CN114166012A - Central structure of high-yield shaft kiln - Google Patents
Central structure of high-yield shaft kiln Download PDFInfo
- Publication number
- CN114166012A CN114166012A CN202111634404.2A CN202111634404A CN114166012A CN 114166012 A CN114166012 A CN 114166012A CN 202111634404 A CN202111634404 A CN 202111634404A CN 114166012 A CN114166012 A CN 114166012A
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- Prior art keywords
- steel pipe
- annular
- cooling air
- main steel
- shaft kiln
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 85
- 239000010959 steel Substances 0.000 claims abstract description 85
- 238000001816 cooling Methods 0.000 claims abstract description 55
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 239000011241 protective layer Substances 0.000 claims abstract description 15
- 238000009987 spinning Methods 0.000 claims abstract description 9
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 claims description 12
- 239000011449 brick Substances 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 20
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/12—Shells or casings; Supports therefor
- F27B1/14—Arrangements of linings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/20—Arrangements of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/21—Arrangements of devices for discharging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/24—Cooling arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention relates to a central structure of a high-yield shaft kiln, which is arranged at the central position of the shaft kiln; comprises a central cylinder, an upper supporting component, a distributor and an annular discharging device; the central cylinder body consists of a main steel pipe, a cooling air pipeline, a spinning disk and a fireproof protective layer; the main steel pipe, the cooling air pipeline, the distributor and the annular discharging device are all coaxially arranged with the shaft kiln; the cooling air pipeline is arranged inside the main steel pipe, and a rotational flow sheet is arranged in an annular space between the cooling air pipeline and the main steel pipe; the central cylinder is arranged in the kiln chamber, so that materials in the kiln are heated more uniformly; the central cylinder body is cooled by cooling air, a fire-resistant protective layer is arranged on the outer side of the central cylinder body, the upper end of the central cylinder body is supported by the upper supporting component, and the distributor is matched with the distributor, so that the impact of materials entering the kiln and the erosion of high temperature in the kiln can be effectively prevented, and the integral structure is more stable.
Description
Technical Field
The invention relates to the technical field of shaft kilns, in particular to a central structure of a high-yield shaft kiln.
Background
At present, the industrial kiln gradually develops in a large-scale direction. As the kiln types continue to grow, the design and use of shaft kilns with larger diameter circular chambers have met with new problems and challenges. As the inner space of the kiln chamber of the shaft kiln is larger, when air is fed along the circumferential direction of the kiln, the distribution of the air along the cross section direction of materials in the kiln is very uneven, and the combustion of fuel at the central part of the kiln and the heat exchange strength between gas and the materials are slightly lower than those near the kiln wall, so that the calcination of raw materials is uneven, the fuel consumption is large and the air consumption coefficient of waste gas is increased.
In order to reduce the deviation of air flow inside the shaft kiln chamber, people try to arrange a cylinder body at the central part of the kiln chamber to occupy the material space. However, the arrangement of the cylinder body at the central part of the kiln chamber needs to solve the following problems:
1) only the steel pipe is used as the support of the central cylinder body, so that the high temperature at the central position of the shaft kiln chamber is difficult to resist (the steel pipe is easy to soften and deform);
2) the shaft kiln is fed from the top of a kiln chamber, materials falling from the upper part of the shaft kiln can impact a central cylinder and a supporting structure of the central cylinder, and long-term rigid collision can finally cause damage to the central cylinder and the supporting structure of the central cylinder;
3) the height-diameter ratio of the central cylinder is 12: 1 above, if the upper and lower ends are not fixed reasonably, the problem of deviation or inclination is easy to occur.
The invention aims to solve the problems, breaks through the bottleneck of the shaft kiln in the process of large-scale development, and a new step is arranged on the shaft kiln with the large-diameter circular kiln chamber.
Disclosure of Invention
The invention provides a central structure of a high-yield shaft kiln.A central cylinder is arranged in a kiln chamber, so that materials in the kiln are heated more uniformly; the central cylinder body is cooled by cooling air, a fire-resistant protective layer is arranged on the outer side of the central cylinder body, the upper end of the central cylinder body is supported by the upper supporting component, and the distributor is matched with the distributor, so that the impact of materials entering the kiln and the erosion of high temperature in the kiln can be effectively prevented, and the integral structure is more stable.
In order to achieve the purpose, the invention adopts the following technical scheme:
a central structure of a high-yield shaft kiln is arranged at the central position of the shaft kiln; comprises a central cylinder, an upper supporting component, a distributor and an annular discharging device; the central cylinder body consists of a main steel pipe, a cooling air pipeline, a spinning disk and a fireproof protective layer; the main steel pipe, the cooling air pipeline, the distributor and the annular discharging device are all coaxially arranged with the shaft kiln; the cooling air pipeline is arranged inside the main steel pipe, and a rotational flow sheet is arranged in an annular space between the cooling air pipeline and the main steel pipe; the upper end of the main steel pipe extends to the upper part of the cooling air pipeline, and a baffle is arranged above the cooling air pipeline in the main steel pipe; the lower end of the cooling air pipeline extends to the lower part of the main steel pipe; the top end of the main steel pipe is connected with the inner wall of the shaft kiln through an upper supporting assembly, the distributor is arranged above the upper supporting assembly, and the bottom of the main steel pipe is provided with an annular discharging device; the bottom end of the cooling air pipeline is provided with a cooling air inlet; the fire-resistant protective layer is arranged outside the main steel pipe.
The main body steel pipe and the cooling air pipeline are both made of corrosion-resistant seamless steel pipes.
The spinning disk is composed of a plurality of helical blades which are spirally arranged along the axial direction of the cooling air pipeline.
The upper supporting component consists of an annular supporting seat, a supporting beam and a supporting seat; the annular supporting seats are arranged on the outer side of the main steel pipe, a plurality of supporting seats are uniformly arranged on the inner wall of the shaft kiln along the circumferential direction at corresponding heights, and each supporting seat is connected with the annular supporting seat through a corresponding supporting beam; each support beam is arranged along the radial direction of the main steel pipe.
The distributor is a circular truncated cone distributor; consists of a distributor body and a plurality of damping rings; the distributor body is a circular truncated cone-shaped structure consisting of a conical cylinder and a top plate, and the diameter of the bottom of the conical cylinder is larger than that of the top of the conical cylinder; the plurality of damping rings are arranged on the outer side of the conical cylinder body along the height direction; the damping ring is made by annular steel sheet, and the vertical setting of annular steel sheet, the bottom of annular steel sheet and the outer wall fixed connection of conical barrel are equipped with polylith deep floor between the inboard of annular steel sheet and the outer wall of conical barrel.
The annular discharging device consists of an annular bottom plate and an annular enclosing plate; the annular bottom plate is fixedly connected with the bottom end of the main steel pipe, the outer side of the annular bottom plate is provided with a plurality of layers of horn-shaped annular enclosing plates, and air outlets are formed between the annular enclosing plates.
The refractory protective layer is formed by building refractory bricks, at least 3 layers of refractory bricks are built from inside to outside, and the outermost refractory bricks have an interlocking structure.
Compared with the prior art, the invention has the beneficial effects that:
1) the materials in the kiln chamber are distributed between the outer wall of the central cylinder and the inner wall of the kiln chamber, so that the materials in the kiln chamber can be uniformly heated along the cross section direction, the raw burning rate and the overburning rate of a finished product are greatly reduced, and the product quality is improved;
2) the central cylinder body adopts a main steel pipe as a main support, a fireproof protective layer is arranged outside the central cylinder body, the weight of the central cylinder body is mainly concentrated at the central position of a shaft kiln chamber, and a large shaft kiln is mostly in a thin and high shape, so that the structure is favorable for the center of gravity of the shaft kiln to be more stable;
3) the upper end of the central cylinder is supported by the upper supporting component, and a novel distributor is arranged above the central cylinder, so that the impact on the upper supporting part and the central cylinder can be effectively reduced, and the service life of the central cylinder is prolonged;
4) the inside of the central cylinder body adopts an air cooling structure, so that the main steel pipe is prevented from softening and deforming at high temperature in the kiln; the cooling air after heat exchange with the main steel pipe can be used as combustion-supporting air to enter the kiln from the bottom of the kiln chamber to participate in combustion in the kiln, so that the temperature of the combustion-supporting air in the kiln is increased, and the energy-saving effect is achieved.
