CN2588301Y - Rotary kiln - Google Patents
Rotary kiln Download PDFInfo
- Publication number
- CN2588301Y CN2588301Y CN 02291178 CN02291178U CN2588301Y CN 2588301 Y CN2588301 Y CN 2588301Y CN 02291178 CN02291178 CN 02291178 CN 02291178 U CN02291178 U CN 02291178U CN 2588301 Y CN2588301 Y CN 2588301Y
- Authority
- CN
- China
- Prior art keywords
- kiln
- rotary kiln
- cylindrical shell
- liner
- barrel body
- 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.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 claims abstract description 6
- 238000007373 indentation Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000571 coke Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000002006 petroleum coke Substances 0.000 description 19
- 239000000463 material Substances 0.000 description 13
- 238000001354 calcination Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000002008 calcined petroleum coke Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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- Manufacture And Refinement Of Metals (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The utility model relates to a rotary kiln, which comprises a barrel body, a big gear at the outer side of the middle part of the barrel body, a drive gear engaged with the big gear, a wheel rim on the barrel body, a supporting roller at the lower part of the wheel rim, a secondary air nozzle, a three-time air nozzle, a fuel nozzle, a kiln head, a discharge opening, a kiln tail, a hook nail in the barrel body, a first layer of light inner lining in the barrel body, and a power device. The utility model is characterized in that a plurality of second layers of inner linings which are lengthways arranged are arranged on the first layer of light inner lining; the integral section of the second layers of inner linings is jagged. The rotary kiln can raise the yield and the quality of coke after calcined; the emission of the rotary kiln can reach the standard of environmental protection. The service life of the rotary kiln can be prolonged.
Description
Technical field: the present invention relates to a kind of rotary kiln, particularly a kind of electrolgtic aluminium carbon rotary kiln.
Background technology: petroleum coke is one of byproduct in the petroleum refining process, and it is the primary raw material of Aluminium Electrolysis with prebaked anode.Petroleum coke contains the different volatile matter of degree, particularly the contained volatile matter of the petroleum coke of delayed coking is up to 12～16%, if use without the burnt son of calcining or degree of calcination deficiency and make anode, then the living charcoal piece after the moulding will produce bigger volume contraction in next step roasting process, the complete structure that this can destroy product causes crackle, broken end, waste product such as cracked.So petroleum coke all will be through the calcining of rotary kiln before sending to batching.Calcining heat generally will reach 1300 ℃.One of purpose of calcining: get rid of the volatile matter in the petroleum coke, improve the carbon content and the physical and chemical performance of petroleum coke; Two of purpose: the density and the intensity that improve petroleum coke; Three of purpose: the electric conductivity that improves petroleum coke; Four of purpose: remove the moisture content in the petroleum coke.Aluminium is plain changeable according to the production scale design with the rotary kiln body with charcoal, it is the reducing kiln, with other industrial rotary kiln structure proximate, its general formation comprises the interior hook nail of wheel rim, the carrying roller of wheel rim bottom, secondary tuyere, tertiary air mouth, fuel nozzle ports, kiln hood, discharge gate, kiln tail, the cylindrical shell on cylindrical shell, the gear wheel in the outside, cylindrical shell middle part and the travelling gear that is engaged with, the cylindrical shell, ground floor light inner lining, second layer liner and the power set in the cylindrical shell.Kiln cylinder body has certain gradient, and kiln hood is more lower slightly than kiln tail, and petroleum coke sprays into coal gas from kiln tail continuous charging from kiln hood, and the high-temperature gas that gas-fired produces is the thermal source in the kiln.Petroleum coke has only 30～60 minutes residence time in rotary kiln, and the petroleum coke that calcining is good falls into cooling kiln from the kiln hood tremie pipe.According to the change procedure of material, be divided into three work zones in the cylindrical shell: near the preheating and drying band of kiln tail, middle high-temperature calcination band (1200～1350 ℃), the most close kiln hood forges the back salband.Rotary kiln is by countercurrent action work, and promptly kiln gas is opposite with the material trend.Petroleum coke and high-temperature flue gas from kiln hood to kiln tail process of flowing, high-temperature flue gas reaches the purpose of calcined petroleum coke with the mode of radiation, convection current and the conduction material with heat transferred kiln wall and surface.Inner liner of rotary kiln at high temperature rotates with kiln cylinder body, is in vibrating state for a long time, also bears the wearing and tearing and the effect of impact of furnace charge simultaneously, so liner requires to have the high intensity and the low porosity.The effect of inner liner of rotary kiln is the protection cylindrical shell, reduces radiation loss.The high temperate zone liner of rotary kiln needs often to change, and its stage of replacement is the service cycle of kiln.
