WO2002077337A1 - Flame resistant rendering heat treating device, and operation method for the device - Google Patents
Flame resistant rendering heat treating device, and operation method for the device Download PDFInfo
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- WO2002077337A1 WO2002077337A1 PCT/JP2002/002720 JP0202720W WO02077337A1 WO 2002077337 A1 WO2002077337 A1 WO 2002077337A1 JP 0202720 W JP0202720 W JP 0202720W WO 02077337 A1 WO02077337 A1 WO 02077337A1
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- Prior art keywords
- heat treatment
- hot air
- treatment chamber
- fiber strand
- fiber
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- 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
Definitions
- the present invention relates to a flameproofing heat treatment apparatus used for producing a polyacrylonitrile-based flameproofed fiber, and more particularly, to a flameproofing heat treatment apparatus for flameproofing a polyacrylonitrile-based fiber strand and the like, and an operation method of the apparatus.
- Flame-resistant fibers are important as heat-resistant fibers and as raw materials for producing polyacrylonitrile-based carbon fibers. Background art
- polyacrylonitrile-based oxidized fibers are produced by subjecting polyacrylonitrile-based fibers to oxidizing heat treatment in an oxidizing atmosphere of 20 O: up to 300 ° C.
- the reaction in the heat treatment for oxidizing polyacrylonitrile fibers is an exothermic reaction in which oxidation and cyclization proceed simultaneously. If the heat treatment is performed at a high temperature, the reaction rate becomes higher and the processing time is shortened. However, if the heat treatment is performed rapidly, the heat of reaction associated with the oxidation reaction is accumulated in the fiber, and the temperature inside the fiber rises rapidly. As a result, a runaway reaction involving yarn breakage and ignition is likely to be induced.
- the heat treatment for oxidization is usually performed in the form of a strand in which a large number of fibers are bundled. If a large number of strands are simultaneously subjected to flame-resistant heat treatment to increase production efficiency, the strands are easy to store heat, so they can be flame-resistant at high temperature and in a short time without efficiently removing the reaction heat from the fiber. Fiber strands cannot be obtained efficiently.
- FIG. 10 is a schematic view showing an example of a conventional oxidizing heat treatment apparatus, in which (A) is a front sectional view, (B) is a side sectional view, and (C) is a plan sectional view.
- reference numeral 52 denotes an oxidizing heat treatment apparatus.
- a multi-stage path 57 a, 57 formed by a number of horizontally arranged strands 56 is provided in the heat treatment chamber 54.
- b, 57 ⁇ , ⁇ ⁇ ⁇ 57 7 is running.
- the strands 56 are folded back by a predetermined set of folding rollers 58 arranged outside the heat treatment chamber 54, and are repeatedly supplied to the heat treatment chamber 54.
- the strands 56 forming the multi-stage paths have outer walls 60 a, inner walls 62 a, inner walls 62 b, and an outer wall 60 of the oxidizing heat treatment apparatus 52. It enters and exits the heat treatment chamber 54 through the respective slits 64a, 66a, 66b, and 64b formed in the outer wall 60b.
- an outer wall 69a is formed outside one inner wall 68a, and a hot air circulation path is formed between the inner wall 68a and the outer wall 69a.
- 74a is formed.
- the upper flow path 70 and the lower flow path 72 of the heat treatment chamber 54 are communicated with each other by the hot air circulation path 74a.
- the hot air heated by the heater 76a provided in the hot air circulation path 74a is sent into the heat treatment chamber 54 through the upper flow path 70 by the fan 78a, and then passes through the path. It is sent downward through the formed and running strands 56, where the strands 56 are subjected to an oxidizing heat treatment.
- the hot air also plays a role in heating the strand and removing heat at the same time.
- the hot air is sent through the lower flow path 72 to the hot air circulation path 74a, When passing through here, heating by the heater 76a is repeated.
- an outer wall 69b is formed outside the other inner wall 68b in the left half of the heat treatment chamber 54. Between the inner wall 68b and the outer wall 69b, a heat-insulated vacancy 80a is formed.
- the right half of the heat treatment chamber 54 shown in FIG. 10 (C) is formed to be antisymmetric with the left half. That is, a heat insulating chamber 80b is formed between the inner wall 68a and the outer wall 69a. Similarly, between the inner wall 6 8b and the outer wall 6 9b, there is provided a hot air circulation path 7 4b for communicating the upper flow path 70 and the lower flow path 72 of the heat treatment chamber 54. ing. 76 b is a heater and 78 b is a fan.
- the outer periphery of the entire apparatus is covered with a heat insulating material.
- the temperature near the inner side walls 68 a and 68 b in the heat treatment chamber 54 is lower than the average temperature inside the heat treatment chamber 54. Therefore, the heat treatment rate of the strands near the inner walls 68a and 68b is low, and the strands are not uniformly heat-treated.
- the strands 56 are usually run at a distance of about 200 mm from the side walls 68a and 68b, respectively.
- a plurality of strands 56 constituting one pass may be run as one zone in which the strands are uniformly arranged.
- one pass is divided into multiple zones, rather than one pass composed of one zone.
- the two paths are divided into 59a and 59b. It is easier to handle with a predetermined gap X between each zone. For example, when a strand forming a path is running in one zone and a trouble such as fiber breakage occurs, There is a high risk that the strands will be involved, increasing trouble one after another, causing damage to the entire strands. It may also be necessary to work between the strands. For these reasons, it is preferable to divide one pass into a plurality of zones and provide a predetermined gap between each zone.
- a typical oxidizing heat treatment apparatus divides the strand 56 forming the path into a plurality of zones, keeps the distance between the inner wall and the path at about 200 mm, and furthermore, the distance between each zone is 2 mm. With a gap of about 100 mm, the strands are subjected to heat treatment for flame resistance.
- the above-mentioned flame-resistant heat treatment apparatus When the above-mentioned flame-resistant heat treatment apparatus is used to form a multi-stage path in the heat treatment chamber in the vertical direction in the heat treatment chamber and perform the heat treatment for the flame resistance, the number of strands in the heat treatment chamber is increased to increase productivity. Then, the ventilation resistance of the hot air increases and the passing wind speed of the hot air passing through the path decreases significantly. This results in insufficient strand cooling. As a result, the heat accumulates in the strand, and further the fiber is cut by the heat accumulation. In addition, the cut fibers become entangled with the fibers of other strands, increasing the trouble. In addition, the above-mentioned troubles in the heat treatment for oxidizing polyacrylonitrile-based fibers may cause a fire. Since such a serious trouble occurs, the productivity of the flame-resistant fiber has not been significantly improved conventionally. Disclosure of the invention
- the present inventor considered that the cause of the decrease in the hot air velocity when passing through the pass was due to the concentration of hot air between the pass and the inner wall and between the zones.
- the velocity of the hot air passing through the path tends to decrease remarkably, especially in the lower pass, and fiber cutting frequently occurs in the lower pass.
- the velocity of hot air passing through the strand of the uppermost path on the upstream side of hot air is 1.8 m / sec
- the velocity of air flowing through the strand of the middle path located downstream of hot air is 0. May drop to 3 m / s.
- the reaction heat generated by the oxidation reaction of the strands is less likely to be removed by the hot air as going toward the lower path.
- the reaction heat generated from the strands in the upper pass on the upstream side of the hot air is transferred to the downstream side of the hot air by the hot air.
- the strands in the lower pass stored heat and became high temperature, and uniform heat treatment for oxidization was not performed.
- the downstream strand may cause a runaway reaction and ignite.
- the present invention has been completed based on the above considerations.
- the drift prevention plate has an air permeable hole [1]
- a plurality of slits into and out of which fiber strands that run horizontally while turning back are provided, and a hot air is sent vertically from above the fiber strands to heat-treat the fiber strands. Hot air is supplied to the heat treatment chamber.
- a plurality of turn-up holes provided on both outer sides of the oxidization furnace, the fiber sluices entering and exiting from the plurality of slits.
- An oxidizing heat treatment apparatus wherein a gap is formed to be 150 mm or less and a heating means is provided on the side wall or the slit.
- At least one of the lower slits corresponding to 70% of the total number of slits has a nozzle whose air blowing direction is directed to the outside of the heat treatment chamber.
- a flameproofing heat treatment apparatus comprising: a folding roller that folds a fiber strand that enters and exits a slit and returns the fiber strand to an oxidizing furnace.
- the gap between the fiber strand and the drift prevention plate inserted between the fiber strand and the side wall parallel to the running direction of the fiber strand and the fiber strand are formed to be 150 mm or less.
- the hot wind speed passing through the fiber strands other than the top is maintained at 20% or more of the hot wind speed passing through the top fiber strand. How to operate the heat treatment equipment.
- FIG. 1 to 4 are schematic sectional front views each showing a different example of the oxidizing heat treatment apparatus of the present invention.
- FIG. 5 is a schematic cross-sectional view showing another example of the flameproofing heat treatment apparatus of the present invention, where (A) is a perspective front view and (B) is a perspective side view.
- FIG. 6 is a sectional plan view of the flameproofing device shown in FIG.
- FIG. 7 is an enlarged view of the part A shown in FIG. 5 (B).
- FIG. 8 is a schematic sectional view showing another example of the nozzle.
- FIG. 9 is a schematic sectional view showing still another example of the nozzle.
- 10A and 10B schematically show a conventional oxidizing heat treatment apparatus, in which FIG. 10A is a front sectional view, FIG.
- FIG. 10B is a side sectional view
- FIG. 10C is a plan sectional view.
- 2 Oxidation heat treatment equipment, 4 Heat treatment room, 6 strands, 8a and 8b side walls, 10 Upper hot air flow path, 1 2 Lower hot air flow path, 1 4 Hot air circulation Road, 16 spaces, 18 heaters, 20 fans, P gap, 22 heat treatment chambers, 24a and 24b inner walls, 26a and 26b hot air passages, 28 oxidation heat treatment equipment , 30a and 3Ob outer wall, 32 strand, 48 Oxidation heat treatment equipment, 44a and 44b side wall, 46a and 46b heating means, 50 strand, 500 pass, 5 1 0 and 5 1 2 zone, L interval, M interval, N interval, 102 Oxidation furnace, 104 a Front outer wall, 106 a Front inner wall, 106 b Back inner wall, 104 b Back outer wall , 108 a and 108 b slits, 1 12 a left outer wall, 1 14 a left
- FIG. 1 is a schematic sectional front view showing an example of an oxidizing heat treatment apparatus according to the present invention.
- reference numeral 2 denotes an oxidizing heat treatment apparatus, and a plurality of strands 6 are contained in a heat treatment chamber 4 formed therein. Is running (in this figure, the running direction of the strand is perpendicular to the plane of the paper). The strands 6 are arranged in parallel with each other, thereby forming one horizontal path. Further, a plurality of paths (seven paths in this figure) are arranged from above to below at predetermined intervals. The strand 6 forming this path is turned back by a predetermined set of turning rollers 1 (not shown) provided outside the heat treatment chamber 4, and is repeatedly supplied to the heat treatment chamber 4.
- the side walls 8 a and 8 b of the heat treatment chamber 4 are parallel to the running direction of the strand 6.
- a hot air circulation path 14 is formed outside the one side wall 8a.
- a space 16 is formed between the side wall 8 a and the hot air circulation path 14.
- the upper hot air flow path 10 and the lower hot air flow path 12 of the heat treatment chamber 4 are connected by the hot air circulation path 14.
- the upper hot air flow path 10, the lower hot air flow path 12, and the hot air circulation path 14 constitute hot air supply means.
- Reference numeral 18 denotes a heater, which is provided in the hot air circulation path 14.
- the hot air heated by the heater 14 is sent into the heat treatment chamber 4 by the fan 20 through the hot air flow path 10 above the heat treatment chamber 4, and then flows down in the heat treatment chamber 4.
- the formed and running strand 6 is subjected to a heat treatment for oxidization resistance. Thereafter, the hot air is sent to the lower portion of the hot air circulation path 14 through the lower hot air flow path 12, and is repeatedly circulated to the heater 18 through the hot air circulation path 14.
- the gap P between the side walls 8a and 8b and the strands at both ends of the path is 150 mm or less, preferably 50 mm or less, more preferably 5 to 20 mm. mm.
- the gap P is 150 mm or less, preferably 50 mm or less, more preferably 5 to 20 mm. mm.
- outside walls 30a and 30b are added to the outside of the inside walls 24a and 24b of the heat treatment chamber 22, respectively.
- Hot air passages 26a, 26 as side wall heating means for preventing a temperature drop between the inner wall 24a and the outer wall 30a, and between the inner wall 24b and the outer wall 30b. b is formed.
- the gap P between the inner side walls 24a and 24b and the strands at both ends of the path is set to 150 mm or less, preferably 50 mm or less, more preferably 5 to 20 mm.
- Other configurations are the same as those of the oxidation heat treatment apparatus shown in FIG.
- the hot air passages 26a and 26b are provided as heating means for the side walls, so that the temperature of the side walls 24a and 24b is prevented from lowering.
- the width of the gap between the side walls of the double structure is not particularly limited, but is usually preferably 100 to 200 mm.
- FIG. 3 shows still another example of the oxidizing heat treatment apparatus of the present invention.
- the oxidizing heat treatment apparatus 48 includes heating means 46a and 46b outside the side walls 44a and 44b.
- the heating means is not particularly limited, and examples thereof include an electric heater and a steam heater. By this heating means, the difference between the temperature in the heat treatment chamber and the side wall temperature can be made 10 ° C or less.
- the gap P between 44b and the strands 50 at both ends of the path is 150 mm or less, preferably 50 mm or less, more preferably 5 to 20 mm.
- Other configurations are the same as those of the oxidizing heat treatment apparatus shown in FIGS.
- each of the above-mentioned flameproofing heat treatment apparatuses is configured so that the gap P between the side wall and the strand constituting the path is 150 mm or less, hot air does not concentrate on this gap P. Since the hot air passes uniformly between the strands throughout the entire pass, a decrease in the wind speed of the hot air from the upper pass to the lower pass is suppressed.
- FIG. 5 is a schematic cross-sectional view showing an example of the oxidizing heat treatment apparatus of the present invention, in which (A) is a front perspective view and (B) is a side perspective view.
- FIG. 6 is a plan sectional view of the same device.
- FIG. 7 is an enlarged view of a portion indicated by A in FIG. 5 (B).
- the direction is indicated mainly by referring to Fig. 5 (A)
- the front of the paper of Fig. 5 is the front
- the back of the paper is the back
- the left, right, top, bottom, etc. Expression is used.
- reference numeral 102 denotes an oxidation furnace. From the front to the back of the oxidation furnace 102 in FIG.
- 104a is the front outer wall
- 106a is the front inner wall
- 106 b is the back inner wall
- 104 b is the back outer wall.
- Each of these walls has the same number of slits 108a as the number of passes from the front outer wall 104a to the front inner wall 106a.
- the number of slits 108 b is equal to the number of passes from the back outer wall 10 b to the back inner wall 106 b.
- the left side wall 1 1 2a, left inner side wall 14a, right inner side wall 1 1 4b, and right outer side wall 1 1 1 2 b is provided.
- the oxidizing furnace 102 consists of an upper outer wall 1 16a, an upper ventilation plate 1 18a, and a lower ventilation plate 1 1 1 from top to bottom. 8 b and the lower outer wall 1 16 b are provided.
- a heat treatment chamber 120 is formed.
- heat treatment chamber 120 front outer wall 104a, back outer wall 104b, left inner wall 114a, right inner wall 114b, upper outer wall 116a, and upper ventilation plate
- An upper channel 122 is formed in the area surrounded by 118 a).
- Below the heat treatment chamber 120 front outer wall 104 a, back outer wall 104 b, left inner wall 114 b, right inner wall 114 b, lower outer wall 116 b, and lower ventilation plate 1
- a lower channel 124 is formed in the area surrounded by 18b).
- a hot air circulation path communicating with the upper flow path 122 and the lower flow path 124 of the heat treatment chamber is provided outside the left inner wall 114a.
- This strand 130 is formed of a slit 108a formed from the front outer wall 104a to the front inner wall 106a, and a slit formed from the back outer wall 104b to the back inner wall 106b.
- G. Enter and exit the heat treatment room 120 through 108 b.
- the strand 130 runs horizontally.
- the strands 130 are folded back by a predetermined set of folding rollers 1332a and 132b arranged outside the flame-proof furnace 102, and a plurality of strands are arranged from top to bottom. In the figure, 5 passes) are formed and supplied to the heat treatment chamber 120.
- the strands that make up each path and run are divided into multiple zones (two zones in this figure) parallel to the running direction.
- the distances S and T between are more than 100 mm and more preferably 150 to 200 mm.
- these gaps are provided with drift prevention plates 1338a, 1338b, and 1338c, respectively. It is preferable that the drift prevention plate is provided for every pass from top to bottom (5 passes in this example).
- the gaps R, S, and T are closed, and the gap is formed between the fiber strand that travels in the heat treatment chamber by forming the zone and the drift preventing plate, or A drift inserted between the fiber strand and the side wall parallel to the running direction of the fiber strand
- the gap between the prevention plate and the fiber strand is formed to be 150 mm or less, preferably 50 mm or less, more preferably 5 to 2 Omm, to make the hot air velocity uniform.
- drift preventing plate members 1338a, 138b, and 138c plate members having no air permeability, for example, non-porous flat plates can be used.
- a punching plate or a wire mesh is used as the drift prevention plates 38a, 38b, and 38c.
- the perforated air-permeable, drift-preventing plate material is more preferable.
- the aperture ratio of the plate for preventing drift is preferably 60% or less.
- the hole diameter of the air-permeable plate is preferably 5 mm ⁇ or more. By making the hole diameter 5 m ⁇ or more, it is easy to clean and the strand fuzz is hard to clog.
- the flameproofing heat treatment apparatus of the present invention is provided with a hot air circulation means inside each hot air circulation path, preferably at the upper and / or lower part of the hot air circulation path.
- a hot air circulation means inside each hot air circulation path, preferably at the upper and / or lower part of the hot air circulation path.
- FIG. 5 ( ⁇ ) between the upper flow path 122 of the heat treatment chamber 120 and the hot air circulation path 126 a, and the lower flow path 124 of the heat treatment chamber 120 and the hot air
- Hot air circulation means 142 a and 142 c can be provided between the circulation path 26 a and the circulation path 26 a.
- these hot air circulation means 142a and 142c a fan, a blower, or the like can be used.
- a sirocco blower having two hot air suction ports is preferable.
- the hot air is sucked and collected from the lower flow path 124 of the heat treatment chamber 120 by the hot air circulation means 142c into the hot air circulation path 126a, and the collected hot air is collected by the hot air circulation means 1442a.
- the air is blown from 26a toward the upper flow path 122 of the heat treatment chamber 120.
- these hot air circulation paths 1 26a and 1 26b Ventilation resistance members 140a and 140b for adjusting the velocity of the hot air passing through the hot air circulation path can be provided.
- Examples of the ventilation resistance members 140a and 14Ob include a damper and the like.
- the ventilation resistance for example, the opening degree of the damper
- the lower flow path 1 of the heat treatment chamber 120 is controlled by the circulation means 144c.
- the wind speed at which the hot air is sucked and collected from the hot air circulation path 1 to the hot air circulation path 1 2 6 a and 1 2 6 b (not shown), and the hot air circulation path 1 2 6 a and 1 2 6 b by the hot air circulation means 1 4 2 a (Not shown) the wind speed supplied to the upper channel 122 of the heat treatment chamber 120 can be adjusted.
- Hot air can be adjusted to the wind speed.
- a permeable member 144 is provided over the entire lower end side of the heat treatment chamber 120, and further below the lower permeable plate 1 18b is provided over the entire lower end side. Mounting is preferred.
- the air permeable member 144 is preferably a wire mesh, grating, or the like having an opening ratio of 50% or more.
- the lower ventilation plate 118b is intended to make the flow rate of hot air uniform, and is preferably a punch board having a high rectifying effect.
- the permeable member 144 be provided at a distance of 20 mm or more above the lower ventilation plate 118b.
- the air-permeable member 144 prevents the strand cut during the oxidization-resistant heat treatment from falling and accumulating on the lower ventilation plate 118b to block the ventilation holes of the lower ventilation plate 118b.
- the cut strand falls on the lower air-permeable plate 118b and accumulates. In this case, the lower ventilation plate The ventilation holes are blocked and the velocity of the hot air partially decreases. As a result, the strands undergoing the heat treatment for flame resistance accumulate heat and ignite. Providing the air-permeable member 144 is effective for preventing the above heat storage and ignition.
- air or heated air is blown into and supplied from at least one slit formed on each inner wall or outer wall through which the strands entering and exiting the heat treatment chamber pass as described above, Alternatively, it can be blown out of the heat treatment chamber.
- the flow rate of heated air flowing through each path in the heat treatment chamber can be adjusted, the temperature of the heated air can be controlled, and the temperature distribution in the path can be controlled to a minimum.
- the heated air may be simply supplied to the heat treatment chamber through the slit. Further, a nozzle for blowing out heated air may be provided along the slit, and the heated air may be supplied from this nozzle. By blowing out heated air from the nozzle, a gap is formed in the slit, thereby increasing the airtightness of the slit.
- the external air may be supplied to the heat treatment chamber through the slit along with the heated air blown out from the nozzle to compensate for the hot air velocity.
- FIG. 7 shows an example of the nozzle.
- reference numeral 202 denotes a heat treatment chamber wall
- reference numeral 204 denotes an outer wall thereof
- reference numeral 206 denotes an inner wall thereof.
- a slit 208 is formed from the outer wall 204 to the inner wall 206, and the strand 210 enters and exits the heat treatment chamber through the slit 208.
- An upper heated air duct 2 12 and a lower heated air duct 2 14 are provided above and below the slit 208 in the heat treatment chamber wall 202.
- An upper nozzle 2 16 and a lower nozzle 2 18 communicating with these ducts are attached to the ducts 2 12 and 2 14 respectively, with the nozzle tips facing the heat treatment chamber.
- the heated air is blown from the upper nozzle 2 16 and the lower nozzle 2 18 into the heat treatment chamber.
- the nozzle mounting angles of the upper nozzle 2 16 and the lower nozzle 2 18 are adjusted so that the heated air blown from the nozzles cross each other.
- the intersection angle 6 ⁇ is preferably 60 to 120 degrees.
- 220 and 222 are wind speed adjusting plates, and by moving the mounting position of these adjusting plates up and down, it is possible to adjust the speed of the heated air blown from the nozzles 2 16 and 2 18.
- 8 and 9 show other examples of the nozzle that can be used in the present invention.
- reference numerals 302 and 402 denote heat treatment chamber walls
- reference numerals 310 and 408 denote slits.
- 316 and 416 are upper nozzles
- 318 and 418 are lower nozzles.
- the nozzle may be attached to all slits, or may be attached to some slits.
- the nozzle may be attached to the outside of the heat treatment chamber in addition to the tip of the nozzle being attached to the heat treatment chamber.
- a portion of the hot air flowing through the heat treatment chamber is released from the heat treatment chamber to the outside by entraining it with the air blown from the nozzle installed outward, thereby adjusting the speed of the hot air and further allowing the outside air to enter the heat treatment chamber. Can be prevented from invading.
- the nozzle having the tip of the nozzle directed to the outside of the heat treatment chamber is attached to at least one of the lower slits corresponding to 70% of the total number of slits.
- the hot air velocity passing through the lowermost path on the downstream side of the hot air is set to 20% of the hot air velocity passing through the uppermost path on the upstream side of the hot air. Or more, more preferably 30% or more.
- a nozzle for blowing heated air is connected to the side where the strand enters the heat treatment chamber. It may be provided only in the slit. In this case, it is possible to effectively prevent a temperature drop near the slit on the side where the strand enters the heat treatment chamber.
- the temperature of the heated air blown out from the nozzle is preferably from 150 to 300 ° C.
- the blowing pressure is desirably 10 to 500 Pa higher than the internal pressure of the heat treatment chamber 20.
- a nozzle for supplying hot air into the heat treatment chamber is provided in the slit through which the polyacrylonitrile fiber strand enters and exits the oxidation furnace, so that the hot air can be effectively prevented from leaking from the slit to the outside.
- hot air can be supplied from the nozzle, and a decrease in the wind speed of the hot air from the upper pass to the lower pass can be suppressed.
- the oxidation heat treatment apparatus shown in FIG. 4 was manufactured.
- the dimensions of the heat treatment chamber were 15 m in length, 2 m in width, 1.2 m in height, 0.5 m in the upper passage, and 0.3 m in the lower passage.
- Two folding rollers were installed in each of the flameproofing furnaces.
- a sirocco fan was provided above and below the hot air circulation path.
- the gap between each zone and between the zone and the inner wall was 1 cm.
- An electric heater was attached to the side wall.
- Polyacrylonitrile fiber strands (ldex, 24000 strands) were supplied to the above apparatus.
- the strand feed speed was 300 m_hr, and hot air of 1. lmZsec and 260 ° C was supplied to the uppermost pass.
- the temperature difference between the side wall temperature and the average temperature in the heat treatment room was controlled within 5 ° C.
- the middle part ⁇ The hot air velocity passing through the top 20-pass was maintained at 70% of the hot air velocity passing through the uppermost pass.
- the oxidation heat treatment apparatus shown in FIG. 5 was manufactured.
- the dimensions of the heat treatment chamber were 15 m in length, 2 m in width, 1.2 m in height, 0.5 m in the upper passage, and 0.3 m in the lower passage.
- Two folding rollers were installed in each of the oxidation furnaces.
- a sirocco fan was provided above and below the hot air circulation path.
- a drift prevention plate with a width of 15 cm was placed between each zone and between the zone and the inner wall. This reduced the gap to 1 cm.
- Polyacrylonitrile fiber strands (ldtex, 24000 strands / strand) were supplied to the above apparatus.
- the strand feed rate was 300 mZhr.
- Hot air of 1.lmsec, 260 ° C was supplied to the uppermost pass.
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Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/276,331 US7335018B2 (en) | 2001-03-26 | 2002-03-20 | Flame resistant rendering heat treating device, and operation method for the device |
| CA002409620A CA2409620C (en) | 2001-03-26 | 2002-03-20 | Heat treatment apparatus for oxidation and operating method of the apparatus |
| DE60228261T DE60228261D1 (de) | 2001-03-26 | 2002-03-20 | Wärmebehandlungsanlage und Betriebsverfahren dafür |
| MXPA02011674A MXPA02011674A (es) | 2001-03-26 | 2002-03-20 | Aparato de tratamiento termico para oxidacion y metodo de operacion del aparato. |
| EP02713180A EP1413654B1 (en) | 2001-03-26 | 2002-03-20 | Heat treatment device and operating method for the device |
| JP2002575368A JP3868907B2 (ja) | 2001-03-26 | 2002-03-20 | 耐炎化熱処理装置、及び同装置の運転方法 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001-86618 | 2001-03-26 | ||
| JP2001086618 | 2001-03-26 | ||
| JP2001-296227 | 2001-09-27 | ||
| JP2001296227 | 2001-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002077337A1 true WO2002077337A1 (en) | 2002-10-03 |
Family
ID=26612001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2002/002720 Ceased WO2002077337A1 (en) | 2001-03-26 | 2002-03-20 | Flame resistant rendering heat treating device, and operation method for the device |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7335018B2 (ja) |
| EP (1) | EP1413654B1 (ja) |
| JP (1) | JP3868907B2 (ja) |
| KR (1) | KR20030004424A (ja) |
| CN (1) | CN1208509C (ja) |
| CA (1) | CA2409620C (ja) |
| DE (1) | DE60228261D1 (ja) |
| MX (1) | MXPA02011674A (ja) |
| TW (1) | TW522182B (ja) |
| WO (1) | WO2002077337A1 (ja) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006291438A (ja) * | 2005-03-15 | 2006-10-26 | Toray Ind Inc | 炭素繊維束およびその製造方法 |
| JP2007247130A (ja) * | 2006-02-17 | 2007-09-27 | Toray Ind Inc | 熱処理炉および炭素繊維の製造方法 |
| JP2008156790A (ja) * | 2006-12-25 | 2008-07-10 | Mitsubishi Rayon Co Ltd | 熱処理装置および熱処理方法 |
| WO2013118826A1 (ja) | 2012-02-07 | 2013-08-15 | 三菱レイヨン株式会社 | 横型熱処理装置 |
| CN109405501A (zh) * | 2018-11-19 | 2019-03-01 | 郑州容大科技股份有限公司 | 一种连续式碳素纤维远红外干燥机 |
| JPWO2020189029A1 (ja) * | 2019-03-19 | 2020-09-24 |
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| US7809145B2 (en) | 2006-05-04 | 2010-10-05 | Sony Computer Entertainment Inc. | Ultra small microphone array |
| US8007276B2 (en) * | 2008-04-07 | 2011-08-30 | Despatch Industries Limited | Fiber treatment oven with adjustable gates |
| CN102782418B (zh) * | 2010-01-29 | 2015-02-11 | 利兹勒有限公司 | 氧化炉的端面密封部件 |
| DE102010007481B4 (de) * | 2010-02-09 | 2012-07-12 | Eisenmann Ag | Oxidationsofen |
| DE102010044296B3 (de) * | 2010-09-03 | 2012-01-05 | Eisenmann Ag | Oxidationsofen |
| US9217212B2 (en) * | 2011-01-21 | 2015-12-22 | Despatch Industries Limited Partnership | Oven with gas circulation system and method |
| DE102011010298B3 (de) * | 2011-02-03 | 2012-06-14 | Eisenmann Ag | Oxidationsofen |
| KR101604932B1 (ko) * | 2011-07-28 | 2016-03-18 | 미쯔비시 레이온 가부시끼가이샤 | 내염화 열처리로 |
| JP5873358B2 (ja) * | 2012-03-09 | 2016-03-01 | 東邦テナックス株式会社 | 耐炎化繊維ストランド、その製造方法、及び炭素繊維ストランドの製造方法 |
| TWI527946B (zh) * | 2012-04-12 | 2016-04-01 | 三菱麗陽股份有限公司 | 碳纖維前驅體丙烯酸纖維束及其製造方法、熱氧化處理爐以及碳纖維束的製造方法 |
| CN103538184A (zh) * | 2012-07-16 | 2014-01-29 | 苏州维艾普新材料有限公司 | 一种多层循环固化炉装置 |
| JP6119168B2 (ja) * | 2012-10-03 | 2017-04-26 | 三菱ケミカル株式会社 | 耐炎化繊維束の製造方法、及び、炭素繊維束の製造方法 |
| JP5716872B1 (ja) * | 2013-07-02 | 2015-05-13 | 三菱レイヨン株式会社 | 横型熱処理装置及びこの横型熱処理装置を用いた炭素繊維の製造方法 |
| 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 |
| EP4123065A4 (en) * | 2020-03-18 | 2025-03-12 | Toray Industries, Inc. | Flame-resistant fiber bundles, method for producing carbon fiber bundles, and flame-resistant furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545762A (en) * | 1982-10-28 | 1985-10-08 | Toray Industries, Inc. | Apparatus for producing oxidized filaments |
| US4559010A (en) * | 1984-05-01 | 1985-12-17 | Toray Industries, Inc. | Apparatus for producing oxidized filaments |
| JPS62228867A (ja) * | 1986-03-31 | 1987-10-07 | 三菱レイヨン株式会社 | 炭素繊維製造用の横型熱処理炉 |
| JPH10237723A (ja) * | 1996-12-16 | 1998-09-08 | Toray Ind Inc | 熱処理炉、および炭素繊維の製造方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1041182B1 (en) * | 1996-12-16 | 2003-03-26 | Toray Industries, Inc. | A yarn guide roller |
| US6027337A (en) * | 1998-05-29 | 2000-02-22 | C.A. Litzler Co., Inc. | Oxidation oven |
| DE10123241C1 (de) * | 2001-05-12 | 2002-10-02 | Sgl Carbon Ag | Gasabschluss für Reaktoren mittels Gasleitkörpern |
| US6776611B1 (en) * | 2002-07-11 | 2004-08-17 | C. A. Litzler Co., Inc. | Oxidation oven |
-
2002
- 2002-03-20 JP JP2002575368A patent/JP3868907B2/ja not_active Expired - Fee Related
- 2002-03-20 KR KR1020027015981A patent/KR20030004424A/ko not_active Withdrawn
- 2002-03-20 EP EP02713180A patent/EP1413654B1/en not_active Expired - Lifetime
- 2002-03-20 CA CA002409620A patent/CA2409620C/en not_active Expired - Fee Related
- 2002-03-20 US US10/276,331 patent/US7335018B2/en not_active Expired - Lifetime
- 2002-03-20 DE DE60228261T patent/DE60228261D1/de not_active Expired - Lifetime
- 2002-03-20 CN CNB028008766A patent/CN1208509C/zh not_active Expired - Fee Related
- 2002-03-20 WO PCT/JP2002/002720 patent/WO2002077337A1/ja not_active Ceased
- 2002-03-20 MX MXPA02011674A patent/MXPA02011674A/es active IP Right Grant
- 2002-03-26 TW TW091105861A patent/TW522182B/zh not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4545762A (en) * | 1982-10-28 | 1985-10-08 | Toray Industries, Inc. | Apparatus for producing oxidized filaments |
| US4559010A (en) * | 1984-05-01 | 1985-12-17 | Toray Industries, Inc. | Apparatus for producing oxidized filaments |
| JPS62228867A (ja) * | 1986-03-31 | 1987-10-07 | 三菱レイヨン株式会社 | 炭素繊維製造用の横型熱処理炉 |
| JPH10237723A (ja) * | 1996-12-16 | 1998-09-08 | Toray Ind Inc | 熱処理炉、および炭素繊維の製造方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1413654A4 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006291438A (ja) * | 2005-03-15 | 2006-10-26 | Toray Ind Inc | 炭素繊維束およびその製造方法 |
| JP2007247130A (ja) * | 2006-02-17 | 2007-09-27 | Toray Ind Inc | 熱処理炉および炭素繊維の製造方法 |
| JP2008156790A (ja) * | 2006-12-25 | 2008-07-10 | Mitsubishi Rayon Co Ltd | 熱処理装置および熱処理方法 |
| WO2013118826A1 (ja) | 2012-02-07 | 2013-08-15 | 三菱レイヨン株式会社 | 横型熱処理装置 |
| CN104093892A (zh) * | 2012-02-07 | 2014-10-08 | 三菱丽阳株式会社 | 卧式热处理装置 |
| CN104093892B (zh) * | 2012-02-07 | 2016-03-16 | 三菱丽阳株式会社 | 卧式热处理装置 |
| US10132008B2 (en) | 2012-02-07 | 2018-11-20 | Mitsubishi Chemical Corporation | Horizontal heat treatment device |
| CN109405501A (zh) * | 2018-11-19 | 2019-03-01 | 郑州容大科技股份有限公司 | 一种连续式碳素纤维远红外干燥机 |
| JPWO2020189029A1 (ja) * | 2019-03-19 | 2020-09-24 | ||
| WO2020189029A1 (ja) * | 2019-03-19 | 2020-09-24 | 東レ株式会社 | 耐炎化熱処理炉、耐炎化繊維束および炭素繊維束の製造方法 |
| JP7272347B2 (ja) | 2019-03-19 | 2023-05-12 | 東レ株式会社 | 耐炎化熱処理炉、耐炎化繊維束および炭素繊維束の製造方法 |
| US12031244B2 (en) | 2019-03-19 | 2024-07-09 | Toray Industries, Inc. | Oxidation heat treatment oven and method for manufacturing oxidized fiber bundle and carbon fiber bundle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2002077337A1 (ja) | 2004-07-15 |
| CA2409620A1 (en) | 2002-11-21 |
| US7335018B2 (en) | 2008-02-26 |
| CA2409620C (en) | 2009-09-15 |
| EP1413654A4 (en) | 2005-06-08 |
| CN1208509C (zh) | 2005-06-29 |
| US20050115103A1 (en) | 2005-06-02 |
| DE60228261D1 (de) | 2008-09-25 |
| EP1413654A1 (en) | 2004-04-28 |
| KR20030004424A (ko) | 2003-01-14 |
| MXPA02011674A (es) | 2004-05-17 |
| TW522182B (en) | 2003-03-01 |
| EP1413654B1 (en) | 2008-08-13 |
| CN1460137A (zh) | 2003-12-03 |
| JP3868907B2 (ja) | 2007-01-17 |
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