EP0343170B1 - Dry ash handling system for an incinerator - Google Patents
Dry ash handling system for an incinerator Download PDFInfo
- Publication number
- EP0343170B1 EP0343170B1 EP19880900926 EP88900926A EP0343170B1 EP 0343170 B1 EP0343170 B1 EP 0343170B1 EP 19880900926 EP19880900926 EP 19880900926 EP 88900926 A EP88900926 A EP 88900926A EP 0343170 B1 EP0343170 B1 EP 0343170B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ash
- car
- chambers
- tunnel
- handling system
- 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
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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
Definitions
- the present invention is directed to a dry ash handling system for a municipal waste incinerator that cools ash to room temperature for easy handling and, more particularly, to a system that collects ash in a car in a sealed tunnel, allows maximum burn-out of the waste to occur and water-spray cools the ash to a safe handling temperature while in the sealed tunnel before transporting the sealed car to a landfill.
- Municipal solid waste incineration systems such as illustrated in Fig. 1, burn waste dumped in chute 10 in a rotary combustor 12 such as an O'Connor combustor described in detail in U.S. Patent Nos. 3,822,651 and 4,066,024. Part of the burned waste leaves the O'Connor combustor as fly ash which travels up an after burner/gas cleaning chamber 14 and is collected in a fly ash collection system. Bottom ash, including partially burned embers, fall out of the combustor 12 into an ash burning and collection hopper 16 which includes a water cooled stairway grate 18 that allows large embers more time to complete burn-out as they roll down the stairway 18.
- the stairway 18 includes air injection ports which force air against the large embers and attempts to complete burn-out by holding the larger pieces in the chamber 14 for an additional time.
- the ashes then fall into a quenching tank 20 which includes a conveyor 22 which carries the wet ash to an ash car 24.
- the water serves two functions: 1) it quenches the sometimes still smoldering ash, and 2) it forms an air seal between the ash pit and the combustor 12 which operates at a slightly negative pressure.
- Incineration systems that include a conveyor 22 are frequently taken out of service because large objects get caught in the drag conveyor flights, breaking a drag chain, causing the conveyor 22 to grind to a halt.
- the system in such a situation, will be out of service for at least eight hours, the time required to cool down and then reheat the combustor 12.
- Dry ash handling systems have been produced that replace the water tank 20 and stairway 18 with a slowly moving conveyor at the bottom of the combustor 12.
- the conveyor is located approximately four feet from the bottom edge of the combustor 12 and moves at a rate which allows approximately one foot of dry ash to be deposited on the conveyor.
- the conveyor is a grate type conveyor that allows air to be injected into the ash in an attempt to complete combustion of larger embers.
- considerable dusting and scattering of the ash occurs in such systems and at times burn-out of the ash is incomplete, resulting in smoldering ash being carried to the landfill.
- a dry ash handling system which protects operating personnel and the environment from exposure to combustor ash
- a dry ash handling system with a positive combustor seal to provide an ash handling system that allows maximum ash burn-out
- a system which will cool the ash to a safe handling temperature before transport to a landfill to provide a system which segregates batches of ash until analyzed and released for transport.
- a dry ash handling system that allows ash to fall into a refractory lined ash car in a sealed tunnel. Any unburned waste is allowed to continue burning while in the car and until sprayed to quench any remaining smoldering embers and bring the moisture content up to an acceptable level.
- the car After removal from the sealed tunnel, the car is sealed with a lid and allowed to cool further before being sampled, tested and transported to a landfill by a tilt bed truck. At the landfill, a hinged door in the car allows the ash to be dumped.
- bottom ash falls from a combustor 22 through a bifurcated chute 30 and is diverted by a mechanically operated ash diverter gate 32 into one of two sealed ash tunnels 34 and 36.
- Each tunnel is approximately 18 meters long, 3 meters high and 3 meters wide.
- Three similar ash cars 40, 42 and 44 are positioned in each tunnel and one ash car 46 is shown outside each tunnel 34 or 36.
- Ash car 40 is waiting to be filled, car 42 is being filled with ash from the combustor 12 while car 44 is completing burn-out and being water-cooled by atomizer spray nozzles 48. 1.5 liters/second of water for one hour is necessary to cool the ash from 650°C to 21°C if no cooling outside the tunnel is allowed.
- Car 46 is being sealed with lid 50 before being transported to a landfill by a tilt bed truck 210.
- car 42 If the car 42 is 2.5 meters by 2.5 meters by 6 meters it will hold approximately 25 tons of ash and can be filled in approximately 4 hours by a 254cm diameter O'Connor combustor.
- load cell 52 detect that car 42 is full, ash gate 32 pivots to allow ash to fall into tunnel 34, doors 54 and 56 on both ends of the tunnel are opened, allowing a tow motor type vehicle to push a car through the open door 54 at the same time shoving car 44 out door opening 56.
- the burn-out chamber can also include a chute for fly ash so that it can be commingled with the bottom ash.
- the air for continued combustion enters a steel pipe 70 which extends from the car 40, as illustrated in Fig. 4.
- the pipe is 15 cm in diameter and includes air holes 72 located near the bottom of the pipe at a 30° angle which allows air to infiltrate the ash without clogging the air holes 72.
- An air flow rate through holes 72 of approximately ten percent of combustion air is sufficient to maximize burn-out and the holes 72 should be sized accordingly. Additional pipes 70 or holes 72 can be added if faster burn-out is desired. It is also possible to provide sloped sides in car 40 which may improve burn-out speed.
- the cars 40-46 include notched wheels 74 that ride on 5 cm x 5 cm angle iron track 76 while in the tunnel 36.
- Fig. 6 illustrates the construction of a wheel 74 and track 76 in greater detail.
- the angle iron track 76 is welded to a deck plate 78 of the tunnel and carries a notched wheel 74.
- the notch 78 in the wheel 74 matches the shape of track 76.
- the flat surface of the wheel 74 allows the wheel 74 to roll on flat surfaces.
- the wheel 74 includes a carbon steel notched rolling surface 80 and a bronze press fit dry bearing 82.
- the rear of the car 42 includes a swinging door 90 such as a dump truck door, rotating about bar hinge 92, as illustrated in Fig. 7.
- the edge of the door 90 and lip of the car 40 include a fiber frax gasket 94.
- the gasket 94 prevents ash from migrating around the door 90.
- the door 90 is held shut by several over-the-center dump truck latches 96 which provide a tight fit between the door 90 and car 40.
- Each car 40 includes a top flange 98 which has a fiber frax gasket 100 attached to the top edge around the perimeter.
- the chute 30 also has a fiber frax gasket 102 which mates with the gasket 100 of each car 42 when the car 42 is positioned under the chute 30.
- the gaskets 100 and 102 when the car is in position prevent dust from billowing out of the car 42 as it is being filled.
- the plant operator can obtain ash samples through porthole type sampling ports 110, illustrated in Fig. 8, spaced at periodic intervals on the side of the car.
- the sampling ports 110 include a cap 112 rotating on a bar hinge 114 and clamped in place by a latch 116.
- a sample thief identical to those used in grain storage elevators to sample grain from the interior of the elevator is inserted through the open sampling port 110 to obtain a sample for testing ash content to ensure that all the waste has been burned, including the complete combustion of hazardous chemicals.
- the interior wall 118 of the car 46 is lined with a cast refractory material, while the outer wall 120 is plate steel approximately 6 mm thick. The refractory lining 118 is provided because ash is typically deposited in the car at approximately 760°C.
- the pipe 70 which extends through the end of the car opposite the hinged door 90 mates with door louver 58 using fiber frax gaskets 130 and 132, as illustrated in Fig. 9.
- the interior of the pipe is exposed to the openings in louver 58 which can be manually opened and closed to control airflow into the car 44. If mating between the louver 58 and pipe 70 becomes a problem because of inadequate movement by car 44 toward door 56, the louver 58 can be provided with a telescopic type extension.
- the lid 50 illustrated in detail in Fig. 10, seals the car 46 for transportation to a landfill and includes a C-clamp 140 which clamps the lid 50 to the car 46 compressing fiber frax seal 100 and 142 together.
- the fiber frax seal 142 is attached to the edge of the lid 50 which is constructed of a 3 mm steel plate 144 and a 25 mm sheet 146 of plywood glued to the plate 144.
- the plywood provides rigidity at low weight, while the steel provides heat resistance.
- the tunnel doors 54 and 56 are sliding doors which slide within a frame 150 which extends above the tunnel 36, as illustrated in Figs. 11 and 12. Plate steel 6 mm thick with angle iron reinforcements will provide a suitable door.
- the door is lifted by a reversible motor 152 of at least horsepower and a cable 154 that runs over a pulley 156.
- a limit switch 158 ensures that the door 54 is not raised past a point where it will be damaged.
- a dust seal for the bottom of each door fits over the tracks 76, against the tunnel bottom 170 and is constructed of a steel pad 172 and a fiber frax gasket 174, as illustrated in Figs. 13 and 14.
- the top of each door is sealed with another pair of fiber frax gaskets 176 and 178, as illustrated in Fig. 15.
- One of the gaskets 176 is mounted on the door and the other gasket 178 is mounted on a 2.5 cm x 2.5 cm angle iron 180 welded to the top of the tunnel 36.
- the door because of the negative pressure in the tunnel 36 created by combustor 12, will be pulled toward the tunnel 36, helping to create a dust- tight seal.
- an inflatable door gasket 182 located along the sides of frame 150, pushes the door against a fiber frax gasket 184, as illustrated in Fig. 16.
- An appropriate inflatable gasket can be obtained from Sealmaster Corp. of Kent, Ohio.
- the weighing system for weighing the ash in car 42 to determine when a new car should be moved under chute 30 is illustrated in Fig. 17.
- the load cell 52 includes a substantially non-compressible load measuring device such as a piezoelectric sensor load cell, which supports the ends of two rail segments 190 and 192.
- the ends of the rail segments 190 and 192 supported by the load cells include a very small gap 194 between the rails which allows the rails to freely move.
- the other ends of the rail segments are substantially fixed in place. Only one of the rails in the weighing section under the car 42 includes a load cell, the other rail being a solid rail.
- a telescoping gantry crane 200 that has an electromagnetic lifting device 202 obtains a lid 50 from a stack 204 and moves it onto the exiting car 46.
- the telescoping gantry crane 200 lifts the lid 50 off of the car 206 after the C-clamps 140 holding the lid 50 on the car 206 have been removed.
- each car is pivoting wheels to allow the car to be turned as it is moved about on a concrete pad surrounding the tunnels 34 and 36 by a tow motor type vehicle.
- the tow motor will also align the car 46 with the rails 76 of the tunnels 34 and 36.
- a car 46 which is full, is loaded onto a truck 210 by the pushing action of the tow motor.
- the truck 210 can be based on a highway coal carrying dump truck which includes a tilting hydraulically operated bed 212.
- the car 46 is strapped to the truck bed using dump truck latches or truck chain tighteners 214. When the truck 210 arrives at the landfill, the latches 96 are released from the rear door 90 and the bed 212 is tilted, dumping the contents of the car 46.
- a single tunnel 218 can be provided if isolation chambers 220 and 222 are provided, as illustrated in Fig. 20.
- the entrance isolation chamber includes an external door 224 and an internal door 226 which cannot be opened simultaneously.
- the outgoing isolation chamber 222 also includes doors 228 and 230 that cannot be opened simultaneously.
- door 226 is opened and the car is pulled into the tunnel by the drive mechanism forcing a car into burn-out and cooling chamber 232 through the open door 228 into the outgoing chamber 222.
- a car Once a car is in isolation chamber 222 it can be removed by a tow motor after door 228 is closed and door 230 is opened.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
- The present invention is directed to a dry ash handling system for a municipal waste incinerator that cools ash to room temperature for easy handling and, more particularly, to a system that collects ash in a car in a sealed tunnel, allows maximum burn-out of the waste to occur and water-spray cools the ash to a safe handling temperature while in the sealed tunnel before transporting the sealed car to a landfill.
- Municipal solid waste incineration systems such as illustrated in Fig. 1, burn waste dumped in
chute 10 in arotary combustor 12 such as an O'Connor combustor described in detail in U.S. Patent Nos. 3,822,651 and 4,066,024. Part of the burned waste leaves the O'Connor combustor as fly ash which travels up an after burner/gas cleaning chamber 14 and is collected in a fly ash collection system. Bottom ash, including partially burned embers, fall out of thecombustor 12 into an ash burning and collection hopper 16 which includes a water cooled stairway grate 18 that allows large embers more time to complete burn-out as they roll down the stairway 18. The stairway 18 includes air injection ports which force air against the large embers and attempts to complete burn-out by holding the larger pieces in thechamber 14 for an additional time. The ashes then fall into aquenching tank 20 which includes aconveyor 22 which carries the wet ash to anash car 24. The water serves two functions: 1) it quenches the sometimes still smoldering ash, and 2) it forms an air seal between the ash pit and thecombustor 12 which operates at a slightly negative pressure. Incineration systems that include aconveyor 22 are frequently taken out of service because large objects get caught in the drag conveyor flights, breaking a drag chain, causing theconveyor 22 to grind to a halt. The system, in such a situation, will be out of service for at least eight hours, the time required to cool down and then reheat thecombustor 12. The water fromtank 12, before discharge back into the environment, must be treated. Thefull ash car 24, loaded with wet ash, is carried to a landfill and emptied. Since waste carriers charge by the point for disposal, the wet ash is much more expensive to discard than would be the ash if it were dry. - Dry ash handling systems have been produced that replace the
water tank 20 and stairway 18 with a slowly moving conveyor at the bottom of thecombustor 12. The conveyor is located approximately four feet from the bottom edge of thecombustor 12 and moves at a rate which allows approximately one foot of dry ash to be deposited on the conveyor. The conveyor is a grate type conveyor that allows air to be injected into the ash in an attempt to complete combustion of larger embers. However, considerable dusting and scattering of the ash occurs in such systems and at times burn-out of the ash is incomplete, resulting in smoldering ash being carried to the landfill. - Among the objects of the present invention are to provide a dry ash handling system which protects operating personnel and the environment from exposure to combustor ash, to provide a dry ash handling system with a positive combustor seal, to provide an ash handling system that allows maximum ash burn-out, to provide a system which will cool the ash to a safe handling temperature before transport to a landfill, and to provide a system which segregates batches of ash until analyzed and released for transport.
