CA2058282C - Process and an apparatus for removing water from slag - Google Patents
Process and an apparatus for removing water from slagInfo
- Publication number
- CA2058282C CA2058282C CA002058282A CA2058282A CA2058282C CA 2058282 C CA2058282 C CA 2058282C CA 002058282 A CA002058282 A CA 002058282A CA 2058282 A CA2058282 A CA 2058282A CA 2058282 C CA2058282 C CA 2058282C
- Authority
- CA
- Canada
- Prior art keywords
- slag
- discharge
- water
- discharge chute
- chute
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/02—Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/01021—Removing ashes from the ash pit using reciprocating means, e.g. pushers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Water is extracted from slag that has been quenched in the water bath of a deslagger and expelled from the water bath by means of a discharge ram through a discharge chute, by causing the discharge chute of the deslagger to vibrate. A vibration generator, in particular an unbalance-type generator, is attached to the discharge chute for this purpose.
Description
The present invention relates to a process for removing the water from slag that has been quenched in the water bath of a deslagger, this slag being removed from the water bath through a discharge shoot by means of a discharge ram. The present invention also relates to an apparatus for carrying out the process.
In furnaces, the fuel that has been burned moves through a slag shaft into a deslagger that is filled with water and which incorporates a discharge chute that is curved in an arc shape and a discharge ram that can move back and forth and which moves slag that has been quenched in the water bath from said water bath to the outside through the upwardly inclined discharge chute (see, for example, DE-OS 25 39 615).
Because the slag is quenched with water it is, of necessity, completely saturated with water which causes problems with regard to its disposal or if it is to be subjected to further processing. One of the problems lies in the fact that the water that adheres to the slag is in part released during subsequent transportation. This can lead to the undesirable escape of water from the means of transport and, because of the fact that this water contains harmful substances, it can contribute to environmental pollution or to pollution of the ground water.
Another significant problem lies in the fact that because of the water that it contains, the slag is correspondingly heavier, which leads to a considerable lncrease in transportation and dumping costs.
It is the task of the present invention to permit the extensive removal of water from slag that originates from a furnace and to do this in the simplest possible manner without any additional cost-lntenslve plant.
As embodied and broadly described herein, the invention provldes a process for removing water from slag quenched ln a water bath of a deslagger compris~ng the steps of pushing the slag out of the water bath onto a dlscharge chute using a discharge ram; vibratlon part of the discharge chute pro~ecting out of the water bath; and, repeating said pushing and vibration steps, the water being squeezed and vibrated from the slag on sald dlscharge chute.
As embodied and broadly described herein, the invention further provides an apparatus for extractlng water from slag that has been quenched in a water bath of a slag discharger comprlslng: a discharge ram for expelling the slag from said water bath; a dlscharge chute positioned external to said water bath, sald discharging chute for receiving the slag expelled by said discharge ram; a vibratlon generator attached to said discharge chute for vibrating sald dlscharge chute, the slag on said dlscharge chute being compressed by extenslon of said discharge ram in combination with vibration of sald discharge chute and being loosened by the vibration during retraction of the dlscharge ram.
r~
- ~ 58 ~
2a the discharge ram.
Proceedlng from the process of the type described in the introduction hereto, according to the present invention this task has been solved in that the discharge chute of the deslagger is caused to vibrate. Particularly good results are achieved if, in a further development of the present inventlon, the area of the dlscharge chute that ls free of water ls caused to vlbrate. ~ecause of the generatlon of thls vibratlon, whlch ls transferred from the dlscharge chute to the slag that ls withln the chute, a large quantlty of water ls extracted from the slag which, after processing accordlng to the present invention, has a water content of approximately 12%, whereas slag that leaves the deslagger without belng processed according to the present inventlon has a water content of approxlmately 18 to 22%. This means that a conslderable quantlty of water has been extracted, which greatly reduces the consumption of fresh water or additional process water. The slag that is obtained after thls process feels llke damp earth and has no more drops of water adherlng to lt.
20~8282 In order to carry out this process, it is sufficient if, according to the present invention, a vibration generator, in particular an unbalance-type generator, is installed on the discharge chute. This leads to a particularly simple system for carrying out the process for, apart from the installation of the vibration generator, no modifications need be made to the existing deslagger, so that the existing deslagger can be retrofitted in a particularly simple manner.
It has been shown to be advantageous if the vibration generator, particularly an unbalance-type generator, is installed on the bottom of the discharge chute.
The best results with respect to extracting the water have been achieved in that the vibrating generator, in particular an unbalance-type generator, is installed at the border between that section of the discharge chute that is filled with water and the section of the discharge chute that contains no water, and is connected to this.
The present invention will be described in greater detail below on the basis of an embodiment shown in the drawings appended hereto. These drawings, which consist of a single figure, show a partial longitudinal section through a deslagger.
The slag that originates in a fire grate (not shown herein) falls into the slag drop shaft 2 of a deslagger 1. The slag drop shaft 2 opens out into a curved pan 3, on the bottom 4 of which a discharge ram 5 can move back and forth. During each ~troke, the discharge ram 5 moves the slag that is resting on the bottom 4 into the discharge chute 6, from which the slag finally moves into the open.
At its rear end, the discharge ram 5 is articulated onto one or a plurality of cranks 7 that are rigidly attached to a shaft 8 which, in its turn, is connected to a drive system (not shown herein).
The discharge ram 5 incorporates a face surface 9 that is essentially perpendicular to the bottom surface 4 of the base pan 3 and serves to expel the slag. In the embodiment shown, the discharge ram 5 incorporates a step 10 that exerts an additional discharge effect.
The front upper area of the discharge chute 6 is defined by a rounded edge 11 that extends into the water bath that is located in the curved pan 3 in order to ensure an air-tight fit of the slag drop shaft, because there is a negative pressure in the furnace fire box. The water level is numbered 12.
205828~
The slag that is quenched in the water bath within the curved pan 3 is pushed into the discharge chute 6 that rises obliquely by the face surface 9 of the ram and by the additional step 10, where it emerges from the surface of the water as a compact mass.
At this point, water that is adhering to the outside of the slag can flow back into the water bath.
In order to achieve a particularly high level of extraction of the water from the slag that emerges from the discharge chute 6, on the bottom of th~ discharge chute there is a vibration generator in the form of an unbalanced-type generator 13, and this supports a weight 15 on a driven shaft 14; this causes the whole of the discharge chute to vibrate. These vibrations are transferred to the slag and to the water that is adhering to the slag, and this causes the extraction of a large quantity of water from the slag. When this occurs, the water that has been extracted flows back into the water bath so that, a~art ~o~ t~
installation of a vibration generator, no other modifications need be undertaken and no additional systems have to be installed. In the preferred embodiment that is shown, the vibration generator 13 is rigidly attached at the border, numbered 16, between the water-filled portion 17 and the water-free section 18 of the discharge chute, to the bottom 19 of the discharge chute, so that the vibrations are transferred to the whole of the discharge chute and thus to the slag.
In furnaces, the fuel that has been burned moves through a slag shaft into a deslagger that is filled with water and which incorporates a discharge chute that is curved in an arc shape and a discharge ram that can move back and forth and which moves slag that has been quenched in the water bath from said water bath to the outside through the upwardly inclined discharge chute (see, for example, DE-OS 25 39 615).
Because the slag is quenched with water it is, of necessity, completely saturated with water which causes problems with regard to its disposal or if it is to be subjected to further processing. One of the problems lies in the fact that the water that adheres to the slag is in part released during subsequent transportation. This can lead to the undesirable escape of water from the means of transport and, because of the fact that this water contains harmful substances, it can contribute to environmental pollution or to pollution of the ground water.
Another significant problem lies in the fact that because of the water that it contains, the slag is correspondingly heavier, which leads to a considerable lncrease in transportation and dumping costs.
It is the task of the present invention to permit the extensive removal of water from slag that originates from a furnace and to do this in the simplest possible manner without any additional cost-lntenslve plant.
As embodied and broadly described herein, the invention provldes a process for removing water from slag quenched ln a water bath of a deslagger compris~ng the steps of pushing the slag out of the water bath onto a dlscharge chute using a discharge ram; vibratlon part of the discharge chute pro~ecting out of the water bath; and, repeating said pushing and vibration steps, the water being squeezed and vibrated from the slag on sald dlscharge chute.
As embodied and broadly described herein, the invention further provides an apparatus for extractlng water from slag that has been quenched in a water bath of a slag discharger comprlslng: a discharge ram for expelling the slag from said water bath; a dlscharge chute positioned external to said water bath, sald discharging chute for receiving the slag expelled by said discharge ram; a vibratlon generator attached to said discharge chute for vibrating sald dlscharge chute, the slag on said dlscharge chute being compressed by extenslon of said discharge ram in combination with vibration of sald discharge chute and being loosened by the vibration during retraction of the dlscharge ram.
r~
- ~ 58 ~
2a the discharge ram.
Proceedlng from the process of the type described in the introduction hereto, according to the present invention this task has been solved in that the discharge chute of the deslagger is caused to vibrate. Particularly good results are achieved if, in a further development of the present inventlon, the area of the dlscharge chute that ls free of water ls caused to vlbrate. ~ecause of the generatlon of thls vibratlon, whlch ls transferred from the dlscharge chute to the slag that ls withln the chute, a large quantlty of water ls extracted from the slag which, after processing accordlng to the present invention, has a water content of approximately 12%, whereas slag that leaves the deslagger without belng processed according to the present inventlon has a water content of approxlmately 18 to 22%. This means that a conslderable quantlty of water has been extracted, which greatly reduces the consumption of fresh water or additional process water. The slag that is obtained after thls process feels llke damp earth and has no more drops of water adherlng to lt.
20~8282 In order to carry out this process, it is sufficient if, according to the present invention, a vibration generator, in particular an unbalance-type generator, is installed on the discharge chute. This leads to a particularly simple system for carrying out the process for, apart from the installation of the vibration generator, no modifications need be made to the existing deslagger, so that the existing deslagger can be retrofitted in a particularly simple manner.
It has been shown to be advantageous if the vibration generator, particularly an unbalance-type generator, is installed on the bottom of the discharge chute.
The best results with respect to extracting the water have been achieved in that the vibrating generator, in particular an unbalance-type generator, is installed at the border between that section of the discharge chute that is filled with water and the section of the discharge chute that contains no water, and is connected to this.
The present invention will be described in greater detail below on the basis of an embodiment shown in the drawings appended hereto. These drawings, which consist of a single figure, show a partial longitudinal section through a deslagger.
The slag that originates in a fire grate (not shown herein) falls into the slag drop shaft 2 of a deslagger 1. The slag drop shaft 2 opens out into a curved pan 3, on the bottom 4 of which a discharge ram 5 can move back and forth. During each ~troke, the discharge ram 5 moves the slag that is resting on the bottom 4 into the discharge chute 6, from which the slag finally moves into the open.
At its rear end, the discharge ram 5 is articulated onto one or a plurality of cranks 7 that are rigidly attached to a shaft 8 which, in its turn, is connected to a drive system (not shown herein).
The discharge ram 5 incorporates a face surface 9 that is essentially perpendicular to the bottom surface 4 of the base pan 3 and serves to expel the slag. In the embodiment shown, the discharge ram 5 incorporates a step 10 that exerts an additional discharge effect.
The front upper area of the discharge chute 6 is defined by a rounded edge 11 that extends into the water bath that is located in the curved pan 3 in order to ensure an air-tight fit of the slag drop shaft, because there is a negative pressure in the furnace fire box. The water level is numbered 12.
205828~
The slag that is quenched in the water bath within the curved pan 3 is pushed into the discharge chute 6 that rises obliquely by the face surface 9 of the ram and by the additional step 10, where it emerges from the surface of the water as a compact mass.
At this point, water that is adhering to the outside of the slag can flow back into the water bath.
In order to achieve a particularly high level of extraction of the water from the slag that emerges from the discharge chute 6, on the bottom of th~ discharge chute there is a vibration generator in the form of an unbalanced-type generator 13, and this supports a weight 15 on a driven shaft 14; this causes the whole of the discharge chute to vibrate. These vibrations are transferred to the slag and to the water that is adhering to the slag, and this causes the extraction of a large quantity of water from the slag. When this occurs, the water that has been extracted flows back into the water bath so that, a~art ~o~ t~
installation of a vibration generator, no other modifications need be undertaken and no additional systems have to be installed. In the preferred embodiment that is shown, the vibration generator 13 is rigidly attached at the border, numbered 16, between the water-filled portion 17 and the water-free section 18 of the discharge chute, to the bottom 19 of the discharge chute, so that the vibrations are transferred to the whole of the discharge chute and thus to the slag.
Claims (8)
1. A process for removing water from slag quenched in a water bath of a deslagger comprising the steps of:
pushing the slag out of the water bath onto a discharge chute using a discharge ram;
vibration part of the discharge chute projecting out of the water bath; and, repeating said pushing and vibration steps, the water being squeezed and vibrated from the slag on said discharge chute.
pushing the slag out of the water bath onto a discharge chute using a discharge ram;
vibration part of the discharge chute projecting out of the water bath; and, repeating said pushing and vibration steps, the water being squeezed and vibrated from the slag on said discharge chute.
2. The process of claim 1, wherein water is squeezed from the slag during extrusion of the discharge ram and vibrated from the ash during retraction of the discharge ram.
3. The process of claim 1, wherein said slag on said discharge chute is compressed by the extrusion of the discharge ram in combination with vibration of said part of the discharge chute and loosened by the vibration during the retraction of the discharge ram.
4. The process of any one of claims 1 to 3, further comprising the step of returning the water removed from the slag to said water bath.
5. An apparatus for extracting water from slag that has been quenched in a water bath of a slag discharger comprising:
a discharge ram for expelling the slag from said water bath;
a discharge chute positioned external to said water bath, said discharging chute for receiving the slag expelled by said discharge ram;
a vibration generator attached to said discharge chute for vibrating said discharge chute, the slag on said discharge chute being compressed by extension of said discharge ram in combination with vibration of said discharge chute and being loosened by the vibration during retraction of the discharge ram.
a discharge ram for expelling the slag from said water bath;
a discharge chute positioned external to said water bath, said discharging chute for receiving the slag expelled by said discharge ram;
a vibration generator attached to said discharge chute for vibrating said discharge chute, the slag on said discharge chute being compressed by extension of said discharge ram in combination with vibration of said discharge chute and being loosened by the vibration during retraction of the discharge ram.
6. The apparatus of claim 5, wherein said vibration generator is an unbalanced vibration generator.
7. The apparatus of claim 5 or 6, wherein said vibration generator is mounted beneath said discharge chute.
8. The apparatus of any one of claims 5 to 7, wherein said discharge chute is inclined to return the water removed from the slag to said water bath.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4041381A DE4041381C1 (en) | 1990-12-21 | 1990-12-21 | Slag dewatering chute - has water acting as pusher with fitted disbalancing generator |
| DEP4041381.0 | 1990-12-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2058282A1 CA2058282A1 (en) | 1992-06-22 |
| CA2058282C true CA2058282C (en) | 1998-08-25 |
Family
ID=6421167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002058282A Expired - Lifetime CA2058282C (en) | 1990-12-21 | 1991-12-20 | Process and an apparatus for removing water from slag |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0492541B1 (en) |
| JP (1) | JP2581629B2 (en) |
| AT (1) | ATE106526T1 (en) |
| BR (1) | BR9105439A (en) |
| CA (1) | CA2058282C (en) |
| DE (2) | DE4041381C1 (en) |
| DK (1) | DK0492541T3 (en) |
| ES (1) | ES2056559T3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2721992A1 (en) * | 1994-07-01 | 1996-01-05 | Rech Dev Indls | Method of cooling shredded domestic refuse from incinerator |
| DE19830943B4 (en) * | 1998-07-10 | 2010-09-09 | Hitachi Power Europe Gmbh | Process for dewatering ash |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2031988A1 (en) * | 1970-06-29 | 1972-01-05 | Deutsche Babcock & Wilcox Ag, 4200 Oberhausen | Plate conveyor for wet slag |
| FR2323102A1 (en) * | 1975-09-05 | 1977-04-01 | Martin Johannes Josef | WASTE EVACUATION DEVICE FOR LARGE FIREPLACES |
| JPS5926993B2 (en) * | 1976-06-30 | 1984-07-02 | 松下電工株式会社 | Evacuation guidance method |
| JPS5995198A (en) * | 1982-11-24 | 1984-06-01 | 株式会社 尾「さこ」製作所 | Monitor device for stacked folded section in intermediate binder |
| US4843732A (en) * | 1987-12-29 | 1989-07-04 | The Cardwell Machine Company | Vibratory and gas levitation particle treatment system |
-
1990
- 1990-12-21 DE DE4041381A patent/DE4041381C1/en not_active Expired - Fee Related
-
1991
- 1991-12-12 JP JP3327941A patent/JP2581629B2/en not_active Expired - Fee Related
- 1991-12-13 BR BR919105439A patent/BR9105439A/en not_active IP Right Cessation
- 1991-12-20 ES ES91122011T patent/ES2056559T3/en not_active Expired - Lifetime
- 1991-12-20 AT AT91122011T patent/ATE106526T1/en not_active IP Right Cessation
- 1991-12-20 CA CA002058282A patent/CA2058282C/en not_active Expired - Lifetime
- 1991-12-20 DE DE59101799T patent/DE59101799D1/en not_active Expired - Lifetime
- 1991-12-20 DK DK91122011.9T patent/DK0492541T3/en active
- 1991-12-20 EP EP91122011A patent/EP0492541B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BR9105439A (en) | 1992-08-25 |
| CA2058282A1 (en) | 1992-06-22 |
| ATE106526T1 (en) | 1994-06-15 |
| JPH04267911A (en) | 1992-09-24 |
| EP0492541A2 (en) | 1992-07-01 |
| DE4041381C1 (en) | 1992-01-09 |
| JP2581629B2 (en) | 1997-02-12 |
| DE59101799D1 (en) | 1994-07-07 |
| EP0492541B1 (en) | 1994-06-01 |
| EP0492541A3 (en) | 1992-12-16 |
| DK0492541T3 (en) | 1994-09-26 |
| ES2056559T3 (en) | 1994-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5331746A (en) | Process and an apparatus for removing water from ash | |
| US3842762A (en) | Apparatus for disposing of solid wastes | |
| CN211026514U (en) | Mining is ore collection breaker for engineering | |
| CN114769289B (en) | Purification equipment for industrial solid waste | |
| US2037990A (en) | Ash removing mechanism | |
| CA2058282C (en) | Process and an apparatus for removing water from slag | |
| CN109853682A (en) | A kind of kitchen garbage treater preventing line clogging | |
| CN208516267U (en) | A kind of new and effective bucket elevator | |
| CN117490073B (en) | Refuse incinerator | |
| CN109629646A (en) | A kind of kitchen garbage treater being convenient to clean rubbish | |
| CN218936355U (en) | Household garbage pyrolysis gasification device | |
| KR100525357B1 (en) | Apparatus for washing aggregate for use in a recycling system of waste materials | |
| US4039433A (en) | Process and apparatus for recovering metal from soil | |
| CN217432588U (en) | Solid-liquid separation garbage disposal device | |
| CN110125144A (en) | A kind of residue treatment plant after environmental debris power generation | |
| CN216297481U (en) | Refuse incineration residue's processing apparatus that becomes more meticulous | |
| CN212841611U (en) | Domestic garbage treatment device | |
| CA1133764A (en) | Pulverizer rejects disposal | |
| CN109084529A (en) | A kind of tea drier preheating auxiliary feeding apparatus | |
| CN210080205U (en) | Dust device for ore dressing and feeding | |
| CN109990300B (en) | Incinerator | |
| JPS602082Y2 (en) | Garbage compression storage discharge device | |
| CN213254773U (en) | High-efficient breaker of building rubbish | |
| CN209188953U (en) | A kind of fishing net clout circulating collection processing system | |
| CN218078896U (en) | A classified screening device for breaker discharge gate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |