CN108302932A - A kind of horizontal air duct structure of carbon-calcining rotary kiln - Google Patents
A kind of horizontal air duct structure of carbon-calcining rotary kiln Download PDFInfo
- Publication number
- CN108302932A CN108302932A CN201810037917.7A CN201810037917A CN108302932A CN 108302932 A CN108302932 A CN 108302932A CN 201810037917 A CN201810037917 A CN 201810037917A CN 108302932 A CN108302932 A CN 108302932A
- Authority
- CN
- China
- Prior art keywords
- kiln
- air duct
- rotary kiln
- air
- carbon
- 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.)
- Pending
Links
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
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/36—Arrangements of air or gas supply devices
- F27B7/362—Introducing gas into the drum axially or through the wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/03—Calcining
Abstract
The present invention provides a kind of horizontal air duct structures of carbon-calcining rotary kiln, including air duct, kiln outer air duct in rotary kiln kiln body, kiln, and kiln outer air duct is connected to by the air inlet in rotary kiln kiln body with air duct in kiln；Air duct is arranged in kiln liner castable refractory protective layer in the kiln, is passed through in rotary kiln body along rotary kiln kiln body is circumferentially in the arc-shaped, the air outlet in air duct wall longitudinal direction lineal layout along rotary kiln body in kiln.Compared with prior art, the beneficial effects of the invention are as follows：Air duct compression strength is high, structural stability is good, can avoid air hose outer wall castable fall off and powder pour in down a chimney air duct enter wind turbine and caused by air duct and wind turbine damage, so as to avoid rotary kiln temperature fall time length caused by due to air hose repair, cooling extent is big, service life is short the problems such as.
Description
Technical field
The present invention relates to the carbon-calcining rotary kiln of charcoal element production field more particularly to a kind of carbon-calcining rotary kiln are horizontal
Air duct structure.
Background technology
Carbon-calcining rotary kiln is the important equipment calcined in Carbon Materials process of producing product, two, the three of traditional rotary kiln
Secondary air hose is vertical air-duct, is to stretch to metallic conduit inside kiln body through kiln wall air inlet, and air hose outer wall welds heating resisting metal
Anchoring piece wraps up in castable refractory protective layer, and then resists high temperature thermal shocking in kiln outside.Air hose stretches into the purpose in kiln, is to prevent
Material pours in down a chimney when kiln body rotates into air duct, into wind turbine, wind turbine is caused to damage.
This structure two, tertiary air feed system have the shortcomings that following several respects：
1) refractory material protective layer is wrapped up in outside air hose, cold wind is blown into kiln from metal pipe internal surface when due to work, and it is outer
The refractory material protective layer wrapped up in stretches into kiln and bears high temperature, and metal tube is different from the coefficient of thermal expansion of refractory material in addition, makes
The castable refractory sag of protecting coating of kiln inside points, furthermore the fire resisting in rotary kiln operation process of penetration type air hose are stretched at air hose
Castable protective layer is easy to fall off due to gravity, and then burns metal tube, and this air hose, which repairs, needs the kiln that cools down, stops, temperature in kiln
Degree frequently changes the service life for reducing Castings of rotary kiln；
2) due on above-mentioned air duct structure defect and working environment it is severe, service life is shorter.In operation process
In, air hose castable dropping situations are encountered, kiln rotating speed need to be reduced, kiln hood is opened and takes out the part that falls off, this process influences entire revolution
The thermal field stability of kiln, the castable refractory to fall off influence product degree of purity, increase product ash content, influence product quality, fall off
It need to stop kiln when serious and repair air hose, due to waiting for the time of kiln body cooling longer, cause maintenance time long, directly reduce rotary kiln
Production capacity；
3) due to the presence of aforesaid drawbacks, lead to rotate high-temperature coke in kiln body and pour in down a chimney from air port into air duct, into wind turbine,
Wind turbine is easily burnt, the personal safety of operating personnel can be jeopardized when serious；
4) it is produced in order to not influence calcining, is usually all to take simplest measure after producing a period of time, by air port
Block, cause calm supply in kiln, traditional air duct structure (straight-through, without bending) during blocking there are larger security risk,
Increase maintenance difficulty；
5) since air hose damages, only a small amount of or calm infeed, the fugitive constituent that material generates in calcination process in kiln is not
It can fully burn, the temperature and length of burning zone in kiln is made to cannot be satisfied expected technological requirement, directly affect matter burnt after forging
Amount；In order to keep reaching in kiln basic temperature condition, kiln hood burner needs continuous heat supply, can not achieve no fuel and forges
It burns；Not sufficiently combusted fugitive constituent with flow of flue gas to kiln tail or even heavy grey room burning, or even is expelled directly out, makes a large amount of high fevers
Value combustibles slattern, while also resulting in carbon calcination tail gas pollution.
On the basis of traditional vertical air hose, the patent developed by Shenyang Aluminium Magnesium Design ＆ Research Inst《Inner liner of rotary kiln and
Its second tuyere structure》, the patent No.：It proposes to use fold-line-shaped air duct, the disadvantage of such air channel structure in ZL200820220258.2
End is：1, the compression strength in fold-line-shaped air duct is low, and stable structure is poor, and castable refractory protective layer is easy to fall off, and shortens revolution
The service life of castable refractory protective layer near kiln air port；2, fold-line-shaped air duct work progress is complicated, is unfavorable for repairing；3, powder
When material enters air duct, rotary kiln operation process middle polyline shape air channel structure can hinder powder to be back to inside kiln body, and powder is being rolled over
Enter wind turbine after being accumulated in linear air duct；4, rotary kiln air inlet is located at repose angle of material in kiln hereinafter, powder can not be effectively prevent
Material pours in down a chimney into wind turbine, causes wind turbine to damage, influences product quality and rotary kiln running period.
Invention content
The purpose of the present invention is to solve the deficiencies in the prior art, and it is horizontal to provide a kind of carbon-calcining rotary kiln
Air duct structure, air duct compression strength are high, and structural stability is good, can avoid air hose outer wall castable fall off and powder pour in down a chimney air duct into
Enter wind turbine and caused by air duct and wind turbine damage, so as to avoid rotary kiln temperature fall time is long, drops caused by due to air hose repair
The problems such as warm amplitude is big, service life is short.
To achieve the above object, the present invention is realized using following technical scheme：
A kind of horizontal air duct structure of carbon-calcining rotary kiln, including air duct, kiln outer air duct in rotary kiln kiln body, kiln, outside kiln
Air duct is connected to by the air inlet in rotary kiln kiln body with air duct in kiln；Air duct is arranged in kiln liner castable refractory in the kiln
In protective layer, it is passed through in rotary kiln body along rotary kiln kiln body is circumferentially in the arc-shaped, the air outlet in air duct is along rotary kiln in kiln
Internal wall longitudinal direction lineal layout.
It is equipped with connectivity structure part in the air inlet, every group of kiln outer air duct switchs to single-pass after being connected by connectivity structure part
Air duct in the kiln of road or multichannel.
The position of the air inlet is arranged in kiln material and goes to sleep angle or more.
Described its material of connectivity structure part is aluminium, steel, metal alloy, atactic copolymerized polypropene or polyvinyl chloride.
Air duct is the segmentation button of aluminium, steel, metal alloy, atactic copolymerized polypropene or polyvinyl chloride in the kiln
Or integral passage.
The kiln outer air duct connects one or more wind turbine air feed.
The air outlet in air duct is concordant with castable refractory protective layer in rotary kiln kiln body kiln in the kiln.
Compared with prior art, the beneficial effects of the invention are as follows：
1) air channel structure in arc-shaped kiln of the invention, changes original vertical air-duct or fold-line-shaped air duct structure, works as kiln
When interior duct outlet is in solid accumulation area, powder enters air port in kiln, can only accumulate in some in air duct in kiln and be easy to
On the actuated position of outflow, with the rotation of rotary kiln, the powder in air duct can also flow back in rotary kiln again, therefore turn round
In kiln operational process, the phenomenon that not will produce high temperature powder recharge wind turbine and wind turbine caused to burn.
Air channel structure compression strength is high in circular arc type kiln simultaneously, and structural stability is good, is conducive to make to pour in down a chimney on functional characteristic
The powder entered in air duct is smoothly back in kiln.
2) air outlet in air duct is concordant with kiln liner castable refractory protective layer in kiln of the invention, meanwhile, building height by laying bricks or stones
When warm rotary kiln, adopted when building low temperature rotary kiln by laying bricks or stones as air duct built-in fitting in kiln using atactic copolymerized polypropene or polyvinyl chloride
Use aluminium, steel, metal alloy etc. as air duct built-in fitting in kiln, it is possible to prevente effectively from because of the high temperature of metal tube and refractory material
The coefficient of expansion it is different and caused by stripping in castable refractory protective layer and kiln between air channel pipeline fall off.
Castable refractory is not easily to fall off around air hose, therefore can guarantee its service life and other position refractory castings of kiln liner
Expect that protective layer synchronizes.Can guarantee technique initialization two, tertiary air air feed point and volume of air supply, it is ensured that the normal supply into kiln for a long time
Two, tertiary air is conducive to that material fugitive constituent is made full use of to burn, keeps longer burning zone and its high temperature, improve calcined coke
Product quality.
3) it can avoid significantly cooling down due to the kiln body that air hose repair is brought, be conducive to protect entire kiln liner refractory casting
Expect the thermal stability of protective layer, extend the service life of kiln liner castable refractory protective layer, effectively reduces carbon calcination revolution
Kiln production cost.
4) rotary kiln air inlet position is located in kiln more than repose angle of material, and powder can be effectively prevent to pour in down a chimney damage wind turbine.
5) air channel structure, air outlet structure and kiln outer air duct structure in the kiln that the present invention uses, it is simple in structure, it is easy to real
It applies, cost efficiency is economical and practical.
Description of the drawings
Fig. 1 is rotary kiln air inlet connectivity structure part schematic side view of the present invention.
Fig. 2 is that rotary kiln air inlet of the present invention switchs to multichannel air channel structure schematic diagram after the connection of connectivity structure part.
Fig. 3 is the schematic cross-section of air feed position in rotary kiln of the present invention.
Fig. 4 is the structural schematic diagram when air outlet in air duct in kiln is in solid accumulation zone position.
Fig. 5 is the structural schematic diagram when air outlet in air duct in kiln turns to a high position.
In figure, 1- metal kiln bodies；2- kiln liner castable refractory protective layers；3- threeways；Air duct in 4- kilns；5- air outlets；
6- kiln outer air ducts；7- wind turbines；8- anchoring pieces；9- air inlets.
Specific implementation mode
The present invention is described in detail below in conjunction with the accompanying drawings, it should be noted that the present invention implementation be not limited to it is following
Embodiment.
As Figure 1-Figure 5, air duct in the horizontal air duct structure of a kind of carbon-calcining rotary kiln, including rotary kiln kiln body, kiln
4, kiln outer air duct 6, kiln outer air duct 6 are connected to by the air inlet 9 in rotary kiln kiln body with air duct in kiln 4；Air duct 4 is set in the kiln
It sets in kiln liner castable refractory protective layer 2, is passed through in rotary kiln body along rotary kiln kiln body is circumferentially in the arc-shaped, wind in kiln
The air outlet 5 in road 4 wall longitudinal direction lineal layout along rotary kiln body.
Rotary kiln kiln body is made of external metal kiln body 1 and internal kiln liner castable refractory protective layer 2.
