CN106381576A - Continuous carbon fiber carbonization furnace - Google Patents
Continuous carbon fiber carbonization furnace Download PDFInfo
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- CN106381576A CN106381576A CN201610801298.5A CN201610801298A CN106381576A CN 106381576 A CN106381576 A CN 106381576A CN 201610801298 A CN201610801298 A CN 201610801298A CN 106381576 A CN106381576 A CN 106381576A
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- gas
- heater
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- carbon fibre
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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
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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
Abstract
The invention discloses a continuous carbon fiber carbonization furnace. The carbon fiber carbonization furnace comprises a transversely arranged furnace body with a cavity structure, a furnace lid, a feeding opening positioned in the upstream of the furnace body, a discharging opening positioned in the downstream of the furnace body, gas sealing devices respectively arranged at the feeding opening and the discharging opening, cooling devices respectively arranged between the furnace body and the feeding opening and between the furnace body and the discharging opening, and electrode opening arranged on the furnace body and used for arranging electrodes; the electrodes are powered by a direct current power supply, and the periphery of the cavity structure used as a hearth is provided with a plurality of graphite heating units used for forming a heating area in the cavity structure; and the middle portion of the cavity structure is provided with a protection gas inlet, low temperature areas at two ends of the cavity structure are provided with gas outlets, and a micro-positive pressure state in the cavity structure is kept. The continuous carbon fiber carbonization furnace has the advantages of satisfactory provision of an ideal temperature gradient in the carbon fiber carbonization process, stable parameters, simplicity in maintenance, and realization of long-term continuous and stable running effect.
Description
Technical field
The present invention relates to a kind of carbon fibre carbonizing stove of continuous way, belong to chemical production equipment field, be especially suitable for producing
High performance carbon fiber.
Background technology
Carbon fiber has high specific strength, high ratio modulus, high temperature resistant, corrosion-resistant, endurance, creep resistant, conduction, heat transfer and heat
A series of excellent properties such as the coefficient of expansion is little.It both can be as the reinforcing agent bearing load of structural material, but also as function
Materials serve acts on, thus is widely used in the wide spectrums such as Aero-Space, building, physical culture, automobile, medical treatment.At present, almost do not have
There are other any one materials can have so numerous characteristics concurrently.High temperature carbonization furnace is the serialization of high-performance carbon fibre, volume production
The crucial production equipment changed, the guarantee of its properties is also the basis producing high-performance carbon fibre, is to directly affect high-performance
The key point of carbon carbon fiber quality.
Technological requirement for carbon-fiber high-temperature carbide furnace and feature, commonly use high temperature carbonization furnace at present and there is following asking
Topic：
First carbon fiber pre-oxidizing the stage formed ring molecule crosslinked further, cyclisation and polycondensation, make formation cyclisation and
Aromatic structure changes to two-dimentional random graphits structure.Carburizing temperature with high temperature carbonization furnace constantly raises, carbon unit in carbon fiber
Cellulose content is continuously increased.When 1400 DEG C, mass fraction reaches 94%, and when temperature reaches more than 1500 DEG C, carbon content tends to steady
Fixed and intensity is in higher level, what this required to produce the high temperature carbonization furnace of high-performance carbon fibre reaches 1500 using temperature
DEG C, and in high temperature carbonization furnace burner hearth, design temperature must be more than 1600 DEG C, the temperature that generates heat must even need to reach 1700-
1800℃.For the high-temperature process needing during carbon fibre carbonizing, a kind of high temperature carbonization furnace is had to adopt siliconits or silicon molybdenum
Rod is arranged at carbon fiber top as heater and with bottom, carbon fiber is heated, and insulation material is aluminium silicate wool, and furnace shell is
Monolayer carbon steel, maximum operation (service) temperature is less than 1400 DEG C, type of furnace poor thermal insulation property, and power consumption is serious；Body of heater poor air-tightness, the burner hearth longevity
Life is short it is impossible to satisfaction prepares the high temperature demands of more high modulus carbon fiber.
Based on high-performance carbon fibre in broad range of applications such as Aero-Space, building, physical culture, automobile, medical treatment, there are two kinds high
Warm carbide furnace has been respectively adopted graphite-pipe heating and Frequency Induction Heating.Graphite-pipe mode of heating is specially graphite-pipe or by graphite
For the rectangular configuration of cavity in the middle of plate composition, draw electricity in two end fixed installation metal electrodes of heating graphite pipe or transition, two ends
Electrode is electrically heated by low-voltage and high-current, makes the temperature control in heater cavity at 1000 DEG C～1800 DEG C, fiber
Tow is generally multiply synthetic fibre tows, passes through by certain speed in heater high temperature intracavity, tow is i.e. by high temperature cabonization, carbon
It is carbon fiber finished product, the electrode of this kind of structure directly draws electrical contact, the side of electrified regulation with graphite heater or transition after change
Formula, can be described as directly heating mode or resistance heating manner.This structure at present in laboratory applications than wide and low cost
Honest and clean programming rate easy to maintenance is also very fast, but does greatly long and other reasons it is impossible to should due to being limited by single graphite and cannot do
Quantization life for high-performance carbon fibre.
