CN110894143B - Water-cooled hearth for lime kiln and lime kiln - Google Patents
Water-cooled hearth for lime kiln and lime kiln Download PDFInfo
- Publication number
- CN110894143B CN110894143B CN201911136035.7A CN201911136035A CN110894143B CN 110894143 B CN110894143 B CN 110894143B CN 201911136035 A CN201911136035 A CN 201911136035A CN 110894143 B CN110894143 B CN 110894143B
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- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 24
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 24
- 239000004571 lime Substances 0.000 title claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000002826 coolant Substances 0.000 claims abstract description 18
- 239000011241 protective layer Substances 0.000 claims description 40
- 239000011819 refractory material Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 9
- 229910000851 Alloy steel Inorganic materials 0.000 description 12
- 239000010410 layer Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 239000011449 brick Substances 0.000 description 7
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical group N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The application provides a water-cooled hearth for a lime kiln and the lime kiln, wherein the water-cooled hearth comprises: the cylinder body is provided with a plurality of cylinder wall units, and the cylinder wall units are spliced to form the cylinder body; the water cooling channel is arranged in the cylinder wall unit, and cooling medium is circulated in the water cooling channel and used for cooling the cylinder body. According to the technical scheme provided by the application, the problem of poor cooling effect in the prior art can be solved.
Description
Technical Field
The invention relates to the technical field of lime kilns, in particular to a water-cooled furnace hearth for a lime kiln and the lime kiln.
Background
At present, the hearth of the lime kiln comprises an annular alloy steel structure, a refractory material and castable, wherein the annular alloy steel structure is of a hollow structure, the refractory material is built on the outer side of the annular alloy steel structure, the castable is wrapped at the bottom of the annular alloy steel structure, and the refractory material is built on the castable by utilizing self gravity.
In order to ensure that the annular alloy steel structure and the refractory material are in a reasonable temperature range, an air inlet and an air outlet are formed in the top of the annular alloy steel structure, and a cooling fan is utilized to cool a hearth through the air inlet and the air outlet, so that the problems that the strength is reduced due to overlarge thermal stress generated by the annular alloy steel structure or the refractory material falls off due to thermal deformation are avoided.
But adopt the forced air cooling to carry out refrigerated mode to the hearth among the prior art, it is higher to annular alloy steel structure's preparation requirement, if annular alloy steel structure appears the phenomenon of gas leakage, can't guarantee the air current in the hearth and discharge from preset position, can influence the cooling effect. Therefore, the prior art has the problem of poor cooling effect.
Disclosure of Invention
The invention provides a water-cooling furnace hearth for a lime kiln and the lime kiln, which are used for solving the problem of poor cooling effect in the prior art.
According to one aspect of the present invention there is provided a water cooled hearth for a lime kiln, the water cooled hearth comprising: the cylinder body is provided with a plurality of cylinder wall units, and the cylinder wall units are spliced to form the cylinder body; the water cooling channel is arranged in the cylinder wall unit, and cooling medium is circulated in the water cooling channel and used for cooling the cylinder body.
Further, the water cooling channel comprises a plurality of horizontal sections and a plurality of bending sections, wherein two adjacent horizontal sections are connected through one bending section, and the plurality of horizontal sections are distributed at intervals along the vertical direction.
Further, the water cooling channel further comprises a first vertical section and a second vertical section, the first vertical section and the second vertical section are respectively located at two sides of the cylinder wall unit, the first vertical section is communicated with the horizontal section of the head end, the second vertical section is communicated with the horizontal section of the tail end, an inlet of the water cooling channel is arranged at the end part of the first vertical section, and an outlet of the water cooling channel is arranged at the end part of the second vertical section.
Further, the water-cooled hearth further comprises a protective layer, and the protective layer is arranged on the outer surface of the cylinder wall unit through the plug-in structure.
Further, one of the protective layer and the cylinder wall unit is provided with a plug-in groove, the other of the protective layer and the cylinder wall unit is provided with a plug-in boss, and the plug-in groove and the plug-in boss are matched to form a plug-in structure.
Further, the inserting grooves are dovetail grooves, and the shape and the size of the inserting boss are matched with those of the inserting grooves.
Further, the guard layer comprises a side wall guard layer and a bottom wall guard layer, the side wall guard layer is arranged on the side wall of the cylinder wall unit, the bottom wall guard layer is arranged on the bottom wall of the cylinder wall unit, and the outer surface of the bottom wall guard layer is a curved surface.
Further, the water cooling channel and the cylinder wall unit are of an integrated structure.
Further, the cylinder body is of an annular structure, and the plurality of cylinder wall units are spliced in sequence along the circumferential direction to form the cylinder body.
According to another aspect of the present invention, there is provided a lime kiln comprising: kiln shells, including an upper kiln shell and a lower kiln shell; the water-cooling furnace hearth is respectively connected with the upper kiln shell and the lower kiln shell through the connecting structure, and the water-cooling furnace hearth is provided by the above.
By applying the technical scheme of the invention, the water-cooled hearth comprises a cylinder body and a water-cooled channel. Wherein the cylinder body has a plurality of cylinder wall units, and the cylinder body can be formed by splicing the plurality of cylinder wall units. Specifically, the water cooling channel is arranged in the cylinder wall unit, and cooling medium flows in the water cooling channel, so that the cooling medium can be utilized to cool the cylinder body. By adopting the structure, a hollow annular alloy steel structure is not required, a water-cooling hearth is formed by splicing the cylinder wall units with the water-cooling channels, the cylinder body is cooled in a water-cooling mode, and the cooling effect of the device can be improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a top view of a water-cooled hearth provided in accordance with an embodiment of the present invention;
Fig. 2 shows a front view of the cylinder wall unit of fig. 1;
FIG. 3 shows a side view of the cylinder wall unit of FIG. 1 without a protective layer installed;
FIG. 4 shows a side view of the cylinder wall unit of FIG. 1 with a protective layer installed;
fig. 5 shows a schematic structural diagram of a lime kiln provided according to an embodiment of the invention.
Wherein the above figures include the following reference numerals:
10. A cylinder; 11. a cylinder wall unit; 20. a water cooling channel; 21. a horizontal section; 22. a curved section; 23. a first vertical section; 24. a second vertical section; 30. a protective layer; 31. a sidewall protection layer; 32. a bottom wall protective layer; 40. a plug-in groove; 50. a splicing boss; 60. a kiln shell; 61. feeding a kiln shell; 62. a kiln shell is arranged; 70. a water-cooled hearth; 80. a connection structure; 81. a first connection portion; 82. and a second connecting part.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 4, an embodiment of the present invention provides a water-cooled hearth for a lime kiln, which includes a cylinder body 10 and a water-cooled channel 20. The cylinder body 10 is provided with a plurality of cylinder wall units 11, and the plurality of cylinder wall units 11 are spliced to form the cylinder body 10. Specifically, a plurality of cylinder wall units 11 are spliced in the circumferential direction to form the cylinder block 10. In this embodiment, the water cooling channel 20 is disposed in the cylinder wall unit 11, and a cooling medium flows in the water cooling channel 20, so that the cooling medium can be used to cool the cylinder 10. The number of the wall units 11 may be selected according to the height dimension of the water-cooled hearth and the height dimension of the wall units 11 in the height direction of the water-cooled hearth. In the present embodiment, one cylinder wall unit 11 is provided in the height direction of the water-cooled hearth. In other embodiments, a plurality of cylinder wall units 11 may be provided in the height direction of the water-cooled hearth.
By using the water-cooled furnace cylinder provided by the embodiment, the cylinder body 10 is formed by splicing the plurality of cylinder wall units 11, and the cooling medium flows in the water-cooled channel 20 because the cylinder wall units 11 are provided with the water-cooled channel 20, so that the cooling medium can be used for cooling the cylinder body 10. By adopting the structure, a hollow annular alloy steel structure is not required, the water-cooling hearth is free from air leakage, the cooling medium in the water-cooling channel 20 can be utilized to effectively cool the cylinder body 10, and the cooling effect of the device can be improved.
In the present embodiment, the water cooling passage 20 includes a plurality of horizontal sections 21 and a plurality of curved sections 22, two adjacent horizontal sections 21 are connected by one curved section 22, and the plurality of horizontal sections 21 are arranged at intervals in the vertical direction. By adopting the structure, the water cooling channel 20 is arranged into a serpentine structure, so that the length dimension of the water cooling channel 20 in the cylinder wall unit 11 can be increased, the heat exchange area can be increased, and the cooling effect can be improved. Specifically, the distance between two adjacent horizontal segments 21 can be adjusted according to the use requirement. For example, in order to further enhance the cooling effect, the distance between two adjacent horizontal segments 21 may be reduced, so that the area through which the cooling medium flows is larger.
Specifically, the water cooling passage 20 further includes a first vertical section 23 and a second vertical section 24, and the first vertical section 23 and the second vertical section 24 are located on both sides of the cylinder wall unit 11, respectively. Wherein, the first vertical section 23 is communicated with the horizontal section 21 of the head end, the second vertical section 24 is communicated with the horizontal section 21 of the tail end, the inlet of the water cooling channel 20 is arranged at the end part of the first vertical section 23, and the outlet of the water cooling channel 20 is arranged at the end part of the second vertical section 24. In this embodiment, the cooling medium enters the water cooling channel 20 from the inlet of the first vertical section 23, then flows through the plurality of horizontal sections 21 and the plurality of curved sections 22 to exchange heat with the cylinder 10, and after the heat exchange and cooling of the cylinder 10 are completed, the cooling medium flows out through the outlet of the second vertical section 24.
In order to protect the cylinder body 10, the water-cooled hearth further comprises a protective layer 30, the protective layer 30 is arranged on the outer surface of the cylinder wall unit 11 through a plug structure, the protective layer 30 is disassembled and assembled through the plug structure, operation is facilitated, and disassembly and assembly efficiency can be improved. By providing the protective layer 30 on the outer surface of the cylinder wall unit 11, the cylinder body 10 can be prevented from being worn by lime materials, the wear resistance of the device can be improved, and the service life of the device can be prolonged. In the present embodiment, the protective layer 30 includes a refractory.
Specifically, one of the protective layer 30 and the cylinder wall unit 11 is provided with a plugging groove 40, the other of the protective layer 30 and the cylinder wall unit 11 is provided with a plugging boss 50, and the plugging groove 40 and the plugging boss 50 cooperate to form a plugging structure. In this embodiment, the outer surface of the cylinder wall unit 11 is provided with the insertion groove 40, and the side of the protective layer 30 facing the cylinder wall unit 11 is provided with the insertion boss 50, so that the protective layer 30 can be assembled by inserting the protective layer 30 into the insertion groove 40 of the cylinder wall unit 11 by using the insertion boss 50, thereby facilitating assembly and later maintenance and replacement. In other embodiments, a plug groove 40 may be provided on the side of the protective layer 30 facing the cylinder wall unit 11, and a plug boss 50 may be provided on the outer surface of the cylinder wall unit 11.
In this embodiment, the plugging slot 40 is a dovetail slot, and the shape and size of the plugging boss 50 are adapted to the shape and size of the plugging slot 40. The dovetail groove mode is adopted, so that the protective layer 30 is conveniently inserted into the cylinder wall unit 11, and the protective layer 30 can be prevented from falling off from the cylinder wall unit 11.
Wherein, be provided with a plurality of grafting grooves 40 on the cylinder wall unit 11, every grafting groove 40 is the dovetail, and the inoxidizing coating 30 comprises a plurality of resistant materials, through inserting a plurality of resistant materials in proper order in the dovetail, can accomplish the assembly of inoxidizing coating 30. And, two adjacent resistant materials are laminated mutually, so can promote the protective effect of inoxidizing coating 30 to cylinder body 10.
And insert in the dovetail in proper order a plurality of resistant materials and establish, the grafting boss on every resistant material and grafting groove cooperate and all can exert effort to the resistant material, compare in the castable mode of wrapping up in annular alloy steel structure bottom, can reduce the load that the resistant material received, the phenomenon that the resistant material can not appear droing.
Specifically, the protective layer 30 includes a side wall protective layer 31 and a bottom wall protective layer 32, the side wall protective layer 31 is disposed on the side wall of the cylinder wall unit 11, the bottom wall protective layer 32 is disposed on the bottom wall of the cylinder wall unit 11, and the outer surface of the bottom wall protective layer 32 is a curved surface. By setting the outer surface of the bottom wall protection layer 32 to be a curved surface, the wear resistance of the protection layer 30 can be improved, and the protection layer 30 can be further prevented from being worn by lime materials. In the present embodiment, the side wall protection layer 31 is made of mullite brick, and the bottom wall protection layer 32 is made of silicon nitride bonded silicon carbide brick. Also, in order to further enhance the protective effect of the protective layer 30, the side wall protective layer 31 near the bottom of the cylinder wall unit 11 is also made of mullite brick.
In the present embodiment, the water cooling passage 20 and the cylinder wall unit 11 are integrally formed, so that the leakage of the cooling medium can be avoided. And, adopt integrated into one piece's mode, be convenient for process cylinder wall unit 11. In the present embodiment, the cylinder wall unit 11 is cast by cast iron or cast steel. In other embodiments, water-cooled pipes may be provided in the cylinder wall unit 11, and the cooling medium may be circulated through the water-cooled pipes.
The cylinder body 10 is in an annular structure, and a plurality of cylinder wall units 11 are sequentially spliced in the circumferential direction to form the cylinder body 10. Specifically, the number of the cylinder wall units 11 may be selected according to the diameter of the cylinder 10. When the diameter of the cylinder body 10 needs to be increased, the number of the cylinder wall units 11 can be increased, and when the diameter of the cylinder body 10 needs to be reduced, the number of the cylinder wall units 11 can be reduced, and the size setting of the cylinder body 10 is more flexible. Specifically, the inner side and the outer side of the cylinder body 10 are both provided with the protective layer 30, so that the cylinder body 10 can be prevented from being worn by lime materials, and structural damage of the cylinder body 10 is avoided.
As shown in fig. 5, a further embodiment of the present invention provides a lime kiln comprising a kiln shell 60 and a water-cooled hearth 70, the water-cooled hearth 70 being a water-cooled hearth provided as described above. Wherein the kiln shell 60 comprises an upper kiln shell 61 and a lower kiln shell 62, a water-cooled hearth 70 is arranged in the kiln shell 60, and the water-cooled hearth 70 is positioned between the upper kiln shell 61 and the lower kiln shell 62. Specifically, the water-cooled hearth 70 is connected to the upper kiln shell 61 and the lower kiln shell 62, respectively, by a connecting structure 80. In the present embodiment, the connection structure 80 includes a first connection portion 81 and a second connection portion 82, the water-cooled hearth 70 is connected to the upper kiln shell 61 through the first connection portion 81, and the water-cooled hearth 70 is connected to the lower kiln shell 62 through the second connection portion 82.
Wherein, the first connecting part 81 protrudes from the upper end surface of the water-cooled hearth 70, and the second connecting part 82 protrudes from the side wall of the water-cooled hearth 70. Specifically, the first connection portion 81 is adapted to the shape and size of the bottom of the upper kiln shell 61, and the first connection portion 81 is abutted against the bottom of the upper kiln shell 61 and then fixed by welding. Specifically, the second connection portion 82 has a lapping boss, the lapping boss is lapped on the upper end face of the lower kiln shell 62, and the shape and size of the second connection portion 82 are adapted to the shape and size of the top of the lower kiln shell 62. In the present embodiment, the water-cooled hearth 70 is overlapped with the lower kiln shell 62 by the second connecting portion 82, is abutted against the upper kiln shell 61 by the first connecting portion 81, and is further fixed by welding.
In this embodiment, the lime kiln further includes a cooling tower, a connecting pipeline and a water pump assembly, the water-cooled hearth 70 is connected with the cooling tower through the connecting pipeline, the water pump assembly is disposed on the connecting pipeline, the cooling tower is utilized to exchange heat with the cooling medium, and the water pump assembly is utilized to drive the cooling medium to circulate among the components, so that the heat exchange circulation of the device is realized. Specifically, the water pump assembly comprises a water feed pump and a water return pump, wherein the water feed pump is communicated with the inlet of the water cooling channel 20, and the water return pump is communicated with the outlet of the water cooling channel 20.
The device provided by the embodiment has the following beneficial effects:
(1) The water cooling effect is better than that of air cooling, so that the service lives of the cylinder body and the refractory material can be prolonged;
(2) The machining precision of the casting piece is high, the structural reliability of the hearth is high, and the condition that the cooling medium is leaked does not exist;
(3) All the refractory materials are installed in a brick embedding mode, and are firmly fixed, so that the phenomenon that the refractory materials fall off does not exist;
(4) The brick (silicon nitride combined with silicon carbide brick) is used for replacing the bottom casting material, and meanwhile, the brick surface adopts an arc-shaped design, so that the wear resistance is strong, and the service life of the refractory material can be greatly prolonged.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A water cooled hearth for a lime kiln, the water cooled hearth comprising:
a cylinder body (10) provided with a plurality of cylinder wall units (11), wherein the cylinder wall units (11) are spliced to form the cylinder body (10);
The water cooling channel (20) is arranged in the cylinder wall unit (11), and a cooling medium flows into the water cooling channel (20) and is used for cooling the cylinder body (10);
The protective layer (30) is arranged on the outer surface of the cylinder wall unit (11) through a plug-in structure, a plug-in groove (40) is formed in one of the protective layer (30) and the cylinder wall unit (11), a plug-in boss (50) is formed in the other one of the protective layer (30) and the cylinder wall unit (11), and the plug-in groove (40) and the plug-in boss (50) are matched to form the plug-in structure;
the cylinder wall unit (11) is provided with a plurality of inserting grooves (40), each inserting groove (40) is a dovetail groove, the shape and the size of each inserting boss (50) are matched with those of each inserting groove (40), the protective layer (30) is formed by a plurality of refractory materials, and the refractory materials are sequentially inserted into the dovetail grooves.
2. The water-cooled hearth according to claim 1, wherein the water-cooled channel (20) includes a plurality of horizontal sections (21) and a plurality of curved sections (22), adjacent two of the horizontal sections (21) are connected by one of the curved sections (22), and the plurality of horizontal sections (21) are arranged at intervals in a vertical direction.
3. The water-cooled hearth according to claim 2, characterized in that the water-cooled channel (20) further comprises a first vertical section (23) and a second vertical section (24), the first vertical section (23) and the second vertical section (24) are located at two sides of the cylinder wall unit (11), respectively, the first vertical section (23) is communicated with the horizontal section (21) of the head end, the second vertical section (24) is communicated with the horizontal section (21) of the tail end, an inlet of the water-cooled channel (20) is arranged at an end of the first vertical section (23), and an outlet of the water-cooled channel (20) is arranged at an end of the second vertical section (24).
4. The water-cooled hearth of claim 1, characterized in that said protective layer (30) comprises a side wall protective layer (31) and a bottom wall protective layer (32), said side wall protective layer (31) being provided on a side wall of said cylinder wall unit (11), said bottom wall protective layer (32) being provided on a bottom wall of said cylinder wall unit (11), an outer surface of said bottom wall protective layer (32) being a curved surface.
5. The water-cooled hearth according to claim 1, characterized in that the water-cooled channel (20) and the cylinder wall unit (11) are of an integrally formed structure.
6. The water-cooled hearth according to claim 1, characterized in that the cylinder block (10) is of an annular structure, and a plurality of the cylinder wall units (11) are sequentially spliced in the circumferential direction to form the cylinder block (10).
7. A lime kiln, the lime kiln comprising:
a kiln shell (60) comprising an upper kiln shell (61) and a lower kiln shell (62);
A water-cooled hearth (70), the water-cooled hearth (70) being connected to the upper kiln shell (61) and the lower kiln shell (62) respectively by a connecting structure (80), the water-cooled hearth (70) being a water-cooled hearth as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911136035.7A CN110894143B (en) | 2019-11-19 | 2019-11-19 | Water-cooled hearth for lime kiln and lime kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911136035.7A CN110894143B (en) | 2019-11-19 | 2019-11-19 | Water-cooled hearth for lime kiln and lime kiln |
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| CN110894143A CN110894143A (en) | 2020-03-20 |
| CN110894143B true CN110894143B (en) | 2024-06-28 |
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| CN201911136035.7A Active CN110894143B (en) | 2019-11-19 | 2019-11-19 | Water-cooled hearth for lime kiln and lime kiln |
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| CN114835474B (en) * | 2022-05-27 | 2023-03-10 | 营口丰华耐火材料有限公司 | Lightweight hanging brick for cement kiln grate cooler and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151719A (en) * | 2017-06-01 | 2017-09-12 | 佘云锋 | A kind of blast furnace crucibe |
| CN211497404U (en) * | 2019-11-19 | 2020-09-15 | 北京晋鼎能源科技有限责任公司 | Water-cooled hearth for lime kiln and lime kiln |
-
2019
- 2019-11-19 CN CN201911136035.7A patent/CN110894143B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151719A (en) * | 2017-06-01 | 2017-09-12 | 佘云锋 | A kind of blast furnace crucibe |
| CN211497404U (en) * | 2019-11-19 | 2020-09-15 | 北京晋鼎能源科技有限责任公司 | Water-cooled hearth for lime kiln and lime kiln |
Non-Patent Citations (1)
| Title |
|---|
| 麦尔兹并流式石灰窑悬挂缸的设计及应用;焦剑锋等;《工程建设与设计》(第S1期);第33-35页 * |
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| Publication number | Publication date |
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| CN110894143A (en) | 2020-03-20 |
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