Connectivity structure part is equipped at the air inlet 9, every group of kiln outer air duct 6 switchs to list after being connected by connectivity structure part
Air duct 4 in the kiln of channel or multichannel.
The position of the air inlet 9 is arranged in kiln material and goes to sleep angle or more.
Described its material of connectivity structure part is aluminium, steel, metal alloy, atactic copolymerized polypropene (ppr) or polychlorostyrene
Ethylene (pvc).
Air duct 4 is aluminium, steel, metal alloy, atactic copolymerized polypropene (ppr) or polyvinyl chloride in the kiln
(pvc) segmentation button or integral passage.
The cross sectional shape in air duct 4 is rectangular, diamond shape, circle or irregular shape in kiln, and the sectional area in air duct is needed for
Air quantity is 100-1000cm2。
Entire Secondary Air, the horizontal air hose of tertiary air are poured again after direct forming or prefabricated forming when pouring into a mould or building kiln lining by laying bricks or stones
It notes or builds by laying bricks or stones in kiln lining.
The kiln outer air duct 6 connects one or more 7 air feed of wind turbine.
The air outlet 5 in air duct 4 and 2 flush of castable refractory protective layer in rotary kiln kiln body kiln in the kiln.
Air duct 4 is horizontal type structure in the kiln outer air duct 6 and kiln of the present invention, and refractory casting is arranged in kiln in air duct 4 in kiln
Expect in protective layer 2, every group of kiln outer air duct 6 air duct 4 in the kiln at air inlet 9 by connectivity structure part connecting multi-channel makes two
Secondary, tertiary air can be uniformly distributed in the rotary kiln of the air-supply region, and 3 structure of threeway is used in embodiment, will be outside one group of kiln
Air duct 6 switchs to air duct 4 in two channel kilns.
2 thickness of kiln liner castable refractory protective layer is 200-400mm.On 1 inner wall of metal kiln body full weld have Y types,
X-type or the good abnormally-structured heating resisting metal anchoring piece 8 of structural stability, good abnormally-structured resistance to of Y types, X-type or structural stability
The length of thermometal anchoring piece 8 is 30-100mm, and quantity is 36-180.
The quantity of rotary kiln upper air inlet 9 is 2-10.Kiln outer air duct 6 carries one or more 7 air feed of wind turbine.
Embodiment 1：
A kind of horizontal air duct structure of carbon-calcining rotary kiln, including 4 structure of air duct, 5 structure of air outlet and kiln exogenous wind in kiln
6 structure of road, cast kiln liner castable refractory protective layer 2, kiln liner refractory casting in carbon-calcining rotary kiln metal kiln body 1
Material protective layer 2 is located at the inside of metal kiln body 1, and anchoring piece 8 is welded in metal kiln body 1.Metal kiln body 1 is equipped with across kiln body
Air inlet 9,1 inner wall of metal kiln body be equipped with threeway 3, so that air duct 4 in kiln is connected with kiln outer air duct 6, wind turbine 7, every group of air inlet 9
Switch to air duct 4 in the kiln in two channels after the connection of threeway 3,4 structure of air duct is circular arc type structure wherein in kiln, air outlet 5 in kiln
With 2 flush of kiln liner castable refractory protective layer, air outlet 5 is 8 along kiln body longitudinal direction lineal layout, quantity, wind in kiln
It is cast in again in kiln liner castable refractory protective layer 2 after the splicing forming of the air hose of road 4 and kiln outer air duct 6, kiln outer air duct 6 is surround
Outside metal kiln body 1, every group of kiln outer air duct 6 carries 7 air feed of a Fans, and air duct 4 and 5 cross sectional shape of air outlet are round in kiln
Shape, area of section 400cm2。
The present invention through live mass production practical proof, can stablize, efficiently solve in the prior art rotary kiln because in kiln
Air channel structure, air outlet structure and kiln outer air duct structure cause the problems such as cycle of operation is short, powder enters air duct damage wind turbine.
Air channel structure, air outlet structure and kiln outer air duct structure can also be used in other purposes in kiln in aforementioned present invention
Rotary kiln.
Claims (7)
1. a kind of horizontal air duct structure of carbon-calcining rotary kiln, including air duct, kiln outer air duct in rotary kiln kiln body, kiln, kiln exogenous wind
Road is connected to by the air inlet in rotary kiln kiln body with air duct in kiln；It is characterized in that, air duct is arranged in kiln liner in the kiln
In castable refractory protective layer, it is passed through in rotary kiln body along rotary kiln kiln body is circumferentially in the arc-shaped, the air outlet in air duct in kiln
The wall longitudinal direction lineal layout along rotary kiln body.
2. the horizontal air duct structure of a kind of carbon-calcining rotary kiln according to claim 1, which is characterized in that in the air inlet
Connectivity structure part is equipped at mouthful, every group of kiln outer air duct switchs to wind in the kiln of single channel or multichannel after being connected by connectivity structure part
Road.
3. the horizontal air duct structure of a kind of carbon-calcining rotary kiln according to claim 1 or 2, which is characterized in that it is described into
The position in air port is arranged in kiln more than repose angle of material.
4. the horizontal air duct structure of a kind of carbon-calcining rotary kiln according to claim 2, which is characterized in that the connection
Its material of structural member is aluminium, steel, metal alloy, atactic copolymerized polypropene or polyvinyl chloride.
5. the horizontal air duct structure of a kind of carbon-calcining rotary kiln according to claim 1 or 2, which is characterized in that described
Air duct is the segmentation button or integral passage of aluminium, steel, metal alloy, atactic copolymerized polypropene or polyvinyl chloride in kiln.
6. the horizontal air duct structure of a kind of carbon-calcining rotary kiln according to claim 1, which is characterized in that the kiln exogenous wind
Road connects one or more wind turbine air feed.
7. the horizontal air duct structure of a kind of carbon-calcining rotary kiln according to claim 1, which is characterized in that wind in the kiln
The air outlet in road is concordant with castable refractory protective layer in rotary kiln kiln body kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037917.7A CN108302932A (en) | 2018-01-16 | 2018-01-16 | A kind of horizontal air duct structure of carbon-calcining rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037917.7A CN108302932A (en) | 2018-01-16 | 2018-01-16 | A kind of horizontal air duct structure of carbon-calcining rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108302932A true CN108302932A (en) | 2018-07-20 |
Family
ID=62869118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810037917.7A Pending CN108302932A (en) | 2018-01-16 | 2018-01-16 | A kind of horizontal air duct structure of carbon-calcining rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108302932A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924446Y (en) * | 2006-07-19 | 2007-07-18 | 程志强 | Buried rotary kiln radical air supply device |
| CN101135539A (en) * | 2006-08-30 | 2008-03-05 | 贵阳铝镁设计研究院 | Rotary kiln baiting structure |
| JP2008249212A (en) * | 2007-03-29 | 2008-10-16 | Ihi Corp | Waste thermal decomposition gasification method and device |
| CN201314781Y (en) * | 2008-12-03 | 2009-09-23 | 沈阳铝镁设计研究院 | Lining of rotary kiln and secondary air port structure thereof |
| CN102778124A (en) * | 2012-07-10 | 2012-11-14 | 沈阳博联特熔融还原科技有限公司 | Secondary radial air-supplying device for direct reduction equipment of rotary kiln |
| CN203758230U (en) * | 2013-11-05 | 2014-08-06 | 湖南创元新材料有限公司 | Blast nozzle for rotary kiln |
| CN104613752A (en) * | 2015-01-05 | 2015-05-13 | 中钢集团鞍山热能研究院有限公司 | Secondary air oxygen-enrichment pulse combustion gas spraying device and method of rotary kiln |
| CN207991236U (en) * | 2018-01-16 | 2018-10-19 | 中钢集团鞍山热能研究院有限公司 | A kind of horizontal air duct structure of carbon-calcining rotary kiln |
-
2018
- 2018-01-16 CN CN201810037917.7A patent/CN108302932A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924446Y (en) * | 2006-07-19 | 2007-07-18 | 程志强 | Buried rotary kiln radical air supply device |
| CN101135539A (en) * | 2006-08-30 | 2008-03-05 | 贵阳铝镁设计研究院 | Rotary kiln baiting structure |
| JP2008249212A (en) * | 2007-03-29 | 2008-10-16 | Ihi Corp | Waste thermal decomposition gasification method and device |
| CN201314781Y (en) * | 2008-12-03 | 2009-09-23 | 沈阳铝镁设计研究院 | Lining of rotary kiln and secondary air port structure thereof |
| CN102778124A (en) * | 2012-07-10 | 2012-11-14 | 沈阳博联特熔融还原科技有限公司 | Secondary radial air-supplying device for direct reduction equipment of rotary kiln |
| CN203758230U (en) * | 2013-11-05 | 2014-08-06 | 湖南创元新材料有限公司 | Blast nozzle for rotary kiln |
| CN104613752A (en) * | 2015-01-05 | 2015-05-13 | 中钢集团鞍山热能研究院有限公司 | Secondary air oxygen-enrichment pulse combustion gas spraying device and method of rotary kiln |
| CN207991236U (en) * | 2018-01-16 | 2018-10-19 | 中钢集团鞍山热能研究院有限公司 | A kind of horizontal air duct structure of carbon-calcining rotary kiln |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206269605U (en) | A kind of shaft cooler | |
| CN102424872A (en) | Method for patching damaged blast furnace hot air pipeline inner liner in hot state | |
| CN207991236U (en) | A kind of horizontal air duct structure of carbon-calcining rotary kiln | |
| CN201314781Y (en) | Lining of rotary kiln and secondary air port structure thereof | |
| CN109735675A (en) | A kind of hot blast main duct of blast furnace refractory lining Quick overhaul method | |
| CN1245341C (en) | Process for producing mineral wool granular cotton and its hot air system | |
| CN101608864B (en) | Carbon-calcining rotary kiln lining and second tuyere structure thereof | |
| CN108302932A (en) | A kind of horizontal air duct structure of carbon-calcining rotary kiln | |
| CN201942720U (en) | Roller hearth tunnel furnace applied for continuous casting-rolling production line of sheet billet | |
| CN201000274Y (en) | High efficiency energy conservation tunnel kiln | |
| CN111750663A (en) | Large horizontal tubular kiln | |
| CN201722293U (en) | Tertiary air valve plate | |
| CN203653599U (en) | Rotary kiln for iron smelting | |
| CN201129922Y (en) | Carbon element calcining rotary kiln | |
| CN202209888U (en) | Central heat exchanger used for bright and annealing bell furnace | |
| CN204824624U (en) | Energy -concerving and environment -protective type lime shaft kiln | |
| CN203687585U (en) | Vertical continuous aluminum smelting furnace | |
| CN208366055U (en) | A kind of horizontal rotary furnace fire door protective device | |
| CN103757168B (en) | A kind of ironmaking rotary kiln and iron-smelting process thereof | |
| CN2676102Y (en) | highly oil/gas burning hot blast stove | |
| CN207365394U (en) | A kind of directly mixing type oil gas associative form hot-blast stove | |
| CN205561522U (en) | Cement rotary kiln kiln tail preheater gooseneck prevent blockking up jetting device | |
| CN206724722U (en) | Rotary hearth furnace fume afterheat gradient utilization system | |
| CN105861771B (en) | One kind ironmaking hot-blast stove junctions furnace lining structure | |
| CN211345829U (en) | Industrial gas flue gas drying hot blast stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |