CN104496208A - Combustion beam provided with air cooling device and used for lime kiln - Google Patents
Combustion beam provided with air cooling device and used for lime kiln Download PDFInfo
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- CN104496208A CN104496208A CN201510021873.5A CN201510021873A CN104496208A CN 104496208 A CN104496208 A CN 104496208A CN 201510021873 A CN201510021873 A CN 201510021873A CN 104496208 A CN104496208 A CN 104496208A
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Abstract
The invention provides a combustion beam provided with an air cooling device and used for a lime kiln. The combustion beam comprises a beam body, and a fuel pipeline and a burner which are located in the beam body, wherein an air channel is limited by the beam body; the burner comprises a fuel burner arranged on the fuel pipeline, and a combustion-supporting air pipeline which is arranged on the position, corresponding to a fuel nozzle, of the beam body and is communicated with the air pipeline; a cooling air pipeline is formed in the upper side or the periphery of the beam body and is communicated with the air channel; sprayed air can be used for effectively cooling a top wall of the beam body and preventing high-temperature flame from being in direct contact with the part, particularly the crossed part of a bottom side plate of the top wall of the beam body, so that the ablation effect is reduced; furthermore, the brushing effect on the top wall of the combustion beam by particles clamped in the airflow sprayed out from the burner can be weakened so that the service life of the combustion beam is prolonged; the cooling air pipeline is easy to machine and the total structure size of the combustion beam is not changed; a mounting hole in the combustion beam of an existing kiln body does not need to be adjusted and the combustion beam can be directly mounted on the existing kiln body.
Description
Technical field
The invention belongs to combustion equipment technical field, relate to a kind of burning beam of limestone kiln, be specifically related to a kind of burning beam with air cooling apparatus.
Background technology
Beam-type limekiln has that cost is low, energy consumption is low, throughput is strong, working elastic is large and fuel adapts to the series of advantages such as face width, is widely used in the lime production of the purposes such as metallurgy, chemical industry.When adopting beam-type limekiln to carry out lime production, the raw materials such as Wingdale are from kiln roof fall, and the pre-add hot-zone successively in kiln body, calcining zone, cooling zone, finally from the discharge port output bottom kiln.The decomposition temperature of Wingdale is at about 900 DEG C, and calcining temperature, between 1000 DEG C ~ 1200 DEG C, mainly completes calcining in the calcining zone that temperature is higher.In order to reach calcining temperature, burning beam is equipped with in the calcining zone of beam-type limekiln, burning beam mainly comprises air passageways, fuel channel and cooling medium pass, the burner of air jet and fuel oil atomizer composition burning beam, burner is to burner oil and combustion air in kiln body, there is combustion reactions and form thermal-flame in the two, and discharges the calcining of amount of heat for Wingdale.Because burning beam is arranged on the higher calcination area of temperature, and calcination area temperature is far above the allowable temperature of burning beam material, therefore, the wall of burning beam adopts the structure of hollow on the whole, and the heat-eliminating medium passing into flowing in the cavity of hollow cools the beam body wall face be in hot environment.
In order to avoid the situation of burning or raw burn appears in lime, require that the heat distribution of calcining zone is even as much as possible, therefore, beam-type limekiln extensively adopts and fill some burning beams on the sustained height face of kiln body calcining zone, the different heights face of calcining zone fills the topology layout of some row's burning beams, and several burners are offered on two side walls (being arranged on the burning beam in the body of limestone kiln) or single side wall (being embedded in the burning beam in the body of wall of limestone kiln) of burning beam, the injection direction of flame is perpendicular to the falling direction of raw limestone, be called that mode is burnt in side, make flame to reach the large effect of port coverage, realize the object of calcining zone uniform heat distribution.
Raw limestone is mostly the nonstandard bulk of shape, and from the process that kiln top falls, if do not adopt special measure, raw limestone can wash away the side wall of burning beam, shortens the work-ing life of burning beam; In addition, raw limestone also easily enters in the burner that burning beam is opened on side wall, and the time has been grown and will result in blockage to burner, has had a strong impact on reliable, the safe operation in limestone kiln.In order to avoid above-mentioned problem, for the burning beam adopting side to burn mode, be provided with the shutter that width is greater than burning beam width on the top of beam, from the cross section of burning beam, burning beam is "T"-shaped structure; Or the upper width of burning beam is greater than lower width, from the cross section of burning beam, burning beam is inverted trapezoidal structure wide at the top and narrow at the bottom; Adopt these two kinds of frame modes can reduce raw limestone washing away and avoiding raw limestone to enter in burner burning beam side wall.
In combustion, fuel and combustion air spray to enter in kiln body with higher speed to burn, and the byproduct of the chemical industries such as fuel gas many employings calcium carbide furnace gas, coke-oven gas, containing a certain amount of dust granules; And for solid fuel, itself be exactly granular fuel.For the burning beam of "T"-shaped structure or inverted trapezoidal structure wide at the top and narrow at the bottom, the burner of side wall is near the burning beam top with the effect of blocking, the particle be mingled with in the air-flow of burner ejection can wash away this part and denude, and thermal-flame can be formed near burner after the ejection of fuel, air, in addition, raw limestone also can wash away this part in dropping process; Through washing away for a long time and denuding, under thermal-flame effect, this part is easy to ablated damage, and the heat-eliminating medium in hollow cavity is leaked, and causes break-down maintenance or changes burning beam.
Existing technology Patent application number is in the patent documentation of 201020046147.1, at the whole outside surface removing burner place of the burning beam of inverted trapezoidal structure wide at the top and narrow at the bottom, all arranges one deck heat resistant and wear resistant thermofin; Patent publication No. is in the patent documentation of CN201330225Y, and the position that flame and burner ejecta touch around the burner mouth of the burning beam of "T"-shaped structure is provided with wearing layer.Above-mentioned two patents have following problems: be difficult to reliably heat resistant and wear resistant thermofin or wearing layer are fixedly mounted on burning beam beam body; For the limestone kiln of having gone into operation, if change this burning beam, need to adjust the size of the burning beam open holes on existing kiln body; The processing of heat resistant and wear resistant thermofin or wearing layer is more difficult; The material of heat resistant and wear resistant thermofin or wearing layer, processing, installation cost are higher; After there is heat resistant and wear resistant thermofin or wearing layer partial destruction, the risk that whole burning beam all needs repairing or changes.
Summary of the invention
For problems of the prior art, the invention provides a kind of burning girder for limekiln with air cooling apparatus, the particle that is mingled with can be weakened in the air-flow of burner ejection to the souring of burning beam crown wall, and reduce the ablation effect of thermal-flame to burning beam crown wall, thus improve the work-ing life of burning beam.
The technical solution adopted in the present invention is as follows:
With a burning girder for limekiln for air cooling apparatus, comprise beam body and be positioned at fuel channel, the burner of beam body inside, its central sill body defines air passageways; Burner comprises the fuel oil atomizer that fuel channel is arranged and the comburent air duct be connected with air passageways be opened on the corresponding fuel oil atomizer position of beam body, near comburent air duct on beam body, offer the cooling air pipeline be connected with air passageways.
Beam body is made up of wall at the bottom of beam body crown wall, Liang Ticeqiang, beam body, and what at the bottom of beam body crown wall, Liang Ticeqiang, beam body, wall can be all or part of is set to hollow structure, is limited with heat-eliminating medium circulation cavity inside body of wall.
Burner can be offered at the one-sided of Liang Ticeqiang, also can offer at bilateral.
Cooling air install pipeline is above comburent air duct or surrounding.
Cooling air pipeline can be as a whole, also can discrete distribution.
The cross section of beam body can be "T"-shaped, rectangle or trapezoidal.
Beam body crown wall wall can be welded by polylith metal sheet, also can form by one piece of metal sheet is moulded.
The present invention compared with prior art, has the following advantages and high-lighting effect:
1, between burner and beam body crown wall, arrange cooling air pipeline, the air ejected can suppress the air-flow with particle of burner ejection effectively, reduces the souring to beam body crown wall, thus improves the work-ing life of burning beam;
2, cooling air pipeline is set between burner and beam body crown wall, the air ejected can effectively cool the base plate of back and side plate, and prevent thermal-flame from directly touching this part, especially base plate and side plate junction, reduce ablation effect, thus improve the work-ing life of burning beam;
3, between burner and beam body crown wall, arrange cooling air pipeline, structure is simple, and easily process, cost is lower;
4, cooling air pipeline is set between burner and beam body crown wall, the overall structure size of burning beam can not be changed, do not need to adjust the open holes of burning beam on existing kiln body, can directly install on existing limestone kiln.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of a kind of burning girder for limekiln with air cooling apparatus provided by the invention.
Fig. 2 is the burning beam burner near zone partial enlarged drawing of the present invention with monoblock type cooling air pipeline.
Fig. 3 is the burning beam burner near zone partial enlarged drawing of the present invention with discrete type cooling air pipeline.
Fig. 4 is the fundamental diagram of a kind of burning girder for limekiln with air cooling apparatus provided by the invention.
In figure, nomenclature is as follows: 1-beam body; 2-beam body crown wall; 3-Liang Ticeqiang; Wall at the bottom of 4-beam body; 5-heat-eliminating medium circulation cavity; 6-beam body crown wall base plate; 7-beam body crown wall upper plate; 8-beam body crown wall side plate; 9-beam side inner wall; 10-beam side wall outer wall; Inner wall at the bottom of 11-beam body; Wall outer wall at the bottom of 12-beam body; 13-fuel channel; 14-air passageways; 15-comburent air duct; 16-fuel oil atomizer; 17-burner; 18-cooling air pipeline; 19-back bottom side plate junction; 20-cooling air stream; 21-flame.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention, structure and embodiment are described further.
Fig. 1 is the cross sectional representation of a kind of burning girder for limekiln with air cooling apparatus provided by the invention, and a kind of burning girder for limekiln with air cooling apparatus comprises beam body (1) and is positioned at beam body (1) inner fuel channel (13), burner (17) as we can see from the figure; Beam body (1) is made up of wall (4) at the bottom of beam body crown wall (2), Liang Ticeqiang (3), beam body, and wall (4) at the bottom of beam body crown wall (2), Liang Ticeqiang (3), beam body limits air passageways (14); At the bottom of beam body crown wall (2), Liang Ticeqiang (3), beam body, wall (4) is hollow structure, inside establishes heat-eliminating medium circulation cavity (5); Beam body crown wall base plate (6), beam body crown wall upper plate (7), beam body crown wall side plate (8) limit heat-eliminating medium circulation cavity (5) of beam body crown wall (2), beam body crown wall base plate (6), beam body crown wall side plate (8) can be integrally welded, also can be moulded by one piece of metal sheet, as directly simmered integral or being machined to one; Beam side inner wall (9), beam side wall outer wall (10) limit heat-eliminating medium circulation cavity (5) of Liang Ticeqiang (3); Wall outer wall (12) at the bottom of inner wall (11), beam body at the bottom of beam body limits heat-eliminating medium circulation cavity (5) of wall (4) at the bottom of beam body; Circulate in cavity in heat-eliminating medium wall (4) at the bottom of beam body crown wall (2), Liang Ticeqiang (3), beam body, for cooling the beam body (1) be in hot environment; Beam body (1) is built with fuel channel (13), and fuel channel (13) is provided with fuel oil atomizer (16); Liang Ticeqiang (3) is provided with comburent air duct (15), comburent air duct (15) is connected with beam side inner wall (9), beam side wall outer wall (10), is communicated with air passageways (14); Fuel oil atomizer (16) and comburent air duct (16) form burner (17); Burner (17) in one-sided the offering of Liang Ticeqiang (3), also can be offered at bilateral; Liang Ticeqiang (3) between beam body crown wall base plate (6) and burner (17) is provided with cooling air pipeline (18), or cooling air pipeline (18) is opened in the surrounding of burner (17), cooling air pipeline (18) is connected with beam side inner wall (9), beam side wall outer wall (10), is communicated with air passageways (14); Cooling air pipeline (18) can be as a whole, also can discrete distribution, Fig. 2 is monoblock type cooling air pipeline (18) embodiment on T-shaped burning beam, the common corresponding all-in-one-piece cooling air pipeline (18) of several burners (17), equally can by monoblock type cooling air pipe applications on rectangle or trapezoidal burning beam; Fig. 3 is discrete type cooling air pipeline (18) embodiment on T-shaped burning beam, can monoblock type cooling air pipeline (18) be applied on rectangle or trapezoidal burning beam equally, the cooling air pipeline (18) of discrete distribution can with burner (17) one_to_one corresponding, also can a corresponding multiple cooling air pipeline (18) of burner (17); The cross section of beam body (1) can be "T"-shaped, rectangle or trapezoidal.
Principle of work of the present invention is as follows:
Air enters and is divided into two portions in the air passageways (14) that at the bottom of back base plate (6), beam side inner wall (9), beam body, inner wall (11) limits and enters in the body of limestone kiln, a part enters as the comburent air duct (15) helping combustion air to pass through to offer on Liang Ticeqiang (3), and a part is entered by the cooling air pipeline (18) that the Liang Ticeqiang (3) between beam body crown wall base plate (6) and burner (17) offers as tempering air; Beam body (1) is built with fuel channel (13), fuel channel (13) is provided with fuel oil atomizer (16), fuel is sprayed to comburent air duct (15) by fuel oil atomizer (16), fuel oil atomizer (16) and comburent air duct (15) form burner (17) jointly, the combustion air that burner (17) sprays and the reaction of fuel generation combustion chemistry, form the flame of high temperature, for calcining the raw limestone fallen from kiln top; The high-temperature calcination district in the body of limestone kiln is all in due to beam body (1) major part; at the bottom of beam body crown wall (2), Liang Ticeqiang (3), beam body, wall (4) is hollow structure; inside establish heat-eliminating medium circulation cavity (5); heat-eliminating medium is circulation wherein; take away the heat of beam body (1), cooling protection is carried out to beam body (1).
Fig. 4 is the fundamental diagram of a kind of burning girder for limekiln with air cooling apparatus provided by the invention, the cooling air stream (20) sprayed from cooling air pipeline (18) can cool beam body crown wall (2) outside, and the flame (21) that sprays from burner (17) can be suppressed to the expansion in beam body crown wall (2) direction, prevent flame (21) from directly touching this part; And the particulate matter of carrying secretly in the air-flow that burner (17) sprays can be weakened to the radial souring of this part, especially beam body crown wall bottom side plate junction (19), reduce washing away and ablation effect these regions, improve the work-ing life of burning beam.
Claims (8)
1. the burning girder for limekiln with air cooling apparatus, comprise beam body (1) and be positioned at beam body (1) inner fuel channel (13), burner (17), its central sill body (1) defines air passageways (14); Burner (17) comprises the upper fuel oil atomizer (16) arranged of fuel channel (13) and the comburent air duct (15) be connected with air passageways (14) be opened on beam body (1) corresponding fuel oil atomizer (16) position, it is characterized in that: near the comburent air duct (15) on beam body (1), offer the cooling air pipeline (18) be connected with air passageways (14).
2. a kind of burning girder for limekiln with air cooling apparatus as claimed in claim 1, it is characterized in that: described beam body (1) is made up of wall (4) at the bottom of beam body crown wall (2), Liang Ticeqiang (3), beam body, what at the bottom of beam body crown wall (2), Liang Ticeqiang (3), beam body, wall (4) can be all or part of is set to hollow structure, is limited with heat-eliminating medium circulation cavity (5) inside body of wall.
3. a kind of burning girder for limekiln with air cooling apparatus as claimed in claim 2, is characterized in that: described burner (17) in one-sided the offering of Liang Ticeqiang (3), also can be offered at bilateral.
4. a kind of burning girder for limekiln with air cooling apparatus as claimed in claim 3, is characterized in that: described cooling air pipeline (18) is arranged on comburent air duct (15) top.
5. a kind of burning girder for limekiln with air cooling apparatus as claimed in claim 3, is characterized in that: described cooling air pipeline (18) is arranged on comburent air duct (15) surrounding.
6. a kind of burning girder for limekiln with air cooling apparatus as claimed in claim 1, is characterized in that: described cooling air pipeline (18) can be as a whole, also can discrete distribution.
7. a kind of burning girder for limekiln with air cooling apparatus as claimed in claim 1, is characterized in that: the cross section of described beam body (1) can be "T"-shaped, rectangle or trapezoidal.
8. a kind of burning girder for limekiln with air cooling apparatus as claimed in claim 2, is characterized in that: described beam body crown wall (2) wall can be welded by polylith metal sheet, also can form by one piece of metal sheet is moulded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510021873.5A CN104496208B (en) | 2015-01-16 | 2015-01-16 | A kind of burning girder for limekiln with air-cooling apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510021873.5A CN104496208B (en) | 2015-01-16 | 2015-01-16 | A kind of burning girder for limekiln with air-cooling apparatus |
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| Publication Number | Publication Date |
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| CN104496208A true CN104496208A (en) | 2015-04-08 |
| CN104496208B CN104496208B (en) | 2019-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510021873.5A Active CN104496208B (en) | 2015-01-16 | 2015-01-16 | A kind of burning girder for limekiln with air-cooling apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948541A (en) * | 2016-07-06 | 2016-09-21 | 石家庄新华能源环保科技股份有限公司 | Gas-cooled combustion beam |
| CN106045342A (en) * | 2016-07-25 | 2016-10-26 | 石家庄新华能源环保科技股份有限公司 | Heat-insulation combustion beam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696803A (en) * | 2009-10-30 | 2010-04-21 | 贾会平 | T-shaped burning beam |
| CN201626917U (en) * | 2010-01-19 | 2010-11-10 | 杨霞 | Combustion beam for lime kiln |
| CN201660562U (en) * | 2010-03-30 | 2010-12-01 | 杨霞 | Combustion beam for lime kiln |
| CN204125377U (en) * | 2014-08-07 | 2015-01-28 | 石家庄新华能源环保科技股份有限公司 | A kind of T-shaped burning beam |
-
2015
- 2015-01-16 CN CN201510021873.5A patent/CN104496208B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696803A (en) * | 2009-10-30 | 2010-04-21 | 贾会平 | T-shaped burning beam |
| CN201626917U (en) * | 2010-01-19 | 2010-11-10 | 杨霞 | Combustion beam for lime kiln |
| CN201660562U (en) * | 2010-03-30 | 2010-12-01 | 杨霞 | Combustion beam for lime kiln |
| CN204125377U (en) * | 2014-08-07 | 2015-01-28 | 石家庄新华能源环保科技股份有限公司 | A kind of T-shaped burning beam |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948541A (en) * | 2016-07-06 | 2016-09-21 | 石家庄新华能源环保科技股份有限公司 | Gas-cooled combustion beam |
| CN106045342A (en) * | 2016-07-25 | 2016-10-26 | 石家庄新华能源环保科技股份有限公司 | Heat-insulation combustion beam |
| CN106045342B (en) * | 2016-07-25 | 2019-03-29 | 石家庄新华能源环保科技股份有限公司 | A kind of adiabatic combustion beam |
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| CN104496208B (en) | 2019-04-05 |
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Effective date of registration: 20211117 Address after: 215200 north side of building e, No. 1868 Guangming Road, Jiangling street, Wujiang District, Suzhou City, Jiangsu Province Patentee after: Suzhou Langxin Intelligent Technology Co.,Ltd. Address before: 606, West building, Kequn building, No. 30 Xueyuan Road, Haidian District, Beijing 100083 Patentee before: BEIJING LAPSEN ENERGY ENVIRONMENTAL TECHNOLOGY CO.,LTD. |
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