EP0111874B1 - Installation pour brûler la poussière de charbon - Google Patents

Installation pour brûler la poussière de charbon Download PDF

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Publication number
EP0111874B1
EP0111874B1 EP83112521A EP83112521A EP0111874B1 EP 0111874 B1 EP0111874 B1 EP 0111874B1 EP 83112521 A EP83112521 A EP 83112521A EP 83112521 A EP83112521 A EP 83112521A EP 0111874 B1 EP0111874 B1 EP 0111874B1
Authority
EP
European Patent Office
Prior art keywords
jets
chamber
burner muffle
cross
coal dust
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
Application number
EP83112521A
Other languages
German (de)
English (en)
Other versions
EP0111874A1 (fr
Inventor
Dietrich Buss
Klaus Dipl.-Ing. Brücher
Wilhelm Ing. Grad. Wenz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk
Original Assignee
Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk
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.)
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Publication date
Application filed by Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk filed Critical Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk
Priority to ZA841327A priority Critical patent/ZA841327B/xx
Publication of EP0111874A1 publication Critical patent/EP0111874A1/fr
Application granted granted Critical
Publication of EP0111874B1 publication Critical patent/EP0111874B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/006—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion
    • F23C3/008—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion for pulverulent fuel

Definitions

  • the invention is based on a device for burning coal dust according to the first part of claim 1.
  • Such a device is known from DE-A 2527618.
  • US-A 1919735 describes a coal dust burner, the combustion chamber of the coal dust is supplied helically with the help of air in an axial guide, while tangential air supply lines open into the combustion chamber wall, the air of which surrounds the internal swirl flow of the axial helical dust supply.
  • rotary-flow dedusters are also known, in which an internal air flow set in a swirl movement is overlaid by an air flow in the same direction but in opposite directions, so that when the deduster is standing, the cleaned air can escape upwards near the axis of the deduster, while the centrifugal forces cause it Dust moved outside is guided downwards by the additional helical air flow and gravity and can be drawn off at the lower end of the device (VDI reports No. 363, 1980, pp. 61-68 and “Staub” 23, 1953, No. 11 , Pp. 491-509).
  • VDI reports No. 363, 1980, pp. 61-68 and “Staub” 23, 1953, No. 11 , Pp. 491-509 There has also been no lack of attempts to make the principle of this three-phase dust extractor usable for a coal dust burner.
  • the invention is therefore based on the object of improving the device according to the first part of patent claim 1 in such a way that the extent of the burnout, i.e. the proportion of burned matter in the ash, taking into account the fluctuations in the interior wall temperatures, the moisture content and the ash content, and thus the efficiency is increased, so that the ash obtained can also be used for other purposes, e.g. in the cement industry, when the discharged ash does not exceed a flammable content.
  • the overall length is to be reduced compared to known devices; the ash should be easy to collect and discharge from the device and it should be possible to desulfurize effectively and / or otherwise free the flue gases from unwanted gases and constituents.
  • the invention provides the features of the characterizing part of claim 1.
  • the features of the dependent claims serve to improve and further develop the subject matter of claim 1.
  • the advantage of the object of the invention over the prior art is that the flame emerging from the burner muffle maintains its cylindrical or conical shape with the diameter in the cylindrical or conical acceleration chamber which it has when it emerges from the burner muffle. This results in a shell space between the circumference of the flame and the wall of the acceleration chamber, which has a larger diameter, in which the helical circulation can take place against the front end of the device of the partially still unburned dust particles that have escaped from the combustion air flow by the centrifugal forces, and the ashes, which the flame directly surround.
  • the removal of flue gases from undesired gases or components by additives is known.
  • desulfurization e.g. Lime added to the combustion chamber.
  • the invention offers the possibility to selectively and differently additive in the amount over the length of the acceleration chamber, i.e. at the most convenient point in connection with the gas supplied to the nozzles.
  • the device according to the invention has a burner muffle 1, which is conical and widens from its front end 2 to its rear end at 3.
  • the front end 2 has a swirl device 4, in which the combustion air to be introduced via the line 5 is introduced tangentially into the muffle 1 and displaced in a helical swirl flow 6 in the muffle.
  • the other devices such as the ignition device, etc. are not shown in detail and are of a known type.
