SE519899C2 - Combustion device with rotary combustion chamber - Google Patents

Combustion device with rotary combustion chamber

Info

Publication number
SE519899C2
SE519899C2 SE9700793A SE9700793A SE519899C2 SE 519899 C2 SE519899 C2 SE 519899C2 SE 9700793 A SE9700793 A SE 9700793A SE 9700793 A SE9700793 A SE 9700793A SE 519899 C2 SE519899 C2 SE 519899C2
Authority
SE
Sweden
Prior art keywords
drum
reactor drum
fuel
combustion
smaller
Prior art date
Application number
SE9700793A
Other languages
Swedish (sv)
Other versions
SE9700793L (en
SE9700793D0 (en
Inventor
Jan Magnusson
Original Assignee
Swedish Bioburner System Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Publication of SE9700793D0 publication Critical patent/SE9700793D0/en
Priority to SE9700793A priority Critical patent/SE519899C2/en
Application filed by Swedish Bioburner System Ab filed Critical Swedish Bioburner System Ab
Priority to PCT/SE1997/001113 priority patent/WO1997049951A1/en
Priority to US09/202,828 priority patent/US6164220A/en
Priority to DK97930937T priority patent/DK0906542T3/en
Priority to EP97930937A priority patent/EP0906542B1/en
Priority to AU34694/97A priority patent/AU3469497A/en
Priority to CA002261276A priority patent/CA2261276C/en
Priority to AT97930937T priority patent/ATE196680T1/en
Priority to DE69703210T priority patent/DE69703210T2/en
Priority to HU0102185A priority patent/HUP0102185A3/en
Priority to CZ19984060A priority patent/CZ292827B6/en
Priority to DE69814823T priority patent/DE69814823T2/en
Priority to US09/380,289 priority patent/US6203315B1/en
Priority to AU66432/98A priority patent/AU6643298A/en
Priority to AT98908396T priority patent/ATE241111T1/en
Priority to EP98908396A priority patent/EP0963533B1/en
Priority to PCT/SE1998/000374 priority patent/WO1998039600A1/en
Priority to DK98908396T priority patent/DK0963533T3/en
Publication of SE9700793L publication Critical patent/SE9700793L/en
Priority to NO19986120A priority patent/NO314470B1/en
Priority to NO19994307A priority patent/NO315672B1/en
Publication of SE519899C2 publication Critical patent/SE519899C2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B1/00—Combustion apparatus using only lump fuel
    • F23B1/30—Combustion apparatus using only lump fuel characterised by the form of combustion chamber
    • F23B1/32—Combustion apparatus using only lump fuel characterised by the form of combustion chamber rotating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/10—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses
    • F23G7/105—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses of wood waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/20—Rotary drum furnace
    • F23G2203/207—Rotary drum furnace with air supply ports in the sidewall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/20—Rotary drum furnace
    • F23G2203/211—Arrangement of a plurality of drums
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2205/00—Waste feed arrangements
    • F23G2205/12—Waste feed arrangements using conveyors
    • F23G2205/121—Screw conveyor

Abstract

A device for the combustion of solid fuel in the form of granules, pellets, chips or other fragmented or finely divided form, comprising a rotary reactor drum (1), which forms the main combustion chamber (13) and has a rear end wall (65) and at the opposite end an outlet (3) for combustion gases to a boiler part for heat transfer to water-cooled surfaces, for example, or other heat-absorbing means, an inlet (55) for combustion air to the main combustion chamber (13), means (40) for feeding fuel through the rear end wall (65) of the reactor drum and means for rotating the reactor drum around its centre axis (2). Inside the main combustion chamber (13), in its rear part, is an inner, smaller drum (60), which is coaxial with the reactor drum (1) and has a perforated jacket. At least the bulk of the fuel is disposed to be fed into the inner, smaller drum (60) and from this to the surrounding main combustion chamber (13). The smaller drum (60) is disposed to be rotatable with the larger reactor drum (1) around its centre axis (2).

Description

i 519 899, för förbränningslufi, en inmatningsskruv 6 i en inmatningstub 12 för partikelformigt fast bränsle, en motor 7 för rotation av inmatningsskruven 6, en drivanordning 8 för rotation av reaktortrumman 1 omkring en lutande rotationsaxel 9, ett nedfallsrör 10 för bränslet och luflkanaler 11 för förbränningsluften. Reaktortrummans 1 lutningsvinkel mot horisontalplanet, med reaktortrummans främre öppning 13 för törbränningsgaser riktad snett uppåt, uppgår till 15°. in 519 899, for combustion hatches, an feed screw 6 in a particulate solid fuel feed tube 12, a motor 7 for rotating the feed screw 6, a drive device 8 for rotating the reactor drum 1 about an inclined axis of rotation 9, a downcomer 10 for the fuel and hatches 11 for the combustion air. The angle of inclination of the reactor drum 1 towards the horizontal plane, with the front opening 13 of the reactor drum for dry-burning gases directed obliquely upwards, amounts to 15 °.

Reaktortrummans 1 bakre ändvägg 25, liksom huvuddelen av dess cylindriska del 26, är dubbelväggig. Utrymmet mellan de inre och yttre väggarna har betecknats 14. Den inre väggen är försedd med hål 15 både i den cylindriska delen och i det bakre ändpartiet för inledning av förbränningsluft in i huvudbrännkaminaren 2. Vidare är mellanrummet 14 uppdelat i kanaler, såsom beskrivs i detalj i nämnda SE 9602495-5, som härmed genom hänvisning införlivas i den föreliggande beskrivningen. Mer bestämt kan lufcströmmarna genom dessa kanaler medelst ventilorgan regleras så att förbränningslufien inleds företrädesvis eller huvudsakligen i de delar av huvudbrännkammaren 2 där bränslet ansamlas. För oinrörning av bränslet finns även niedbringare 16 på reaktortrummans 1 insida, vilka sträcker sig ända bak till ändväggen 25 och medföljer i reaktortrummans 1 rotation.The rear end wall 25 of the reactor drum 1, as well as the main part of its cylindrical part 26, is double-walled. The space between the inner and outer walls has been designated 14. The inner wall is provided with holes 15 both in the cylindrical part and in the rear end portion for introduction of combustion air into the main combustion chamber 2. Furthermore, the space 14 is divided into channels, as described in detail in the said SE 9602495-5, which is hereby incorporated by reference into the present description. More specifically, the air flows through these channels can be regulated by means of valve means so that the combustion hatch is initiated preferably or mainly in the parts of the main combustion chamber 2 where the fuel accumulates. For non-agitation of the fuel, there are also setters 16 on the inside of the reactor drum 1, which extend all the way back to the end wall 25 and are included in the rotation of the reactor drum 1.

Det for uppfinningen utmärkande är en inre, mindre trumma 20 i reaktortrummans 1 bakre del. Den inre, mindre trumman 20 är cylindrisk och har perforerad mantel. Enligt utföringsformen består trumman av en plåttrumina med hål i manteln, men även en nättrumma är tänkbar. Hålen i manteln har betecknats 21. Dessa är så små - diametern eller största utsträckningen uppgår till max 10 mm, företrädesvis till max 8 mm - att bränslepartiklarna icke i väsentlig grad kan passera genom den. Framtill är trumman 20 helt öppen. Denna öppning har betecknats 22. Trumman 20 är koaxiell med reaktor- trumman 1 och omger en central inmatningsöppning 23 som bildar mynning på inmatningstuben 12 för bränslet, som matas in av inmatningsskmven 6. Trummans 20 diameter är något större än öppningen 23. I det ringformade utrymmet 24 mellan inmatningsöppningen 23 och trumman 21 saknar reaktortrummans 1 bakre ändvägg 25 inloppsöppningar för förbränningslufi. Dock kan även ett sådant alternativ tänkas, alltså lufiinblåsningsöppningar också i nämnda ringformade utrymme 24. Trumman 20 är fastsvetsad mot reaktortrummans 1 bakre ändvägg.The characteristic of the invention is an inner, smaller drum 20 in the rear part of the reactor drum 1. The inner, smaller drum 20 is cylindrical and has a perforated sheath. According to the embodiment, the drum consists of a sheet metal drum with holes in the jacket, but a mesh drum is also conceivable. The holes in the jacket have been designated 21. These are so small - the diameter or largest extent amounts to a maximum of 10 mm, preferably to a maximum of 8 mm - that the fuel particles can not substantially pass through it. At the front, the drum 20 is completely open. This opening has been designated 22. The drum 20 is coaxial with the reactor drum 1 and surrounds a central feed opening 23 which forms the mouth of the feed tube 12 for the fuel fed by the feed screw 6. The diameter of the drum 20 is slightly larger than the opening 23. In the annular the space 24 between the feed opening 23 and the drum 21 does not have inlet openings 25 for the combustion hatch fi of the rear end wall 25 of the reactor drum 1. However, such an alternative is also conceivable, i.e. ventilation openings also in said annular space 24. The drum 20 is welded to the rear end wall of the reactor drum 1.

Under drift roteras reaktortrumman 1 och därmed även den inre trumman 20, samtidigt som bränsle matas in genom den centrala öppningen 23 med hjälp av inmatningsskruven in i den mindre, inre trumman 20. Efterhand faller bränslet genom den främre öppningen 10 *2519 899 22 och ned mot reaktortrummans 1 vägg och vidare ned i utrymmet 27 mellan reaktor- trumman 1 och den inre trumman 20 i bakre delen av huvudbrännkammaren 2. Bränslet i huvudbränrikammaren 2 förbränns med hjälp av den luft som blåses in genom öppningarna 15 i manteln och i den bakre ändväggen. Det bränsle som efterhand matas in i den inre trumman 20 torkas i denna trumma, innan det fortsätter in i huvudbränn- kammaren. Den inre trumman 20 fimgerar därför som en forroster, där den mindre filktighet som kan finnas kvar i bränslet i väsentlig grad elimineras. Dessutom synes den mindre trumman 20 fungera så, att mer bränsle under förbränning kan ackumuleras i huvudbrännkammaren, genom att det ringformade utrymmet 27 mer eller mindre fylls med bränsle, som, med hjälp av medbringarna 16 i samverkan med den inre trumman 20, följer med runt i brännarens rotation, vilket ytterligare ökar forbränningsanordningens effekt.During operation, the reactor drum 1 and thus also the inner drum 20 is rotated, at the same time as fuel is fed through the central opening 23 by means of the feed screw into the smaller, inner drum 20. Gradually the fuel falls through the front opening 10 * 2519 899 22 and down against the wall of the reactor drum 1 and further down into the space 27 between the reactor drum 1 and the inner drum 20 in the rear part of the main combustion chamber 2. The fuel in the main combustion chamber 2 is combusted by means of the air blown in through the openings 15 in the jacket and in the rear end wall . The fuel which is subsequently fed into the inner drum 20 is dried in this drum, before it continues into the main combustion chamber. The inner drum 20 therefore acts as a pre-rust, where the minor similarity that may remain in the fuel is significantly eliminated. In addition, the smaller drum 20 appears to function so that more fuel during combustion can accumulate in the main combustion chamber, by filling the annular space 27 more or less with fuel which, by means of the carriers 16 in cooperation with the inner drum 20, follows around in the rotation of the burner, which further increases the power of the combustion device.

Claims (8)

10 15 20 25 30 35 519 399 »r PATENTKRAV10 15 20 25 30 35 519 399 »r PATENT REQUIREMENTS 1. Anordning för förbränning av fast bränsle i form av granuler, pellets, flis eller annan fragmenterad eller finfördelad form, innefattande en roterbar reaktortrumma (1) som bildar huvudbrärmkammare (2) och har en bakre ändvägg (26) och i motsatta änden utlopp (13) for förbränningsgaser till en panndel för värmeöverforing till exempelvis vattenkylda ytor eller annat värmeupptagande organ, inlopp (15) for förbränningslufi till huvudbrännkammaren (2), medel (6) för inmatning av bränsle genom reaktortrummans bakre ändvägg (26) samt medel for att kunna rotera reaktortrumman omkring dennas centrumaxel (9), k ä n n et e c k n a d av att inuti huvudbrämikammaren (2), i dennas bakre del, finns en inre, mindre tnimma (20), som är koaxiell med reaktortrumman (1) och har perforerad mantel, att åtminstone huvuddelen av bränslet är anordnat att inmatas i den inre, mindre trumman (20) och från denna till den omgivande huvudbrännkammaren (2), och att den mindre trumman (20) är anordnad att kunna rotera med den större reaktortrumman (1) omkring dennas centrumaxel (9).A device for the combustion of solid fuel in the form of granules, pellets, ice or other fragmented or distributed form, comprising a rotatable reactor drum (1) forming a main brake chamber (2) and having a rear end wall (26) and at the opposite end an outlet ( 13) for combustion gases to a boiler part for heat transfer to, for example, water-cooled surfaces or other heat-absorbing means, inlet (15) for combustion hatch to the main combustion chamber (2), means (6) for feeding fuel through the rear end wall (26) of the reactor drum and means for rotate the reactor drum about its center axis (9), characterized in that inside the main brake chamber (2), in its rear part, there is an inner, smaller body (20), which is coaxial with the reactor drum (1) and has a perforated jacket, that at least the main part of the fuel is arranged to be fed into the inner, smaller drum (20) and from there to the surrounding main combustion chamber (2), and that the smaller drum (20) is arranged to be able to rotate with the larger reactor drum (1) about its center axis (9). 2. Anordning enligt krav 1, k ä n n e t e c k n a d av att den inre trummans (20) ytterdiameter är minst en fjärdedel och högst tre fjärdedelar av reaktortrummans innerdiameter, företrädesvis minst en tredjedel och högst två tredjedelar av reaktor- trummans innerdiameter.Device according to claim 1, characterized in that the outer diameter of the inner drum (20) is at least one quarter and at most three quarters of the inner diameter of the reactor drum, preferably at least one third and at most two thirds of the inner diameter of the reactor drum. 3. Anordning enligt krav 2, k ä n n et e c k n a d av att den inre trumman (20) har en längd av minst en femtedel och högst tre femtedelar av reaktortrummans (1) längd, företrädesvis minst en fjärdedel och högst hälfien av reaktortrummans längd.Device according to claim 2, characterized in that the inner drum (20) has a length of at least one-fifth and at most three-fifths of the length of the reactor drum (1), preferably at least a quarter and at most half of the length of the reactor drum. 4. Anordning enligt något av kraven 1-3, k ä n n e t e c k n a d av att den inre, perforerade trummans öppningar (21) i trummans mantel har en diameter eller största utsträckning av max 10 mm, företrädesvis max 8 mm, så att åtminstone huvuddelen av det fasta bränslet inte kan passera genom dessa öppningar utan endast genom en främre öppning (22) hos den mindre trumman.Device according to one of Claims 1 to 3, characterized in that the openings (21) of the inner perforated drum in the casing of the drum have a diameter or maximum extent of max. 10 mm, preferably max. the solid fuel cannot pass through these openings but only through a front opening (22) of the smaller drum. 5. Anordning enligt något av kraven 1-4, k ä n n e t e c k n a d av att reaktortrumman (1) lutar, så att utloppet (13) för forbränningsgaser är vänt snett uppåt, varigenom bränslet, då detta lämnar den inre trumman (20) genom dennas främre öppning (22), väsentligen ansamlas i brännarens bakre, ringformade utrymme (27) mellan den inre trumman och reaktortrumman. nu sm» f; 10 519 899 Éiiiiiiiïiiii s'Device according to any one of claims 1-4, characterized in that the reactor drum (1) is inclined, so that the outlet (13) for combustion gases is turned obliquely upwards, whereby the fuel, as this leaves the inner drum (20) through its front opening (22), substantially accumulates in the rear annular space (27) of the burner between the inner drum and the reactor drum. nu sm »f; 10 519 899 Éiiiiiiiiiiiii s' 6. Anordning enligt krav 5, k ä n n e t e c k n a d av att lutningsvinkeln mot horisontal- planet är 5-30°, företrädesvis l0-20°, lämpligen cirka l5°.Device according to claim 5, characterized in that the angle of inclination towards the horizontal plane is 5-30 °, preferably 10-20 °, preferably about 15 °. 7. Anordning enligt något av kraven 1-6, k ä n n e t e c k n a d av att inloppsöppningar (15) for forbränningslufi finns såväl i området for reaktortrummans bakre ändvägg (26), åtminstone utanför den inre trumman, som i området mellan ändväggen och den främre utloppsöppningen.Device according to one of Claims 1 to 6, characterized in that inlet openings (15) for combustion vents are located both in the region of the rear end wall (26) of the reactor drum, at least outside the inner drum and in the region between the end wall and the front outlet opening. 8. Anordning enligt krav 7, k ä n n e t e c k n a d av att inloppsöppningar for forbränningsluft saknas i ändväggen, i det ringformade området (24) bakom den inre, mindre trumman (20), mellan en inmatningsöppning (23) for bränsle och nämnda mindre trumma.Device according to claim 7, characterized in that inlet openings for combustion air are missing in the end wall, in the annular area (24) behind the inner, smaller drum (20), between an inlet opening (23) for fuel and said smaller drum.
SE9700793A 1996-06-25 1997-03-05 Combustion device with rotary combustion chamber SE519899C2 (en)

Priority Applications (20)

Application Number Priority Date Filing Date Title
SE9700793A SE519899C2 (en) 1997-03-05 1997-03-05 Combustion device with rotary combustion chamber
CZ19984060A CZ292827B6 (en) 1996-06-25 1997-06-23 Device for combustion of granular material
EP97930937A EP0906542B1 (en) 1996-06-25 1997-06-23 Rotary burner for solid fuel
US09/202,828 US6164220A (en) 1996-06-25 1997-06-23 Rotary burner for solid fuel
DK97930937T DK0906542T3 (en) 1996-06-25 1997-06-23 Solid fuel rotary burner
PCT/SE1997/001113 WO1997049951A1 (en) 1996-06-25 1997-06-23 Rotary burner for solid fuel
AU34694/97A AU3469497A (en) 1996-06-25 1997-06-23 Rotary burner for solid fuel
CA002261276A CA2261276C (en) 1996-06-25 1997-06-23 Rotary burner for solid fuel
AT97930937T ATE196680T1 (en) 1996-06-25 1997-06-23 ROTATING SOLID FUELS BURNER
DE69703210T DE69703210T2 (en) 1996-06-25 1997-06-23 ROTATING BURNER FOR SOLID FUELS
HU0102185A HUP0102185A3 (en) 1996-06-25 1997-06-23 Rotary burner for solid fuel
DE69814823T DE69814823T2 (en) 1997-03-05 1998-03-03 ROTATING BURNER FOR SOLID FUEL
DK98908396T DK0963533T3 (en) 1997-03-05 1998-03-03 Solid fuel rotary burner
US09/380,289 US6203315B1 (en) 1997-03-05 1998-03-03 Rotary burner for solid fuel
AU66432/98A AU6643298A (en) 1997-03-05 1998-03-03 Rotary burner for solid fuel
AT98908396T ATE241111T1 (en) 1997-03-05 1998-03-03 ROTATING SOLID FUEL BURNER
EP98908396A EP0963533B1 (en) 1997-03-05 1998-03-03 Rotary burner for solid fuel
PCT/SE1998/000374 WO1998039600A1 (en) 1997-03-05 1998-03-03 Rotary burner for solid fuel
NO19986120A NO314470B1 (en) 1996-06-25 1998-12-23 Solid fuel rotary burner
NO19994307A NO315672B1 (en) 1997-03-05 1999-09-03 Solid fuel rotary burner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9700793A SE519899C2 (en) 1997-03-05 1997-03-05 Combustion device with rotary combustion chamber

Publications (3)

Publication Number Publication Date
SE9700793D0 SE9700793D0 (en) 1997-03-05
SE9700793L SE9700793L (en) 1998-09-06
SE519899C2 true SE519899C2 (en) 2003-04-22

Family

ID=20406034

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9700793A SE519899C2 (en) 1996-06-25 1997-03-05 Combustion device with rotary combustion chamber

Country Status (7)

Country Link
EP (1) EP0963533B1 (en)
AT (1) ATE241111T1 (en)
AU (1) AU6643298A (en)
DK (1) DK0963533T3 (en)
NO (1) NO315672B1 (en)
SE (1) SE519899C2 (en)
WO (1) WO1998039600A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2907198A1 (en) * 2006-10-12 2008-04-18 S N E Ronot BURNER WITH CEREALS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3513788A (en) * 1968-10-08 1970-05-26 Albert Ostrin Rotary incinerator with spinning cup burner
GB2079910B (en) * 1980-07-08 1983-11-09 Dalby Harry Robert Solid fuel burner
EP0346531B1 (en) * 1988-06-13 1991-12-18 John Hall Solid fuel burner
FI95746C (en) * 1994-04-20 1996-03-11 Matti Pappinen Equipment for burning moist fuel

Also Published As

Publication number Publication date
ATE241111T1 (en) 2003-06-15
EP0963533B1 (en) 2003-05-21
DK0963533T3 (en) 2003-09-01
AU6643298A (en) 1998-09-22
NO994307L (en) 1999-09-03
EP0963533A1 (en) 1999-12-15
NO994307D0 (en) 1999-09-03
WO1998039600A1 (en) 1998-09-11
SE9700793L (en) 1998-09-06
NO315672B1 (en) 2003-10-06
SE9700793D0 (en) 1997-03-05

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