EP0406481A1 - Procédé et dispositif pour empêcher et le cas échéant éliminer les bouchons dans l'apex d'un cyclone d'échange thermique - Google Patents

Procédé et dispositif pour empêcher et le cas échéant éliminer les bouchons dans l'apex d'un cyclone d'échange thermique Download PDF

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Publication number
EP0406481A1
EP0406481A1 EP19890121270 EP89121270A EP0406481A1 EP 0406481 A1 EP0406481 A1 EP 0406481A1 EP 19890121270 EP19890121270 EP 19890121270 EP 89121270 A EP89121270 A EP 89121270A EP 0406481 A1 EP0406481 A1 EP 0406481A1
Authority
EP
European Patent Office
Prior art keywords
lance
cyclone
housing
heat exchanger
cyclone heat
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
EP19890121270
Other languages
German (de)
English (en)
Other versions
EP0406481B1 (fr
Inventor
Wolfgang Bossmann
Wilfried Kreft
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.)
CNH Industrial Baumaschinen GmbH
Original Assignee
O&K Orenstein and Koppel GmbH
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 O&K Orenstein and Koppel GmbH filed Critical O&K Orenstein and Koppel GmbH
Priority to AT89121270T priority Critical patent/ATE89918T1/de
Publication of EP0406481A1 publication Critical patent/EP0406481A1/fr
Application granted granted Critical
Publication of EP0406481B1 publication Critical patent/EP0406481B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/22—Apparatus in which the axial direction of the vortex is reversed with cleaning means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/2016—Arrangements of preheating devices for the charge

Definitions

  • the invention relates to a device for preventing or removing blockages in the outlet area of cyclone heat exchangers, in which the essentially flour-shaped material flows vertically through the cyclone from top to bottom and can be removed in an outlet area narrowed with respect to the feed area, with at least one in the outlet area of the cyclone, arranged at an acute angle, which is formed from a lance which can be actuated by means of a cylinder and can be translationally introduced into the outlet area, and at least one housing surrounding it.
  • DE-OS 32 12 700 shows an apparatus for separating an agglomerated particulate material.
  • a lance which can be passed through an opening in the wall and which has an actuating device for forcibly extending the lance from its retracted position outside the container into a position which moves into the container.
  • the lance can be moved into the container along a line which runs downward and forms an acute angle with the direction of flow of the material.
  • the lance is in the range of yours Free tip with a tip.
  • a hydraulic cylinder is used as the actuating device, which introduces the lance into the area of the container at constant speed, the boundary edge being formed on the one hand by the wall and on the other hand by the upper part of the outlet.
  • the lance can thus be inserted into the material accumulating in the outlet area. Since the lance only carries out a translational movement, it can happen here that the lance tip only digs a hole in the agglomerated baked material and the blockage cannot therefore be completely removed. Furthermore, the lance is not able to penetrate deeper into the outlet area (drain pipe) of the container in order to be able to specifically remove any blockages that may occur here.
  • the invention has for its object to design a quasi-automatically mechanical device for improving the cleaning of enclosed spaces, in particular the cyclone heat exchanger outputs.
  • blockages should be able to be removed safely not only in the immediate outlet area of the cyclone, but also in lower-lying areas of the drain pipe, without interfering with the operating process.
  • a corresponding control is to be provided, which triggers the cleaning process automatically when blockages are detected.
  • the lance is inserted intermittently into the outlet area of the cyclone heat exchanger by means of a hydraulic or pneumatic cylinder, a rotational movement is superimposed on the impact movement, the rotational movement being able to be carried out alternately with an angle of rotation of less than 360 ° , the center line of the lance corresponds approximately to the center line of the outlet area of the cyclone heat exchanger, -
  • the lance has a drill head in the area of its free end.
  • the tool has a corresponding freedom of movement
  • the entire device can be rotated about a swivel axis.
  • the axis of rotation is defined by the pivot point on the lower mounting flange and a bracket attached to the casing tube.
  • the entire device is cooled with ambient air, which preferably feeds in a radial fan or is sucked in by the system vacuum. After cooling, the air leaves the device and enters the cyclone flour chute. When the cleaning device is in the rest position, it can be shut off to the hot area of the cyclone with an automatically operating slide. In this way, false air does not get into the furnace system unnecessarily and the components of the device are protected against damage.
  • the lance tip as a drill head in connection with an alternating reciprocating rotary movement, a very strong milling or tearing movement is generated within the container outlet, which in conjunction with the intermittent translational movement of the lance leads to optimal tearing of blockages both in the outlet area of the Cyclone heat exchanger as well as in lower lying areas of the adjoining drain pipe.
  • the respective angle of rotation is preferably between 150 o and 250 o .
  • the drill head consists of at least one interchangeable cutting edge and a plurality of fangs arranged axially evenly distributed over the circumference thereof, the cutting edge being designed as a flat chisel according to a further concept of the invention.
  • the cutting tip which is kept flat in one plane, acts as a tearing tool and, in contrast to the pointed design according to DE-OS 32 12 700, can bring about a much better dissolution of caking.
  • the lance is provided on the outer circumference with guide elements which bear against the inner circumference of the housing (casing tube) and come into contact with the chute area of the cyclone heat exchanger outlet when the lance is extended and thus guide the lance.
  • the lance should not only clear the outlet area of the cyclone heat exchanger but also lower areas of the drain pipe of blockages.
  • the lance may be used for this latter purpose must be extended several meters, but the guidance takes place exclusively in the housing (casing tube), this results in a long lever mounted on one side, which is also still under the influence of the flowing material.
  • the angle of inclination of the chute is preferably selected so that it corresponds to the inclination of the housing, so that the lance can extend on this chute without any risk of being bent at any point.
  • a further criterion is specified here, which may lead to damage or influencing the operating sequence if the lance is operated within the cyclone heat exchanger for a longer time.
  • a method for controlling the device is characterized according to the invention in that the running-in process is started in dependence on the caking determined by means of a gamma emitter with associated receiver, in such a way that the drives for generating the intermittent translational and the superimposed rotational movement are activated and the lance is hot Part of the cyclone heat exchanger is retracted, the working cycle of the lance being maintained until the temperature sensor detects an internal lance temperature above 150 o C and causes the lance to automatically extend into the colder area outside the cyclone heat exchanger.
  • the lance can preferably be automatically retracted into the hot area of the cyclone heat exchanger if the internal temperature is below 80 ° C.
  • This control device forms a safety device which, on the one hand, guarantees automatic operation and, on the other hand, virtually eliminates damage to the lance. Operational interruptions are only necessary if there are blockages in the tube of the cyclone that are lower than the maximum extension length of the lance itself. Here, however, there is also the option of decoupling the rotary drive and flanging extension rods on the lance in order to be able to capture these areas that were previously inaccessible.
  • FIG. 1 shows an approach profile, as is often the case when walking through cyclone heat exchangers.
  • the lowest heat exchanger stage 1.2 with the outlet areas 3.4 and the rotary kiln 5 is shown.
  • the heat exchangers 1.2 represent enclosed spaces 6, 7 with corresponding gas outlets 8.9, gas and material inlets 12, 12 'and corresponding ones Spouts 10.11 are provided.
  • Blockages in the outlet areas 10, 11 can occur by detachments of attachments 13 taking place in places, which can arise due to the effects of temperature and circulation processes and block the discharge of flour from time to time. If such a case occurs, the furnace operation must be interrupted.
  • the corresponding blockage must be removed by cleaning personnel, the cleaning personnel being exposed to considerable dangers due to the still relatively high temperatures in the area of the cyclone.
  • FIG. 2 shows the device according to the invention for essentially automatically removing or preventing blockages.
  • the cyclone preheater 1 with its outlet area 10 (drain pipe) is shown in broken lines.
  • the device 14 according to the invention is provided, which is arranged on a lower fastening flange 15.
  • the device 14 is pivotable about a pivot point 16, which is defined on the one hand by the lower fastening flange 15 and on the other hand by a bracket 17. This measure ensures that, as a result of the pivoting away of the entire device 14 in the event of a blockage 13 (FIG. 1) building up from the furnace in the direction of the cyclone heat exchanger 1, rod magazines can be introduced into the outlet area 10 (drain pipe).
  • the device 14 consists of an outer casing tube 18 (housing), a running tube 19, within which an impact and rotary tool 20 is arranged in the form of a lance.
  • a pneumatic cylinder 21 Connected to the tool 20 here is a pneumatic cylinder 21, which is arranged in the inner tube 22 such that it can be moved back and forth in a translatory and intermittent manner.
  • the rotary drive 24 is on a motor console le 25 attached to the housing 18.
  • the power transmission is preferably carried out via a chain drive 26.
  • the entire device 14 is cooled with ambient air, which feeds a radial fan, not shown.
  • an automatically operated gate valve 28 is provided between the mounting flange 15 and the device 14, which separates the device 14 from the hot part of the heat exchanger system 1 in the rest position.
  • the area 29 is to be regarded as an intermediate piece between the cyclone 1 and the drain pipe 10.
  • the center line 30 of the lance 20 corresponds approximately to the center line 31 of the drain pipe 10.
  • the guide elements of the lance 20, not shown in this figure, come to rest on the chute area 32 of the intermediate piece 29, provided the lance 20 is inserted deeper into the drain pipe 10 thus prevent the lance 20 from bending too much.
  • a device 33 for generating gamma rays with associated receiver 34 is provided, which automatically starts the entire device 14 as soon as caking occurs. Additional gamma emitters can also be provided in the drain pipe 10 in order to be able to react as quickly as possible to impending blockages.
  • FIG. 3 shows the device 14 according to the invention in a side view.
  • the housing 18, the lance-shaped tool 20 and the flange 15 and the bracket 17 can be seen, by means of which the entire device 14 can be fastened to the cyclone heat exchanger 1 shown in FIG.
  • the lance 20 is displaceable relative to the housing 18 by means of guide elements 35, which come to rest on the chute area 32 shown in FIG.
  • a drill head 36 is provided on the lance tip, which is formed on the one hand from a flat chisel 37 and on the other hand from fangs 38.
  • the wear elements 37 and 38 are displaceably displaced on the drill head 36.
  • the wear elements 37 can be exchanged without any problems and 38 can be made.
  • the rotary drive (not shown further here) is flanged in the area 25.
  • the lines 40 and 41 serve on the one hand to act upon the pneumatic cylinder 21 and on the other hand to cool the entire device 14 with ambient air.
  • a temperature sensor 42 is provided to prevent the to damage to the drill bit 36 or the entire device 14 causes the lance 20 with a lance internal temperature of about 150 o C automatically into the colder region outside the cyclone heat exchanger 1 is reduced. If the temperature has dropped below 80 ° C. again, the lance 20 can be moved back into the cyclone heat exchanger 1 or its region 29 or the drain pipe 10 if necessary.
  • Figure 4 shows a section along the line a-b.
  • the housing 18, the lance 20 with the guide elements 35 and the pneumatic cylinder 21 can be seen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cyclones (AREA)
  • Furnace Details (AREA)
  • Earth Drilling (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP89121270A 1989-06-16 1989-11-17 Procédé et dispositif pour empêcher et le cas échéant éliminer les bouchons dans l'apex d'un cyclone d'échange thermique Expired - Lifetime EP0406481B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89121270T ATE89918T1 (de) 1989-06-16 1989-11-17 Einrichtung und verfahren zur unterbindung bzw. beseitigung von verstopfungen im auslaufbereich von zyklon-waermetauschern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3919717A DE3919717C1 (fr) 1989-06-16 1989-06-16
DE3919717 1989-06-16

Publications (2)

Publication Number Publication Date
EP0406481A1 true EP0406481A1 (fr) 1991-01-09
EP0406481B1 EP0406481B1 (fr) 1993-05-26

Family

ID=6382886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121270A Expired - Lifetime EP0406481B1 (fr) 1989-06-16 1989-11-17 Procédé et dispositif pour empêcher et le cas échéant éliminer les bouchons dans l'apex d'un cyclone d'échange thermique

Country Status (3)

Country Link
EP (1) EP0406481B1 (fr)
AT (1) ATE89918T1 (fr)
DE (2) DE3919717C1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107429304A (zh) * 2015-02-17 2017-12-01 技术资源有限公司 喷枪疏通方法和设备
CN108773592A (zh) * 2018-06-27 2018-11-09 芜湖万向新元环保科技有限公司 一种下料斗装置
CN111115032A (zh) * 2019-12-23 2020-05-08 张顺元 一种清除预热器仓室结料的装置
CN113776348A (zh) * 2021-08-11 2021-12-10 广西鱼峰水泥股份有限公司 一种水泥窑旋风预热器清堵用防喷涌烫伤装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109046810B (zh) * 2018-09-20 2020-10-27 苏州市信睦知识产权服务有限公司 用于餐厨废弃油脂收集设备的变温疏通装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2848066A (en) * 1955-09-28 1958-08-19 Svenska Flaektfabriken Ab Device for a simultaneous cleansing of the outlets for dust and clean-gas in cyclones
FR1363005A (fr) * 1963-07-13 1964-06-05 Boehler & Co Ag Geb Couronne de curetage
GB2096751A (en) * 1981-04-15 1982-10-20 Hylsa Sa Poking system for shaft furnaces
JPS61209291A (ja) * 1985-03-13 1986-09-17 Nippon Kokan Kk <Nkk> コ−クス炉ガスによるコ−キング付着物の除去方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2848066A (en) * 1955-09-28 1958-08-19 Svenska Flaektfabriken Ab Device for a simultaneous cleansing of the outlets for dust and clean-gas in cyclones
FR1363005A (fr) * 1963-07-13 1964-06-05 Boehler & Co Ag Geb Couronne de curetage
GB2096751A (en) * 1981-04-15 1982-10-20 Hylsa Sa Poking system for shaft furnaces
JPS61209291A (ja) * 1985-03-13 1986-09-17 Nippon Kokan Kk <Nkk> コ−クス炉ガスによるコ−キング付着物の除去方法

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107429304A (zh) * 2015-02-17 2017-12-01 技术资源有限公司 喷枪疏通方法和设备
EP3259376A4 (fr) * 2015-02-17 2018-07-25 Tata Steel Limited Procédé et appareil de débouchage de lance
CN107429304B (zh) * 2015-02-17 2019-09-17 塔塔钢铁公司 喷枪疏通方法和设备
CN108773592A (zh) * 2018-06-27 2018-11-09 芜湖万向新元环保科技有限公司 一种下料斗装置
CN108773592B (zh) * 2018-06-27 2019-12-31 芜湖万向新元环保科技有限公司 一种下料斗装置
CN111115032A (zh) * 2019-12-23 2020-05-08 张顺元 一种清除预热器仓室结料的装置
CN113776348A (zh) * 2021-08-11 2021-12-10 广西鱼峰水泥股份有限公司 一种水泥窑旋风预热器清堵用防喷涌烫伤装置
CN113776348B (zh) * 2021-08-11 2023-10-31 广西鱼峰水泥股份有限公司 一种水泥窑旋风预热器清堵用防喷涌烫伤装置

Also Published As

Publication number Publication date
DE58904514D1 (de) 1993-07-01
DE3919717C1 (fr) 1990-10-18
EP0406481B1 (fr) 1993-05-26
ATE89918T1 (de) 1993-06-15

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