EP0989364B1 - Rostelement und Verfahren zum Kühlen desselben - Google Patents
Rostelement und Verfahren zum Kühlen desselben Download PDFInfo
- Publication number
- EP0989364B1 EP0989364B1 EP19980810961 EP98810961A EP0989364B1 EP 0989364 B1 EP0989364 B1 EP 0989364B1 EP 19980810961 EP19980810961 EP 19980810961 EP 98810961 A EP98810961 A EP 98810961A EP 0989364 B1 EP0989364 B1 EP 0989364B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grate
- block
- longitudinal direction
- blocks
- stationary
- 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 grate element for a system for thermal treatment of waste according to the generic term of claim 1.
- the invention further relates to a Method for cooling a grate element according to the Preamble of claim 6.
- a grate element a waste incineration plant known with which the Waste conveyed through a combustion chamber and thereby is dried and burned.
- the grate element points several grate blocks arranged one behind the other in steps on, alternating between fixed and movable Grate blocks are arranged in succession. That on waste material located in the grate element, for example Garbage is made by a pushing movement of the moving Grate blocks pushed forward, mixed, dried and burned. To reduce the high thermal Each grate block is cooled with water.
- the present invention is based on the object to form economically more advantageous grate element.
- the task is further solved with a method for Cooling a grate element having the features of Claim 6.
- the sub-claims 7 and 8 relate to further advantageous process steps.
- a grate element comprising a plurality of in a longitudinal direction successively arranged grate blocks, which either as fixed grate blocks or in the longitudinal direction movable grate blocks are designed, each Rust block has a foot, which on the in The longitudinal direction of the subsequent grate block rests, whereby only the fixed grate blocks for cooling with a fluid are designed.
- the fixed grate blocks have a cooled foot that has a contact surface trains which on the underlying, in Longitudinally movable grate block rests. This Contact area covers part of the surface of the movable grate block and thereby causes cooling the surface of the movable grate block.
- the movable grate block also has a foot, which is on the surface of a chilled, fixed Rust block rests and back and forth in the longitudinal direction is moved and thereby cooled.
- a fluid for cooling especially a liquid such as water.
- the advantages achieved by the invention are to see in particular in the effective cooling, whereby Thermal stresses and thermal expansions in the grate block largely be eliminated. Because only the fixed So far, rust blocks are cooled required, movable fluid lines, which were necessary around the movable grate block in particular to supply water. Operation of the Rust elements according to the invention are therefore less prone to failure and less expensive. In addition, the Assembly and changing of the movable grate blocks simplified. The movable grate blocks also need no fluid conductive interiors and are therefore less expensive to produce.
- FIG. 1 shows a grate element 3 as part of a grate for a plant for the thermal treatment of waste such as waste shown.
- a rust track sits like a broken line indicated, in length from several grate elements 3 together. As a rule, three to six rust elements 3 arranged in a row.
- several Grate tracks are placed side by side; usually one to four grate tracks form the width of the grate. The Number of grate elements 3 and the grate tracks depends on the predetermined throughput of the waste and of its Calorific value.
- Each grate element 3 has in the illustrated Execution example eight in the longitudinal direction L in a row arranged grate blocks 4.5, each one fixed grate block 4 a movable grate block 5 follows. All grate blocks 4, 5 are at one end by one Block holder tube 7 pivotally mounted. The block holder tube 7 the fixed grate blocks 4 is on a stationary Console 8 attached, while the block holder tube 7 of movable grate blocks 5 on a in the longitudinal direction L linear movable console 9 is attached. All movable consoles 9 are on a in the longitudinal direction L back and forth movable grate carriage 10 attached, which via rollers 12 on a carrier 13 of the grate element 3 is stored.
- This movement in the longitudinal direction L causes essentially a movement of the movable grate blocks 5 in Direction of movement L1, with all grate blocks also one slight pivoting movement around the respective block holding tube 7 To run.
- In the direction perpendicular to the display plane can have a plurality of rust blocks 4.5 next to each other be arranged, which are mutually connected via a pull rod 14 are tense.
- the formed by the grate blocks 4.5 The conveyor line is laterally through a side termination 15 limited.
- FIG. 2 shows a bottom view from the P direction Embodiment of a cooled, fixed Grate blocks 4.
- Fig. 3 shows the same grate block 4 as Cross section along the line A-A.
- the grate block 4 has a block body 20 of a U-shaped Cross-section, the top wall of which is 23 is designated.
- the outer surface of the upper wall 23 forms a usable area 33 on which the waste to be treated comes to rest and along which it transports becomes.
- a rear wall 21 of the block body 20 is included provided a hook 22 for hanging on the block holder tube 7. Between the top wall 23 and a front wall 24 there is a corner 25.
- the grate block 4 with an inclined floor 28 and a foot 26 with a Support surface 26a provided.
- Water supply line 30 with the water supply direction is indicated by an arrow W1.
- Parallel to the back wall 21 extends to the water supply line 30 connected water supply cross line 31, which on individual points is provided with outlet openings 32.
- From the water supply cross line 31 branch three along arranged water supply branch lines 34 from the extend to the front wall 24 and there are so angled that their outlet opening 35 is immediately in front of the foot 26. That from the Outlet opening 35 fills water together with the water emerging from the outlet openings 32 closed cold room 27, both of these Counteract water currents in a certain sense and for a good water mixing or for a reinforced one Provide cooling effect. It is important that the particularly mechanically stressed point of the Rust blocks 4, namely the foot 26, directly with the Cooling water is applied.
- the highest temperatures and therefore the highest thermal stress is the front corner 25 exposed.
- Inlet openings 41 from two water discharge branch lines 40 attached. Entry from heated water in the water discharge branch pipes 40 is indicated by an arrow W4.
- the water drainage branch lines 40 extend obliquely along of the bottom 28 and open into a parallel to the Water supply cross line 31 arranged opposite this lower water drainage cross line 42. From there the heated water is discharged by means of a discharge line 43 in Directed by an arrow W5 out of the cooling space 27.
- the water supply line 30 and the water discharge line 43 are on in a manner not shown Cold water low pressure system connected. A connection to a closed cooling water system with a built-in heat exchanger is preferred.
- FIG. 4 shows a perspective view from below another embodiment of a coolable, stationary grate blocks 4.
- Fig. 5 shows the same Grate block 4 as a cross section along the line B-B.
- the block body 20 comprises a front wall 24 with a foot 26 and support surface 26a, a rear wall 21, two Side walls 29, two hooks 22 and an upper wall 23 with Usable area 33.
- a tube 16 poured which to a water supply line 30 and can be connected to a water discharge line 43.
- the course of the Tube 16 chosen such that good cooling of the top wall 23 results, as well as a good cooling in Area of the foot 26 in which the tube 16, as in FIG. 5 shown, perpendicular to the plane of representation and thus parallel to the direction of the foot 26 within the Foot 26 runs. With this arrangement, the foot 26 a large amount of heat is removed.
- the movable grate block 5 has no fluid control system, i.e. no cold room 27 as well no lines 31, 40, 42 according to that in FIGS. 2 and 3 illustrated embodiment, or no tube 16th according to that shown in Figs. 4 and 5 Execution example.
- Such a grate block without Fluid control system is very inexpensive to manufacture.
- the length L3 of the foot 26 in the longitudinal direction L is in an advantageous embodiment of both fixed grate block 4 as well as the movable Grate block 5 at least 1 cm.
- the length L3 can also be longer be and up to half the length L4 of the grate block 4.5 be.
- the support surface 26a can include one smooth surface also a textured surface have such that the greatest possible amount of heat from the movable grate block 5 to the fluid-cooled fixed grate block 4 is transferable.
- Fig. 4 shows a perspective bottom view of the Grate block 4, which is symmetrical to one in FIG. 6 indicated, in the longitudinal direction L and perpendicular to Surface 33 extending symmetry plane S. is. 6 shows the course of the in the grate block 1 according to Fig. 4 cast pipe 16.
