CN109668430A - Roller kilns - Google Patents
Roller kilns Download PDFInfo
- Publication number
- CN109668430A CN109668430A CN201811638093.5A CN201811638093A CN109668430A CN 109668430 A CN109668430 A CN 109668430A CN 201811638093 A CN201811638093 A CN 201811638093A CN 109668430 A CN109668430 A CN 109668430A
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- China
- Prior art keywords
- burner hearth
- air inlet
- section
- roller kilns
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
- F27B9/2407—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
- F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/32—Casings
- F27B9/34—Arrangements of linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
- F27B2009/122—Preheating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
- F27B2009/3607—Heaters located above the track of the charge
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
Abstract
The invention discloses a kind of roller kilns, including the furnace body with burner hearth, heating device and device for transporting objects are installed in burner hearth, burner hearth is connected with the bottom ventilation device for ventilating from burner hearth bottom into burner hearth, and the direction that bottom ventilation device is passed through gas into burner hearth is the non-direction towards device for transporting objects.The present invention has many advantages, such as good temperature uniformity, energy consumption and at low cost, easily controllable.
Description
Technical field
The present invention relates to heat treatment kiln technical fields, and in particular to a kind of roller kilns.
Background technique
The sintering process of the materials such as lithium ion battery material is substantially realized by roller kilns at this stage, with new energy
The rapid development of ev industry, this temperature to roller kilns higher and higher to the coherence request of the materials such as battery material
Higher requirements are also raised for uniformity.Traditional double-layer roller hearth furnace is deposited in terms of temperature uniformity because saggar bilayer stacks
In inborn bottleneck, cause the consistency of upper and lower level saggar material poor, therefore under the premise of guaranteeing enough production capacities, width is more
Big single layer roller kilns have become the development trend of battery material roller kilns.Although single layer roller kilns solve on double-layer roller hearth furnace
The problem of lower saggar material consistency difference, but its there is also following problems:
(1) influence of the air inlet to in-furnace temperature uniformity.Since roller kilns at work want furnace pressure and gas concentration
It asks, the supplement into burner hearth is needed to be passed through gas during the work time, and the general temperature of gas for being passed through burner hearth is lower, cryogenic gas
The equalized temperature in burner hearth can be upset when into burner hearth, influence temperature uniformity, and then influence homogeneity of product, especially gas
Be passed through the air-flow formed after burner hearth can be decreased obviously by the temperature in region, it is low when material is located at the air-flow by region
Influence of the warm air to homogeneity of product is very big；
(2) furnace width increases the influence to temperature uniformity.With the increase of furnace width, on burner hearth cross section everybody
The temperature difference set can also further increase；
(3) the higher problem of energy consumption.Since burner hearth becomes larger, heat dissipation area increases, and energy consumption is higher.
To improve temperature uniformity in burner hearth, existing way is all using heating device before gas is passed through burner hearth to gas
Body is heated, there is a problem of energy consumption and it is at high cost, control difficulty is big, and have to the raising degree of temperature uniformity in burner hearth
Limit.And it is energy consumption when reducing roller kilns work, it is all that the insulating layer on furnace wall is improved by optimization to realize.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the shortcomings of the prior art, provide a kind of temperature uniformity it is good,
Energy consumption and at low cost, easily controllable roller kilns.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of roller kilns are equipped with heating device and device for transporting objects in the burner hearth including the furnace body with burner hearth,
The burner hearth is connected with the bottom ventilation device for ventilating from burner hearth bottom into burner hearth, and the bottom ventilation device is to burner hearth
The direction for being inside passed through gas is the non-direction towards device for transporting objects.
As a further improvement of the above technical scheme:
The bottom ventilation device includes bottom inflow pipeline and more than one bottom air inlet set on burner hearth bottom, respectively
Bottom air inlet and the bottom inflow pipeline connection correspond to each bottom air inlet in the burner hearth and are equipped with one and block
Part, the block piece be located at the top of corresponding bottom air inlet and make the gas blown out from bottom air inlet along block piece bottom surface to
Surrounding diffusion.
From medium position, edge is extended obliquely downward around for the bottom surface of the block piece.