Drawings
FIG. 1 is a schematic view of the central structure of a high-throughput shaft kiln according to the present invention.
FIG. 2 is an enlarged view of a portion of the central structure of a high throughput shaft kiln according to the present invention.
Fig. 3 is a schematic (partial) view of the arrangement of the spinning disk according to the embodiment of the present invention.
In the figure: 1. main steel pipe 2, cooling air pipeline 3, spinning disk 4, fire-resistant protective layer 5, annular support seat 6, support beam 7, support seat 8, distributor 9, shaft kiln 10, annular discharging device
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1 and fig. 2, the central structure of the high-yield shaft kiln is arranged at the central position of the shaft kiln; comprises a central cylinder, an upper supporting component, a distributor 8 and an annular discharging device 10; the central cylinder body consists of a main steel pipe 1, a cooling air pipeline 2, a spinning disk 3 and a fireproof protective layer 4; the main steel pipe 1, the cooling air pipeline 2, the distributor 8 and the annular discharging device 10 are all coaxially arranged with the shaft kiln 9; the cooling air pipeline 2 is arranged inside the main steel pipe 1, and the rotational flow sheets 3 are arranged in an annular space between the cooling air pipeline 2 and the main steel pipe 1; the upper end of the main steel pipe 1 extends to the upper part of the cooling air pipeline 2, and a baffle is arranged above the cooling air pipeline 2 in the main steel pipe 1; the lower end of the cooling air pipeline 2 extends to the lower part of the main steel pipe 1; the top end of the main steel pipe 1 is connected with the inner wall of the shaft kiln 9 through an upper supporting component, the distributor 8 is arranged above the upper supporting component, and the bottom of the main steel pipe 1 is provided with an annular discharging device 10; the bottom end of the cooling air pipeline 2 is provided with a cooling air inlet; the fire-resistant protective layer 4 is arranged outside the main steel pipe 1.
The main steel pipe 1 and the cooling air pipeline 2 are both made of corrosion-resistant seamless steel pipes.
As shown in fig. 3, the swirler 3 is composed of a plurality of helical blades spirally arranged along the axial direction of the cooling air duct 2.
As shown in fig. 2, the upper support assembly is composed of an annular support base 5, a support beam 6 and a support base 7; the annular supporting seat 5 is arranged on the outer side of the main steel pipe 1, a plurality of supporting seats 7 are uniformly arranged on the inner wall of the shaft kiln 9 along the circumferential direction at corresponding heights, and each supporting seat 7 is connected with the annular supporting seat 5 through a corresponding supporting beam 6; each support beam 6 is arranged in the radial direction of the main steel pipe 1.
The distributor 8 is a circular truncated cone distributor; consists of a distributor body and a plurality of damping rings; the distributor body is a circular truncated cone-shaped structure consisting of a conical cylinder and a top plate, and the diameter of the bottom of the conical cylinder is larger than that of the top of the conical cylinder; the plurality of damping rings are arranged on the outer side of the conical cylinder body along the height direction; the damping ring is made by annular steel sheet, and the vertical setting of annular steel sheet, the bottom of annular steel sheet and the outer wall fixed connection of conical barrel are equipped with polylith deep floor between the inboard of annular steel sheet and the outer wall of conical barrel.
The annular discharging device 10 consists of an annular bottom plate and an annular enclosing plate; annular bottom plate and main part steel pipe 1's bottom fixed connection, the annular bounding wall of multilayer loudspeaker form is established in the outside of annular bottom plate, all is equipped with the air exit between each layer annular bounding wall.
The refractory protective layer 4 is formed by building refractory bricks, at least 3 layers of refractory bricks are built from inside to outside, and the outermost refractory bricks have an interlocking structure.
The following examples are carried out on the premise of the technical scheme of the invention, and detailed embodiments and specific operation processes are given, but the scope of the invention is not limited to the following examples.
[ examples ] A method for producing a compound
As shown in fig. 1-3, in the present embodiment, the central structure of the shaft kiln includes a main steel pipe 1, a cooling air pipe 2, a vortex sheet 3, a refractory protective layer 4, an annular support base 5, a support beam 6, a support base 7, a distributor 8, and an annular discharging device 10.
The cooling air pipeline 2 is located at the innermost part of the central cylinder, and the main body steel pipe 1 is sleeved on the outer side of the cooling air pipeline 2. Between cooling air pipeline 2 and main part steel pipe 1, from top to bottom, along the spiral line direction welding 4 spinning disks 3 of being made by the steel sheet.
The lower end of the main steel pipe 1 is welded and fixed with an annular discharging device 10, the outer side of the upper end of the main steel pipe 1 is provided with an annular support 5, a support beam 6 is 8H-shaped steel, and one end of the support beam 6 close to a shaft kiln 9 kiln shell is hinged and fixed with a support seat 7 on the inner wall of the kiln shell. The notch of one side was towards the top when supporting beam 6 made by H shaped steel was installed, and the purpose is to accept the material that falls from the kiln roof, makes partly material save and forms the material pad in the notch of H shaped steel, avoids the impact force direct action of material whereabouts on supporting beam 6.
A round table shaped distributor 8 made of steel plate is installed above the upper supporting component. Three layers of damping rings are welded on the periphery of the conical cylinder body, and a small amount of materials can be stored in a space between the damping rings and the conical cylinder body; when feeding from the top of the kiln, falling materials firstly contact with the materials in the damping rings, so that the impact force of the falling materials is prevented from directly acting on the material distributor 8.
The central cylinder adopts the main steel pipe 1 as a main support, so that the strength of the whole structure is ensured. 3 layers of refractory bricks are built on the outer side of the main steel pipe 1, so that the main steel pipe 1 can be protected from melting deformation due to high temperature in the kiln chamber. Outmost resistant firebrick adopts the mode of mutual interlock to build by laying bricks or stones, forms interlocking structure, builds firm overall structure after accomplishing, prevents to lead to resistant firebrick to drop because of factors such as the washing away of material.
The main steel pipe 1 is easily deformed due to heat accumulation inside the central cylinder, and in order to solve the problem, the air cooling structure is arranged inside the central cylinder. The cooling air passes through the cooling air duct 2 from bottom to top, and performs primary heat exchange with the hot air inside the main steel pipe 1 during the traveling process. The heated cooling air enters an annular space between the cooling air pipeline 2 and the main steel pipe 1 from an outlet at the upper part of the cooling air pipeline 2 (a baffle plate is arranged above the outlet to enable the airflow direction to turn back and downwards), and the cooling air is directly contacted with the inner wall of the main steel pipe 1 to realize secondary heat exchange with the inner wall of the main steel pipe 1; thereby achieving the purpose of cooling the central cylinder. The cooling air after heat exchange enters the kiln through the annular discharging device 10 at the bottom of the kiln chamber, can be used as combustion-supporting air to participate in combustion in the kiln, improves the temperature of the combustion-supporting air in the kiln, and thus, the energy-saving effect is achieved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A central structure of a high-yield shaft kiln is arranged at the central position of the shaft kiln; it is characterized by comprising a central cylinder, an upper supporting component, a distributor and an annular discharging device; the central cylinder body consists of a main steel pipe, a cooling air pipeline, a spinning disk and a fireproof protective layer; the main steel pipe, the cooling air pipeline, the distributor and the annular discharging device are all coaxially arranged with the shaft kiln; the cooling air pipeline is arranged inside the main steel pipe, and a rotational flow sheet is arranged in an annular space between the cooling air pipeline and the main steel pipe; the upper end of the main steel pipe extends to the upper part of the cooling air pipeline, and a baffle is arranged above the cooling air pipeline in the main steel pipe; the lower end of the cooling air pipeline extends to the lower part of the main steel pipe; the top end of the main steel pipe is connected with the inner wall of the shaft kiln through an upper supporting assembly, the distributor is arranged above the upper supporting assembly, and the bottom of the main steel pipe is provided with an annular discharging device; the bottom end of the cooling air pipeline is provided with a cooling air inlet; the fire-resistant protective layer is arranged outside the main steel pipe.
2. The central structure of a high-throughput shaft kiln according to claim 1, wherein said main steel pipe and said cooling air duct are made of corrosion-resistant seamless steel pipe.
3. The central structure of a high-throughput shaft kiln according to claim 1, wherein said spinning disk is composed of a plurality of helical blades spirally arranged in the axial direction of the cooling air duct.
4. The central structure of a high productivity shaft kiln according to claim 1, wherein the upper support assembly is composed of an annular support base, a support beam and a support base; the annular supporting seats are arranged on the outer side of the main steel pipe, a plurality of supporting seats are uniformly arranged on the inner wall of the shaft kiln along the circumferential direction at corresponding heights, and each supporting seat is connected with the annular supporting seat through a corresponding supporting beam; each support beam is arranged along the radial direction of the main steel pipe.
5. The central structure of a high-throughput shaft kiln according to claim 1, wherein said distributor is a circular truncated cone distributor; consists of a distributor body and a plurality of damping rings; the distributor body is a circular truncated cone-shaped structure consisting of a conical cylinder and a top plate, and the diameter of the bottom of the conical cylinder is larger than that of the top of the conical cylinder; the plurality of damping rings are arranged on the outer side of the conical cylinder body along the height direction; the damping ring is made by annular steel sheet, and the vertical setting of annular steel sheet, the bottom of annular steel sheet and the outer wall fixed connection of conical barrel are equipped with polylith deep floor between the inboard of annular steel sheet and the outer wall of conical barrel.
6. The central structure of a high-throughput shaft kiln according to claim 1, wherein said annular discharging means is composed of an annular bottom plate and an annular surrounding plate; the annular bottom plate is fixedly connected with the bottom end of the main steel pipe, the outer side of the annular bottom plate is provided with a plurality of layers of horn-shaped annular enclosing plates, and air outlets are formed between the annular enclosing plates.
7. The central structure of a high-throughput shaft kiln according to claim 1, wherein said refractory protective layer is constructed of refractory bricks, the refractory bricks are constructed in at least 3 layers from the inside to the outside, and the outermost refractory bricks have an interlocking structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111634404.2A CN114166012A (en) | 2021-12-29 | 2021-12-29 | Central structure of high-yield shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111634404.2A CN114166012A (en) | 2021-12-29 | 2021-12-29 | Central structure of high-yield shaft kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114166012A true CN114166012A (en) | 2022-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111634404.2A Pending CN114166012A (en) | 2021-12-29 | 2021-12-29 | Central structure of high-yield shaft kiln |
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| Country | Link |
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| CN (1) | CN114166012A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2540604Y (en) * | 2002-05-01 | 2003-03-19 | 王英坡 | Underground double-pipe geo-source heat exchanger |
| CN103557688A (en) * | 2013-10-30 | 2014-02-05 | 中冶焦耐工程技术有限公司 | Hollow tube body for vertical kiln, material distributing device and use method |
| CN103601376A (en) * | 2013-11-18 | 2014-02-26 | 中冶焦耐工程技术有限公司 | Sleeve type double-hearth shaft kiln |
| CN208475711U (en) * | 2018-05-09 | 2019-02-05 | 杭州众来新能源科技有限公司 | Air-soil heat exchange energy-storage tube and heat accumulation type heat exchanger tube, cold-storage type heat exchanger tube |
| CN216745374U (en) * | 2021-12-29 | 2022-06-14 | 中冶焦耐(大连)工程技术有限公司 | Central structure of high-yield shaft kiln |
-
2021
- 2021-12-29 CN CN202111634404.2A patent/CN114166012A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2540604Y (en) * | 2002-05-01 | 2003-03-19 | 王英坡 | Underground double-pipe geo-source heat exchanger |
| CN103557688A (en) * | 2013-10-30 | 2014-02-05 | 中冶焦耐工程技术有限公司 | Hollow tube body for vertical kiln, material distributing device and use method |
| CN103601376A (en) * | 2013-11-18 | 2014-02-26 | 中冶焦耐工程技术有限公司 | Sleeve type double-hearth shaft kiln |
| CN208475711U (en) * | 2018-05-09 | 2019-02-05 | 杭州众来新能源科技有限公司 | Air-soil heat exchange energy-storage tube and heat accumulation type heat exchanger tube, cold-storage type heat exchanger tube |
| CN216745374U (en) * | 2021-12-29 | 2022-06-14 | 中冶焦耐(大连)工程技术有限公司 | Central structure of high-yield shaft kiln |
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