CN217459264U - Refractory material lining of bracket type double-chamber lime kiln - Google Patents
Refractory material lining of bracket type double-chamber lime kiln Download PDFInfo
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- CN217459264U CN217459264U CN202221309617.8U CN202221309617U CN217459264U CN 217459264 U CN217459264 U CN 217459264U CN 202221309617 U CN202221309617 U CN 202221309617U CN 217459264 U CN217459264 U CN 217459264U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
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Abstract
The utility model discloses a refractory material inside lining of two thorax limekilns of cow-legged formula relates to the limekiln field, including furnace and refractory material inside lining, the refractory material inside lining includes furnace roof position, preheating zone upper portion, preheating zone lower part, calcining zone straight section upper portion, calcining zone straight section lower part, annular channel inner wall, arch bridge and hunch foot, annular channel top, annular channel outer wall, cooling zone upper portion, cooling zone lower part, connecting channel top, connecting channel side wall and connecting channel bottom, preheating zone upper portion is located the one end surface at furnace roof position, the preheating zone lower part is located the one end surface on preheating zone upper portion. A refractory material inside lining of two thorax limekilns of bracket formula, the structure is more reasonable, the life-span is longer, a service life can reach more than 3 years, after the maintenance of individual vulnerable position, whole life can exceed 6 years, is a value to widely popularize two thorax limekilns refractory material inside lining, the effect of use is better for traditional mode.
Description
Technical Field
The utility model relates to a limekiln field, concretely relates to refractory material inside lining of two thorax limekilns of bracket formula.
Background
In both single-hearth lime kilns and double-hearth lime kilns, refractory materials are built in metal shells to serve as high-temperature-resistant linings, the refractory material linings can be divided into two layers, namely an outer heat-insulating layer and an inner working layer, and the heat-insulating layer is generally made of light refractory materials and comprises light refractory bricks, calcium silicate boards, ceramic fiber products, light castable materials and the like; the working layer is generally made of compact refractory materials, such as compact fired bricks, compact unfired bricks, compact precast blocks, compact castable and the like, wherein the heat insulation layer has single function, is simple to build and is not easy to damage; the working layer has a large influence on the high-temperature service performance of the lime kiln, and is large in investment, complex in building and rapid in abrasion, so that the working layer is the key point in designing the refractory material lining of the lime kiln.
The traditional single-hearth lime kiln has a simple structure, the height is about 20 meters generally, the using amount of the refractory materials is 300-400 tons, the lime yield is 100-200t/d generally, clay bricks and high-alumina bricks are mostly adopted in the working layer of the refractory material lining, namely, the clay bricks are used in a preheating zone and a cooling zone, and the high-alumina bricks are used in a calcining zone, so that the using requirement of the single-hearth lime kiln can be met.
The double-hearth lime kiln has a complex structure, the height can reach more than 30 meters, the usage amount of refractory materials reaches nearly thousand tons, the alternate ignition and calcination characteristics and the yield of 500 plus 800t/d ensure that the design of a working layer of the refractory material lining is much more complex than that of a single-hearth lime kiln, and the working layer of clay bricks used in a preheating zone and a cooling zone and high-alumina bricks used in a calcining zone can not meet the use requirements of the double-hearth lime kiln only by moving the single-hearth lime kiln, so that the refractory material lining of the bracket type double-hearth lime kiln is provided.
SUMMERY OF THE UTILITY MODEL
A primary object of the utility model is to provide a refractory material inside lining of two thorax limekilns of bracket formula can effectively solve the problem in the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a refractory material lining of a cow-leg type double-hearth lime kiln comprises a hearth and a refractory material lining, wherein the refractory material lining comprises a furnace top part, a preheating zone upper part, a preheating zone lower part, a calcining zone straight section upper part, a calcining zone straight section lower part, an annular channel inner wall, an arch bridge and arch feet, an annular channel top, an annular channel outer wall, a cooling zone upper part, a cooling zone lower part, a connecting channel top, a connecting channel side wall and a connecting channel bottom, the preheating zone upper part is positioned on the outer surface of one end of the furnace top part, the preheating zone lower part is positioned on the outer surface of one end of the preheating zone upper part, the calcining zone straight section upper part is positioned on the outer surface of one end of the preheating zone lower part, the calcining zone straight section lower part is positioned on the outer surface of one end of the calcining zone straight section upper part, the annular channel inner wall is positioned on the outer surface of one side of the calcining zone straight section lower part, and the arch bridge and the arch feet are positioned on the lower part of the annular channel inner wall, the annular channel top is located the one end surface of the straight section lower part of calcining zone, the annular channel outer wall is located the one end surface on annular channel top, cooling zone upper portion is located the one end surface of annular channel outer wall, the one end surface that is located cooling zone upper portion under the cooling zone, the connecting channel top is located one side on annular channel top, the connecting channel side wall is located the one end surface on connecting channel top, be located the one end surface of connecting channel side wall at the bottom of the connecting channel, the middle part of furnace is equipped with the spray gun.
Preferably, the inner wall of the hearth is detachably connected with the outer surface of one end of the spray gun.
Preferably, the upper part of the straight section of the calcining zone, the lower part of the straight section of the calcining zone, the upper part of the cooling zone, the outer wall of the annular channel, the top of the annular channel, the side wall of the connecting channel, the bottom of the connecting channel, the top of the connecting channel, the non-bracket part at the lower part of the cooling zone, the upper part of the preheating zone and the lower part of the preheating zone are in a structure of a heat insulation layer and a working layer, and the thickness of the working layer is 200-600 mm.
Preferably, the thicknesses of the heat insulation layers of the upper part of the straight section of the calcining zone, the lower part of the straight section of the calcining zone, the non-corbel part of the upper part of the cooling zone, the outer wall of the annular channel, the top of the annular channel, the side wall of the connecting channel, the bottom of the connecting channel and the top of the connecting channel are 150-350mm, the thickness of the heat insulation layer of the corbel part of the upper part of the cooling zone is 40-80mm, and the thicknesses of the heat insulation layers of the non-corbel part of the lower part of the cooling zone, the upper part of the preheating zone and the lower part of the preheating zone are 150-300 mm.
Preferably, the top part of the furnace is of a working layer structure, the thickness of the working layer is 100-.
Compared with the prior art, the utility model discloses following beneficial effect has: this refractory material inside lining of two thorax limekilns of bracket formula, the structure is more reasonable, and the life-span is longer, and a service life can reach more than 3 years, and after individual vulnerable part maintenance, whole life can exceed 6 years, is a two thorax limekiln refractory material inside lining worth wideling popularize, and the effect of use is better for traditional mode.
Drawings
Fig. 1 is a schematic view of the whole structure of the refractory material lining of the cow-leg type double-chamber lime kiln of the present invention.
In the figure: 1. a furnace roof location; 2. preheating the upper part of the belt; 3. the lower part of the preheating zone; 4. the upper part of the straight section of the calcining zone; 5. the lower part of the straight section of the calcining zone; 6. an annular channel inner wall; 7. arch bridges and butts; 8. the top of the annular channel; 9. an annular channel outer wall; 10. the upper part of the cooling zone; 11. the lower part of the cooling zone; 12. connecting the channel top; 13. connecting the channel side walls; 14. connecting the channel bottom; 15. a hearth; 16. a refractory lining; 17. a spray gun.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in figure 1, the refractory material lining of the cow-leg double-hearth lime kiln comprises a hearth 15 and a refractory material lining 16, wherein the refractory material lining 16 comprises a furnace top part 1, a preheating zone upper part 2, a preheating zone lower part 3, a calcining zone straight section upper part 4, a calcining zone straight section lower part 5, an annular channel inner wall 6, an arch bridge and an arch foot 7, an annular channel top 8, an annular channel outer wall 9, a cooling zone upper part 10, a cooling zone lower part 11, a connecting channel top 12, a connecting channel side wall 13 and a connecting channel bottom 14, the preheating zone upper part 2 is positioned on the outer surface of one end of the furnace top part 1, the preheating zone lower part 3 is positioned on the outer surface of one end of the preheating zone upper part 2, the calcining zone straight section upper part 4 is positioned on the outer surface of one end of the preheating zone lower part 3, the calcining zone straight section lower part 5 is positioned on the outer surface of one end of the calcining zone straight section upper part 4, the annular channel inner wall 6 is positioned on the outer surface of one side of the calcining zone straight section lower part 5, the arch bridge and the arch springing 7 are located at the lower part of the annular channel inner wall 6, the annular channel top 8 is located at the outer surface of one end of the calcining zone straight section lower part 5, the annular channel outer wall 9 is located at the outer surface of one end of the annular channel top 8, the cooling zone upper part 10 is located at the outer surface of one end of the annular channel outer wall 9, the cooling zone lower part 11 is located at the outer surface of one end of the cooling zone upper part 10, the connecting channel top 12 is located at one side of the annular channel top 8, the connecting channel side wall 13 is located at the outer surface of one end of the connecting channel top 12, the connecting channel bottom 14 is located at the outer surface of one end of the connecting channel side wall 13, and the middle part of the hearth 15 is provided with a spray gun 17.
Furthermore, the inner wall of the hearth 15 is detachably connected with the outer surface of one end of the spray gun 17, and the spray gun 17 mainly has the effect of spraying fuel when in use.
Further, the upper part 4 of the straight section of the calcining zone, the lower part 5 of the straight section of the calcining zone, the upper part 10 of the cooling zone, the outer wall 9 of the annular channel, the top 8 of the annular channel, the side wall 13 of the connecting channel, the bottom 14 of the connecting channel, the top 12 of the connecting channel and the lower part of the cooling zoneThe non-bracket part of 11, the upper part 2 of the preheating zone and the lower part 3 of the preheating zone are in a structure of a heat insulation layer and a working layer. The volume density of the heat-insulating layer is 0.1-2.2g/cm 3 The light refractory material comprises light refractory bricks, diatomite bricks, calcium silicate boards, ceramic fiber products, light castable and the like, and can be laid without using refractory slurry for dry laying or wet laying. The working layer has a volume density of 2.3-3.0g/cm 3 The firebricks are densely fired, and when the firebricks are laid, the firebricks are wet-laid by using refractory mortar, and the working layer is directly contacted with limestone to bear high temperature. The thickness of the working layer is 200-600 mm.
Further, the thickness of the heat insulation layer of the upper part 4 of the straight section of the calcining zone, the lower part 5 of the straight section of the calcining zone, the non-corbel part of the upper part 10 of the cooling zone, the outer wall 9 of the annular channel, the top 8 of the annular channel, the side wall 13 of the connecting channel, the bottom 14 of the connecting channel and the top 12 of the connecting channel is 150-350mm, and the thickness of the heat insulation layer of the corbel part of the upper part of the cooling zone is 50 mm; the thickness of the heat insulation layer at the non-bracket part of the lower part 11 of the cooling zone, the upper part 2 of the preheating zone and the lower part 3 of the preheating zone is 150-300mm, and the heat insulation layer is close to the metal shell and does not contact with limestone when in use.
Further, the furnace top part 1 is of a working layer structure, the thickness of the working layer is 150mm, the annular channel inner wall 6, the arch bridge and the arch springing 7 are of the working layer structure, the thickness of the working layer is 480mm, the bracket part of the lower part (11) of the cooling zone is of the working layer structure, and the thickness of the working layer is 510 mm. The working layer adopts the bulk density of 2.3-3.0g/cm 3 The firebricks are densely sintered, when in building, the firebricks are wet-built by using refractory slurry, the working layer is directly contacted with limestone to bear high temperature, and the furnace top part 1, the annular channel inner wall 6, the arch bridge, the arch springing 7 and the bracket part of the lower part (11) of the cooling zone are not provided with heat insulation layers.
It should be noted that the utility model relates to a refractory material inside lining of two thorax limekilns of bracket formula, when making the inside lining, go on according to following step:
(1) all the heat insulating layer materials and the working layer materials are prepared completely. And producing all refractory materials according to a material design table manufactured by a design unit according to the technical requirements of the lime kiln, the daily output index, the size of the furnace shell, the performance of the limestone raw material and the calcining index, and transporting to a construction site.
(2) And measuring the size, roundness, levelness and verticality of each part of the furnace shell, comparing with a design drawing, and verifying whether the real size is consistent with the design drawing.
(3) And (5) finding the central line of the hearth, paying off, and marking the positions and the sizes of all the parts according to the central line.
(4) And erecting a support, arranging a masonry platform, and erecting an electric hoist for feeding.
(5) Building according to a design drawing, manufacturing a lining component structure according to the sequence from bottom to top in the building process, and leveling the part needing leveling by using a castable or a ramming mass; and reserving an expansion joint strictly according to the requirements of a design drawing.
(6) And after the whole masonry is finished, the support is dismantled.
(7) The furnace is dried according to the requirements of the furnace drying curve, and the furnace can be put into normal use after the furnace drying is finished, so that the method is practical.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a refractory material inside lining of two thorax limekilns of bracket formula, includes furnace (15) and refractory material inside lining (16), its characterized in that: the refractory material lining (16) comprises a furnace top part (1), a preheating zone upper part (2), a preheating zone lower part (3), a calcining zone straight section upper part (4), a calcining zone straight section lower part (5), an annular channel inner wall (6), an arch bridge, arch legs (7), an annular channel top (8), an annular channel outer wall (9), a cooling zone upper part (10), a cooling zone lower part (11), a connecting channel top (12), a connecting channel side wall (13) and a connecting channel bottom (14), wherein the preheating zone upper part (2) is positioned on the outer surface of one end of the furnace top part (1), the preheating zone lower part (3) is positioned on the outer surface of one end of the preheating zone upper part (2), the calcining zone straight section upper part (4) is positioned on the outer surface of one end of the preheating zone lower part (3), the calcining zone straight section lower part (5) is positioned on the outer surface of one end of the calcining zone straight section upper part (4), the inner wall (6) of the annular channel is positioned on the outer surface of one side of the lower part (5) of the straight section of the calcining zone, the arch bridge and the arch springing (7) are positioned at the lower part of the inner wall (6) of the annular channel, the top (8) of the annular channel is positioned at the outer surface of one end of the lower part (5) of the calcining zone straight section, the annular channel outer wall (9) is positioned on the outer surface of one end of the annular channel top (8), the upper part (10) of the cooling zone is positioned on the outer surface of one end of the outer wall (9) of the annular channel, the lower part (11) of the cooling zone is positioned on the outer surface of one end of the upper part (10) of the cooling zone, the connecting channel top (12) is positioned at one side of the annular channel top (8), the connecting channel side wall (13) is positioned at the outer surface of one end of the connecting channel top (12), the connecting channel bottom (14) is positioned on the outer surface of one end of the connecting channel side wall (13), and the middle part of the hearth (15) is provided with a spray gun (17).
2. The refractory lining of a cow-leg double-bore lime kiln as claimed in claim 1, wherein: the inner wall of the hearth (15) is detachably connected with the outer surface of one end of the spray gun (17).
3. The refractory lining of a cow-leg double-bore lime kiln as claimed in claim 1, wherein: the device comprises a calcining zone straight section upper part (4), a calcining zone straight section lower part (5), a cooling zone upper part (10), an annular channel outer wall (9), an annular channel top (8), a connecting channel side wall (13), a connecting channel bottom (14), a connecting channel top (12), a non-bracket part of a cooling zone lower part (11), a preheating zone upper part (2) and a preheating zone lower part (3) which are of a heat insulation layer + working layer structure, wherein the thickness of the working layer is 200-fold-600 mm.
4. The refractory lining of a cow-leg double-bore lime kiln as claimed in claim 1, wherein: the thickness of the heat insulation layer of the upper part (4) of the straight section of the calcining zone, the lower part (5) of the straight section of the calcining zone, the non-bracket part of the upper part (10) of the cooling zone, the outer wall (9) of the annular channel, the top (8) of the annular channel, the side wall (13) of the connecting channel, the bottom (14) of the connecting channel and the top (12) of the connecting channel is 150-350mm, the thickness of the heat insulation layer of the bracket part of the upper part (10) of the cooling zone is 40-80mm, and the thickness of the heat insulation layer of the non-bracket part of the lower part (11) of the cooling zone, the upper part (2) of the preheating zone and the lower part (3) of the preheating zone is 150-300 mm.
5. The refractory lining of a cow-leg double-bore lime kiln as claimed in claim 1, wherein: the furnace top part (1) is of a working layer structure, the thickness of the working layer is 100-200mm, the annular channel inner wall (6), the arch bridge and the arch foot (7) are of the working layer structure, the thickness of the working layer is 400-600mm, the bracket part of the lower part (11) of the cooling zone is of the working layer structure, and the thickness of the working layer is 400-600 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221309617.8U CN217459264U (en) | 2022-05-26 | 2022-05-26 | Refractory material lining of bracket type double-chamber lime kiln |
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| CN202221309617.8U CN217459264U (en) | 2022-05-26 | 2022-05-26 | Refractory material lining of bracket type double-chamber lime kiln |
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| CN217459264U true CN217459264U (en) | 2022-09-20 |
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| CN202221309617.8U Active CN217459264U (en) | 2022-05-26 | 2022-05-26 | Refractory material lining of bracket type double-chamber lime kiln |
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