CN101946125B - Method for mechanical stoking in firing installations and firing installation - Google Patents
Method for mechanical stoking in firing installations and firing installation Download PDFInfo
- Publication number
- CN101946125B CN101946125B CN2009801058702A CN200980105870A CN101946125B CN 101946125 B CN101946125 B CN 101946125B CN 2009801058702 A CN2009801058702 A CN 2009801058702A CN 200980105870 A CN200980105870 A CN 200980105870A CN 101946125 B CN101946125 B CN 101946125B
- Authority
- CN
- China
- Prior art keywords
- grate
- combustion chamber
- fuel
- batch charger
- zone
- 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 - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/16—Over-feed arrangements
- F23K3/18—Spreader stokers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
- F23B40/02—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed by scattering over the fuel-supporting surface
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Solid-Fuel Combustion (AREA)
- Incineration Of Waste (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
A method is disclosed for mechanical stoking in firing installations, in which fuel (3, 7) is applied using a mechanical stoker (4) to a grate (2), which is disposed in the firing chamber (1), wherein the mechanical stoker is oriented opposite the delivery direction of the grate (2), and a corresponding installation. The method is characterized in that the fuel (3, 7) is introduced directly below the firing chamber ceiling (5), viewed in the delivery direction of the grate (2) before the end of the grate, so that a burnout zone (10), which does not have fresh fuel (3, 7) applied thereto, is created on the grate (2) between the mechanical stoker (4) and the end of the grate (2). The residual carbon content of the ash can thus be decreased and a decrease of the rotational speed of the mechanical stoker can also be achieved.
Description
Technical field
The present invention relates to a kind of method and a kind of corresponding combustion apparatus of feeding intake of in combustion apparatus, being used to, wherein fuel places by means of batch charger on the grate that is arranged in the combustion chamber, and the direction that wherein feeds intake is in reverse to the throughput direction of grate.
Background technology
The present invention can be used in the combustion apparatus with centrifugal impeller charging device.At this, the short grained fuel of solid is inserted in the combustion chamber by means of the centrifugal impeller that is arranged in the batch charger.Rotating speed through changing centrifugal impeller can be regulated range.
Corresponding apparatus for example obtains open from DE4217070A1, and coal places on the grate of level by means of charging device there.At this, batch charger roughly is placed in the end wall of combustion chamber in the terminal vertical direction of grate.
The layout of batch charger above the grate end has such shortcoming, and promptly fresh fuel also appears on the grate and completing combustion again before discharging near grate terminally.The residual carbon content of thus, maybe not can observe the maximum permission of ashes.
In addition, the high rotating speed that needs batch charger for the range at the opposed top that arrives grate.
Summary of the invention
Now, task of the present invention is the rotating speed that reduces the residual carbon content of ashes and also reduce batch charger.
This task is through being resolved by method of the present invention, in combustion apparatus, is used for the method that feeds intake, fuel placed on the grate that is arranged in the combustion chamber by means of batch charger, and the direction that wherein feeds intake is in reverse to the throughput direction of grate.According to this method fuel is directly inserted below combustion chamber lid, see the terminal front at grate along the throughput direction of grate or rather, thereby between batch charger and grate end, forming the zone of burnouting on the grate, this zone of burnouting does not apply fresh fuel.It is characterized in that; The part of the upper part of the end wall of said combustion chamber through the sinking of said combustion chamber lid is in being built in the combustion chamber; And insert said fuel on the top end of superincumbent end wall; And said batch charger has centrifugal impeller, and this centrifugal impeller has approximately perpendicular at least rotation.
End through with batch charger and grate staggers along the direction that feeds intake, and in the last zone of grate, before discharging, does not have again fresh fuel to arrive, and only is to accomplish burning in burnt fuel.Realized the burning more completely of fuel thus, this has reduced the residual carbon content of ashes.
In addition, through batch charger is arranged De Genggao, realize that bigger range reduces the rotating speed of centrifugal impeller in other words when range keeps identical when can be at the rotating speed of centrifugal impeller identical.
At this, usually centrifugal impeller is arranged flatly that just the rotation of centrifugal impeller is vertical.Fuel places the housing of batch charger from above in the zone of the wheel hub of centrifugal impeller, and subsequently by means of the blade level of centrifugal impeller outwards and the opening through batch charger be transported in the combustion chamber.Self-evident, the rotation of centrifugal impeller also can tilt with respect to vertical line.
Said combustion chamber lid is attend closed chamber and is had the opening that is used to discharge smog at upside.
In order to realize the low especially residual carbon content of ashes, said burnout the zone can grate length 15 and 40% between, especially between 20 and 40%.
Owing on grate, almost completely or completely burn, can abandon the after-burning in the device that is connected the back by method of the present invention.Therefore, can correspondingly the combustion residue on the grate end be discharged from the combustion chamber.
Especially can be used in the feeding grate by method of the present invention.Different along the slip grate that throughput direction moves with grate itself, the bar of said grate is holding position and only moving back and forth for example.
The present invention proposes corresponding to the combustion apparatus by method of the present invention.This combustion apparatus comprises at least one combustion chamber, is arranged in grate and batch charger in the combustion chamber, can the throughput direction that fuel is in reverse to grate be placed on the grate with this batch charger.This combustion apparatus is characterised in that; Said fuel can directly be inserted below combustion chamber lid by means of batch charger; Or rather; See the terminal front at grate along the throughput direction of grate, thereby when batch charger moves, between batch charger and grate end, forming the zone of burnouting on the grate, this zone of burnouting can not apply fresh fuel.By the present invention; The part of the upper part of the end wall of said combustion chamber through the sinking of said combustion chamber lid is in being built in said combustion chamber; And be provided for inserting the opening of said fuel on the top end of superincumbent end wall; And said batch charger has centrifugal impeller, and this centrifugal impeller has approximately perpendicular at least rotation.
In combustion apparatus according to by method of the present invention, the said zone of burnouting can be grate length 15 to 40% between, especially between 20 to 40%.
Same discharger is set on the end of grate and/or said grate is the feeding grate, can combustion residue be discharged from the combustion chamber with discharger.
Description of drawings
Embodiments of the invention are shown in the drawings and make an explanation below.
Accompanying drawing schematically shows the combustion chamber of combustion apparatus.
The specific embodiment
Accompanying drawing schematically shows the combustion chamber 1 of combustion apparatus, in combustion apparatus, has flatly arranged the grate of carrying from left to right 2.This feeding grate comprises single having along the element of the directed bar (having the length of 500mm at bar described in this example) of throughput direction, and wherein only per second element moves back and forth.Fuel 3 is transported to the combustion chamber 1 from top input batch charger 4 and by means of this batch charger.
Said batch charger 4 has the centrifugal impeller of flatly arranging, just the rotation of this centrifugal impeller is vertical.Fuel 3 in the zone of the wheel hub of centrifugal impeller, place from above batch charger 4 and subsequently by means of the blade level of centrifugal impeller outwards and the opening through batch charger be transported to the combustion chamber.As mentioned in front, the rotation of centrifugal impeller also can tilt with respect to vertical line.
At this, batch charger 4 itself is arranged in 1 outside, combustion chamber, and the opening of batch charger 4 feeds in the opening 6 of combustion chamber 1, or rather, makes fuel as far as possible closely below combustion chamber lid 5, see off.The whereabouts curve negotiating curve 7 that is transported to the fuel in the combustion chamber illustrates.For this purpose, the end of combustion chamber lid 5 side that burnouts of 1 from the combustion chamber begins to sink to the opening 6 that is used for fuel always, thereby said batch charger 4 has locational space above the part 5a of this sinking of combustion chamber lid 5.The opening 6 of combustion chamber is in through the end wall 8 above sinking to forming.The following end wall 13 of combustion chamber 1 remains unchanged.At this, vertically arrange at the end wall 8,13 of combustion chamber 1 described in this example.Yet said end wall 8,13 also can fully or partly be in tilted layout, and wherein vertical component should be preponderated.In case the component of level is preponderated, just said wall has tilted more than 45 ° with respect to vertical line, and so said wall must belong to combustion chamber lid 5.
Said combustion chamber lid 5 is in upside closed chamber 1 and have the opening that is used to discharge smog 9.In this example, the main portions of combustion chamber lid arranges that flatly at this, this part for example comprises half length of grate 5.Certainly, said combustion chamber lid also can have other shape arbitrarily, and this shape depends on corresponding operating position, especially depends on fuel.Under other operating position, the opening that is used to discharge smog 9 for example can be bigger or littler.
The opening 6 of the fuel through will being used for coming from batch charger 4 is in reverse to the throughput direction of grate 5 and inserts the combustion chamber, on grate 5, forms the zone 10 of burnouting, and does not have fresh fuel 7 directly from batch charger 4, to arrive in this zone of burnouting.Therefore, this zone 10 of burnouting just extends to the end of the discharge side of grate 5 at least from top end wall 8 from the vertical lower of opening 6.The said zone of burnouting is roughly the sixth of grate length in this embodiment.
The fresh fuel 7 that comes from batch charger 4 can only appear in all the other zones 11 of grate 5.Just combustion process begins in this zone 11 and is extended in the zone 10 of burnouting, and to the last remains in ashes 12 output from combustion chamber 1 under having the situation of after-burning on the end of grate 5.
Replace the feeding grate also can use the slip grate.This grate also needs not to be level, but also can arrange a little obliquely, for example tilts with the angle below 7 ° with respect to horizontal line.Except the exemplary embodiment that illustrates here, said grate also can be classified to constitute.
Reference numerals list:
1 combustion chamber
2 grates
The fuel of 3 inputs
4 batch chargers
5 combustion chamber lids
The part of the sinking of 5a combustion chamber lid 5
The opening that is used for fuel of 6 combustion chambers
7 are transported to the fuel in the combustion chamber
The top end wall of 8 combustion chambers
9 smog
10 zones of burnouting
11 apply the zone of fuel
12 ashes
The following end wall of 13 combustion chambers
Claims (10)
1. in combustion apparatus, be used to the method that feeds intake; Wherein fuel (3,7) is placed on the grate (2) that is arranged in combustion chamber (1) by means of batch charger (4); The direction that wherein feeds intake is in reverse to the throughput direction of grate (2), wherein, said fuel (3,7) is directly inserted in the below of combustion chamber lid (5); See terminal front along the throughput direction of said grate (2) or rather at said grate; Thereby upward between the end of said batch charger (4) and said grate (2), form the zone (10) of burnouting at said grate (2), this zone of burnouting does not apply fresh fuel (3,7), it is characterized in that; The part (5a) of the upper part of the end wall of said combustion chamber (1) through the sinking of said combustion chamber lid (5) is in being built in the combustion chamber; And insert said fuel (3,7) on the top end of superincumbent end wall (8), and said batch charger (4) has centrifugal impeller, this centrifugal impeller has approximately perpendicular at least rotation.
2. by the described method of claim 1, it is characterized in that, the said zone of burnouting (10) for said grate (2) length 15 and 40% between.
3. by claim 1 or 2 described methods, it is characterized in that, combustion residue (12) is discharged from said combustion chamber (1) at the end of said grate (2).
4. by the described method of claim 1, it is characterized in that said grate (2) is the feeding grate.
5. by the described method of claim 2, it is characterized in that, the said zone of burnouting (10) for said grate (2) length 20 and 40% between.
6. be used for implementing combustion apparatus by each described method of claim 1 to 5; Comprise at least one combustion chamber (1), be arranged in grate (2) and batch charger (4) in the said combustion chamber; Can the throughput direction that fuel (3,7) are in reverse to said grate be placed on the said grate (2) with this batch charger; Wherein, Can said fuel (3,7) directly be inserted in combustion chamber lid (5) below by means of said batch charger (4), see terminal front along the throughput direction of said grate (2) or rather, thereby when said batch charger (4) moves, upward between said batch charger (4) and said grate (2) end, form the zone (10) of burnouting at said grate (2) at said grate; This zone of burnouting can not apply fresh fuel (3,7); It is characterized in that the part (5a) of the upper part of the end wall of said combustion chamber (1) through the sinking of said combustion chamber lid (5) and is provided for inserting the opening (6) of said fuel (3,7) on the top end of superincumbent end wall (8) in being built in said combustion chamber; And said batch charger (4) has centrifugal impeller, and this centrifugal impeller has approximately perpendicular at least rotation.
7. by the described combustion apparatus of claim 6, it is characterized in that, the said zone of burnouting (10) for said grate (2) length 15 and 40% between.
8. by claim 6 or 7 described combustion apparatus, it is characterized in that, on the end of said grate (2), discharger is set, can combustion residue (12) be discharged from said combustion chamber (1) with this discharger.
9. by the described combustion apparatus of claim 6, it is characterized in that said grate (2) is the feeding grate.
10. by the described combustion apparatus of claim 7, it is characterized in that, the said zone of burnouting (10) for said grate (2) length 20 and 40% between.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008010235.0 | 2008-02-21 | ||
| DE102008010235A DE102008010235B4 (en) | 2008-02-21 | 2008-02-21 | Process for litter feeding in furnaces and firing plant |
| PCT/EP2009/051623 WO2009103655A2 (en) | 2008-02-21 | 2009-02-12 | Method for mechanical stoking in firing installations and firing installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101946125A CN101946125A (en) | 2011-01-12 |
| CN101946125B true CN101946125B (en) | 2012-12-05 |
Family
ID=40952804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801058702A Expired - Fee Related CN101946125B (en) | 2008-02-21 | 2009-02-12 | Method for mechanical stoking in firing installations and firing installation |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100323310A1 (en) |
| EP (1) | EP2242949B1 (en) |
| CN (1) | CN101946125B (en) |
| CA (1) | CA2716179A1 (en) |
| DE (1) | DE102008010235B4 (en) |
| WO (1) | WO2009103655A2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9835326B2 (en) * | 2014-01-27 | 2017-12-05 | Valvexport, Inc. | Automated biomass distribution system |
| US10125985B2 (en) * | 2014-01-27 | 2018-11-13 | Valvexport, Inc. | Automated biomass distribution system |
| CN106382637A (en) * | 2016-11-19 | 2017-02-08 | 无锡大功机械制造有限公司 | Feed device of garbage incinerator |
| US20180238543A1 (en) * | 2017-02-23 | 2018-08-23 | Kappes, Cassiday & Associates | Sand bed downdraft furnace and activated carbon scrubber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE686716C (en) * | 1937-11-19 | 1940-01-15 | Alois Kulis | Loading device for furnaces |
| GB523265A (en) * | 1938-12-29 | 1940-07-10 | Ungarische Radiatoren Fabriks | Improvements in and relating to charging devices for mechanical furnaces comprising a throwing shovel |
| GB574829A (en) * | 1944-02-18 | 1946-01-22 | Danks Of Netherton Ltd | Improvements in grates for the furnaces of boilers and the like |
| FR2563320A1 (en) * | 1984-04-24 | 1985-10-25 | Stein Industrie | Boiler for the combustion of non-bituminous coals |
| CN2864390Y (en) * | 2005-11-18 | 2007-01-31 | 朴熙英 | Multifunctional boiler combustion-supporting |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2511935A (en) * | 1950-06-20 | Traveling grate stoker including | ||
| US2110452A (en) * | 1936-05-19 | 1938-03-08 | Riley Stoker Corp | Furnace |
| AT155349B (en) * | 1937-08-24 | 1938-12-27 | Ungarische Radiatoren Fabriks | Mechanical combustion equipment. |
| US2493960A (en) * | 1945-12-11 | 1950-01-10 | Charles S Gladden | Method and apparatus for burning fine solids |
| US2615406A (en) * | 1949-11-12 | 1952-10-28 | Westinghouse Electric Corp | Traveling grate stoker |
| US2654331A (en) * | 1950-05-26 | 1953-10-06 | Detroit Stoker Co | Stoker apparatus |
| US2794406A (en) * | 1952-09-24 | 1957-06-04 | Detroit Stoker Co | Stoker apparatus |
| US3311090A (en) * | 1965-11-26 | 1967-03-28 | Tennessee River Pulp & Paper C | Boiler apparatus for complete combustion of fuel |
| JPS577226A (en) * | 1980-06-17 | 1982-01-14 | Babcock Hitachi Kk | Apparatus for decomposing malodorant gas and recovering waste heat |
| US4362269A (en) * | 1981-03-12 | 1982-12-07 | Measurex Corporation | Control system for a boiler and method therefor |
| JPS5960104A (en) * | 1982-09-28 | 1984-04-06 | Mitsubishi Heavy Ind Ltd | Combustion furnace for coal |
| US4528917A (en) * | 1983-07-05 | 1985-07-16 | Northwest Iron Fireman, Inc. | Solid fuel burner |
| US4485747A (en) * | 1983-07-15 | 1984-12-04 | The United States Of America As Represented By The Environmental Protection Agency | Reducing pollutant emissions by fines removal |
| US4592289A (en) * | 1983-10-18 | 1986-06-03 | The United States Of America As Represented By The Administrator Of The Environmental Protection Agency | Reducing pollutant emissions from a spreader-stoker-fired furnace by stoichiometric control |
| JPS6199019A (en) * | 1984-10-19 | 1986-05-17 | Asahi Boiraa Kogyo Kk | Solid fuel diffusing and charging device |
| JPH0639963B2 (en) * | 1991-05-22 | 1994-05-25 | 東洋ゴム工業株式会社 | Combustion chambers such as boilers and co-firing method of coal and rubber pieces |
| AT412500B (en) * | 2002-10-29 | 2005-03-25 | Wilde Andreas Ing | PROCESS FOR BURNING SMALL FUEL |
| US7017500B2 (en) * | 2004-03-30 | 2006-03-28 | International Paper Company | Monitoring of fuel on a grate fired boiler |
| AT502343B1 (en) * | 2005-08-24 | 2007-12-15 | Eisenzopf Georg | HEATING BOILERS FOR GRAINED FUELS |
-
2008
- 2008-02-21 DE DE102008010235A patent/DE102008010235B4/en not_active Expired - Fee Related
-
2009
- 2009-02-12 CN CN2009801058702A patent/CN101946125B/en not_active Expired - Fee Related
- 2009-02-12 WO PCT/EP2009/051623 patent/WO2009103655A2/en active Application Filing
- 2009-02-12 US US12/866,263 patent/US20100323310A1/en not_active Abandoned
- 2009-02-12 CA CA2716179A patent/CA2716179A1/en not_active Abandoned
- 2009-02-12 EP EP09711622.2A patent/EP2242949B1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE686716C (en) * | 1937-11-19 | 1940-01-15 | Alois Kulis | Loading device for furnaces |
| GB523265A (en) * | 1938-12-29 | 1940-07-10 | Ungarische Radiatoren Fabriks | Improvements in and relating to charging devices for mechanical furnaces comprising a throwing shovel |
| GB574829A (en) * | 1944-02-18 | 1946-01-22 | Danks Of Netherton Ltd | Improvements in grates for the furnaces of boilers and the like |
| FR2563320A1 (en) * | 1984-04-24 | 1985-10-25 | Stein Industrie | Boiler for the combustion of non-bituminous coals |
| CN2864390Y (en) * | 2005-11-18 | 2007-01-31 | 朴熙英 | Multifunctional boiler combustion-supporting |
Non-Patent Citations (1)
| Title |
|---|
| JP昭61-99019A 1986.05.17 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2716179A1 (en) | 2009-08-27 |
| EP2242949B1 (en) | 2018-11-14 |
| US20100323310A1 (en) | 2010-12-23 |
| CN101946125A (en) | 2011-01-12 |
| DE102008010235B4 (en) | 2010-07-01 |
| EP2242949A2 (en) | 2010-10-27 |
| DE102008010235A1 (en) | 2009-09-17 |
| WO2009103655A2 (en) | 2009-08-27 |
| WO2009103655A3 (en) | 2010-02-25 |
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