EP1957867A1 - Bruleur de four rotatif - Google Patents

Bruleur de four rotatif

Info

Publication number
EP1957867A1
EP1957867A1 EP06828952A EP06828952A EP1957867A1 EP 1957867 A1 EP1957867 A1 EP 1957867A1 EP 06828952 A EP06828952 A EP 06828952A EP 06828952 A EP06828952 A EP 06828952A EP 1957867 A1 EP1957867 A1 EP 1957867A1
Authority
EP
European Patent Office
Prior art keywords
jet air
burner
air
jet
support tube
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.)
Granted
Application number
EP06828952A
Other languages
German (de)
English (en)
Other versions
EP1957867B1 (fr
Inventor
Alexander Knoch
Ernst Schröder
Karin Kluthe
Wilhelm Wenzel
Giovanni Loggia
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.)
KHD Humboldt Wedag AG
Original Assignee
KHD Humboldt Wedag AG
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
Application filed by KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Publication of EP1957867A1 publication Critical patent/EP1957867A1/fr
Application granted granted Critical
Publication of EP1957867B1 publication Critical patent/EP1957867B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel

Definitions

  • the invention relates to a burner for a rotary kiln, with an annularly disposed within a combustion liner tube channel for the pneumatic transport and blowing of fine-grained solid fuel through an annular die and a plurality of concentrically arranged around the circumference of the annular gap nozzle distributed jet air nozzles with the burner axis diverging nozzle openings through which Combustion air divided into many individual high-speed primary air jets emerges.
  • Known rotary kiln burners are usually designed as so-called three-channel burners (for example, DE 43 19 363 A1), wherein through the central burner channel a pneumatically transportable solid fuel such.
  • the primary air channel located radially inside the coal dust channel has at its outlet a swirl generator, so that the primary air emerging there receives a rotational component and also swirl air, Swirlluft or radial air is called.
  • the known swirl generators are usually not adjustable, certainly not during operation of the rotary kiln.
  • the combustion air of the rotary kiln burner also referred to as jet air, which is radially external to the pulverized coal, is conveyed by means of a multiplicity in the annular jet.
  • the cylindrical nozzle bodies are individually rotatable with their jet bores set at an angle to the nozzle axis, but not during rotary kiln operation, so that during the kiln operation, the divergence angle of the jet air jets does not influence the optimum pulverized coal jet air jet. Mixing and flame shape can be taken.
  • a rotary kiln burner in whose primary air duct distributed around the circumference flexible metallic air hoses are arranged with air nozzles, whose air flow direction can be adjusted from axial to radial, by by turning the entire air hose bundle with their flexible air hoses Heilausströmdüsen also obliquely to the burner axis to increase the swirl component of the radial clearance can be adjusted.
  • this known spin adjustment of a rotary kiln burner is relatively expensive, in the known burner only a parallel outflow of fuel and primary air is possible, even if the primary air is provided with a swirl component.
  • the invention has for its object to provide a rotary kiln burner, in particular for fine-grained solid fuels with jet air nozzles, the species in order to change the divergence angle of the jet jets in response to different B renn fabric and / or resulting flame shapes are easy and yet effective during the rotary kiln operation adjustable.
  • the jet air nozzles with the jet openings diverging to the burner axis are each fastened at the end of jet air pipes, which are distributed axially parallel to the burner axis, namely inside a cooling air ring channel surrounded annularly outside the solid fuel pipe and surrounding the solid fuel channel.
  • the jet air pipes are rotatably mounted in the cooling air ring channel, wherein at the cold end of the burner lance outside of the combustion support tube, the device for Drehver ein the jet air ducts is arranged.
  • the bearings of the individual jet air pipes are held in two spaced apart flange rings of the combustion liner.
  • the annular space between the spaced flange rings can be formed within the provided with a Jetluftzu- supply manifold fuel delivery pipe as Anströmkasten from which the supplied jet air flows through through holes of the jet air pipes therethrough and then flows out of the jet air nozzles.
  • flexible hoses for supplying jet air into the jet air pipes can also be connected to the jet air pipes which can be rotated individually or jointly about their longitudinal axes at their outer ends remote from the jet air nozzles.
  • Fig. 1 the rotary kiln burner according to the invention as a complete
  • FIG. 2 shows in enlarged detail the view of the burner mouth in FIG. 1 in detail
  • FIG. 3 shows in turn enlarged out a detail of FIG. 2,
  • Fig. 4 a Axialteillteilsexcellent through the rotary kiln burner with
  • Fig. 5 in turn drawn out in perspective the view of the burner mouth, in which, compared to Fig. 2, the burner support tube is omitted with the protective sheath.
  • FIG. 1 shows the complete burner lance with connecting pieces 10 for introducing pulverized coal, 11 for introducing jet air, 12 for introducing swirling air, 13 for the possible introduction of alternative fuels and 14 for introducing cooling air for internal cooling of the burner support tube 19, which is externally connected by a coated refractory mass 15 is armored.
  • the introduced fuels burn up after leaving the burner mouth, forming a flame at the right end of the burner lance in the rotary kiln.
  • the rotary kiln burner according to the invention is a three-channel burner with a ring-shaped channel for the pneumatic transport of fine-grained solid fuel such.
  • the coal dust channel is concentrically surrounded both by a radially inwardly and radially outwardly located combustion air duct, these combustion air streams forming the primary air for the burner.
  • the concentrically arranged within the coal dust channel primary air channel is at its mouth with a swirl generator 17th z. B. swirl slots, so that this radially inner primary air channel is also called swirl air duct.
  • pilot burners as well as the outlets 18 can also be arranged for burning the optionally introduced alternative fuel 13. 19, the combustion liner is called, which is protected in the front lance area by the applied refractory material 15.
  • the radially outer primary air namely the introduced jet air 1 1 occurs at high speed in the form of jets of individual distributed around the circumference of the burner mouth arranged Jetluftdüsen 20, z. B. 16 pieces, of which in the detail drawing Figure 3, the Jetluftdüse 20 can be seen with its divergent to the burner axis nozzle bore.
  • the high-speed jet air jets which are capable of as much as possible of the rotary kiln burner in the rotary kiln surrounding hot secondary air of z. For example, to aspirate 1000 ° C into the core of the burner flame for rapid and complete pulverized coal combustion, the fuel cone should be at an optimum location for the purpose of achieving high flame turbulence.
  • the Jet Kunststoffdüsen 20 with their diverging to the burner axis nozzle openings according to the invention in each case at the end of z. B.
  • the jet air tubes 21 distributed around the circumference are rotatably mounted about their jet air tube axes.
  • the rotatable bearing points of the jet air pipes 21 can be held in two spaced-apart flange rings 23, 24 of the combustion support tube 19.
  • the device for rotational adjustment of the jet air pipes is arranged outside of the fuel tube 19.
  • the jet air pipes 21 can carry at their outer ends, closed in the exemplary embodiment, toothed ridges 25 which can be in rotational engagement with a ring or band or link chain, not shown, provided with internal toothing.
  • all the jet air pipes 21 can then be rotated synchronously with their jet air nozzles 20, so that the divergence angle of the jet air jet cone can be changed during the rotary kiln operation, thus influencing the burner flame and the fuel combustion.
  • the Anström povertykasten 26 is sealed by ring seals in the flange rings 23, 24 with advantage to the outside.
  • a certain leakage rate of jet air can be readily accepted according to the invention, however, because the leakage current of jet air would then form part of the cooling air already used for the burner within the cooling air ring channel 22.
  • FIG. 5 it can be seen that in the cooling-air annulus between the fuel-carrying tube 19 and the pulverized coal tube with the annular gap nozzle 16, which are distributed around the circumference, are arranged with their jet-air nozzles 20 in this annular space arranged for the cooling air flow-through spacer 28 which holds the jet air pipes 21 and the concentric tubes 16, 19 at a distance. Furthermore, it is also clearly evident from FIG. 5 that at least some of the gaps between adjacent jet air pipes 21 can be utilized in the cooling-air ring space between the combustion support pipe 19 and the pulverized coal pipe 16 to have a pipe 18 therein for supplying an alternative fuel and / or devices therein to arrange for monitoring the burner flame.

Abstract

L'objectif de cette invention est de créer un brûleur de four rotatif conçu en particulier pour des combustibles à grains fins tels que la poudre de charbon, comprenant des buses à jet d'air qui peuvent être ajustées facilement et efficacement pendant le fonctionnement du four rotatif en vue de modifier l'angle de divergence des jets d'air haute vitesse pour modifier la forme de la flamme et optimaliser la combustion. A cet effet, les buses à jet d'air (20) sont respectivement fixées sur l'extrémité des tuyaux à jet d'air (21), de manière que leurs ouvertures divergent par rapport à l'axe du brûleur, et de répartir lesdits tuyaux à jet d'air autour de l'axe du brûleur de manière que les axes soient parallèles. En outre, les tuyaux à jet d'air (21) sont placés dans un canal annulaire d'air de refroidissement (22) qui entoure annulairement le canal de poudre de charbon (16) et qui est délimité à l'extérieur par un tuyau de support de brûleur (19), et sont montés de manière à pouvoir être déplacés autour des axes des tuyaux à jets d'air, de sorte que, lorsque les tuyaux à jet d'air (21) décrivent un mouvement de rotation, à l'extrémité froide de la lance du brûleur, la divergence des jets d'air haute vitesse, et par conséquent l'angle du cône d'écoulement des jets d'air, puissent être modifiés et ajustés par rapport au cône de la poudre de charbon.
EP06828952A 2005-11-11 2006-11-08 Bruleur de four rotatif Not-in-force EP1957867B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005053819A DE102005053819A1 (de) 2005-11-11 2005-11-11 Drehofenbrenner
PCT/EP2006/010671 WO2007054271A1 (fr) 2005-11-11 2006-11-08 Bruleur de four rotatif

Publications (2)

Publication Number Publication Date
EP1957867A1 true EP1957867A1 (fr) 2008-08-20
EP1957867B1 EP1957867B1 (fr) 2013-03-06

Family

ID=37603125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06828952A Not-in-force EP1957867B1 (fr) 2005-11-11 2006-11-08 Bruleur de four rotatif

Country Status (10)

Country Link
US (1) US8449292B2 (fr)
EP (1) EP1957867B1 (fr)
CN (1) CN101292116A (fr)
DE (1) DE102005053819A1 (fr)
DK (1) DK1957867T3 (fr)
ES (1) ES2405619T3 (fr)
PT (1) PT1957867E (fr)
RU (1) RU2008107230A (fr)
TW (1) TW200734583A (fr)
WO (1) WO2007054271A1 (fr)

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FR3024765B1 (fr) * 2014-08-06 2016-07-29 Fives Pillard Bruleur a injection d'air ou de gaz ajustable
GB2532065A (en) * 2014-11-07 2016-05-11 Kiln Flame Systems Ltd Burner
CN104329665A (zh) * 2014-11-12 2015-02-04 宁夏嘉翔自控技术有限公司 一种金属镁还原炉的煤粉燃烧器
WO2017108797A1 (fr) * 2015-12-23 2017-06-29 Flsmidth A/S Brûleur pour four
CN108626716B (zh) * 2018-04-24 2019-08-09 界首市盈丰环保科技有限公司 一种降低煤粉燃烧有害物质排放的燃烧器
CN111226076B (zh) * 2018-09-26 2021-12-28 太平洋水泥株式会社 水泥窑用燃烧器装置及其运转方法
CN109595567A (zh) * 2018-12-11 2019-04-09 南京普兰特换热设备有限公司 高纯度废氨气焚烧炉及系统
CN109595568B (zh) * 2018-12-11 2020-04-03 江苏普蓝特节能技术有限公司 高纯度废氨气焚烧炉、系统及工艺
CN113074540B (zh) * 2020-09-18 2023-09-12 南京利卡维智能科技有限公司 一种多段陶瓷炉管快速拼装结构及材料递进方法

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Also Published As

Publication number Publication date
US8449292B2 (en) 2013-05-28
ES2405619T3 (es) 2013-05-31
PT1957867E (pt) 2013-05-07
DK1957867T3 (da) 2013-06-03
US20080213714A1 (en) 2008-09-04
TW200734583A (en) 2007-09-16
CN101292116A (zh) 2008-10-22
EP1957867B1 (fr) 2013-03-06
RU2008107230A (ru) 2009-12-20
WO2007054271A1 (fr) 2007-05-18
DE102005053819A1 (de) 2007-05-16

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