  • a tubular blow lance 7 projects through the burner muffle 1 in its longitudinal axis and carries a cap-like part 8 at its rear end, ie in the vicinity of the rear end of the muffle 3, which causes the direction of the conveying air for the Coal dust and the coal dust itself in the blowing lance 7 (see arrow 7a) are reversed and emerge from the cap-like part in the direction of the arrows 9.
  • a circulating flow of the coal dust and the conveying air occurs in the direction of the arrows 10 around the lance 7, the external flow part 10a of which is captured by the flow 6 of the combustion air and entrained in a helical shape, while the remaining part 10b along the lance 7 against the front muffle end flows.
  • the combustion air passes from the muffle 1 into an accelerator chamber 11, the helical swirl movement of the combustion air being maintained as an internal swirl flow 12 along the solid line.
  • the flame 13 forms, which e.g. protrudes into the boiler room 14 of the downstream boiler 15.
  • the accelerator chamber 11 has a conical shape, the wall 16 of the accelerator chamber 11 tapering from its front end to its rear end 17.
  • the cross section of the accelerator chamber 11 at the transition between the muffle 1 and the accelerator chamber is kept larger than the cross section at the rear end 3 of the burner muffle 1. This forms an annular channel 18 on the one hand, and a jacket-like extension 19 of the accelerator chamber on the other hand.
  • the annular channel can preferably experience such a curvature or beveling of its wall 29 adjacent to the muffle 1 that the coal dust parts from the extension 19 are again guided into the interior of the muffle 1 or the accelerator chamber 11.
  • the swirl flow 12 and the front end of the flame 13 retain their shape in the accelerator 11 and do not enlarge in the enlargement 19, which can thereby be used to allow the return of the dust and ash particles to take place along the wall 12 of the chamber 1 .
  • the long back and forth path which the dust particles in the muffle 1 and the accelerator chamber 11 take repeatedly, ensures that a long combustion path is achieved with a short design of the device.
  • the radiant heat of the already ignited coal particles acts both on the way there (from left to right) and on the way back (from right to left in the drawing) on the as yet ignited dust particles.
  • the length of the accelerator chamber 11 as well as its outer shape can be varied.
  • the accelerator chamber can have a cylindrical shape, and its length can also be chosen such that the flame 13 which projects into the boiler space 14 can be made longer or shorter.
  • the nozzles 20-27 of the individual cross-sectional planes A to E of the acceleration chamber 11 are arranged at different inclinations to the cross-sectional plane.
  • the nozzles 24-27 of levels D and E have a slight inclination towards the front end and the annular channel 18 of the chamber 11.
  • the nozzles of level C have either the same direction of inclination as the nozzles 24-27, e.g. the nozzle 23, or they have no inclination to the cross-sectional plane C, e.g. the nozzle 22.
  • the nozzles 20 and 21 are inclined with respect to their cross-sectional planes in the direction of the rear end 17 of the acceleration chamber 11.
  • the angular position can not only differ from cross-sectional plane to cross-sectional plane, but also within a cross-sectional plane, as can be seen from the nozzles 22, 23 of plane C in FIG. 1.
  • the number of nozzles can also differ from cross-sectional level to cross-sectional level. 2 shows a total of six nozzles 24-24b and 25-25b, while level B has only three nozzles 21, 31, 31a.
  • Fig. 1 shows the different angles of inclination a ... Q of the planes with each other and inside the plane
  • Fig. 2 shows 3 that the angles between the nozzles and the corresponding tangents T 2 and T 3 of the wall 16 of the accelerator chamber 11 can also be different.
  • the feed lines 124 to 125b of the nozzles 24-25b are combined into two groups, the feed lines 124-124b opening or passing into a tube 224 with a valve 324, while the feed lines 125-125b into a common one Open or pass pipe 225 with valve 325. Both pipes receive the gas or air from a line 100.
  • FIG. 3 shows that an unequal number of nozzles on one level can be supplied with different additives.
  • valves 324, 325 and 425a, 525a allow precise adjustment of the gas or air quantity to be supplied or the quantity of additives. This makes it possible, on the one hand, to regulate the outer swirl flow 28 very precisely, i.e. to accelerate or decelerate in order to expose the dust particles of this flow to the radiant heat of the inner swirl flow 12 for more or less long and thus to burn as many coal dust particles as possible. On the other hand, it is also possible to introduce additives in the desired amount into the chamber 11. The additive, and this is essential when adding the additives, is not added with the coal dust or the combustion air, but at a later point in time when the coal dust has already ignited.
  • the nozzles 20-27 are preferably permanently installed in the wall, but this does not preclude holding the nozzles in spherical parts and making them pivotable in spherical caps.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Claims (5)

1. Installation pour brûler la poussière de charbon, comportant un moufle de brûleur (1) axial cylindrique ou conique s'élargissant jusqu'à la chambre de combustion, équipé d'une lance de soufflage (7) de la poussière de charbon et d'un dispositif cyclone (4) destiné à l'air de combustion et disposé à l'extrémité opposée (2) à la chambre de combustion, une calotte d'inversion (8) disposée à l'extrémité libre de la lance de soufflage (7) destinée à inverser le sens d'écoulement de la poussière de charbon à l'extérieur de la lance (7), ainsi qu'une chambre d'accélération (11) cylindrique ou conique se rétrécissant jusqu'à la chambre de combustion, disposée axialement entre le moufle du brûleur (1) et la chambre de combustion, caractérisée en ce que le diamètre de la chambre d'accélération (11) est plus important que le diamètre du mouffle du brûleur (1) à sa jonction avec le moufle (1), de manière à former un élargissement (19) et un épaulement (paroi 29) et en ce qu'il est prévu de manière tangentielle à la paroi (16) de la chambre d'accélération (11), suivant plusieurs plans transversaux (A-E) situés l'un derrière l'autre dans le sens longitudinal de la chambre d'accélération (11), des buses (20-27) permettant, indépendamment l'une de l'autre, d'alimenter la chambre d'accélération (11) en gaz ou en air dans son élargissement (19), de manière à former un écoulement cyclone externe (28) entourant l'écoulement cyclone interne (12) provenant du moufle du brûleur (1), dirigé dans le sens opposé à celui-ci et canalisé dans l'élargissement (29) de la chambre d'accélération (11).
2. Installation suivant la revendication 1, caractérisée en ce qu'il est prévu des conduites et des canalisations (124-125b, 224, 225, 100) d'alimentation en gaz ou en air vers les buses (20-27) comportant des vannes de réglage du débit pour chacune des buses, pour chaque groupe de buses ou pour toutes les buses d'un même plan transversal.
3. Installation suivant la revendication 1, caractérisée en ce que les buses (20-27) sont reliées à des récipients destinés à contenir des additifs, par l'intermédiaire de canalisations équipées de vannes de réglage du débit (424a, 424b, 524a, 524b).
4. Installation suivant une des revendications 1 à 3, caractérisée en ce que les buses (20-27) dans la paroi (16) de la chambre d'accélération (11) sont disposées suivant les différents plans transversaux (A-E) dans le prolongement d'un plan transversal ou orientée suivant un angle tangentiel distinct dans le même plan transversal et/ou selon des angles d'inclinaison (a...Q) différents par rapport au plan transversal correspondant.
5. Installation suivant une des revendications 1 à 4, caractérisée en ce que le sens des buses (20-27) peut être réglé.
EP83112521A 1982-12-15 1983-12-13 Installation pour brûler la poussière de charbon Expired EP0111874B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ZA841327A ZA841327B (en) 1983-12-13 1984-02-23 Combustion device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3246379 1982-12-15
DE3246379 1982-12-15

Publications (2)

Publication Number Publication Date
EP0111874A1 EP0111874A1 (fr) 1984-06-27
EP0111874B1 true EP0111874B1 (fr) 1987-04-22

Family

ID=6180704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112521A Expired EP0111874B1 (fr) 1982-12-15 1983-12-13 Installation pour brûler la poussière de charbon

Country Status (4)

Country Link
US (1) US4507075A (fr)
EP (1) EP0111874B1 (fr)
CA (1) CA1209408A (fr)
DE (1) DE3371114D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101865461A (zh) * 2010-06-08 2010-10-20 上海市特种设备监督检验技术研究院 一种可调式中心给粉旋流煤粉浓淡燃烧器

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DE3436624A1 (de) * 1984-10-05 1986-04-10 Norddeutsche Affinerie AG, 2000 Hamburg Vorrichtung zur erzeugung zuendfaehiger feststoff/gas-suspensionen
US4539918A (en) * 1984-10-22 1985-09-10 Westinghouse Electric Corp. Multiannular swirl combustor providing particulate separation
US4629416A (en) * 1985-06-11 1986-12-16 Voorheis Industries, Inc. Bluff body register
DE3523172C1 (de) * 1985-06-28 1986-12-11 Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk, 5142 Hückelhoven Vorrichtung zum Verbrennen von reaktionstraegem Kohlenstaub
US4958619A (en) * 1985-07-08 1990-09-25 Institute Of Gas Technology Portable, flueless, low nox, low co space heater
US5009174A (en) * 1985-12-02 1991-04-23 Exxon Research And Engineering Company Acid gas burner
DE3636071A1 (de) * 1986-10-23 1988-08-25 Gewerk Sophia Jakoba Einrichtung zum verbrennen, insbesondere von reaktionstraegem kohlenstaub
DE3643040C1 (de) * 1986-12-17 1988-02-25 Gewerk Sophia Jakoba Vorrichtung zum Verbrennen von Kohlenstaub
US4873930A (en) * 1987-07-30 1989-10-17 Trw Inc. Sulfur removal by sorbent injection in secondary combustion zones
US4800825A (en) * 1987-08-31 1989-01-31 Trw Inc. Slagging-combustor sulfur removal process and apparatus
US5307636A (en) * 1987-11-20 1994-05-03 Sundstrand Corporation Staged, coaxial, multiple point fuel injection in a hot gas generator having a sufficiently wide cone angle
US4871308A (en) * 1987-11-25 1989-10-03 Combustion Concepts Inc. Method and apparatus for heating a fluid stream
US4928479A (en) * 1987-12-28 1990-05-29 Sundstrand Corporation Annular combustor with tangential cooling air injection
US4920898A (en) * 1988-09-15 1990-05-01 Trw Inc. Gas turbine slagging combustion system
WO1990003538A1 (fr) * 1988-09-19 1990-04-05 Regents Of The University Of Minnesota Enceinte de confinement dynamique
US5111757A (en) * 1991-05-21 1992-05-12 Regents Of The University Of Minnesota Dynamic containment vessel
US5809910A (en) * 1992-05-18 1998-09-22 Svendssen; Allan Reduction and admixture method in incineration unit for reduction of contaminants
US5281132A (en) * 1992-08-17 1994-01-25 Wymaster Noel A Compact combustor
DE4416650A1 (de) * 1994-05-11 1995-11-16 Abb Management Ag Verbrennungsverfahren für atmosphärische Feuerungsanlagen
US6850532B2 (en) 2002-09-20 2005-02-01 Cisco Technology, Inc. Arrangement in a gateway for registering mobile routers of a mobile ad hoc network to respective home agents
US8449288B2 (en) * 2003-03-19 2013-05-28 Nalco Mobotec, Inc. Urea-based mixing process for increasing combustion efficiency and reduction of nitrogen oxides (NOx)
US7670569B2 (en) * 2003-06-13 2010-03-02 Mobotec Usa, Inc. Combustion furnace humidification devices, systems & methods
US7537743B2 (en) * 2004-02-14 2009-05-26 Mobotec Usa, Inc. Method for in-furnace regulation of SO3 in catalytic NOx reducing systems
US8251694B2 (en) * 2004-02-14 2012-08-28 Nalco Mobotec, Inc. Method for in-furnace reduction flue gas acidity
WO2005106326A1 (fr) * 2004-04-30 2005-11-10 Icopal A/S Dispositif de chauffage au gaz et procede permettant de generer un ecoulement d'air chaud
EP1869307B1 (fr) * 2005-04-12 2010-08-18 Zilkha Biomass Energy LLC Systeme integre d'energie de biomasse
US7410356B2 (en) 2005-11-17 2008-08-12 Mobotec Usa, Inc. Circulating fluidized bed boiler having improved reactant utilization
BRPI0719436A2 (pt) * 2006-09-29 2013-12-10 Zilkha Biomass Energy Llc Sistema de energia de biomassa integrado
US8011108B2 (en) * 2008-04-04 2011-09-06 Robert Upthegrove Leveling device
US8069824B2 (en) * 2008-06-19 2011-12-06 Nalco Mobotec, Inc. Circulating fluidized bed boiler and method of operation
US8161725B2 (en) * 2008-09-22 2012-04-24 Pratt & Whitney Rocketdyne, Inc. Compact cyclone combustion torch igniter

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US1910735A (en) * 1927-02-14 1933-05-23 Buttnerwerke A G Burner for coal dust firing
US2517015A (en) * 1945-05-16 1950-08-01 Bendix Aviat Corp Combustion chamber with shielded fuel nozzle
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DE2527618C2 (de) * 1975-06-20 1985-09-26 Fritz Dr.-Ing. 8026 Ebenhausen Schoppe Verfahren und Vorrichtung zur Verbrennung von Kohlenstaub
US4043512A (en) * 1976-01-23 1977-08-23 Foster Wheeler Energy Corporation Coal burner
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US4389185A (en) * 1980-10-31 1983-06-21 Alpkvist Jan A Combustor for burning a volatile fuel with air
DE3237454C2 (de) * 1981-03-17 1995-09-14 Trw Inc Verbrennungsverfahren und Verbrennungsofen zur Durchführung des Verfahrens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101865461A (zh) * 2010-06-08 2010-10-20 上海市特种设备监督检验技术研究院 一种可调式中心给粉旋流煤粉浓淡燃烧器
CN101865461B (zh) * 2010-06-08 2014-06-04 上海市特种设备监督检验技术研究院 一种可调式中心给粉旋流煤粉浓淡燃烧器

Also Published As

Publication number Publication date
DE3371114D1 (en) 1987-05-27
EP0111874A1 (fr) 1984-06-27
CA1209408A (fr) 1986-08-12
US4507075A (en) 1985-03-26

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