EP2534287B1 - Oxidationsofen - Google Patents

Oxidationsofen Download PDF

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Publication number
EP2534287B1
EP2534287B1 EP11701767.3A EP11701767A EP2534287B1 EP 2534287 B1 EP2534287 B1 EP 2534287B1 EP 11701767 A EP11701767 A EP 11701767A EP 2534287 B1 EP2534287 B1 EP 2534287B1
Authority
EP
European Patent Office
Prior art keywords
process chamber
oxidation furnace
blowing
boxes
hot air
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.)
Active
Application number
EP11701767.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2534287A1 (de
Inventor
Karl Berner
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.)
Eisenmann SE
Original Assignee
Eisenmann SE
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Filing date
Publication date
Application filed by Eisenmann SE filed Critical Eisenmann SE
Publication of EP2534287A1 publication Critical patent/EP2534287A1/de
Application granted granted Critical
Publication of EP2534287B1 publication Critical patent/EP2534287B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/32—Apparatus therefor
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
    • 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
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers

Definitions

  • the Einblashimsten forming the injection device have continuous upper and lower sides and have outlet openings for the hot air only at the opposite narrow end faces. This means that the interspaces between superposed blow boxes are not or at least not flowed through in a defined manner by hot air and the fibers are not treated oxidatively in the passage of these spaces. Since, for reasons of air distribution, the blow boxes must have not insignificant dimensions, the routes in which lack of air flow, an oxidative treatment of the fibers does not take place, quite significant.
  • Another oxidation furnace is from the EP 0 426 858 A1 known. There, the fibers are perpendicular to the fiber direction blown.
  • oxidation furnaces are the US 4 559 010 , of the US 5,263,265 , of the EP 0 848 090 A2 or the JP 2009- 242 962 refer to.
  • Object of the present invention is to provide an oxidation furnace of the type mentioned in such a way that a required distance of the oxidative treatment of the fibers housed in a smaller volume of the furnace, in particular the furnace can be built lower.
  • the dimensions of the mounting boxes in the direction of movement of the fiber are smaller held, such that the volume of two successive Einblashimsten corresponds to the total volume of a single injection box in the conventional construction. Due to the distance between the two blow boxes, it is possible that forms in the spaces between superimposed blow-in flows of hot air, which have not found so in the prior art. The spaces between superimposed blow boxes can actively participate in the oxidative treatment of the fibers in this way.
  • the second design alternative is where the volume of the individual blow boxes may be substantially the same as conventional designs.
  • additional air outlet openings again gives the opportunity to flow through the spaces between superimposed blow-in hot air, so that the sections lying there fibers can participate in the oxidative process.
  • the furnace can be kept lower.
  • a number of advantages are associated with this: since fewer serpentine passages of the fibers through the process space are required, deflection rollers for the threads and lock devices, which prevent air from escaping in the region of the entry and exit of the threads into the process space, can be saved ,
  • there is a weight saving for the entire furnace which is good for the Cost of a steel construction on which the furnace is built, has a favorable effect.
  • the quality of the product obtained increases due to the better air circulation of the threads in the process area.
  • the horizontal distance between juxtaposed stacks of blow boxes is equal to twice the vertical distance between the blow boxes in the stack and at most equal to the dimension of a blow box in the longitudinal direction of the furnace. In this way, defined flow conditions result in the area between the stacks and in the areas between superposed Einblashimsten.
  • the blow boxes have a plurality of additional hot air outlets along a center line on the top and bottom. This measure also serves the controlled guidance of the hot air.
  • the oxidation furnace according to the invention is particularly suitable for the production of carbon fibers.
  • the oxidation furnace 1 comprises a housing 2, which in turn is composed of two vertical longitudinal walls 2a, 2b, two vertical end walls 2c, 2d, a top wall 2e and a bottom wall 2f.
  • the housing 2 is gas-tight with the exception of two areas 3, 4 in the end walls 2c and 2d, in which the fibers to be treated 20 are executed and executed and which are provided with special lock devices, gas-tight.
  • the interior of the housing 2 is divided by a vertical partition 5 in the actual process chamber 6 and laterally of this lying air ducts 7, 8, 9, 10, 11, 12.
  • the interior of the oxidation furnace 1 is substantially mirror-symmetrical to that in FIG FIG. 2 indicated vertical center plane SS formed.
  • two counter-rotating air circuits are maintained: Starting, for example, from the suction devices 14, 15, the air in the sense of in FIG. 2 recognizable arrows through the air ducts 7 and 12 to a filter 16 or 17 and then passed through a heating unit 32a and 32b in the air guide 8 and 11 respectively. From the air duct 8 and 11, the heated air is sucked by a fan 31 a and 31 b and in the Air ducts 9 and 10 blown. From there, the air passes in each case into one half of the injection device 13 described in more detail below, from there flowing in opposite directions into the process chamber 6 and from there to the suction device 14 or 15, whereby the two air circuits are closed.
  • outlets 30a, 30b are provided in the wall of the housing 2. These can be used to remove those gas or air volumes which either arise during the oxidation process or enter the process space 6 as fresh air via the inlet and outlet areas 3, 4 in order to maintain the air balance in the oxidation furnace 1.
  • the discharged gases which may also contain toxic components are fed to a thermal afterburning. The heat thereby obtained can be used at least for pre-damping the fresh air supplied to the oxidation furnace 1.
  • the injector 13 is constructed in detail as follows:
  • blow boxes 18 It comprises two “stacks" of blow boxes 18.
  • Each of these blow boxes 18 has the shape of a hollow cuboid, wherein the longer dimension extends transversely to the longitudinal direction of the process space 6 over its entire width.
  • the respective narrow sides of the injection boxes 18 facing the process space 6 are designed as perforated plates 18a.
  • one end face of each injection box 18 is connected to the air duct 9 or air duct 10 in such a way that the air conveyed by the fan 31a or 31b is blown into the interior of the respective injection box 18 and can exit from there via the perforated metal sheets 18a.
  • blow boxes 18 in each of the two stacks are arranged one above the other at a slight distance; the two stacks of blow boxes 18 are again, viewed in the longitudinal direction of the furnace or movement direction of the threads 20, also spaced from each other. Ideally (and deviating from the ones in FIG. 1 shown ratios) is the vertical distance between two blow boxes 18 in a stack the same as the distance between the two stacks 18 in the longitudinal direction of the process space. 6
  • the two suction devices 14, 15 are essentially formed by a respective stack of suction boxes 19, which extend in a transverse manner through the entire process space 6 in a manner similar to the blow boxes 18 and are formed as perforated plates 19a on their narrow sides running transversely to the longitudinal extent of the process space 6 are.
  • the holes of the perforated plates 19a can have any geometric shape.
  • the suction boxes 19 in the suction devices 14, 15 have the same vertical distance from each other as the blow boxes 18 in the injection device 13.
  • the fibers 20 to be treated are fed to the oxidation furnace 1 via a deflection roller 21 and pass through a lock device 22, which in the present context is not of interest and serves to prevent gas from escaping out of the process chamber 6 to the outside.
  • the fibers 20 are then through the spaces between superimposed suction boxes 19, through the process space 6, through the spaces between superposed Einblashimsten 18 in the Einblas observed 13, through the gap between superimposing Absauglasten 19 at the opposite end of the process chamber 6 and through a further lock device 23 led.
  • the described passage of the fibers 20 through the process space 6 is repeated several times in a serpentine manner, for which purpose a plurality of deflecting rollers 24 and 25 lying parallel one above the other with their axes are provided in both end regions of the oxidation furnace 1. After the uppermost passage through the process chamber 6, the fiber 20 leaves the oxidation furnace 1 and is thereby guided over a further deflection roller 26.
  • FIG. 3 shows how the air flows in the region of the injection device 13 run. Due to the perforated plates 18a provided on both narrow longitudinal sides of the inlet boxes 18, the air injected into the interior of each injection box 18 from the corresponding fan 31a or 31b can exit at both opposite sides of the injection box 18. In the area of the gap between two stacks of blow-in boxes 18, the air flows hit each other in opposite directions as shown in FIG. This has the consequence that the air bends there and flows through the gap between superposed Einblashimsten 18 in each of the two stacks in the direction of the opposite end portions of the process chamber 6 and thus to the corresponding suction device 14, 15. This part of the air discharged from the blower 18 flows around the fibers 20 also in the sections, which lie between the blow boxes 18.
  • FIGS. 4 and 5 show an injection box 118, which can be used in an alternative embodiment of an oxidation furnace and in each case a pair of blow boxes 18 of FIGS. 1 to 3 can substitute in this embodiment at the same height side by side in two different "stacks".
  • a unitary Einblaskasten 118 is used, the dimension seen parallel to the longitudinal direction of the process chamber 6 of the sum of the corresponding dimensions of two blow boxes 18 FIG. 1 equivalent.
  • FIGS. 4 and 5 be the air ducts 9 and 10 of the FIG. 2 unites and feeds the blow boxes 118 together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Fibers (AREA)
  • Tunnel Furnaces (AREA)
EP11701767.3A 2010-02-09 2011-01-29 Oxidationsofen Active EP2534287B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010007480 DE102010007480B3 (de) 2010-02-09 2010-02-09 Oxidationsofen
PCT/EP2011/000415 WO2011098223A1 (de) 2010-02-09 2011-01-29 Oxidationsofen

Publications (2)

Publication Number Publication Date
EP2534287A1 EP2534287A1 (de) 2012-12-19
EP2534287B1 true EP2534287B1 (de) 2014-11-05

Family

ID=44220316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11701767.3A Active EP2534287B1 (de) 2010-02-09 2011-01-29 Oxidationsofen

Country Status (6)

Country Link
EP (1) EP2534287B1 (zh)
JP (1) JP5856082B2 (zh)
CN (1) CN102782198B (zh)
DE (1) DE102010007480B3 (zh)
ES (1) ES2526296T3 (zh)
WO (1) WO2011098223A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014009244A1 (de) * 2014-06-20 2016-01-07 Eisenmann Ag Oxidationsofen

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9217212B2 (en) 2011-01-21 2015-12-22 Despatch Industries Limited Partnership Oven with gas circulation system and method
US9598795B2 (en) * 2013-04-26 2017-03-21 Illinois Tool Works Inc. Fiber oxidation oven with multiple independently controllable heating systems
DE102013015841B4 (de) * 2013-09-24 2020-03-26 Eisenmann Se Oxidationsofen
US10676847B2 (en) * 2014-11-07 2020-06-09 Illinois Tool Works Inc. Discharge nozzle plate for center-to-ends fiber oxidation oven
US10458710B2 (en) 2014-11-07 2019-10-29 Illinois Tool Works Inc. Supply plenum for center-to-ends fiber oxidation oven
JP2017089050A (ja) * 2015-11-10 2017-05-25 東邦テナックス株式会社 炭素繊維の製造方法及び耐炎化繊維の製造方法
DE102016116057A1 (de) * 2016-08-29 2018-03-15 Eisenmann Se Oxidationsofen
CN110578190B (zh) * 2019-09-18 2024-03-15 浙江精工集成科技股份有限公司 一种预氧化炉回风口网孔板的在线抽插结构及预氧化炉
CN110578186B (zh) * 2019-09-18 2024-03-15 浙江精工集成科技股份有限公司 一种端对端吹风结构的预氧化炉
CN110485000B (zh) * 2019-09-18 2023-06-09 浙江精工集成科技股份有限公司 一种预氧化炉
EP4123065A1 (en) 2020-03-18 2023-01-25 Toray Industries, Inc. Flame resistant fiber bundles, carbon fiber bundle production method, and flame resistant furnace
CN114351292B (zh) * 2022-02-11 2022-09-09 新创碳谷控股有限公司 一种多规格丝束适应型碳纤维预氧化炉

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4515561A (en) * 1983-03-07 1985-05-07 Despatch Industries, Inc. Fiber treatment oven
US4559010A (en) * 1984-05-01 1985-12-17 Toray Industries, Inc. Apparatus for producing oxidized filaments
EP0426858B1 (en) * 1989-02-23 1996-07-10 Mitsubishi Rayon Co., Ltd. Flameproofing apparatus
JP2971498B2 (ja) * 1989-02-23 1999-11-08 三菱レイヨン株式会社 耐炎化処理装置
US5263265A (en) * 1989-10-23 1993-11-23 Despatch Industries Convection/radiation material treatment oven
JPH04108117A (ja) * 1990-08-21 1992-04-09 Mitsubishi Rayon Co Ltd 耐炎化処理装置
DE69706028T2 (de) * 1996-12-16 2001-11-29 Toray Industries Wärmebehandlungsofen für Fasern
JP5207796B2 (ja) * 2008-03-28 2013-06-12 三菱レイヨン株式会社 耐炎化処理装置および前駆体繊維束の耐炎化処理方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014009244A1 (de) * 2014-06-20 2016-01-07 Eisenmann Ag Oxidationsofen
DE102014009244B4 (de) * 2014-06-20 2016-07-28 Eisenmann Se Oxidationsofen
US11236444B2 (en) 2014-06-20 2022-02-01 Eisenmann Se Oxidation furnace

Also Published As

Publication number Publication date
JP2013519005A (ja) 2013-05-23
JP5856082B2 (ja) 2016-02-09
WO2011098223A1 (de) 2011-08-18
CN102782198A (zh) 2012-11-14
EP2534287A1 (de) 2012-12-19
ES2526296T3 (es) 2015-01-09
DE102010007480B3 (de) 2011-07-21
CN102782198B (zh) 2014-09-03

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