The heating device includes two groups of heating components, and two groups of heating components are respectively corresponded positioned at the upper of device for transporting objects
Side and lower section, each heating component includes several heating elements being successively spaced along device for transporting objects conveying material direction, each to hide
Block piece is located at the lower section of heating component below device for transporting objects, is equipped with a heating unit right above each bottom air inlet
Part.
The bottom inflow pipeline includes main line, and each bottom air inlet is connected by a bye-pass and the main line
Logical, the main line and/or bye-pass at least one section of nonlinear type channel section, the nonlinear type channel section are located at furnace body
In furnace wall.
The nonlinear type channel section is in Z-shaped or U-shaped or L-type or camber or ring-like.
The furnace wall of the furnace body of the burner hearth bottom is made of refractory brick, and the nonlinear type channel section is directly provided with
In refractory brick.
The bottom ventilation device includes bottom inflow pipeline and more than one outlet head set on burner hearth bottom, it is described go out
Gas head, which is equipped with more than one, makes the gas outlet that gas is blown out in the horizontal direction.
The burner hearth is connected with the side air-breather for ventilating from burner hearth side into burner hearth, the side ventilation dress
Set including side air inlet pipeline and set on more than one side air inlet of burner hearth side, each side air inlet and the side into
Air pipe connection, at least one section of the side air inlet pipeline is preheating section, and the preheating section is located at the furnace body of roof of the furnace
In furnace wall.
The side air inlet pipeline includes inlet main pipe and at least one described preheating section, each preheating section from furnace body one
Side extends to the other side, and the middle part of each preheating section is connected to by air intake branch with inlet main pipe, the both ends point of each preheating section
It is not connected with more than one side air inlet.
Compared with the prior art, the advantages of the present invention are as follows: in roller kilns of the invention, since bottom ventilation device is to furnace
The direction that gas is passed through in thorax is the non-direction towards device for transporting objects, is passed by bottom ventilation device low in burner hearth
Wet body will not directly blow to device for transporting objects, but can be with longer path and longer time and high-temperature gas original in burner hearth
It is moved near device for transporting objects again after coming into full contact with heating, the cryogenic gas for having just enter into burner hearth can be weakened to material conveying dress
The influence for setting neighbouring temperature field and air-flowing environment greatly improves the temperature uniformity near device for transporting objects, namely greatly improves
Temperature uniformity on device for transporting objects near material, to improve product quality.Also, compared to traditional technology, the roller
Road kiln furnitures have the advantages that energy consumption and at low cost, easily controllable.
Detailed description of the invention
Fig. 1 is the front view structure simplified schematic diagram of roller kilns.
Fig. 2 is side schematic cross-sectional view of the roller kilns at bottom ventilation device.
Fig. 3 is side schematic cross-sectional view of the roller kilns at top vent device.
Marginal data:
1, furnace body；11, burner hearth；2, heating device；3, device for transporting objects；4, bottom ventilation device；41, bottom inflow
Mouthful；42, block piece；43, main line；44, bye-pass；45, nonlinear type channel section；5, side air-breather；51, side air inlet
Mouthful；52, preheating section；53, inlet main pipe；54, air intake branch.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As depicted in figs. 1 and 2, the roller kilns of the present embodiment are equipped in burner hearth 11 including the furnace body 1 with burner hearth 11
Heating device 2 and device for transporting objects 3, burner hearth 11 are connected with the bottom ventilation for ventilating from 11 bottom of burner hearth into burner hearth 11
Device 4, the direction that bottom ventilation device 4 is passed through gas into burner hearth 11 is non-direction namely bottom towards device for transporting objects 3
The gas that portion's air-breather 4 is passed through into burner hearth 11 not directly faces the flowing of device for transporting objects 3.In the roller kilns, the bottom of due to
The direction that portion's air-breather 4 is passed through gas into burner hearth 11 is the non-direction towards device for transporting objects 3, is filled by bottom ventilation
Device for transporting objects 3 will not directly be blowed to by setting the cryogenic gas that 4 are passed into burner hearth 11, but can with longer path and it is longer when
Between with original high-temperature gas in burner hearth 11 come into full contact with heating after moved near device for transporting objects 3 again, can weaken and have just enter into
Influence of the cryogenic gas of burner hearth 11 to temperature field and air-flowing environment near device for transporting objects 3, greatly improves device for transporting objects 3
Neighbouring temperature uniformity, namely the temperature uniformity on device for transporting objects 3 near material is greatly improved, to improve product
Quality.Also, compared to traditional technology, which has the advantages that energy consumption and at low cost, easily controllable.
In the present embodiment, bottom ventilation device 4 includes bottom inflow pipeline and more than one bottom set on 11 bottom of burner hearth
Portion's air inlet 41, each bottom air inlet 41 and bottom inflow pipeline connection correspond to each bottom air inlet 41 in burner hearth 11 and are all provided with
There is a block piece 42, block piece 42 is located at the top of corresponding bottom air inlet 41 and makes the gas blown out from bottom air inlet 41
It is spread around along 42 bottom surface of block piece.The gas for entering burner hearth 11 from bottom air inlet 41 expands around along 42 bottom surface of block piece
It dissipates, can be moved near device for transporting objects 3 by longer path in burner hearth 11, so that the cryogenic gas and burner hearth that are passed through
The time of original high-temperature gas contact heating is longer in 11, and temperature when moving near device for transporting objects 3 is higher, thus greatly
It is big to weaken to temperature profile effect near device for transporting objects 3, improve the temperature uniformity near device for transporting objects 3.This kind
The structure of bottom ventilation device 4 is simple, at low cost；And block piece 42 spreads gas around along 42 bottom surface of block piece, gas
The shunting effect of body is good, quickly rises conducive to the cryogenic gas being passed through with full and uniform contact of high-temperature gas original in burner hearth 11
Temperature can further weaken influence of the cryogenic gas being passed through to temperature uniformity in burner hearth 11.
In the present embodiment, from medium position, edge is extended obliquely downward around for the bottom surface of block piece 42, from bottom inflow
After the gases that mouth 41 is passed through burner hearth 11 blow to the bottom surface of block piece 42, which expand gas around along direction diagonally downward
It dissipates, the gas spread diagonally downward is first contacted with 11 bottom surface of burner hearth, then upward fold return motion, can not only increase gas motion the bottom of to
The path of portion's air-breather 4, and air velocity is slowed down, keep the gas being passed through and contact heating-up time in burner hearth 11 longer, together
When the gas that is passed through it is small to the disturbance of gas in burner hearth 11, can further weaken to the neighbouring temperature field of bottom ventilation device 4
It influences.
Preferably, bottom air inlet 41 is located at the underface in the middle part of the bottom surface of block piece 42, so that from bottom air inlet 41
The gas for being passed through burner hearth 11 directly blows in the middle part of the bottom surface of block piece 42, uniformly spreads around along 42 bottom surface of block piece,
Temperature uniformity in the shunting effect and burner hearth 11 of gas can be improved.
In the present embodiment, heating device 2 includes two groups of heating components, and two groups of heating components are respectively corresponded to be conveyed positioned at material
Above and below device 3, each heating component includes several heating being successively spaced along the conveying of device for transporting objects 3 material direction
Element, each block piece 42 are located at the lower section of 3 lower section heating component of device for transporting objects, and the surface of each bottom air inlet 41 is equal
Equipped with a heating element.In this way, moved from the cryogenic gas that bottom air inlet 41 is passed through burner hearth 11 to device for transporting objects 3
It can adequately be heated element heat temperature raising in the process, be more advantageous to raising temperature uniformity.Also, due to point of block piece 42
Stream effect, the time of contact of the gas and heating element that are passed through is longer, when reaching the gas being passed through near device for transporting objects 3
Temperature is higher, is conducive to the temperature uniformity nearby of device for transporting objects 3.
The device for transporting objects 3 of the present embodiment is roller bar type conveying device used by existing roller kilns comprising rotation
The conveying roller stick being mounted on furnace body 1, several conveying roller sticks are along conveying direction successively arranged for interval.The both ends of each conveying roller stick are passed through
The furnace wall for wearing furnace body 1 is extend out to outside furnace body 1, is equipped on 1 outer wall of furnace body gap between 1 furnace wall of conveying roller stick and furnace body is close
The gas-tight silo of envelope, it is to realize that burner hearth 11 and external environment is completely isolated.
In the present embodiment, bottom inflow pipeline includes main line 43, and each bottom air inlet 41 passes through a bye-pass 44
It is connected to main line 43, main line 43 and at least one section of nonlinear type channel section 45 of bye-pass 44, nonlinear type channel section
45 are located in the furnace wall of furnace body 1.The nonlinear type channel section 45 increases residence time of the gas in the furnace wall of furnace body 1, makes
Gas can be preheating to higher temperature by the furnace wall for the furnace body 1 that must be heated, and can be weakened cryogenic gas and be passed through burner hearth 11 to burner hearth
The influence of the temperature difference in 11 improves the uniformity of temperature in burner hearth 11；Also, it is to be heated using the waste heat of furnace body 1 to gas,
It does not need that heating component in addition is arranged, can reach the purpose saved energy consumption and reduce cost.In other embodiments, can also only make
Main line 43 or bye-pass 44 are equipped with above-mentioned nonlinear type channel section 45.
In the present embodiment, the nonlinear type channel section 45 of main line 43 is in Z-shaped, the nonlinear type channel section of bye-pass 44
45 is U-shaped, and structure is simple, is easy to make.In other embodiments, above-mentioned nonlinear type channel section 45 can also it is L-shaped or
Camber or the other forms such as ring-like.
In the present embodiment, the furnace wall of the furnace body 1 of 11 bottom of burner hearth is made of refractory brick, and nonlinear type channel section 45 is straight
It connects and is provided in refractory brick.Partial gas in nonlinear type channel section 45 can also be by between refractory brick and in refractory brick
The hole in portion penetrates into burner hearth 11, is not only conducive to improve the uniformity of atmosphere in burner hearth 11, and this portion gas and refractory brick
Contact more sufficiently, time of contact it is longer, pre-heat effect is more preferable, be conducive to improve burner hearth 11 in atmosphere evenness.Above-mentioned refractory brick
For it is existing heat treatment kiln furnace lining used by maturation component, be made of the mushy refractory material of High-Alumina, with compared with
Good thermal capacitance.
In the present embodiment, 11 bottom of burner hearth be equipped with several bottom air inlets 41, several bottom air inlets 41 be divided into two groups with
Suitable for reading group, mouth group more than two conveys material direction (11 length direction of burner hearth) successively arranged for interval along device for transporting objects 3, often
There are group mouth group multiple edges to convey the horizontal direction of material direction (11 width direction of burner hearth) successively perpendicular to device for transporting objects 3
Spaced apart bottom air inlet 41 forms the multiple admissions being evenly arranged in 11 bottom of burner hearth in this way, can further mention
Temperature uniformity in blast furnace hearth 11.Preferably, multiple bottom air inlets 41 of every group of mouth group are divided into mouth grouping more than two again, often
Group mouth grouping include at least one bottom air inlet 41, every group of mouth grouping all bottom air inlets 41 be all connected with one it is independent
Main line 43, every main line 43 are equipped with the flowmeter for adjusting flow, can flexibly control Inlet Position and air inlet in this way
Amount.
In the present embodiment, as shown in figure 3, burner hearth 11 is connected with the side for ventilating from 11 side of burner hearth into burner hearth 11
Air-breather 5, side air-breather 5 include side air inlet pipeline and more than one side air inlet set on 11 side of burner hearth
51, each side air inlet 51 is connected to side air inlet pipeline, and at least one section of side air inlet pipeline is preheating section 52, preheating section 52
In the furnace wall of the furnace body 1 at 11 top of burner hearth.In roller kilns normally produce, the furnace wall of furnace body 1 can absorb amount of heat, and
Constantly outside conduction and radiations heat energy, at least one section of side air inlet pipeline is preheating section 52, and preheating section 52 is located at the top of burner hearth 11
In the furnace wall of the furnace body 1 in portion, heat temperature raising can be carried out to the gas in preheating section 52, the gas after heat temperature raising enters burner hearth 11
Gas can be weakened and be passed through influence of the burner hearth 11 to the temperature difference in burner hearth 11, improve temperature uniformity in burner hearth 11.It also, is to utilize furnace
The waste heat of body 1 heats gas, does not need that heating component in addition is arranged, and can reach the mesh saved energy consumption and reduce cost
's.Preheating section 52 is located in the furnace wall of the furnace body 1 at 11 top of burner hearth, the temperature after the gas in preheating section 52 can be made to preheat is more
It is high.
In the present embodiment, side air inlet pipeline includes inlet main pipe 53 and at least one preheating section 52, each preheating section 52
The other side is extended to from the side of furnace body 1, the middle part of each preheating section 52 is connected to by air intake branch 54 with inlet main pipe 53, often
The both ends of a preheating section 52 are connected separately with more than one side air inlet 51.Air intake branch 54 and the connectivity part of preheating section 52 arrive
52 both ends of preheating section are equidistant, and entering 52 gas of preheating section from air intake branch 54 can flow to 52 both ends of preheating section respectively
And burner hearth 11 is entered by side air inlet 51, due to the movement road of the gas that is flowed to 52 both ends of preheating section in preheating section 52
Electrical path length is equal, and is extended from the middle part of furnace body 1 to 1 two sides of furnace body, and the temperature being heated up of the two is essentially identical,
The influence after being passed through burner hearth 11 to temperature uniformity in burner hearth 11 can be weakened.Preferably, each 52 one end of preheating section connects
Side air inlet 51 is located at the side of burner hearth 11, and the side air inlet 51 of other end connection is located at the other side of burner hearth 11.
In the present embodiment, burner hearth 11 conveys material direction along device for transporting objects 3 and is divided into the warming-up section successively to connect, heat preservation
Section and temperature descending section, warming-up section and soaking zone are respectively equipped with side air-breather 5, the side ventilation dress of warming-up section and/or soaking zone
Set 5 side air inlet pipeline pass through temperature descending section at the top of furnace body 1 furnace wall.The side air inlet pipeline of warming-up section and/or soaking zone
The furnace wall of furnace body 1 at the top of temperature descending section, the furnace wall of the furnace body 1 at the top of temperature descending section can with the gas in the air inlet pipeline of side into
Row heat exchange, is on the one hand heated using the gas in the furnace wall counter-lateral quadrents air inlet pipeline of the furnace body of temperature descending section 1, can be further
It saves energy consumption and reduces cost, the furnace wall heat of the furnace body 1 of the gas absorbing, cooling section in the air inlet pipeline of another aspect side, benefit
In the cooling efficiency for improving temperature descending section.
In the present embodiment, it is preferred that burner hearth 11 conveys material direction along device for transporting objects 3 and is divided into the heating successively to connect
Section, soaking zone and temperature descending section, warming-up section and soaking zone are respectively equipped with side air-breather 5, the side of warming-up section and/or soaking zone
The side air inlet pipeline of air-breather 5 passes through the furnace wall of the furnace body 1 at the top of temperature descending section.The side of warming-up section and/or soaking zone into
Air pipe passes through the furnace wall of the furnace body 1 of temperature descending section, and the furnace wall of the furnace body 1 of temperature descending section can be carried out with the gas in the air inlet pipeline of side
Heat exchange, is on the one hand heated using the gas in the furnace wall counter-lateral quadrents air inlet pipeline of the furnace body of temperature descending section 1, can further be saved
It saves energy consumption and reduces cost, the furnace wall heat of the furnace body 1 of the gas absorbing, cooling section in the air inlet pipeline of another aspect side is conducive to
Improve the cooling efficiency of temperature descending section.
In the present embodiment, the top furnace wall of furnace body 1 includes furnace shell and the multilayer insulant layer on the inside of furnace shell, to subtract
The loss of few heat.Preheating section 52 is arranged between furnace shell and adiabator layer.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example.To those of ordinary skill in the art, obtained improvement and change in the case where not departing from the technology of the present invention concept thereof
It changes and also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of roller kilns, including the furnace body (1) with burner hearth (11), be equipped in the burner hearth (11) heating device (2) and
Device for transporting objects (3), it is logical that the burner hearth (11) is connected with the bottom for ventilating from burner hearth (11) bottom into burner hearth (11)
Device of air (4), it is characterised in that: the direction that the bottom ventilation device (4) is passed through gas into burner hearth (11) is non-towards object
The direction of material conveying device (3).
2. roller kilns according to claim 1, it is characterised in that: the bottom ventilation device (4) includes bottom inflow pipe
Road and more than one bottom air inlet (41) for being set to burner hearth (11) bottom, each bottom air inlet (41) and the bottom inflow pipe
Road is connected to, and is corresponded to each bottom air inlet (41) in the burner hearth (11) and is equipped with a block piece (42), the block piece
(42) it is located at the top of corresponding bottom air inlet (41) and makes the gas blown out from bottom air inlet (41) along block piece (42) bottom
It is spread towards surrounding.
3. roller kilns according to claim 2, it is characterised in that: the bottom surface of the block piece (42) is from medium position to four
Circumferential edges extend obliquely downward.
4. roller kilns according to claim 2, it is characterised in that: the heating device (2) include two groups of heating components, two
Group heating component respectively corresponds above and below device for transporting objects (3), and each heating component includes several defeated along material
Device (3) conveying heating element that material direction is successively spaced is sent, each block piece (42) is located at below device for transporting objects (3) and adds
The lower section of hot component is equipped with a heating element right above each bottom air inlet (41).
5. roller kilns according to claim 2, it is characterised in that: the bottom inflow pipeline includes main line (43), often
A bottom air inlet (41) is connected to by a bye-pass (44) with the main line (43), the main line (43) and/or branch
Pipeline (44) at least one section of nonlinear type channel section (45), the nonlinear type channel section (45) are located at the furnace wall of furnace body (1)
It is interior.
6. roller kilns according to claim 5, it is characterised in that: the nonlinear type channel section (45) is in Z-shaped or U-shaped
Either L-type or camber or ring-like.
7. roller kilns according to claim 5, it is characterised in that: the furnace wall of the furnace body (1) of burner hearth (11) bottom by
Fire resisting brick masonry forms, and the nonlinear type channel section (45) is directly provided in refractory brick.
8. roller kilns according to claim 1, it is characterised in that: the bottom ventilation device (4) includes bottom inflow pipe
Road and more than one the outlet head for being set to burner hearth (11) bottom, the outlet head, which is equipped with more than one, blows gas in the horizontal direction
Gas outlet out.
9. roller kilns according to any one of claim 1 to 8, it is characterised in that: the burner hearth (11), which is connected with, to be used for
From burner hearth (11) side to the side air-breather (5) ventilated in burner hearth (11), the side air-breather (5) include side into
Air pipe and more than one the side air inlet (51) for being set to burner hearth (11) side, each side air inlet (51) and the side into
Air pipe connection, at least one section of the side air inlet pipeline is preheating section (52), and the preheating section (52) is located at burner hearth (11)
In the furnace wall of the furnace body (1) at top.
10. roller kilns according to claim 9, it is characterised in that: the side air inlet pipeline includes inlet main pipe (53)
The other side, each preheating section are extended to the side of preheating section described at least one (52), each preheating section (52) from furnace body (1)
(52) middle part is connected to by air intake branch (54) with inlet main pipe (53), and the both ends of each preheating section (52) are connected separately with one
It is a with upper lateral part air inlet (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811638093.5A CN109668430A (en) | 2018-12-29 | 2018-12-29 | Roller kilns |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811638093.5A CN109668430A (en) | 2018-12-29 | 2018-12-29 | Roller kilns |
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| Publication Number | Publication Date |
|---|---|
| CN109668430A true CN109668430A (en) | 2019-04-23 |
Family
ID=66147502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811638093.5A Pending CN109668430A (en) | 2018-12-29 | 2018-12-29 | Roller kilns |
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| Country | Link |
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| CN (1) | CN109668430A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022073295A1 (en) * | 2020-10-10 | 2022-04-14 | 苏州汇科机电设备有限公司 | Electronic kiln having inlet air preheating function |
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