CN106637516A - Hot air circulating system of pre-oxidation oven - Google Patents
Hot air circulating system of pre-oxidation oven Download PDFInfo
- Publication number
- CN106637516A CN106637516A CN201611192841.2A CN201611192841A CN106637516A CN 106637516 A CN106637516 A CN 106637516A CN 201611192841 A CN201611192841 A CN 201611192841A CN 106637516 A CN106637516 A CN 106637516A
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- hot air
- heater
- air
- circulating system
- oxidation furnace
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Furnace Details (AREA)
Abstract
The invention provides a hot air circulating system of a pre-oxidation oven. The hot air circulating system comprises an oven body, an air intake channel and an air return channel, wherein the air intake channel and the air return channel are formed in the oven body and communicated in an end-to-end manner; a partition wall is arranged in the oven body; the oven body is divided into at least two independent hot air circulating units in the length direction by the partition wall; a longitudinal partition board is arranged in each hot air circulating unit of the oven body in the length direction of the oven body; two ends of each longitudinal partition board are connected with a corresponding inner wall of the oven body by a corresponding air distribution board; the air intake channel is formed by the space which is jointly surrounded by the longitudinal partition boards, the air distribution boards and the inner walls of the oven body; and the air return channel is formed by the space which is jointly surrounded by the longitudinal partition boards, the air distribution boards, the inner walls of the oven body and the partition walls. According to the scheme of the hot air circulating system disclosed by the invention, the problems that the circulating resistance of air is large and the internal temperature is uneven can be solved; and the circulating efficiency of hot air circulation and the quality of pre-oxidation treatment are improved.
Description
Technical field
The present invention relates to carbon fibre preparing technical field, more particularly, to a kind of pre-oxidation furnace hot air circulating system.
Background technology
Existing pre-oxidation furnace hot air circulating system, return air channel and wind inlet channel are generally tied up and down inside pre-oxidation furnace
Structure arranges that return air channel is located at air intake passage top, and the cross section of two passages is in flat, and this arrangement is unfavorable for sky
The circulation of gas, especially when the length of air intake passage and return air channel is longer, gas flow resistance is significantly increased, significantly
Reduce hot air circulation circulation efficiency, and had a strong impact on the uniformity of air intake passage internal temperature, cause to pre-oxidize material
Quality Down.
The content of the invention
The present invention provides a kind of pre-oxidation furnace hot air circulating system, for overcoming the defect of prior art, it is intended to reduce gas
Body circulating resistance, improves the quality of hot air circulation circulation efficiency and pre-oxidation treatment.
For achieving the above object, the present invention provides a kind of pre-oxidation furnace hot air circulating system, and the pre-oxidation furnace hot blast is followed
Loop systems include body of heater, the hot air circulation passage being arranged in the body of heater；
The hot air circulation passage includes the air intake passage and return air channel of head and the tail；
At least one partition wall arranged along the furnace interior cross-sectional direction is provided with the body of heater, the partition wall will
The furnace interior is divided in the longitudinal direction at least two independent hot air circulation units；
Longitudinal baffle, the longitudinal baffle are provided with each described hot air circulation unit along the body of heater length direction
Top and bottom be connected with the inwall of the body of heater respectively；Lead between the two ends of the longitudinal baffle and the inboard wall of furnace body
Cross air distribution plate connection；Multiple wind distributing holes are provided with the air distribution plate；
The longitudinal baffle, air distribution plate and inboard wall of furnace body positioned at the longitudinal baffle two ends enclose the space for setting and are formed jointly
The air intake passage；
The longitudinal baffle, two air distribution plates, inboard wall of furnace body, partition wall enclose the space for setting and form the return air channel jointly.
Preferably, the air distribution plate includes lateral partitions, and the lateral partitions are connected with the one of side wall of the body of heater；
The return air channel surrounds the air intake passage.
The air intake passage inside wind direction for being preferably located at the partition wall both sides is opposite each other.
Preferably, it is provided with circulating fan in the return air channel in each described hot air circulation unit, adjacent to each other two
The air outlet direction of the circulating fan in the hot air circulation unit is opposite each other.
Preferably, the heater for heating internal gas is provided with the return air channel along cross-sectional direction.
Preferably, at least one wind-supplying mouth, the benefit are provided with the body of heater for constituting each hot air circulation unit
Air port connects the return air channel and ambient atmosphere of the hot air circulation unit.
The lateral partitions being preferably located in the same hot air circulation unit connect the one of the longitudinal baffle certainly
Side is gradually outward-dipping to the side for connecting the body of heater, and the longitudinal section of the air intake passage is trapezoidal.
Preferably, the angle between the lateral partitions and the longitudinal baffle is between 75 °～85 °.
Preferably, the angle between the lateral partitions and the longitudinal baffle is 80 °.
Preferably, the two ends of the air intake passage are respectively arranged with one group of godet for multilayer dose conveying, described
Godet is respectively positioned on outside the body of heater；
Between the lateral partitions and the body of heater diapire, between the partition wall and the body of heater diapire and the body of heater
It is respectively provided with two headwalls and wears a groove, described wearing be provided with a groove width and the adjustable door-plate of height.
The pre-oxidation furnace hot air circulating system that the present invention is provided, by partition wall by the longer pre-oxidation furnace body of heater of total length
The burner hearth in portion is divided into along its length multiple independent hot air circulation units, and each hot air circulation unit inside has independent
Hot air circulation passage, in preoxidation process, hot blast is by respective hot air circulation passage internal circulation flow, realizing overall following
Ring, the hot air circulation passage total kilometres in each hot air circulation unit are shorter, are conducive to internal gas circulation to flow, thermal loss
It is less with wind loss, improve the uniformity of air intake passage internal air temperature；And the air intake passage of hot air circulation passage with
Return air channel or so is arranged side by side, and one side air need not overcome weight of air during circulating, and reduce windage
Power, on the other hand, substantially reduces the volume of body of heater, reduces cost.
Description of the drawings
Fig. 1 is the overlooking the structure diagram of the pre-oxidation furnace hot air circulating system that the embodiment of the present invention one is provided；
Fig. 2 is the overlooking the structure diagram of the pre-oxidation furnace hot air circulating system that the embodiment of the present invention two is provided；
Fig. 3 is the overlooking the structure diagram of the pre-oxidation furnace hot air circulating system that the embodiment of the present invention three is provided；
Fig. 4 is the overlooking the structure diagram of the pre-oxidation furnace hot air circulating system that the embodiment of the present invention four is provided.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, the every other reality that ordinary skill people is obtained under the premise of creative work is not made
Example is applied, the scope of protection of the invention is belonged to.
Embodiment
As shown in figures 1-4, the present invention provides a kind of pre-oxidation furnace hot air circulating system, and the system includes body of heater 1, arranges
Hot air circulation passage 2 in the body of heater 1；The hot air circulation passage 2 includes the air intake passage 21 and return air channel of head and the tail
22；It is provided with least one partition wall 3 arranged along the furnace interior cross-sectional direction in the body of heater 1, the partition wall 3 is by institute
State and be divided at least two independent hot air circulation units inside body of heater 1 in the longitudinal direction；Each described hot air circulation unit
It is interior to be provided with longitudinal baffle 5 along the body of heater length direction, the top and bottom of the longitudinal baffle 5 respectively with the body of heater
1 inwall connection；Connected by air distribution plate 6 between the two ends of the longitudinal baffle 5 and the inboard wall of furnace body；The air distribution plate
Multiple wind distributing holes are provided with 6；The longitudinal baffle 5, the air distribution plate 6 positioned at the two ends of the longitudinal baffle 5 and the inwall of body of heater 1 are total to
The air intake passage 21 is formed with the space for setting is enclosed；The longitudinal baffle 5, two air distribution plates 6, the inwall of body of heater 1, partition wall 3 enclose jointly
If space form the return air channel 22.
In the embodiment of the present invention one, air distribution plate 6 is arranged along the bearing of trend of longitudinal baffle 5, the air intake passage 21 of formation
It is arranged in parallel with return air channel 22, referring to Fig. 1；In the embodiment of the present invention two, air distribution plate 6 is vertical with longitudinal baffle 5, formation
Air intake passage 21 is rectangular, and the return air channel 22 of formation takes the shape of the letter U, and it is peripheral to be surrounded on air intake passage 21, referring to Fig. 2；At this
In bright embodiment three, air distribution plate 6 is obliquely installed, the parallelogram of air intake passage 21 or trapezoidal of formation, or other are irregular
Tetragon, the return air channel 22 of formation takes the shape of the letter U, and it is peripheral to be surrounded on air intake passage 21, referring to Fig. 3.In the embodiment of the present invention four,
Air distribution plate 6 is obliquely installed, the parallelogram of return air channel 22 or trapezoidal of formation, or other irregular quadrilaterals, formation
Air intake passage 21 takes the shape of the letter U, and it is peripheral that air intake passage 21 is surrounded on return air channel 22, referring to Fig. 4；The effect of air distribution plate 6 is uniform
Cloth wind.
The pre-oxidation furnace hot air circulating system that the present invention is provided, by partition wall 3 by the longer pre-oxidation furnace body of heater 1 of total length
Internal burner hearth is divided into along its length multiple independent hot air circulation units, and each hot air circulation unit inside has independent
Hot air circulation passage 2, in preoxidation process, hot blast is overall by the respective internal circulation flow of hot air circulation passage 2, realizing
Circulation, the total kilometres of hot air circulation passage 2 in each hot air circulation unit are shorter, are conducive to internal gas circulation to flow, heat
Amount loss and wind loss are less, improve the uniformity of air intake passage internal air temperature, and then improve the matter of pre-oxidation treatment
Amount；And the air intake passage 21 of hot air circulation passage 2 is arranged side by side with return air channel 22 or so, and one side air is being circulated
During need not overcome weight of air, reduce wind resistance, on the other hand, substantially reduce the volume of body of heater, reduce into
This.
Preferably, the air distribution plate 6 includes lateral partitions, and the lateral partitions connect with the one of side wall of the body of heater 1
Connect；The return air channel 22 surrounds the air intake passage 21.Here encirclement includes full encirclement or semi-surrounding, real in the present invention one
In applying example, air intake passage 21 takes semi-surrounding, this knot with return air channel 22 is in the highly identical of vertical direction or is more or less the same
Structure is advantageous in that the shape of return air channel 22 is similar to the eddy flow shape of air-flow, and air-flow hinders in return air channel 22 during flowing
Power is less, and circulation efficiency is higher.In an alternative embodiment of the invention, air intake passage 21 and return air channel 22 are in vertical direction
Height on there is drop, in the shape of a spiral, and return air channel 22 is in being higher than air intake passage 21, air intake for whole hot air circulation passage 2
Passage 21 is enclosed in completely in return air channel 22, and air-flow is further reduced when entering in air intake passage 21 from return air channel 22
Resistance.
The inside wind direction of air intake passage 21 for being preferably located at the both sides of the partition wall 3 is opposite each other.This kind of structure, 3 liang of partition wall
The power size that air-flow in the hot air circulation passage 2 of side is applied on partition wall 3 is more or less the same, and opposite each other, and partition wall 3 is in flat
Weighing apparatus state, improves service life.
Preferably, in each described hot air circulation unit circulating fan 7 is provided with return air channel 22, it is adjacent to each other
The air outlet direction of the circulating fan 7 in hot air circulation unit described in two is opposite each other.In an embodiment of the present invention, positioned at phase
The air outlet of the circulating fan 7 in two adjacent return air channels 22 is in opposite direction, and causes hot-air to enter phase from from the inside of body of heater 1
In two adjacent air intake passages 21, flow to two ends respectively, be conducive to keeping the uniformity of the internal temperature of air intake passage 21.
Preferably, the heater 8 for heating internal gas is provided with the return air channel 22 along cross-sectional direction.Jing
Crossing the air of return air channel 22 can be heated.
Preferably, it is to improve pre-oxidation efficiency and quality, is respectively provided with the body of heater for constituting each hot air circulation unit
There is at least one wind-supplying mouth (not shown), the return air channel 22 that the wind-supplying mouth connects the hot air circulation unit is big with the external world
Gas.Can with air intake passage 21 outlet arrange exhaust apparatus (not shown), the oxygen in air in air intake passage 21 with it is defeated
Send material on device that oxidation reaction occurs, oxygen is consumed, exhaust gas section or all pass through row outside exhaust apparatus, lead in return air
Need to fill into fresh air in road 22, to guarantee the gas entered in air intake passage 21 in it is anti-referring to oxidation containing enough oxygen
Should.
The lateral partitions in the same hot air circulation unit are preferably located at from the connection longitudinal baffle 5
Side is gradually outward-dipping to the side for connecting the body of heater 1, and the longitudinal section of the air intake passage 21 is trapezoidal.Referring to Fig. 3, return
The shape of wind passage 22 is similar to the eddy flow shape of air-flow, and resistance is less during flowing in return air channel 22 for air-flow, circulation
Efficiency is higher.
Preferably, it is the even distributing wind effect of raising lateral partitions, between the lateral partitions and the longitudinal baffle 5
Angle is between 75 °～85 °.Preferably, when the angle between the lateral partitions and the longitudinal baffle 5 is 80 °, cloth wind
Uniformity is optimal.
Preferably, the two ends of the air intake passage 21 are respectively arranged with one group of godet for the conveying of multilayer dose 93,
Per group include at least one godet, it is multiple if can be in short transverse side by side；The outside left end of body of heater 1 is located in the present embodiment
For the first godet 91, be the second godet 92 positioned at the outside right-hand member of body of heater 1；
Between the lateral partitions and the body of heater diapire, between the partition wall and the body of heater diapire and the body of heater
It is respectively provided with two headwalls and wear a groove for what the material was passed through, described wearing be provided with a groove width and the adjustable door of height
Plate (not shown)；
Between the lateral partitions and the diapire of the body of heater 1, it is between the partition wall 3 and the diapire of the body of heater 1 and described
It is respectively provided with 1 liang of headwall of body of heater and wears a groove (not shown), material 93 bypasses the first wire leading pipe 91, passes through from described wearing in a groove,
Further around the second wire leading pipe 92 excessively, then pass through from wearing in a groove.
Driving means drive godet to rotate, and material 93 is moved therewith and through whole burner hearth, period is through multiple hot blasts
The segmentation of air intake passage 21 of cycling element carries out multiple pre-oxidation treatment, so as to ensure that each section material can be obtained sufficiently
Pre-oxidation treatment.
Finally it should be noted that：Above example only to illustrate technical scheme, rather than a limitation；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a kind of pre-oxidation furnace hot air circulating system, it is characterised in that the pre-oxidation furnace hot air circulating system includes body of heater, sets
Put the hot air circulation passage in the body of heater；
The hot air circulation passage includes the air intake passage and return air channel of head and the tail connection；
At least one partition wall arranged along the furnace interior cross-sectional direction is provided with the body of heater, the partition wall will be described
Furnace interior is divided in the longitudinal direction at least two independent hot air circulation units；
Longitudinal baffle, the top of the longitudinal baffle are provided with each described hot air circulation unit along the body of heater length direction
Portion and bottom are connected respectively with the inwall of the body of heater；Pass through cloth between the two ends of the longitudinal baffle and the inboard wall of furnace body
Aerofoil connects；Multiple wind distributing holes are provided with the air distribution plate；
The longitudinal baffle, air distribution plate and inboard wall of furnace body positioned at the longitudinal baffle two ends enclose the space for setting and form described jointly
Air intake passage；
The longitudinal baffle, two air distribution plates, inboard wall of furnace body, partition wall enclose the space for setting and form the return air channel jointly.
2. pre-oxidation furnace hot air circulating system according to claim 1, it is characterised in that the air distribution plate include laterally every
Plate, the lateral partitions are connected with the one of side wall of the body of heater；
The return air channel surrounds the air intake passage.
3. pre-oxidation furnace hot air circulating system according to claim 1, it is characterised in that positioned at entering for the partition wall both sides
Wind channel interior wind direction is opposite each other.
4. pre-oxidation furnace hot air circulating system according to claim 3, it is characterised in that each described hot air circulation unit
It is provided with circulating fan in interior return air channel, the air outlet of the circulating fan in hot air circulation unit described in adjacent to each other two
Direction is opposite each other.
5. pre-oxidation furnace hot air circulating system according to claim 1, it is characterised in that along transversal in the return air channel
Face direction is provided with the heater for heating internal gas.
6. pre-oxidation furnace hot air circulating system according to claim 1, it is characterised in that constitute each described hot air circulation
Be provided with least one wind-supplying mouth in the body of heater of unit, the wind-supplying mouth connect the return air channel of the hot air circulation unit with
Ambient atmosphere.
7. pre-oxidation furnace hot air circulating system according to claim 2, it is characterised in that positioned at the same hot air circulation
The lateral partitions in unit are gradually outward-dipping to the side for connecting the body of heater from the side for connecting the longitudinal baffle,
The longitudinal section of the air intake passage is trapezoidal.
8. pre-oxidation furnace hot air circulating system according to claim 7, it is characterised in that the lateral partitions are vertical with described
To the angle between dividing plate between 75 °～85 °.
9. pre-oxidation furnace hot air circulating system according to claim 8, it is characterised in that the lateral partitions are vertical with described
It it is 80 ° to the angle between dividing plate.
10. the pre-oxidation furnace hot air circulating system according to any one of claim 2～9, it is characterised in that the air intake leads to
The two ends in road are respectively arranged with one group of godet for multilayer dose conveying, and the godet is respectively positioned on outside the body of heater；
Between the lateral partitions and the body of heater diapire, between the partition wall and the body of heater diapire and body of heater two ends
It is respectively provided with wall and wear a groove for what the material was passed through, described wearing be provided with a groove width and the adjustable door-plate of height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611192841.2A CN106637516B (en) | 2016-12-21 | 2016-12-21 | Pre-oxidation furnace hot air circulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611192841.2A CN106637516B (en) | 2016-12-21 | 2016-12-21 | Pre-oxidation furnace hot air circulating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106637516A true CN106637516A (en) | 2017-05-10 |
| CN106637516B CN106637516B (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611192841.2A Active CN106637516B (en) | 2016-12-21 | 2016-12-21 | Pre-oxidation furnace hot air circulating system |
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| CN (1) | CN106637516B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972234A (en) * | 2019-05-08 | 2019-07-05 | 广州赛奥碳纤维技术有限公司 | A kind of tow parallel oxidation furnace and oxidation furnaces for realizing more operating temperatures |
| CN110284217A (en) * | 2019-06-24 | 2019-09-27 | 湖南东映碳材料科技有限公司 | A kind of knockdown recirculation furnace |
| CN110578186A (en) * | 2019-09-18 | 2019-12-17 | 浙江精功科技股份有限公司 | Pre-oxidation furnace with end-to-end blowing structure |
| CN110578189A (en) * | 2019-09-18 | 2019-12-17 | 浙江精功科技股份有限公司 | Air return box for pre-oxidation furnace and pre-oxidation furnace |
| CN114318592A (en) * | 2022-01-28 | 2022-04-12 | 新创碳谷控股有限公司 | Novel carbon fiber pre-oxidation furnace with air distribution structure |
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| CN109972234A (en) * | 2019-05-08 | 2019-07-05 | 广州赛奥碳纤维技术有限公司 | A kind of tow parallel oxidation furnace and oxidation furnaces for realizing more operating temperatures |
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| CN110578189A (en) * | 2019-09-18 | 2019-12-17 | 浙江精功科技股份有限公司 | Air return box for pre-oxidation furnace and pre-oxidation furnace |
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| CN114318592A (en) * | 2022-01-28 | 2022-04-12 | 新创碳谷控股有限公司 | Novel carbon fiber pre-oxidation furnace with air distribution structure |
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| Publication number | Publication date |
|---|---|
| CN106637516B (en) | 2019-04-02 |
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