CN104163580B - A kind of burning girder for limekiln - Google Patents
A kind of burning girder for limekiln Download PDFInfo
- Publication number
- CN104163580B CN104163580B CN201410383638.8A CN201410383638A CN104163580B CN 104163580 B CN104163580 B CN 104163580B CN 201410383638 A CN201410383638 A CN 201410383638A CN 104163580 B CN104163580 B CN 104163580B
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- Prior art keywords
- fuel
- conduction oil
- burning
- beam body
- fuel conduit
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- 239000000446 fuel Substances 0.000 claims abstract description 52
- 239000002826 coolant Substances 0.000 claims abstract description 9
- 239000002737 fuel gas Substances 0.000 abstract description 11
- 235000019738 Limestone Nutrition 0.000 abstract description 9
- 239000006028 limestone Substances 0.000 abstract description 9
- 238000001354 calcination Methods 0.000 abstract description 6
- 238000002485 combustion reaction Methods 0.000 description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 235000015450 Tilia cordata Nutrition 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 208000002925 Dental Caries Diseases 0.000 description 1
- 238000005039 chemical industry Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
Abstract
The present invention relates to a kind of burning girder for limekiln, export including beam body, conduction oil entrance and conduction oil, be provided with cooling medium cavity, conduction oil entrance and conduction oil outlet between outer wall and the inwall of beam body and be connected with cooling medium cavity respectively.Beam body is concave structure, is made up of two fuel channels and air duct, and each fuel channel bottom is provided with 10 burner spouts, is provided with fuel conduit in fuel channel, and fuel conduit is shunt structure or closes line structure, and fuel conduit is connected to burner.Air duct is provided with air port.The cross section of fuel conduit is circular or rectangle.Burning girder for limekiln of the present invention is designed as concave structure, 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 improving ignition temperature and the calcining effect of limestone of burning beam.
Description
Technical field
The invention belongs to technical field of combustion equipment, relate to the burning beam of a kind of industrial furnace, be specifically related to the burning beam of a kind of concave structure.
Background technology
It is the new technique of lime production with beam-type limekiln calcined limestone.Beam-type limekiln has the advantages such as energy consumption is low, lime product quality is good, production capacity is strong, operating flexibility is big, is widely used in the lime production of the purposes such as metallurgy, chemical industry.Calcining needs fuel to burn at burning zone, releases heat calcined material.The decomposition temperature of limestone is about 900 DEG C, and calcining heat is generally 1000～1200 DEG C.For reaching calcining heat, produce qualified Calx, need the fuel of certain calorific value.Low calorie fuels burning does not reaches the temperature of requirement, and limestone cannot decompose；Or temperature is low, decomposition of limestone is incomplete, causes the ropy problem of raw burn, lime product.In smelter production process, producing substantial amounts of blast furnace gas, be valuable fuel source, the calorific value of blast furnace gas is 3000～3400KJ, owing to calorific value is low, it is impossible to be directly used in calcined limestone, makes a large amount of low calorie fuels not to be fully used.Produce Calx also to need to purchase exotic fuels, cause the wasting of resources, affect economic benefit.
Authorization Notice No. is the open a kind of Two-cuff Technique burning beam-type limekiln of utility model patent of CN203144294U.Limekiln is provided with thermophore, combustor and two-layer burning beam, and burning beam is made up of air burning beam and fuel gas buring beam respectively.Thermophore and combustor lay respectively at air burning beam and the two ends of fuel gas buring beam.Combustion air and combustion gas are preheated by this patent by thermophore, and combustion air and fuel gas after preheating enter burning zone by air burning beam and fuel gas buring beam respectively and carries out the calcined limestone material that burns, and improve the ignition temperature of low calorie fuels.But the high temperature air after Yu Re enters beam body, easily burns out beam body inner member, affects using effect and the service life of burning beam.
Summary of the invention
It is an object of the invention 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, it is to avoid burn out beam body inner member, improve the combustion efficiency of low calorie fuels.
Burning girder for limekiln of the present invention, exports including beam body, conduction oil entrance and conduction oil, is provided with cooling medium cavity, conduction oil entrance and conduction oil outlet and is connected with cooling medium cavity respectively between outer wall and the inwall of beam body.Beam body is concave structure, is made up of two fuel channels and air duct, 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 duct is provided with air port.
Fuel conduit is shunt structure or closes line structure, and during shunt structure, every fuel conduit and a burner connect；The fuel conduit of described conjunction line structure is made up of house steward and arm, and house steward is connected with burner by arm.The cross section of fuel conduit is circular or rectangle.
Burning girder for limekiln of the present invention is by being designed as concave structure, fuel enters burner ejection fuel from both sides fuel channel, combustion air sprays from median air passage lower air spout, combining combustion is mixed with 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 improving ignition temperature and the calcining effect of limestone of burning beam.The present invention can be used for the limekiln of calcining materials by using low calorific value fuel, heat accumulating type limekiln, preheated air and the limekiln of 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, 2 conduction oil outlets, 3 fuel channels, 4 conduction oil entrances, 5 burners, 6 cooling medium cavitys, 7 fuel conduits, 8 air ducts, 9 baffle plates, 10 air ports, 11 house stewards, 12 arms.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.Scope is not limited to embodiment, and those skilled in the art make any change in the range of claim limits and fall within the scope of protection of the invention.
Embodiment 1
Burning girder for limekiln of the present invention as shown in Figure 1, Figure 2 and Figure 3, exports 2 including beam body 1, conduction oil entrance 4 and conduction oil, is provided with cooling medium cavity 6, conduction oil entrance and conduction oil outlet and is connected with cooling medium cavity respectively between outer wall and the inwall of beam body.Burning beam is concave structure, is made up of two fuel channels 3 and air duct 8, 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 and a burner 5 connect.The cross section of fuel conduit is rectangle.Air duct is provided with air port 10, and air port both sides are provided with baffle plate 9.Fuel gas pipeline is divided into two groups, is connected with fuel feed system from two of beam body, and air duct is connected with air preheating system from two of beam body by pipeline, and conduction oil entrance and conduction oil outlet are connected with Heat-conduction oil circulation system respectively.
The method of operation of burning girder for limekiln of the present invention is, fuel gas enters burner 5 by fuel conduit 7, and the air after preheating enters air duct 8 from beam body both sides, sprays through air port 10, with the fuel gas mixed combustion of burner ejection, produce the high-temperature calcination limestone material of 1200～1600 DEG C.
Embodiment 2
As shown in Figure 4, fuel conduit 7, for closing line structure, is made up of another embodiment of the present invention house steward 11 and arm 12, 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 same as in Example 1.
Claims (2)
1. a burning girder for limekiln, (2) are exported including beam body (1), conduction oil entrance (4) and conduction oil, cooling medium cavity (6) it is provided with between outer wall and the inwall of beam body, conduction oil entrance and conduction oil outlet are connected with cooling medium cavity respectively, it is characterized in that: described beam body is concave structure, being made up of two fuel channels (3) and air duct (8), air duct is positioned at the centre of two fuel channels；Each fuel channel bottom is provided with 5～20 burners (5), is provided with fuel conduit (7) in fuel channel, and fuel conduit is connected to burner；Described air duct is provided with air port (10), and air port both sides are provided with baffle plate (9)；The cross section of described fuel conduit (7) is circular or rectangle.
Burning girder for limekiln the most according to claim 1, is characterized in that: described fuel conduit (7) is shunt structure or closes line structure, and during shunt structure, every fuel conduit and a burner (5) connect；The fuel conduit of described conjunction line structure is made up of house steward (11) and arm (12), and house steward is connected with burner by arm.
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 CN104163580A (en) | 2014-11-26 |
| CN104163580B true CN104163580B (en) | 2017-01-04 |
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