Also have a kind of high temperature carbonization furnace of employing Frequency Induction Heating mode, a square graphite is installed in the middle of burner hearth
Box, corner rounding angle, it is inserted in the middle of induction coil after outside cladding insulation material.Control the alternating source of power supply output by intermediate frequency
It is passed through induction coil, sensing graphite causes graphite to generate heat to 900- in graphite surface formation vortex after induction coil
1800 DEG C, graphite easily can be heated to more than 1600 DEG C of high temperature by this kind of mode, but due to its spiral electromagnetic field
Effect, and cause the too high medium temperature of graphite four round angle temperature low and make non-uniform temperature, making large-scale yield production type
During high temperature carbonization furnace and because insulation material is generally material with carbon element and consumption is more, also can be sensed during electromagnetic induction
Heating causes loss to greatly increase, and the faradism magnet-wire that induction coil is formed also can partly sense for adjacent graphite,
Thermograde cannot be formed well.
Content of the invention
The present invention is intended to provide a kind of carbon fibre carbonizing stove of continuous way, it is high that this carbide furnace can solve high-performance carbon fibre
In warm carbonisation cannot the problem that processes of peak efficiency high temperature it is ensured that in-furnace temperature uniformly, can be good at providing
Form ideal temperature gradient during carbon fibre carbonizing.Purpose further is that the type of furnace of this carbide furnace is reasonable in design, safeguards
Conveniently it is ensured that furnace pressure balance, in stove, oxygen content is low.
To achieve these goals, the technical solution adopted in the present invention is：
A kind of carbon fibre carbonizing stove of continuous way, it is structurally characterized in that, including the body of heater with cavity structure lateral arrangement, stove
Lid, the charging aperture positioned at body of heater upstream and the discharging opening being located at body of heater downstream, are respectively provided with the gas of charging aperture and discharge outlet
Sealing device, is separately positioned on the chiller and body of heater and discharging opening between body of heater and charging aperture, and is arranged on stove
The electrode ports for installing electrode on body；Described electrode is powered by DC source, as the described cavity structure periphery of burner hearth
It is provided with the multiple graphite heaters for forming heating region in cavity structure；In the middle part of described cavity structure, there is shielding gas
Body air inlet, the two ends low-temperature space of this cavity structure has air vent, keeps slight positive pressure state in described cavity structure.
Thus, uniformly, DC source passes through electrode sensing heating graphite heater to the carbonization in-furnace temperature of the present invention, can
Form ideal temperature gradient during carbon fibre carbonizing is provided well, and parameter stability, easy maintenance, can reach and connect for a long time
The effect of continuous stable operation.
According to embodiments of the invention, the present invention can also be made with further optimization, below for the skill of formation after optimizing
Art scheme：
Preferably, it is provided with insulation construction in described body of heater；Preferably insulation construction is the hard felt of the graphite being arranged in around body of heater, insulation
Hard felt and heat-preservation cotton.
Preferably, described cavity structure is graphite cavity, and this graphite cavity is assembled by multilamellar polylith graphite block, and phase
The connector of adjacent two pieces of graphite blocks adopts T-slot to coordinate, and fills graphite glue at connector gap.
Preferably, described cavity structure is bypass structure；The height of preferably described cavity structure is 150mm-250mm, wide
Degree 100mm-150mm wider than carbon fiber arrangement width.
Preferably, described gas-tight sealing has multichannel protective gas inlet port and has multiple horizontal strip air channels
Gas distribution chamber, and the rightabout gap of wind passage mouth being arranged on strip air channel；Each road protective gas all enters gas
After the distribution of body distribution cavity, formation protection gas curtain is blown into by this gap；The top of preferably described gas-tight sealing is interlocked with bottom
Setting multiple tracks protection gas curtain, to form mazy gas-tight sealing.Thus, labyrinth type gas-tight sealing apparatus can allow fibre
Dimension normal through can stop the entrance of external air well, prevent oxygen molecule that external air carries secretly and hydrone from entering again
Enter in stove.
Preferably, described electrode sequentially passes through plastics chopper by three phase mains, fastp-acting fuse, three-phase regulator are carried out
Input after phase shift pressure regulation to transformator, the signal that transformator change is pressed into low-voltage and high-current inputs to described graphite through electrode again
Heater.Thus, the power supply of the present invention adopts phase shift pressure regulation, and its seriality is good, and impact is little, then exports to transformator output
It is rectified into direct current through full-controlled rectifier bridge, then add to graphite heater.
Preferably, described slight positive pressure state be finger pressure be 20Pa-100Pa.
Preferably, present invention additionally comprises gas purge system；Preferably described gas purge system is included through in furnace shell
Many air inlet pipe of portion's corner location, if run through middle air inlet and the bottom air inlet of furnace shell；One end of described air inlet pipe is drawn
Go out and outside furnace shell, access protective gas, the other end blocks, and air inlet pipe is uniformly placed with aperture.
Preferably, it is provided with drafting machine outside described charging aperture and discharging opening；Preferably described drafting machine is to carbon fibre tow
Draft speed is 0.3-3.0m/s, and degree of draft is 0-6%.
Preferably, described gas-tight sealing is provided with air seal mouth adjusting means, adjusts dress in air seal mouth
Put setting height(from bottom) and indicate chi and for adjusting the upper adjustable plate of seal open height and lower adjustable plate.Thus, it is desirable to observe
Manually height can be heightened in stove or during early stage pre-buried high temperature traction fiber, during normal work can manually by seal height reduction,
To reduce as far as possible, the heat in stove is escaped outward and external air enters, and works in slight positive pressure state all the time in guarantee body of heater, subtracts
The usage amount of few protective gas, and cavity sealing regulating may have part and the face of contact by tow, all using lead angle or
Hemisphere format polishes smooth after making again it is ensured that air seal adjusting means and tow will not produce hanging wire phenomenon.
Preferably, described chiller is water-cooling apparatus, and the inner chamber of this water-cooling apparatus is less than out for import sectional area
The tapering trumpet-like passage of mouth sectional area；Preferably described water-cooling apparatus includes water-cooling jacket, and water-cooling jacket bottom is set to water inlet,
It is set to outlet at water-cooling jacket.
Preferably, equipped with heat pipe and water-cooling jacket structure on described bell, middle sinew adding strip, described heat pipe be respectively connected to into
The mouth of a river and outlet form water circulation channel.
Preferably, described graphite heater is arranged on the upper and lower both sides of cavity structure, and every group of graphite heater is provided with input
Electrode and output electrode, totally 4 electrodes up and down, 4 electrodes interlock and access unidirectional currents so that forming isopotential point in body of heater.
Compared with prior art, the invention has the beneficial effects as follows：
1st, the present invention is applied to high-performance carbon fibre material or other fibrous material carries out mass production between 500-1600 DEG C
High temperature cabonization heat treatment is used, and its major part is building block design, is easy to spell assembly and disassembly.High temperature furnace design takes into full account reason
The preparation of volume production high-temperature process of solution high-performance carbon fibre and technological requirement, meet its emphasis and particular/special requirement as far as possible.
2nd, required according to technological requirement and mass production preparation, invented upper and lower equally distributed high power graphite heater,
Power supply adopts phase shift pressure regulation, and its seriality is good, and impact is little, then exports and be rectified into directly through full-controlled rectifier bridge to transformator output
Stream, then add to graphite heater.
3rd, the insulation construction that the uniform hard felt of graphite and low heat conductivity heat-preservation cotton are constituted around, match there is any discrepancy simultaneously
Gas sealing device, gateway water-cooling apparatus, be provided with gateway temp buffer, high-precision temperature control curve and
Comprehensively temperature monitoring system, in each point protective gas oxygen content and dew point tracking system and stove in fine stove, each point gas is micro-
Pressure test system.Electrode around convenient body of heater splits out system, heating isoelectric level principle and heat pipe radiating system.
4th, the high temperature carbonization furnace of the present invention in actual use, produce high-performance carbon fibre actually used during each
Item parameter all reaches advanced level, and its temperature is uniform, simple to operate, parameter stability, and easy maintenance can reach continuously steady for a long time
Fixed operation.
Brief description
Fig. 1 is the structure principle chart of one embodiment of the invention；
Fig. 2 is present configuration schematic diagram sectional view；
Fig. 3 is present configuration schematic diagram side view；
Fig. 4 is air seal schematic diagram of the present invention；
Fig. 5 is seal adjusting means schematic diagram of the present invention；
Fig. 6 is Forced water cooling schematic diagram of the present invention；
Fig. 7 is power supply schematic diagram of the present invention；
Fig. 8 is furnace shell of the present invention and cooling schematic diagram；
Fig. 9 is bell of the present invention and cooling schematic diagram；
Figure 10 discharges schematic diagram for heater of the present invention；
Figure 11 is graphite chamber of the present invention schematic diagram；
Figure 12 is incubated schematic diagram for the present invention；
Figure 13 is gas flow schematic diagram of the present invention；
Figure 14 is the side view of Figure 13；
Figure 15 is fiber operation schematic diagram of the present invention.
Specific embodiment
Below with reference to figure and to describe the present invention in detail in conjunction with the embodiments.It should be noted that in situation about not conflicting
Under, the embodiment in the present invention and the feature in embodiment can be mutually combined.For sake of convenience, hereinafter such as occur " on ",
D score, "left", "right" printed words, only represent consistent with the upper and lower, left and right direction of figure itself, do not play restriction effect to structure.
A kind of high-performance yield production type continuous high temperature carbide furnace, as Figure 1-3, the stove foot 14 of carbide furnace by Q235A material,
The bottom of furnace body support feet that the square tubes soldering of thick 8-10mm becomes, the part such as body of heater 9, bell 39, electrode ports 5,6 and Inlet and outlet water
All using 304 stainless be welded, surface all takes thermostable rustproof to process, and stove inner bottom part supporting steel plate 12 adopts S310
High temperature resistant stainless steel is laid.Electrode ports 5,6 are built with electrode 4.As shown in figure 3, top graphite heater 15 and bottom graphite are sent out
Hot body 16 is arranged on outside graphite chamber 17.
For realizing high temperature continuous processing in continuous running for the carbon fiber 56, complete equipment is from entrance to outlet
Bypass structure, through-void width and height according to required carbon fiber to be processed arrange the number of plies and carbon fiber arrangement width and
Fixed, general height is 150-250mm, and width ratio carbon fiber arrangement width increases 100-150mm, with carbon fiber in tension system control
The operation of width not expanding is not received under system.Heating space is spliced into an integral cavity structure 11 by high purity graphite, and imports and exports by protecting
What warm felt was spliced into enter, and that plug for outlet realizes is seamless spliced, the gas sealing device 1,8 that simultaneously matches that there is any discrepancy, and come in and go out saliva
Chiller 2,7, is spliced into an integral cavity structure 11 in equally distributed high power graphite heater up and down by high purity graphite
10.As shown in fig. 7, being moved through three-phase regulator 58 again through plastics chopper 57 and fastp-acting fuse 58 by three phase mains
Phase formula pressure regulation, is input to transformator 60, and the signal that change is pressed into low-voltage and high-current inputs to above-mentioned graphite through graphite electrode again
Heater 10.
As shown in figure 12, the uniform hard felt of graphite 47, the hard felt of low-temperature insulation 48 and low heat conductivity heat-preservation cotton 49 around body of heater
The insulation construction constituting, simultaneously match that there is any discrepancy gas sealing device 1,8, gateway water-cooling apparatus 2,7, it is provided with
Gateway temp buffer, high-precision temperature control curve and comprehensive temperature monitoring system, each point protection in fine stove
Each point gas minute-pressure test system in gas oxygen content and dew point tracking system and stove.The high temperature carbonization furnace of the present invention makes actual
With in, produce high-performance carbon fibre actually used during parameters all reach advanced level, its temperature uniformly, operation
Simply, parameter stability, only needs once a year, regularly after simple-to-maintain, to reach and continuously run for a long time.
As shown in figure 4, enter silk and filament mouth outermost end in body of heater respectively design one section of gas-tight sealing 1,8, integrally adopt
Formed with stainless steel welded, two ends are welded using with square flange 18, integral outer is filled using bright thin slice rustless steel 20
Plaque, bottom arranges multichannel protective gas inlet port 19, and each road protective gas is formed laterally after all entering gas distribution chamber 21
Strip air channel, under the pressure effect of protective gas so that pressure in gas distribution chamber for the protective gas uniformly, then from wind
The rightabout at road junction arranges a superfine gap 22, makes gas be blown into air seal chamber by this gap under pressure
Form high-purity protection gas curtain.This gas curtain is all crisscross arranged 6-7 road gas curtain in the top of gas-tight sealing and bottom, to form fan
Palace formula gas-tight sealing, can allow fiber normal through can stop the entrance of external air well, prevent external again
The oxygen molecule that air is carried secretly and hydrone enter in stove.
As shown in figure 5, arranging air seal mouth adjusting means 23 on entering the gas-tight sealing that silk mouth is with filament mouth,
Its device stainless height installed above indicates chi 25, can adjust upper adjustable plate 26 and lower adjustable plate with manual adjustment means 24
27 realizing seal open height, needs to observe in stove or can highly be heightened manually during early stage pre-buried high temperature traction fiber,
Can reduce high for seal manually during normal work, to reduce as far as possible, the heat in stove is escaped outward and external air enters,
Ensure that body of heater works in slight positive pressure state all the time, reduce the usage amount of protective gas, and cavity sealing regulating may silk
Bundle has part and the face of contact, polishes smooth it is ensured that air seal adjusting means after all being made using lead angle or hemisphere format again
Hanging wire phenomenon will not be produced with tow.
As shown in figure 1, arranging one section of forced water cooler 2 of each setting between gas-tight sealing 1,8 and body of heater 9,
7, forced water cooler 2,7 are welded by S310 high temperature resistant stainless steel, and its throat width is in the carbon fiber of required carbonization
On width, both sides respectively increase 30-50mm, and its entrance height respectively increases on the basis of the carbon fiber height of required carbonization up and down
20-40mm, its exit width is respectively further added by 50-100mm in both sides on the basis of its throat width, and its outlet height is in its entrance
Respectively it is further added by 20-50mm on the basis of height up and down, entrance is internally formed as rectangle in forced water cooler with this, goes out
Mouth is foursquare greatly loudspeaker contraction mouth, and this kind of form can play reflection to furnace heat, and the heat in minimizing stove is outward
Escape and external air enters, work in all the time under slight positive pressure state in guarantee body of heater, reduce the usage amount of protective gas.
As shown in fig. 6, the containment portion in forced water cooler makes a water-cooling jacket 30, the installation shape of water-cooling jacket
Conventional jacket can be adopted, the form soldering stainless steel plate 29 surrounding in the containment portion surrounding of forced water cooler is formed
Chuck cavity it is also possible in the way of horizontal direction square between certain of the containment portion of forced water cooler soldering stainless steel
Water pipe 30, realizes the purpose of Forced water cooling.It is set to water inlet 31 at the minimum point of chuck bottom, arrange at the peak of chuck top
For outlet 32, described intake-outlet is not limited to 1 and enters 1 go out, can be for entering to have more more, and preferably 3 enter 4 goes out.
It is furnace shell 3 on stove foot 14 top of integral solder, furnace shell is rectangle structure, and 304 rustless steels are adopted large-scale folding
Sheet metal bending is become and is welded after C-shaped configuration by bender, furnace shell all around and bottom is enclosed construction, top adopts large-scale flat
Face flange welding, surface all takes thermostable rustproof to process.
High temperature carbonization furnace furnace shell inner bottom part is close to bottom welding by many rustless steel heat pipes 13 of certain rule setting, and
Each heat pipe arrangement ensures that its gas internally can form circulation in formed space, smooth laying S310 above heat pipe
High temperature resistant stainless steel plate 12, that is, guarantee to take away the heat that steel plate top is transmitted in time, is also enough to ensure that and is produced
The oxygen being detained when waste gas and shove charge discharges out of the furnace in time.
As shown in figure 8, the reinforcement 33,34 being made up of rustless steel square tube, square tube are all welded in the outside all of corner of furnace shell
Terminal device water pipe head 37,38, the bigger rustless steel square tube 35 of lower edge welded corner joint, the water pipe head of all square tubes is according to stove
Body interior temperature distribution and thermal loss relation connect according to Different Rule connected mode to the big stainless steel tube 35 of bottom, under
The big rustless steel square tube 35 in portion accesses the import and export 37,38 of total cooling after collecting.Ensure that the stress deformation of furnace shell is little, intensity
Greatly, dispersed heat in stove can also be taken away in time.
Housing in-plane all around be spaced 200-300mm apart from soldering stainless steel heat pipe 36, its guarantor
The stress deformation having demonstrate,proved furnace shell is little, and intensity is big, also can take away dispersed heat in stove in time, makes that furnace shell has high intensity and height is led
Hot and excellent isothermal performance.
Case top adopts big face-flange 9 and case weld 3, and large-scale face-flange is according to the convenience installed and safeguard
Add rectangular tube in lateral attitude, form porous flange, rectangular tube water flowing is all welded in the bottom of flange.Flange top is according to opening
Groove is to put into sealing ring.In the presence of the rectangular tube water-cooled of sealing ring, sealing coil temperature rise is little, and deformation is less, ensure that under high temperature
Sealing property will not lose efficacy.As shown in figure 9, bell adopts heat pipe and water-cooling jacket form, middle plus stainless reinforcing rod 41, accesses
Water inlet 40 and outlet 42 form water circulation channel and are cooled down.
Carbide furnace insulation material all from fibrous material, its extremely low heat conductivity and unit weight, reduces the weight of equipment
Amount and energy consumption, both ensure that furnace heat outwards ran off, and reduced equipment surface temperature, and the harmful gass that turn avoid in stove are waved
Send out, simultaneously no any harmful gass volatilization, internal layer adopts the hard felt 47 of graphitization processing for high-temperature flame-proof layer, and intermediate layer is middle temperature
Heat-insulation layer 48, using commonly hard felt, outer layer is low-temperature insulation layer 49, using high aluminium profiles aluminium silicate warming plate.All insulation materials
It is sheet material and form overlap joint mouth.Modular assembled in stove after all repairing before shove charge, institute's seam is all interlocked splicing.
Avoid the loss of heat, also ensure that the global consistency of heating chamber in body of heater.
In the range of the thermal treatment zone of burner hearth, center is provided with a graphite chamber as cavity structure 11 being through to whole burner hearth,
Graphite chamber is arranged on inside heater, and as shown in figure 11, for convenience of the maintenance installed with the later stage, graphite chamber is spelled by multilamellar polylith
Dress, connector is coordinated using T-slot 63, with pyrographite glue blind during assembling, heats up and makes graphite adhesive curing, make graphite
Chamber composes a complete entirety, and graphite has good heat-conductive characteristic, and graphite is also substantially close to theoretical black matrix simultaneously
Material, can effectively absorb the infrared emanation under high temperature, make whole burner hearth high-temperature region cross section form very little temperature difference, also reduce
Work gas consumption during carbonization.
As shown in Figure 10, described heater adopts heating graphite rod 44,45, and the heater 10 of each thermal treatment zone is in stone
The two-layer up and down in black chamber, is passed through the unidirectional current of low-voltage and high-current by electrode 46, and every group of heater arranges two electricity of input and output
Pole, totally 4 electrodes up and down, 4 electrodes interlock and access unidirectional currents so that forming isopotential point 43 in stove.Avoid in temperature-rise period
Spark phenomenon, and between each temperature area heating body no direct potential connect, according to carbon fiber carbon metallization processes, burner hearth is divided into 10-12
Individual warm area, a wherein 7-9 controlled warm area, remaining is transition temperature, and highest temperature area is located at 5-7 warm area.
Described temp measuring system comes the multi-temperature zone multi-point temp measuring system of thermocouple 62 formation using branched molybdenum tube tungsten, entirely
System constitutes a supervisory system of closed, thus realize temperature real-time closed-loop and controlling and monitor.
As Figure 13, shown in 14, corner location within through furnace shell for the gas purge system arranges many stainless steel tubes
Air inlet pipe 50, one end is drawn the outside mounting ball valve of furnace shell and is accessed protective gas, and welds with furnace shell, and the rustless steel other end adopts steel
Plate blocks welding, and on stainless steel tube, longitudinal direction bores aperture 50 at interval of 30-50mm and uniformly arranges.In furnace shell internal corner peace
Dress, and multiple air vents and ball valve are installed on furnace shell wall.In body of heater baker and during normal work, corner is entered gas tube 50 and is entered
Gas, 2 air inlets 52 in the middle of tunnels and bottom air inlet 51 according to different gas flows, different air vent aperture, being capable of maximum journey
That spends goes out replacement of oxygen in stove into plug for outlet 54,55.
Temperature control as shown in figure 15 and the structure principle chart of monitoring system, wherein temperature control and monitoring system comprise
By forming multi-region main temperature control system 65 and other multipoint temperature monitoring system：As the temperature monitoring of gas-tight sealing 1,8,
The temperature monitoring of water-cooled end fiber 63, the monitoring temperature of coke discharging mouth 64.
Before and after body of heater, both sides open up multiple electrodes mouth all in accordance with different warm area quantity, and three layers of heat-insulation layer is also outputed identical
Insulation with the level block up, when changing heater, only need to open electrode ports and insulation is blocked up i.e. replaceable heater.Described every
One electrode ports is respectively provided with entering and gas outlet of protective gas, prevents electrode ports from forming oxygen containing dead angle.
In described temperature control system, temperature control instrument, from the conductive special FP93 temperature controller of Japan, has P, I, D parameter certainly
Adjust and manually revision function, there is overtemperature, deficient temperature, break the power alarm defencive function such as even simultaneously, overtemperature alarm once generation,
System can cut off electrical source of power immediately, with product burning when preventing temperature control system to lose efficacy；Executive component is with advanced SCR phase shift skill
Art replaces traditional A.C. contactor to control, and realizes soft contact control, accurate, reliability, long service life；SCR phase-shift voltage regulating is defeated
It is changed into low-voltage, high-current DC voltage through transformator 60 pressure regulation and after three-phase bridge rectifier 61 rectification after entering, heat up smooth
Stable, improve the over control causing because of P, I, D, improve the control stability of temperature.Each warm area is respectively provided with master control temperature,
Heater thermometric, graphite chamber thermometric, the internal thermometric of insulation material, the outer thermometric of adiabator layer, enter filament mouth thermometric, and all
In water route circling water flow rate, stove, each point gas pressure, Deng Gong 96 tunnel are patrolled and examined.
Described burner hearth is internal and graphite chamber is micro- curved arch, and in graphite chamber, middle setting has protective gas air inlet, in stove
Graphite chamber two ends low-temperature space is provided with taper air vent.Burner hearth indoor design is micro- curved arch it can be avoided that carbon fiber distraction procedure
In sagging hanging wire phenomenon, air inlet and side two end toper air vent ensure that carbide furnace running is micro- in the middle of graphite chamber
Malleation, typically in 20-100Pa, and smooth in exhaust avoids tar to drip on carbon fiber.
The present invention is high temperature cabonization（Non-graphitized, graphitization is in high temperature cabonization follow-up process）, precursor through pre-oxidation at
It is converted into the oxidization fiber of heat-resisting trapezium structure after reason, be converted into the carbon fiber with Turbostratic, transformation mechanism through low-temperature carbonization
It is under the Temperature Treatment of 1300-1600 degree, less trapezium structure carries out crosslinking, polycondensation further, and same with pyrolysis
When and discharge many small molecule by-products.Simultaneously intermolecular be dehydrated, its other impurity of dehydrogenation, discharge the gases such as H, N,
Non-carbon element is constantly discharged, makes the carbon content relative increase in carbon fiber, ultimately generate carbon more than 93% for the phosphorus content fine
Dimension.
For realizing continuous production technology, usual charging aperture 66 is connected with aforementioned pre-oxidation treatment, i.e. pre-oxidation completes it
Afterwards, fibre bundle is directly entered the charging aperture 66 of carbide furnace.Simultaneously in order to optimize the traction control of carbon fiber temperature-rise period, in height
At the charging aperture 66 of warm carbide furnace, discharging opening 67,15 roller or multi-roll drafting machine are respectively set, many carbon fibre tows are wound around
On drafting machine, drafting machine is according to the Temperature Feedback of carbonization furnace interior and the tension detecting instrument feedback being in carbon fiber top
Tension signal adjusts the speed of service of before and after's drafting machine according to different and Product Process by converter, to realize in high temperature cabonization
During negative traction, drafting force simultaneously makes carbon fiber enter from carbide furnace import, continuously arrives out after high temperature cabonization
Connect to subsequent process equipment after mouthful（Speed controlling controls in 0-6% in 0.3-3.0m/s, degree of draft）.
As described above, during carbon fiber continuous carbonization, high temperature carbonization furnace need to arrange overall whole to outlet from entrance
The passage running through supplies carbon fiber to walk, and for preventing in-furnace temperature to be radiated to outside, imports and exports two in carbide furnace and is provided with water
Cold cavity devices, when it also avoid too high temperature radiation to external carbon simultaneously, the too high oxidation causing of carbon fiber temperature
Phenomenon.
As described above, air curtain device must be formed in entering to come out of the stove by high pure protective gas for preventing extraneous air from entering in stove
Carbon fiber carry out gas-insulated, and make furnace inner gas pressure formed pressure-fired, so that gas can only be discharged from inside to outside from stove.
The content that above-described embodiment illustrates should be understood to that these embodiments are only used for being illustrated more clearly that the present invention, and not
For limiting the scope of the present invention, after having read the present invention, the various equivalent form of values to the present invention for the those skilled in the art
Modification each fall within the application claims limited range.
Claims (13)
1. a kind of carbon fibre carbonizing stove of continuous way is it is characterised in that include thering is cavity structure（11）The body of heater of lateral arrangement
（9）, bell（39）, positioned at body of heater（9）The charging aperture of upstream（66）With positioned at body of heater（9）The discharging opening in downstream（67）, set respectively
Put charging aperture（66）And discharging opening（67）The gas-tight sealing at place（1,8）, it is separately positioned on body of heater（9）With charging aperture（66）It
Between and body of heater（9）With discharging opening（67）Between chiller, and be arranged on body of heater（9）On for installing electrode（4）'s
Electrode ports（5,6）；Described electrode（4）Powered by DC source, as the described cavity structure of burner hearth（11）Periphery is provided with use
In in cavity structure（11）The interior multiple graphite heaters forming heating region（10）；Described cavity structure（11）Middle part has guarantor
Shield gas inlet, this cavity structure（11）Two ends low-temperature space there is air vent, described cavity structure（11）Interior holding is micro- just
Pressure condition.
2. the carbon fibre carbonizing stove of continuous way according to claim 1 is it is characterised in that described body of heater（9）Inside it is provided with guarantor
Warm structure；Preferably insulation construction is the hard felt of the graphite being arranged in around body of heater（47）, thermal-insulation hard felt（48）And heat-preservation cotton（49）.
3. the carbon fibre carbonizing stove of continuous way according to claim 1 is it is characterised in that described cavity structure（11）For stone
Black cavity, this graphite cavity is assembled by multilamellar polylith graphite block, and the connector of adjacent two pieces of graphite blocks is joined using T-slot
Close, and at connector gap, fill graphite glue.
4. the carbon fibre carbonizing stove of continuous way according to claim 1 is it is characterised in that described cavity structure（11）For straight
Logical structure；Preferably described cavity structure（11）Height be 150mm-250mm, width ratio carbon fiber arrange width width 100mm-
150mm.
5. the carbon fibre carbonizing stove of continuous way according to claim 1 is it is characterised in that described gas-tight sealing（1,
8）There is multichannel protective gas inlet port（19）With the gas distribution chamber with multiple horizontal strip air channels（21）, and setting
The rightabout gap of wind passage mouth in strip air channel（22）；Each road protective gas all enters gas distribution chamber（21）After distribution
By this gap（22）It is blown into formation protection gas curtain；Preferably described gas-tight sealing（1,8）Top be crisscross arranged with bottom
Multiple tracks protects gas curtain, to form mazy gas-tight sealing.
6. the carbon fibre carbonizing stove of continuous way according to claim 1 is it is characterised in that described electrode（4）By three-phase electricity
Source sequentially passes through plastics chopper（57）, fastp-acting fuse（58）, three-phase regulator（58）Input after carrying out phase shift pressure regulation to
Transformator（60）, transformator（60）Become the signal being pressed into low-voltage and high-current again through electrode（4）Input to described graphite heater
（10）.
7. the carbon fibre carbonizing stove of the continuous way according to one of claim 1-6 is it is characterised in that described slight positive pressure state
Be finger pressure be 20Pa-100Pa.
8. the carbon fibre carbonizing stove of the continuous way according to one of claim 1-6 is it is characterised in that also include gas purging
System；Preferably described gas purge system is included through furnace shell（3）Many air inlet pipe of internal corner location（50）If running through
The middle air inlet of furnace shell（52）And bottom air inlet（51）；Described air inlet pipe（50）One end draw furnace shell（3）Outside access
Protective gas, the other end blocks, and air inlet pipe（50）Uniformly it is placed with aperture.
9. the carbon fibre carbonizing stove of the continuous way according to one of claim 1-6 is it is characterised in that described charging aperture（66）
And discharging opening（67）Outside is provided with drafting machine；Preferably described drafting machine is 0.3-3.0m/s to the draft speed of carbon fibre tow,
Degree of draft is 0-6%.
10. the carbon fibre carbonizing stove of the continuous way according to one of claim 1-6 is it is characterised in that described air seal
Device（1,8）On be provided with air seal mouth adjusting means（23）, in air seal mouth adjusting means（23）Upper setting height(from bottom) mark
Show chi（25）With the upper adjustable plate for adjusting seal open height（26）And lower adjustable plate（27）.
The carbon fibre carbonizing stove of 11. continuous ways according to one of claim 1-6 is it is characterised in that described chiller
For water-cooling apparatus（2,7）, this water-cooling apparatus（2,7）Inner chamber be less than the tubaeform logical of discharge area for import sectional area
Road；Preferably described water-cooling apparatus（2,7）Including water-cooling jacket（30）, water-cooling jacket（30）Bottom is set to water inlet（31）,
Water-cooling jacket（30）Place is set to outlet（32）.
The carbon fibre carbonizing stove of 12. continuous ways according to one of claim 1-6 is it is characterised in that described bell（39）
On equipped with heat pipe and water-cooling jacket structure, middle sinew adding strip（41）, described heat pipe is respectively connected to water inlet（40）And outlet
（42）Form water circulation channel.
The carbon fibre carbonizing stove of 13. continuous ways according to one of claim 1-6 is it is characterised in that described heating graphite
Body（10）It is arranged on cavity structure（11）Both sides up and down, every group of graphite heater（10）It is provided with input electrode and output electrode,
Totally 4 electrodes up and down, 4 electrodes interlock and access unidirectional currents so that body of heater（9）Interior formation isopotential point（43）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610801298.5A CN106381576A (en) | 2016-09-05 | 2016-09-05 | Continuous carbon fiber carbonization furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610801298.5A CN106381576A (en) | 2016-09-05 | 2016-09-05 | Continuous carbon fiber carbonization furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106381576A true CN106381576A (en) | 2017-02-08 |
Family
ID=57938910
Family Applications (1)
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|---|---|---|---|
| CN201610801298.5A Pending CN106381576A (en) | 2016-09-05 | 2016-09-05 | Continuous carbon fiber carbonization furnace |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107164842A (en) * | 2017-05-19 | 2017-09-15 | 广州赛奥碳纤维技术有限公司 | A kind of carbon fiber production is combined furnace muffle with long-life low temperature carbonization furnace |
| CN107553939A (en) * | 2017-09-30 | 2018-01-09 | 福清市融城益峰机械有限公司 | The heat-insulated equal heat structure of the Wrapping formed machine wind-curtain type of fiber conduit |
| CN109553097A (en) * | 2019-02-15 | 2019-04-02 | 湖南烯瑞自动化设备有限公司 | A kind of graphite production line and its continous way graphitizing furnace |
| CN110542096A (en) * | 2019-09-17 | 2019-12-06 | 西安华悦能源环保科技有限公司 | garbage low-temperature pyrolysis harmless treatment equipment |
| CN111733485A (en) * | 2020-07-30 | 2020-10-02 | 广州赛奥碳纤维技术股份有限公司 | Atmosphere balance system of carbonization furnace |
| CN112626644A (en) * | 2021-01-21 | 2021-04-09 | 张玉琴 | Carbonization equipment is used in production of high performance carbon fiber |
| CN113564751A (en) * | 2020-04-29 | 2021-10-29 | 天华化工机械及自动化研究设计院有限公司 | Carbonization furnace seal cavity structure |
| CN117328168A (en) * | 2023-09-27 | 2024-01-02 | 陕西美兰德新材料股份有限公司 | Tubular high-temperature ceramic furnace for carbon fiber |
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| CN107164842A (en) * | 2017-05-19 | 2017-09-15 | 广州赛奥碳纤维技术有限公司 | A kind of carbon fiber production is combined furnace muffle with long-life low temperature carbonization furnace |
| CN107553939A (en) * | 2017-09-30 | 2018-01-09 | 福清市融城益峰机械有限公司 | The heat-insulated equal heat structure of the Wrapping formed machine wind-curtain type of fiber conduit |
| CN107553939B (en) * | 2017-09-30 | 2023-07-07 | 福清市融城益峰机械有限公司 | Air curtain type heat insulation soaking structure of fiber pipeline winding forming machine |
| CN109553097A (en) * | 2019-02-15 | 2019-04-02 | 湖南烯瑞自动化设备有限公司 | A kind of graphite production line and its continous way graphitizing furnace |
| CN110542096A (en) * | 2019-09-17 | 2019-12-06 | 西安华悦能源环保科技有限公司 | garbage low-temperature pyrolysis harmless treatment equipment |
| CN113564751A (en) * | 2020-04-29 | 2021-10-29 | 天华化工机械及自动化研究设计院有限公司 | Carbonization furnace seal cavity structure |
| CN111733485A (en) * | 2020-07-30 | 2020-10-02 | 广州赛奥碳纤维技术股份有限公司 | Atmosphere balance system of carbonization furnace |
| CN112626644A (en) * | 2021-01-21 | 2021-04-09 | 张玉琴 | Carbonization equipment is used in production of high performance carbon fiber |
| CN112626644B (en) * | 2021-01-21 | 2022-05-03 | 西安辰马电子科技有限公司 | Carbonization equipment is used in production of high performance carbon fiber |
| CN117328168A (en) * | 2023-09-27 | 2024-01-02 | 陕西美兰德新材料股份有限公司 | Tubular high-temperature ceramic furnace for carbon fiber |
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Application publication date: 20170208 |