Inner liner of rotary kiln is cylindrical (regular polygon) pour mass, and its shortcoming is: do not fry moving structure in (1) kiln, the liner bight band material of kiln is unfavorable, calcine insufficiently, and back Jiao's quality is forged in influence; (2) can't increase inventory, production capacity is on the low side; (3) exhaust gas volumn is big in the kiln, after the calcining of calcining compartment, does not still reach clean-up effect, and forges burnt can't meet the quality requirement in back; (4) service life of kiln liner is short.
The content of invention: the objective of the invention is to provide a kind of can the raising to forge burnt output in back and quality, gas cleaning reaches environmental emission standard, and the rotary kiln that can increase economic efficiency.
Technical scheme of the present invention is this rotary kiln, comprise cylindrical shell 1, the gear wheel 5 in the outside, cylindrical shell 1 middle part and the travelling gear 6 that is engaged with, wheel rim 4 on the cylindrical shell 1, the carrying roller 3 of wheel rim 4 bottoms, secondary tuyere 12, tertiary air mouth 13, fuel nozzle ports 11, kiln hood 7, discharge gate 8, kiln tail 10, hook nail 15 in the cylindrical shell 1, ground floor light inner lining 14 in the cylindrical shell 1, and power set, its characteristics are to have some the vertically second layer liners 16 of arrangement on ground floor light inner lining 14, the global sections indentation of second layer liner 16 forms a faulting of slab ends 18 in the forward position of sawtooth.
Another characteristics of the present invention are in a side lower end of each bar liner of described second layer liner 16 faulting of slab ends 17 that is meshed with another liner to be arranged all.
Advantage of the present invention and effect are: 1, because inner liner of rotary kiln is the zigzag pour mass, bar and bar have the 20mm faulting of slab ends at inner surface, this kind structural design is equivalent to rotary kiln has increased a moving device of stir-fry on the basis of original structure, the petroleum coke that can fully drive in the kiln stirs, petroleum coke is evenly distributed on the cylindrical shell cross section as far as possible, improve contacting of petroleum coke and high-temperature gas, strengthen heat, matter exchange.The calcining material does not have stagnate material or batch turning, and petroleum coke is calcined fully, and calcining evenly.Promptly petroleum coke quality and the output after the calcining obtains very big improving, and gas cleaning reaches environmental emission standard.2, because watering material feeding (second layer), the liner heavy carries out the faulting of slab ends cast with light material (ground floor) contact position, faulting of slab ends is of a size of 20mm, so can prevent the sky of rinsing of light material, can stop fervid carbon black directly to contact light material and destroy its structure, thereby prolong service life of rotary kiln.
Description of drawings: Fig. 1 is the rotary structure schematic diagram
Fig. 2 is the rotary kiln cross section view
The specific embodiment: as Fig. 1, cylindrical shell 1 rotates under the drive of travelling gear 6, and fuel sprays in the cylindrical shell 1 from fuel nozzle ports 11 and burns, and petroleum coke enters in the kiln from kiln tail 10 and calcines, and the calcining back drains into the cooling cellar for storing things 9 from the discharge gate 8 of kiln hood 7.As Fig. 2, the global sections indentation of liner 16 forms a faulting of slab ends 18 in the forward position of sawtooth, makes material be stirred fully and to calcine.Faulting of slab ends 17 can prevent the sky of rinsing of light material (ground floor liner 14), can stop fervid carbon black directly to contact light material and destroy its structure, thereby prolong service life of rotary kiln.
Show through the reality use, rotary kiln of the present invention can be with existing production capacity from 5.9t/h, bring up to 6.3t/h, 3 rotary kiln years of our company's Qinghai Branch can be improved output 10368t (0.4 * 24 * 30 * 12 * 3=10368), year is created nearly more than 300 ten thousand yuan of economic benefit, the rotary kiln life-span is doubled, and it is 650,000 yuan that separate unit is saved the general overhaul expense, and it is 1,950,000 yuan that year 3 rotary kilns are saved the general overhaul expense.
Claims (2)
1. rotary kiln, comprise cylindrical shell (1), the gear wheel (5) in the outside, cylindrical shell (1) middle part and the travelling gear (6) that is engaged with, wheel rim (4) on the cylindrical shell (1), the carrying roller (3) of wheel rim (4) bottom, secondary tuyere (12), tertiary air mouth (13), fuel nozzle ports (11), kiln hood (7), discharge gate (8), kiln tail (10), hook nail (15) in the cylindrical shell (1), ground floor light inner lining (14) in the cylindrical shell (1), and power set, it is characterized in that on ground floor light inner lining (14), having some the vertically second layer liners (16) of arrangement, the global sections indentation of second layer liner (16).
2. a kind of rotary kiln as claimed in claim 1 is characterized in that in a side lower end of each bar liner of described second layer liner (16) faulting of slab ends (17) that is meshed with another liner being arranged all.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02291178 CN2588301Y (en) | 2002-12-17 | 2002-12-17 | Rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02291178 CN2588301Y (en) | 2002-12-17 | 2002-12-17 | Rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2588301Y true CN2588301Y (en) | 2003-11-26 |
Family
ID=33750099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02291178 Expired - Fee Related CN2588301Y (en) | 2002-12-17 | 2002-12-17 | Rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2588301Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334234B (en) * | 2007-06-28 | 2011-08-31 | 中信重工机械股份有限公司 | A Design Method for Extra Large Cement Rotary Kiln |
| CN102175078A (en) * | 2011-02-25 | 2011-09-07 | 丰城市环球资源再生科技发展有限公司 | Pop can depainting process device |
| CN103105055A (en) * | 2011-11-09 | 2013-05-15 | 宏隆铁工厂 | Rotary type calcining structure for producing light aggregate |
| CN104120279A (en) * | 2014-08-13 | 2014-10-29 | 湖南建勋环保资源科技发展有限公司 | Device for producing zinc oxide in rotary furnace |
| CN111678335A (en) * | 2020-06-09 | 2020-09-18 | 陈怀圣 | Flexible protective rotary kiln for preparing ceramsite |
-
2002
- 2002-12-17 CN CN 02291178 patent/CN2588301Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334234B (en) * | 2007-06-28 | 2011-08-31 | 中信重工机械股份有限公司 | A Design Method for Extra Large Cement Rotary Kiln |
| CN102175078A (en) * | 2011-02-25 | 2011-09-07 | 丰城市环球资源再生科技发展有限公司 | Pop can depainting process device |
| CN103105055A (en) * | 2011-11-09 | 2013-05-15 | 宏隆铁工厂 | Rotary type calcining structure for producing light aggregate |
| CN104120279A (en) * | 2014-08-13 | 2014-10-29 | 湖南建勋环保资源科技发展有限公司 | Device for producing zinc oxide in rotary furnace |
| CN111678335A (en) * | 2020-06-09 | 2020-09-18 | 陈怀圣 | Flexible protective rotary kiln for preparing ceramsite |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031126 Termination date: 20111217 |