- The above objects can be attained by a dry ash handling system according to claim 1 that allows ash to fall into a refractory lined ash car in a sealed tunnel. Any unburned waste is allowed to continue burning while in the car and until sprayed to quench any remaining smoldering embers and bring the moisture content up to an acceptable level. After removal from the sealed tunnel, the car is sealed with a lid and allowed to cool further before being sampled, tested and transported to a landfill by a tilt bed truck. At the landfill, a hinged door in the car allows the ash to be dumped.
- These, together with other objects and advantages which will be subsequently apparent, reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout.
- Fig. 1 depicts a municipal waste incinerator with a prior art wet ash handling system;
- Fig. 2 is a cross-sectional view of a dry ash handling system according to the present invention;
- Fig. 3 is a side view of the system of Fig. 2;
- Figs. 4 and 5 are side and end views of a
car 40; - Fig. 6 is a detailed view of a
car wheel 74 andtunnel track 76; - Fig. 7 illustrates sealing details of a
car 42; - Fig. 8 depicts the details of a
sample port 110; - Fig. 9 shows an
air infusion pipe 70 andexit door louvers 58; - Fig. 10 illustrates a
lid 50 being clamped to acar 46; - Figs. 11 and 12 illustrate tunnel door 54 sliding mechanisms;
- Figs. 13 and 14 are views of a
tunnel door 54 bottom seal; - Fig. 15 is a side view of a
tunnel door 54 top seal; - Fig. 16 is a top view of a
tunnel door 54 side seal; - Fig. 17 illustrates the arrangement for weighing a
car 42; - Fig. 18 shows a
crane 200 for movingcar lids 204; - Fig. 19 illustrates a truck 21 with a tilting
bed 212 for emptying acar 46; and - Fig. 20 is a side view of an alternate tunnel embodiment.
- Referring now to the drawings in detail and in particular, to Figure 2, bottom ash falls from a
combustor 22 through a bifurcatedchute 30 and is diverted by a mechanically operatedash diverter gate 32 into one of two sealedash tunnels similar ash cars ash car 46 is shown outside eachtunnel car 40 is waiting to be filled,car 42 is being filled with ash from thecombustor 12 whilecar 44 is completing burn-out and being water-cooled byatomizer spray nozzles 48. 1.5 liters/second of water for one hour is necessary to cool the ash from 650°C to 21°C if no cooling outside the tunnel is allowed.Car 46 is being sealed withlid 50 before being transported to a landfill by atilt bed truck 210. - If the
car 42 is 2.5 meters by 2.5 meters by 6 meters it will hold approximately 25 tons of ash and can be filled in approximately 4 hours by a 254cm diameter O'Connor combustor. Whenload cell 52 detect thatcar 42 is full,ash gate 32 pivots to allow ash to fall intotunnel 34,doors open door 54 at the sametime shoving car 44 out door opening 56. - When the
doors car 44 throughlouvers 58 indoor 56. The air passes up through the ash and into thechute 30 throughlouvers 60 due to the -.00123 atmospheres pressure caused bycombustor 12 inchute 30, allowing the ash incar 44 to continue to burn. Since it takes approximately 4 hours for a single car to be filled, with dual tunnels, the burn-out period can be approximately 7 hours, more than sufficient to allow combustion of unburned embers. The burn-out chamber can also include a chute for fly ash so that it can be commingled with the bottom ash. - The air for continued combustion enters a
steel pipe 70 which extends from thecar 40, as illustrated in Fig. 4. The pipe is 15 cm in diameter and includesair holes 72 located near the bottom of the pipe at a 30° angle which allows air to infiltrate the ash without clogging theair holes 72. An air flow rate throughholes 72 of approximately ten percent of combustion air is sufficient to maximize burn-out and theholes 72 should be sized accordingly.Additional pipes 70 orholes 72 can be added if faster burn-out is desired. It is also possible to provide sloped sides incar 40 which may improve burn-out speed. - The cars 40-46 include
notched wheels 74 that ride on 5 cm x 5 cmangle iron track 76 while in thetunnel 36. Fig. 6 illustrates the construction of awheel 74 andtrack 76 in greater detail. Theangle iron track 76 is welded to adeck plate 78 of the tunnel and carries anotched wheel 74. Thenotch 78 in thewheel 74 matches the shape oftrack 76. The flat surface of thewheel 74 allows thewheel 74 to roll on flat surfaces. Thewheel 74 includes a carbon steel notchedrolling surface 80 and a bronze press fit dry bearing 82. - The rear of the
car 42 includes a swingingdoor 90 such as a dump truck door, rotating aboutbar hinge 92, as illustrated in Fig. 7. The edge of thedoor 90 and lip of thecar 40 include afiber frax gasket 94. Thegasket 94 prevents ash from migrating around thedoor 90. Thedoor 90 is held shut by several over-the-center dump truck latches 96 which provide a tight fit between thedoor 90 andcar 40. Eachcar 40 includes atop flange 98 which has afiber frax gasket 100 attached to the top edge around the perimeter. Thechute 30 also has afiber frax gasket 102 which mates with thegasket 100 of eachcar 42 when thecar 42 is positioned under thechute 30. Thegaskets car 42 as it is being filled. - After a filled
car 46 has been moved outside thetunnel 36 and thelid 50 attached, the plant operator can obtain ash samples through portholetype sampling ports 110, illustrated in Fig. 8, spaced at periodic intervals on the side of the car. Thesampling ports 110 include acap 112 rotating on abar hinge 114 and clamped in place by alatch 116. A sample thief identical to those used in grain storage elevators to sample grain from the interior of the elevator is inserted through theopen sampling port 110 to obtain a sample for testing ash content to ensure that all the waste has been burned, including the complete combustion of hazardous chemicals. Theinterior wall 118 of thecar 46 is lined with a cast refractory material, while theouter wall 120 is plate steel approximately 6 mm thick. Therefractory lining 118 is provided because ash is typically deposited in the car at approximately 760°C. - The
pipe 70 which extends through the end of the car opposite the hingeddoor 90 mates withdoor louver 58 usingfiber frax gaskets louver 58 which can be manually opened and closed to control airflow into thecar 44. If mating between thelouver 58 andpipe 70 becomes a problem because of inadequate movement bycar 44 towarddoor 56, thelouver 58 can be provided with a telescopic type extension. - The
lid 50, illustrated in detail in Fig. 10, seals thecar 46 for transportation to a landfill and includes a C-clamp 140 which clamps thelid 50 to thecar 46 compressingfiber frax seal fiber frax seal 142 is attached to the edge of thelid 50 which is constructed of a 3mm steel plate 144 and a 25mm sheet 146 of plywood glued to theplate 144. The plywood provides rigidity at low weight, while the steel provides heat resistance. - The
tunnel doors frame 150 which extends above thetunnel 36, as illustrated in Figs. 11 and 12. Plate steel 6 mm thick with angle iron reinforcements will provide a suitable door. The door is lifted by areversible motor 152 of at least horsepower and acable 154 that runs over apulley 156. Alimit switch 158 ensures that thedoor 54 is not raised past a point where it will be damaged. - A dust seal for the bottom of each door, for example, the
door 54, fits over thetracks 76, against thetunnel bottom 170 and is constructed of asteel pad 172 and afiber frax gasket 174, as illustrated in Figs. 13 and 14. The top of each door is sealed with another pair offiber frax gaskets gaskets 176 is mounted on the door and theother gasket 178 is mounted on a 2.5 cm x 2.5 cm angle iron 180 welded to the top of thetunnel 36. The door, because of the negative pressure in thetunnel 36 created bycombustor 12, will be pulled toward thetunnel 36, helping to create a dust- tight seal. To ensure that a very tight seal is created, aninflatable door gasket 182, located along the sides offrame 150, pushes the door against a fiber frax gasket 184, as illustrated in Fig. 16. An appropriate inflatable gasket can be obtained from Sealmaster Corp. of Kent, Ohio. - The weighing system for weighing the ash in
car 42 to determine when a new car should be moved underchute 30 is illustrated in Fig. 17. Theload cell 52 includes a substantially non-compressible load measuring device such as a piezoelectric sensor load cell, which supports the ends of tworail segments rail segments small gap 194 between the rails which allows the rails to freely move. The other ends of the rail segments are substantially fixed in place. Only one of the rails in the weighing section under thecar 42 includes a load cell, the other rail being a solid rail. - When a
car 46 emerges from a tunnel 36 atelescoping gantry crane 200 that has anelectromagnetic lifting device 202 obtains alid 50 from astack 204 and moves it onto the exitingcar 46. When acar 206 returns, thetelescoping gantry crane 200 lifts thelid 50 off of thecar 206 after the C-clamps 140 holding thelid 50 on thecar 206 have been removed. - The front wheels of each car are pivoting wheels to allow the car to be turned as it is moved about on a concrete pad surrounding the
tunnels car 46 with therails 76 of thetunnels car 46 which is full, is loaded onto atruck 210 by the pushing action of the tow motor. Thetruck 210 can be based on a highway coal carrying dump truck which includes a tilting hydraulically operatedbed 212. Thecar 46 is strapped to the truck bed using dump truck latches ortruck chain tighteners 214. When thetruck 210 arrives at the landfill, thelatches 96 are released from therear door 90 and thebed 212 is tilted, dumping the contents of thecar 46. - If there is insufficient room under the
combustor 12 to provide twotunnels isolation chambers external door 224 and aninternal door 226 which cannot be opened simultaneously. Theoutgoing isolation chamber 222 also includesdoors isolation door 224 is opened. While the car is in chamber 220 a drive mechanism such as a chain pull is connected to the car. Next, thedoor 224 is closed. Thendoor 226 is opened and the car is pulled into the tunnel by the drive mechanism forcing a car into burn-out andcooling chamber 232 through theopen door 228 into theoutgoing chamber 222. Once a car is inisolation chamber 222 it can be removed by a tow motor afterdoor 228 is closed anddoor 230 is opened.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88900926T ATE57249T1 (en) | 1987-01-30 | 1987-12-14 | DRY ASH CONVEYING SYSTEM FOR A REFUSE INCINERATOR. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US984787A | 1987-01-30 | 1987-01-30 | |
US9847 | 1987-01-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0343170A1 EP0343170A1 (en) | 1989-11-29 |
EP0343170B1 true EP0343170B1 (en) | 1990-10-03 |
Family
ID=21740062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880900926 Expired EP0343170B1 (en) | 1987-01-30 | 1987-12-14 | Dry ash handling system for an incinerator |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0343170B1 (en) |
WO (1) | WO1988005888A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114441244B (en) * | 2022-01-21 | 2024-04-16 | 慈溪中科众茂环保热电有限公司 | Garbage incineration fly ash sampling method, system, storage medium and intelligent terminal |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR481747A (en) * | 1916-05-13 | 1917-01-09 | Sulzer Ag | Installation for the incineration of household waste |
FR685920A (en) * | 1928-12-03 | 1930-07-18 | Camia Soc | Improvements made to installations comprising devices giving rise to incandescent bottom ash to be handled, crushed and extinguished |
GB520892A (en) * | 1938-11-02 | 1940-05-07 | Frederick Gilbert Mitchell | Improvements relating to ash-extractors for boiler furnaces |
GB521021A (en) * | 1939-06-26 | 1940-05-09 | George Watson | Improvements relating to refuse consuming furnaces |
GB663402A (en) * | 1949-03-11 | 1951-12-19 | Heenan & Froude Ltd | Improvements relating to refuse destructor furnaces |
US3057309A (en) * | 1959-08-18 | 1962-10-09 | Flynn & Emrich Company | Constant flow stoker |
US3690392A (en) * | 1970-02-24 | 1972-09-12 | Great Western Sugar Co The | Continuous flow scale with preliminary volumetric measurement |
-
1987
- 1987-12-14 EP EP19880900926 patent/EP0343170B1/en not_active Expired
- 1987-12-14 WO PCT/US1987/003415 patent/WO1988005888A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP0343170A1 (en) | 1989-11-29 |
WO1988005888A1 (en) | 1988-08-11 |
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