nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich der Kühlraum (55) von der vorderen Wand (23) bis zur Auflagelinie des darüberliegenden, vorgeschalteten Rostblockes (6) nach hinten erstreckt und somit in seiner Länge im wesentlichen dem Abstand der vorderen Wände (23) zweier einander nachgeschalteten Rostblöcke entspricht.
- Rost umfassend gekühlte Rostblöcke (6) nach einem der Ansprüche 1 bis 9.
- Rost nach Anspruch 10, mit mehreren ortsfesten Rostblockreihen (4) und mehreren beweglichen Rostblockreihen (5), die abwechselnd einander folgend angeordnet sind, wobei mehrere Rostblöcke (6) nebeneinander an einem Blockhalterohr (7) eingehängt und miteinander fest verbunden die jeweilige Rostblockreihe (4 bzw. 5) bilden, dadurch gekennzeichnet, dass sowohl die ortsfesten Rostblockreihen (4) als auch die beweglichen Rostblockreihen (5) durch die wassergekühlten Rostblöcke (6) nach einem der Ansprüche 1 bis 7 gebildet sind.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH18492000 | 2000-09-22 | ||
CH18492000 | 2000-09-22 | ||
CH18482000 | 2000-09-22 | ||
CH18482000 | 2000-09-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1191282A1 EP1191282A1 (de) | 2002-03-27 |
EP1191282B1 true EP1191282B1 (de) | 2003-04-16 |
Family
ID=25739011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01121141A Expired - Lifetime EP1191282B1 (de) | 2000-09-22 | 2001-09-04 | Gekühlter Rostblock |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1191282B1 (de) |
JP (1) | JP3537413B2 (de) |
AT (1) | ATE237784T1 (de) |
DE (1) | DE50100171D1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012507688A (ja) * | 2008-11-05 | 2012-03-29 | ヒタチ ゾウセン イノバ アーゲー | 空冷式火格子ブロック |
RU2673020C1 (ru) * | 2015-06-12 | 2018-11-21 | Хитачи Зосен Инова Аг | Решетчатый элемент для колосниковой решетки |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3734153B2 (ja) * | 2001-06-08 | 2006-01-11 | 株式会社タクマ | 水冷式火格子 |
DE102014106200A1 (de) * | 2014-05-05 | 2015-11-05 | Tiska Gmbh | kühlbarer Roststab für einen Vorschubrost einer Verbrennungsanlage |
DE102019129171A1 (de) * | 2019-10-29 | 2021-04-29 | Alite Gmbh | Roststab für Stufenrost |
EP3967927B1 (de) * | 2020-09-09 | 2024-07-03 | Hitachi Zosen Inova AG | Wassergekühlter rostblock für eine verbrennungsanlage |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07180824A (ja) * | 1993-12-22 | 1995-07-18 | Mitsubishi Heavy Ind Ltd | ストーカ |
CH688840A5 (de) * | 1994-11-17 | 1998-04-15 | Von Roll Umwelttechnik Ag | Kühlbarer Rostblock. |
DE19622424C2 (de) * | 1996-06-04 | 1998-10-29 | Martin Umwelt & Energietech | Rostelement und Rost mit Flüssigkeitskühlung |
-
2001
- 2001-09-04 AT AT01121141T patent/ATE237784T1/de not_active IP Right Cessation
- 2001-09-04 DE DE50100171T patent/DE50100171D1/de not_active Expired - Lifetime
- 2001-09-04 EP EP01121141A patent/EP1191282B1/de not_active Expired - Lifetime
- 2001-09-25 JP JP2001290419A patent/JP3537413B2/ja not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012507688A (ja) * | 2008-11-05 | 2012-03-29 | ヒタチ ゾウセン イノバ アーゲー | 空冷式火格子ブロック |
RU2673020C1 (ru) * | 2015-06-12 | 2018-11-21 | Хитачи Зосен Инова Аг | Решетчатый элемент для колосниковой решетки |
AU2015398478B2 (en) * | 2015-06-12 | 2021-07-01 | Hitachi Zosen Inova Ag | Grate block for a combustion grate |
Also Published As
Publication number | Publication date |
---|---|
DE50100171D1 (de) | 2003-05-22 |
JP3537413B2 (ja) | 2004-06-14 |
EP1191282A1 (de) | 2002-03-27 |
JP2002147736A (ja) | 2002-05-22 |
ATE237784T1 (de) | 2003-05-15 |
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