- the water is over the Stub 30 fed, and then flows over the Sub-sections 16a, 16b, 16i, 16d, 16k, 16h for in Longitudinal direction L and extending along the side wall 29 Section 16e, and then over the section 16f to the perpendicular to the longitudinal direction L. Section 16g, and then over the symmetrical designed course of the tube 16 back to the nozzle 43.
- the grate block is preferably cooled such that on the one hand, it is as warm as possible to keep it warm on the To remove little heat from surface 33 on the other hand, however, is so cool that it is made of cast iron existing rust block no excessive wear from the experiences high temperature.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
Description
- Fig.1
- ein Ausführungsbeispiel eines Rostelements als Teil eines Rostes;
- Fig.2
- schematisch dargestellt ein Ausführungsbeispiel eines feststehenden Rostblocks von unten in Pfeilrichtung P nach Fig.1 gesehen;
- Fig.3
- einen Schnitt entlang der Linie A-A in Fig.2;
- Fig.4
- eine perspektivische Ansicht eines weiteren feststehenden Rostblockes;
- Fig. 5
- einen Schnitt entlang der Linie B-B in Fig. 4;
- Fig. 6
- eine perspektivische Ansicht des Rohrverlaufes im Rostblock gemäss Fig. 4.
Claims (9)
- Rostelement (3) für eine Anlage zur thermischen Behandlung von Abfall, umfassend eine Mehrzahl von in einer Längsrichtung (L) hintereinander angeordnete Rostblöcke (4,5), welche als feststehende Rostblöcke (4) und in Längsrichtung (L) bewegliche Rostblöcke (5) ausgestaltet sind, wobei jeder Rostblock (4,5) einen Fuss (26) aufweist, welcher auf dem in Längsrichtung (L) nachfolgenden Rostblock (4,5) aufliegt, dadurch gekennzeichnet, dass nur die feststehenden Rostblöcke (4) zum Kühlen mit einem Fluid ausgestaltet sind.
- Rostelement (3) nach Anspruch 1, dadurch gekennzeichnet, dass jeder feststehende Rostblock (4) mit einer Flüssigkeitszufuhrleitung (30) sowie mit einer Flüssigkeitsabfuhrleitung (43) verbunden ist.
- Rostelement (3) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in Längsrichtung (L) abwechslungsweise ein feststehender Rostblock (4) sowie ein beweglicher Rostblock (5) angeordnet sind.
- Rostelement (3) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Fuss (26) der feststehenden Rostblöcke (4) eine Auflagefläche (26a) aufweist, deren Länge in Längsrichtung (L) zumindest 1 cm und maximal die Hälfte der Gesamtlänge (L4) des feststehenden Rostblockes (4) beträgt.
- Rostelement (3) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die zum Kühlen bestimmte Flüssigkeit, insbesondere Wasser, derart innerhalb des feststehenden Rostblockes (4) geleitet ist, dass ein wesentlicher Anteil der gesamten zu entziehenden Wärmemenge dem Fuss (26) entziehbar ist.
- Verfahren zum Kühlen eines Rostelementes (3) in einer Anlage zur thermischen Behandlung von Abfall, wobei das Rostelement (3) eine Mehrzahl von in einer Längsrichtung (L) hintereinander angeordnete Rostblöcke (4,5) umfasst, welche als feststehende Rostblöcke (4) und in Längsrichtung (L) bewegliche Rostblöcke (5) ausgestaltet sind, wobei jeder Rostblock (4,5) einen Fuss (26) aufweist, welcher auf dem in Längsrichtung (L) nachfolgenden Rostblock (4,5) aufliegt, dadurch gekennzeichnet, dass einzig die feststehenden Rostblöcke (4) von einem durchströmenden Fluid gekühlt werden, dass die beweglichen Rostblöcke (5) in Längsrichtung (L) hin und her bewegt werden, und dass die beweglichen Rostblöcke (5) über Berührungskontakte mit den feststehenden Rostblöcken (4) gekühlt werden.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass der bewegliche Rostblock (5) derart in Längsrichtung (L) hin und her bewegt wird, dass zumindest die Hälfte der Länge (L4) des beweglichen Rostblockes (5) vom Fuss (26) des feststehenden Rostblockes (4) überstrichen wird.
- , Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass in Längsrichtung (L) gesehen jeder zweite Rostblock (4,5) in Längsrichtung (L) hin und her bewegt wird.
- Müllverbrennungsanlage umfassend ein Rostelement (3) nach einem der Ansprüche 1 bis 5 oder betrieben mit einem Verfahren nach einem der Ansprüche 6 bis 8.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59800138T DE59800138D1 (de) | 1998-09-24 | 1998-09-24 | Rostelement und Verfahren zum Kühlen desselben |
EP19980810961 EP0989364B1 (de) | 1998-09-24 | 1998-09-24 | Rostelement und Verfahren zum Kühlen desselben |
JP11268742A JP2000121013A (ja) | 1998-09-24 | 1999-09-22 | 焙焼部品およびその冷却方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19980810961 EP0989364B1 (de) | 1998-09-24 | 1998-09-24 | Rostelement und Verfahren zum Kühlen desselben |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0989364A1 EP0989364A1 (de) | 2000-03-29 |
EP0989364B1 true EP0989364B1 (de) | 2000-04-26 |
Family
ID=8236347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980810961 Expired - Lifetime EP0989364B1 (de) | 1998-09-24 | 1998-09-24 | Rostelement und Verfahren zum Kühlen desselben |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0989364B1 (de) |
JP (1) | JP2000121013A (de) |
DE (1) | DE59800138D1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1983261A1 (de) | 2007-04-20 | 2008-10-22 | Ernst Schenkel | Bewegungsausgleicher |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3961790B2 (ja) * | 2001-06-25 | 2007-08-22 | 株式会社タクマ | 水冷式火格子 |
FR2868515B1 (fr) * | 2004-04-01 | 2015-04-24 | Vinci Environnement | Module de grille pour four d'incineration des ordures menageres |
DE202005011215U1 (de) | 2005-07-16 | 2005-09-29 | Lls Standardkessel Service Gmbh | Vorschubrost für Feuerungsanlagen |
EP1975507A1 (de) * | 2007-03-29 | 2008-10-01 | ThyssenKrupp Xervon Energy GmbH | Vorschubrost für Feuerungsanlagen |
JP3138454U (ja) * | 2007-09-15 | 2008-01-10 | 株式会社川崎技研 | ゴミ焼却炉の火格子の構造 |
SE1951417A1 (en) * | 2019-12-09 | 2021-06-10 | Flamma Systems Sverige Ab | An incinerator with a firing grate and a method of operating such an incinerator |
EP3967927A1 (de) * | 2020-09-09 | 2022-03-16 | Hitachi Zosen Inova AG | Wassergekühlter rostblock für eine verbrennungsanlage |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1975601A (en) * | 1929-08-10 | 1934-10-02 | Graafen Ferdinand | Furnace grate |
FR2508140A1 (fr) * | 1981-06-19 | 1982-12-24 | Guyard Jacques | Installation de chauffage a combustible solide par exemple pulverulent, comportant un dispositif de fond de foyer ajoure |
CH688840A5 (de) | 1994-11-17 | 1998-04-15 | Von Roll Umwelttechnik Ag | Kühlbarer Rostblock. |
-
1998
- 1998-09-24 EP EP19980810961 patent/EP0989364B1/de not_active Expired - Lifetime
- 1998-09-24 DE DE59800138T patent/DE59800138D1/de not_active Expired - Lifetime
-
1999
- 1999-09-22 JP JP11268742A patent/JP2000121013A/ja active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1983261A1 (de) | 2007-04-20 | 2008-10-22 | Ernst Schenkel | Bewegungsausgleicher |
Also Published As
Publication number | Publication date |
---|---|
EP0989364A1 (de) | 2000-03-29 |
JP2000121013A (ja) | 2000-04-28 |
DE59800138D1 (de) | 2000-06-08 |
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