CN104163580A - Combustion beam for lime kiln - Google Patents
Combustion beam for lime kiln Download PDFInfo
- Publication number
- CN104163580A CN104163580A CN201410383638.8A CN201410383638A CN104163580A CN 104163580 A CN104163580 A CN 104163580A CN 201410383638 A CN201410383638 A CN 201410383638A CN 104163580 A CN104163580 A CN 104163580A
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- Prior art keywords
- fuel
- combustion
- air
- heat
- beam body
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Abstract
The invention relates to a combustion beam for a lime kiln. The combustion beam comprises a beam body, a heat-conducting oil inlet and a heat-conducting oil outlet, wherein a cooling medium cavity is formed between the outer wall and the inner wall of the beam body; the heat-conducting oil inlet and the heat-conducting oil outlet are respectively connected with the cooling medium cavity; the beam body is of a concave structure, and consists of two fuel channels and an air channel; 10 burner nozzles are formed in the lower part of each fuel channel; a fuel pipeline is arranged inside each fuel channel, and is of a branch structure or a combined structure; the fuel pipelines are connected to burners; an air nozzle is formed in the air channel; and the section of each fuel pipeline is round or rectangular. The combustion beam for the lime kiln disclosed by the invention is designed into a concave structure, so that the fuel gas and preheated air respectively enter a kiln body to support construction through different channels, preheated high-temperature air is prevented from burning out internal members of the beam body, and improvement of the combustion temperature of the combustion beam and the calcination effect of limestone is facilitated.
Description
Technical field
The invention belongs to combustion equipment technical field, relate to the burning beam that a kind of industrial furnace is used, be specifically related to a kind of burning beam of concave structure.
Background technology
It with beam-type limekiln calcined limestone, is the new technology of lime production.Beam-type limekiln has the advantages such as energy consumption is low, lime product quality is good, throughput is strong, turndown ratio is large, is widely used in the lime production of the purposes such as metallurgy, chemical industry.Calcining needs fuel to burn at calcining zone, emits heat heating calcined material.The decomposition temperature of Wingdale is 900 ℃ of left and right, and calcining temperature is generally 1000～1200 ℃.For reaching calcining temperature, produce qualified lime, need the fuel of certain calorific value.Low calorie fuels burning does not reach the temperature of requirement, and Wingdale just can not decompose; Or temperature is low, decomposition of limestone is incomplete, causes raw burn, the ropy problem of lime product.In smelter production process, produce a large amount of blast furnace gases, be valuable fuel source, the calorific value of blast furnace gas is 3000～3400KJ, because calorific value is low, can not be directly used in calcined limestone, and a large amount of low calorie fuelss can not be fully used.Produce lime and also need to purchase high performance fuel, cause the wasting of resources, affect economic benefit.
Granted publication number is that the utility model patent of CN203144294U discloses a kind of pair of heat-accumulation combustion beam-type limekiln.Limestone kiln is provided with thermophore, combustion chamber and two-layer burning beam, and burning beam is comprised of air combustion beam and fuel gas buring beam respectively.Thermophore and combustion chamber lay respectively at the two ends of air combustion beam and fuel gas buring beam.This patent is carried out preheating by thermophore to combustion air and combustion gas, and the combustion air after preheating and fuel gas enter the calcining zone calcined limestone material that burns by air combustion beam and fuel gas buring beam respectively, has improved the temperature of combustion of low calorie fuels.But the high temperature air after preheating enters beam body, easily burn out beam body inner member, affect result of use and the work-ing life of burning beam.
Summary of the invention
The object of this invention is to provide a kind of burning girder for limekiln, by the concave structure of burning beam, make air combustion-supporting burning in different passages enters kiln body respectively after fuel gas and preheating, avoid burning out beam body inner member, improve the combustion efficacy of low calorie fuels.
Burning girder for limekiln of the present invention, comprises beam body, thermal oil entrance and thermal oil outlet, is provided with heat-eliminating medium cavity between the outer wall of beam body and inwall, and outlet is connected with heat-eliminating medium cavity respectively thermal oil entrance with thermal oil.Beam body is concave structure, two fuel channels and air passageways, consists of, and each fuel channel bottom is provided with 5～20 burners, is provided with fuel conduit in fuel channel, and fuel conduit is connected to burner.Air passageways is provided with air jet.
Fuel conduit is shunt structure or closes line structure, and during shunt structure, every fuel conduit is connected with a burner; The described fuel conduit that closes line structure consists of house steward and arm, and house steward is connected with burner by arm.The cross section of fuel conduit is circle or rectangle.
Burning girder for limekiln of the present invention is by being designed to concave structure, fuel enters burner ejection fuel from both sides fuel channel, combustion air sprays from median air passage bottom air jet, with the mixed combining combustion of fuel gas, make air combustion-supporting burning in different passages enters kiln body respectively after fuel gas and preheating, after avoiding preheating, high temperature air burns out beam body inner member, is conducive to improve the temperature of combustion of burning beam and the calcining effect of Wingdale.The present invention can be used for the limestone kiln of limestone kiln, heat accumulating type limestone kiln, preheated air and the fuel of calcining materials by using low calorific value fuel.
Accompanying drawing explanation
Fig. 1 is the structural representation of burning girder for limekiln of the present invention;
Fig. 2 is the A-A figure of Fig. 1;
Fig. 3 is that the A of Fig. 1 is to figure;
Fig. 4 is the structural representation of another embodiment of the present invention.
Wherein:
1-beam body, the outlet of 2-thermal oil, 3-fuel channel, 4-thermal oil entrance, 5-burner, 6-heat-eliminating medium cavity, 7-fuel conduit, 8-air passageways, 9-baffle plate, 10-air jet, 11-house steward, 12-arm.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.Protection domain of the present invention is not limited to embodiment, makes any change and also belong to the scope of protection of the invention in the scope that those skilled in the art limit in claim.
Embodiment 1
Burning girder for limekiln of the present invention as shown in Figure 1, Figure 2 and Figure 3, comprise beam body 1, thermal oil entrance 4 and thermal oil outlet 2, between the outer wall of beam body and inwall, be provided with heat-eliminating medium cavity 6, outlet is connected with heat-eliminating medium cavity respectively thermal oil entrance with thermal oil.Burning beam is concave structure, two fuel channels 3 and air passageways 8, consists of, and each fuel channel bottom is provided with 10 burners 5, is provided with fuel conduit 7 in fuel channel, and fuel conduit 7 is shunt structure, and every fuel conduit is connected with a burner 5.The cross section of fuel conduit is rectangle.Air passageways is provided with air jet 10, and air jet both sides are provided with baffle plate 9.Gas line is divided into two groups, from two of beam body, is connected with fuel feed system, and air passageways is connected with air preheating system by pipeline from two of beam body, and outlet is connected with the thermal oil recycle system respectively thermal oil entrance with thermal oil.
The operation scheme of burning girder for limekiln of the present invention is, fuel gas enters burner 5 by fuel conduit 7, air after preheating enters air passageways 8 from beam body both sides, through air jet 10 ejections, fuel gas mixed firing with burner ejection, produces the high-temperature calcination limestone material of 1200～1600 ℃.
Embodiment 2
As shown in Figure 4, fuel conduit 7, for closing line structure, consists of house steward 11 and arm 12 another embodiment of the present invention, and house steward is divided into two ends, enters fuel channel 3 respectively from two of beam body, and straight tube is uniformly distributed on house steward, and house steward is connected with burner by arm.Other structure is identical with embodiment 1.
Claims (3)
1. a burning girder for limekiln, comprise beam body (1), thermal oil entrance (4) and thermal oil outlet (2), between the outer wall of beam body and inwall, be provided with heat-eliminating medium cavity (6), outlet is connected with heat-eliminating medium cavity respectively thermal oil entrance with thermal oil, it is characterized in that: described beam body is concave structure, by two fuel channels (3) and air passageways (8), formed, each fuel channel bottom is provided with 5～20 burners (5), in fuel channel, be provided with fuel conduit (7), fuel conduit is connected to burner; Described air passageways is provided with air jet (10).
2. burning girder for limekiln according to claim 1, is characterized in that: described fuel conduit (7) is for shunt structure or close line structure, and during shunt structure, every fuel conduit is connected with a burner (5); The described fuel conduit that closes line structure consists of house steward (11) and arm (12), and house steward is connected with burner by arm.
3. burning girder for limekiln according to claim 1, is characterized in that: the cross section of described fuel conduit (7) is circle or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410383638.8A CN104163580B (en) | 2014-08-07 | A kind of burning girder for limekiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410383638.8A CN104163580B (en) | 2014-08-07 | A kind of burning girder for limekiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104163580A true CN104163580A (en) | 2014-11-26 |
| CN104163580B CN104163580B (en) | 2017-01-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745798A (en) * | 2019-10-17 | 2020-02-04 | 昆明理工大学 | Method and device for removing carbon dioxide in phosphate ore by calcining CO-containing industrial tail gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203373274U (en) * | 2013-05-30 | 2014-01-01 | 石家庄新华能源环保科技股份有限公司 | Combustion beam for lime kiln |
| CN103922616A (en) * | 2014-03-14 | 2014-07-16 | 石家庄奋进科技有限公司 | Steel-refractory material composite heat insulation type combustion beam |
| CN204125378U (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 burning girder for limekiln |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203373274U (en) * | 2013-05-30 | 2014-01-01 | 石家庄新华能源环保科技股份有限公司 | Combustion beam for lime kiln |
| CN103922616A (en) * | 2014-03-14 | 2014-07-16 | 石家庄奋进科技有限公司 | Steel-refractory material composite heat insulation type combustion beam |
| CN204125378U (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 burning girder for limekiln |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745798A (en) * | 2019-10-17 | 2020-02-04 | 昆明理工大学 | Method and device for removing carbon dioxide in phosphate ore by calcining CO-containing industrial tail gas |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |