CN217083334U - Vertical cooling furnace - Google Patents
Vertical cooling furnace Download PDFInfo
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- CN217083334U CN217083334U CN202220710969.8U CN202220710969U CN217083334U CN 217083334 U CN217083334 U CN 217083334U CN 202220710969 U CN202220710969 U CN 202220710969U CN 217083334 U CN217083334 U CN 217083334U
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- material distributing
- cooling furnace
- vertical cooling
- branch air
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Abstract
The utility model discloses a vertical cooling furnace, which structurally comprises a vertical cooling furnace body, wherein the upper end of the vertical cooling furnace body is a feeding area, and the feeding area is provided with a feeding hopper; an air outlet is formed in the side edge of the feeding area; a material distributing device is arranged at the lower part of the feeding area, a strip-shaped grating component is arranged below the material distributing device, and a material stacking layer is arranged below the strip-shaped grating component; the bottom of the stacking layer is provided with a hood group assembly; and a discharge hole is formed below the blast cap group component. The device avoids the phenomena of material throwing classification and material smashing and compaction in the blanking process, and realizes balanced and decelerated blanking; the bottom cooling air distribution device realizes the optimal distribution of cooling air through the air cap groups arranged in an array mode, thereby improving the heat exchange efficiency of gas-solid materials in the vertical cooling furnace chamber.
Description
Technical Field
The utility model relates to a metallurgical industry waste heat recovery process equipment field, in particular to vertical cooling furnace.
Background
At present, metallurgical mineral aggregate contains a large amount of waste heat after being sintered, and the waste heat is usually recovered by adopting a gas medium. The existing vertical cooling furnace recovery technology is too simple, such as: a single large blast cap is arranged at the center of the bottom of the vertical cooling furnace, and then circulating cooling air is blown into the blast cap to take away the heat of the mineral aggregate.
The waste heat recovery efficiency of above-mentioned wind mode is not high, the reason lies in that the granularity gap of mineral aggregate is great in the vertical cooling furnace, the porosity diverse that mineral aggregate piles up, make the interior sintering deposit particle distribution segregation of stove serious, large granule sintering deposit tends to furnace chamber boundary wall and corner department distribution, and the tiny particle material then tends to furnace chamber center department distribution, it is unbalanced to cause sintering deposit particle material gas permeability, the single hood that furnace chamber center was arranged hardly guarantees that the cooling air is piled up regionally through whole mineral aggregate uniformly, so, waste heat recovery efficiency is low partially.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a vertical cooling furnace, which prevents the phenomena of material throwing classification and material smashing and compaction in the blanking process and realizes balanced and decelerated blanking; the bottom cooling air distribution device realizes the optimal distribution of cooling air through the air cap groups arranged in an array mode, thereby improving the heat exchange efficiency of gas-solid materials in the vertical cooling furnace chamber.
The utility model provides a technical scheme that its technical problem adopted is: a vertical cooling furnace structurally comprises a vertical cooling furnace body, wherein the upper end of the vertical cooling furnace body is a feeding area, and the feeding area is provided with a feeding hopper; an air outlet is formed in the side edge of the feeding area; a material distributing device is arranged at the lower part of the feeding area, a strip-shaped grating component is arranged below the material distributing device, and a material stacking layer is arranged below the strip-shaped grating component; the bottom of the stacking layer is provided with a hood group assembly; and a discharge hole is formed below the blast cap group component.
Furthermore, the material distributing device comprises a material distributing throat, a material distributing conical body and a material distributing inclined pipe, the upper end of the material distributing throat is connected with the discharge end of the feed hopper, the material distributing conical body is arranged at the lower end of the material distributing throat, the material distributing inclined pipe corresponding to the material distributing conical body is arranged on the outer side wall of the lower portion of the material distributing throat, a feed inlet of the material distributing inclined pipe is communicated with an inner cavity of the material distributing throat, and a discharge outlet of the material distributing inclined pipe is communicated with a cavity of the furnace body.
Furthermore, the conical body is provided with four faces, the gradient of each face is 45-65 degrees, the four faces of the conical body respectively correspond to one blanking inclined tube, and the inclination angle of each blanking inclined tube is the same as that of the conical body.
Further, the bar-shaped grating component comprises bar-shaped gratings and bar-shaped grating supporting beams, the bar-shaped grating supporting beams are connected with the inner wall of the furnace body, and the bar-shaped gratings are fixedly connected with the bar-shaped grating supporting beams.
Further, the distance between the strip-shaped grids is 50 mm-100 mm, and the height is 50 mm-120 mm.
Furthermore, the blast cap group component comprises blast caps, longitudinal branch air pipes and transverse branch air pipes, the longitudinal branch air pipes and the transverse branch air pipes are arranged in a crossed manner, two ends of each of the longitudinal branch air pipes and the transverse branch air pipes are respectively connected with the side wall of the inner cavity of the furnace body, and the blast caps are arranged at the crossed points of the longitudinal branch air pipes and the transverse branch air pipes.
Furthermore, the top of the blast cap is in a conical structure, and the cone angle of the blast cap is set to be 45-65 degrees.
Furthermore, the lower part of the blast cap is used for air inlet and the upper part is used for air outlet, the lower part air inlet end is communicated with the inner cavity of the longitudinal branch air pipe and the transverse branch air pipe, and the bottom of the conical structure at the upper part of the blast cap is provided with a plurality of air outlet holes.
The utility model has the advantages that:
the utility model arranges the cone and four material distributing pipes at the feeding end of the top of the furnace body, and then matches with the material distributing bar-shaped grid at the lower part, thereby preventing the throwing and falling phenomena of large-particle mineral aggregate, and realizing balanced material distribution and loose material distribution in the cavity of the vertical cooling furnace; the bottom cooling air distribution device adopts a mode of arranging the blast cap groups in an array manner to realize multi-point air outlet, can obviously improve the heat exchange effect of cooling air and thermal mineral aggregate, and prevents the short circuit phenomenon of the cooling air, thereby improving the heat exchange effect; and under the condition of not changing the cavity structure of the vertical cooling furnace, the smooth blanking characteristic of the vertical cavity can be kept, and when the vertical cooling furnace is used for the existing engineering transformation, the transformation workload of the cavity is small.
Because the strip-shaped grating is adopted for material distribution and material dredging, the phenomena of material throwing and compaction in the cavity are prevented, and the distribution balance and the looseness of the thermal-state mineral aggregate in the furnace are better. Meanwhile, the contact effect of the hot material at the air outlet and the cooling air is enhanced;
the blast cap group arranged in an array mode enables the distribution of cooling air to be more balanced, improves the contact range and improves the gas-solid heat exchange effect.
Drawings
FIG. 1 is an overall structure diagram of the present invention;
FIG. 2 is a sectional view taken along line A-A;
FIG. 3 is a cross-sectional view B-B;
FIG. 4 is a cross-sectional view taken along line C-C.
In the figure:
1 vertical cooling furnace body, 2 air outlets, 3 discharge hoppers, 4 feed hoppers, 5 distribution throats, 6 distribution cones, 7 distribution inclined pipes, 8 strip-shaped grids, 9 strip-shaped grid supporting beams, 10 cavities, 11 blast caps, 12 longitudinal branch blast pipes and 13 transverse branch blast pipes.
Detailed Description
The following detailed description of a vertical cooling furnace according to the present invention will be made with reference to the accompanying drawings. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and techniques are omitted so as to not unnecessarily limit the invention.
As shown in fig. 1 to 4, the utility model discloses a vertical cooling furnace, including vertical cooling furnace body 1, vertical cooling furnace body 1's upper end is the feeding region, and feed inlet upper portion is equipped with feeder hopper 4, and the lower extreme is the discharge gate, and upper end one side of vertical cooling furnace body 1 is equipped with air outlet 2, and the furnace chamber body adopts quadrangle structure, and the furnace chamber wall keeps upright, keeps the mineral aggregate to flow downwards smoothly, gets into out the hopper and discharges, goes out the hopper and will set up viewing aperture, rapping device, temperature measurement point. The lower part of a feed inlet of the inner cavity of the furnace body is provided with a material distribution device, a material stacking layer is arranged below the material distribution device in the cavity of the furnace body, and a hood group assembly is arranged above a discharge outlet at the lower part in the cavity of the furnace body. The top blanking device and the vertical cooling furnace body are mutually coordinated to realize balanced blanking.
The material distributing device comprises a material distributing throat opening 5, a material distributing conical body 6 and a material distributing inclined tube 7, the upper end of the material distributing throat opening 5 is connected with the discharge end of the feed hopper, the material distributing conical body 6 is arranged at the lower end of the material distributing throat opening, the material distributing inclined tube 7 corresponding to the material distributing conical body is arranged on the outer side wall of the lower portion of the material distributing throat opening 5, the feed inlet of the material distributing inclined tube 7 is communicated with the inner cavity of the material distributing throat opening 5, and the discharge outlet of the material distributing inclined tube 7 is communicated with the cavity of the furnace body. The material distribution conical body 6 is provided with four surfaces, the inclination of each surface is 45-65 degrees, preferably 50 degrees, the thermal state mineral aggregate in the receiving hopper can be quickly guided into the four material distribution inclined pipes 7 below, and the flow and the granularity uniformly enter the furnace chamber.
The four surfaces of the conical body respectively correspond to one material distribution inclined pipe 7, and the inclined angle of the material distribution inclined pipe 7 is the same as that of the material distribution conical body 6. The position of the discharge hole of the material distributing inclined pipe 7 is matched with the size of the furnace chamber, the array position of the bottom cooling air cap 11 and the position of the discharge hopper at the bottom of the furnace chamber, so that smooth and balanced blanking is ensured.
The bar-shaped grating component comprises bar-shaped gratings 8 and bar-shaped grating supporting beams 9, the bar-shaped grating supporting beams 9 are connected with the inner wall of the furnace body, and the bar-shaped gratings and the bar-shaped grating supporting beams are fixedly connected. Many bar grid supporting beam are used for stabilizing the grid, prevent to warp, and bar grid supporting beam interval control is in 2 ~ 3m within ranges.
The strip-shaped gratings 8 are made of steel plates with the wall thickness of 6-20 mm and the height of 50-120 mm, and are made of high-strength impact-resistant and abrasion-resistant materials. The plate spacing of the strip-shaped grating 8 is adapted to the maximum particle diameter of the thermal state mineral aggregate and is controlled within the range of 50-100 mm.
The furnace chamber is used for receiving the thermal state mineral aggregate from the material distribution strip-shaped grating to form a stockpile layer with a certain height and uniform coarse and fine particle distribution; the height of the material piling layer is controlled within the range of 3-10 m.
The blast cap group component comprises a blast cap 11, a longitudinal branch air pipe 12 and a transverse branch air pipe 13, wherein the longitudinal branch air pipes 12 and the transverse branch air pipes 13 are arranged in a crossed manner, two ends of each of the longitudinal branch air pipes and the transverse branch air pipes are respectively connected with the side wall of the inner cavity of the furnace body, and the blast caps 11 are arranged at the crossed points of the longitudinal branch air pipes and the transverse branch air pipes.
The top of the blast cap 11 is in a conical structure, and the cone angle of the blast cap is set to be 45-65 degrees, so that the flow and the sliding of the particle materials are facilitated. The blast cap adopts the lower part to enter air and the upper part to give out air, the lower part air inlet end is communicated with the inner cavity of the longitudinal branch air pipe and the transverse branch air pipe, and the bottom of the conical structure at the upper part of the blast cap is provided with a plurality of air outlet holes. The length of a vertical pipe below the blast cap and connected with the longitudinal sub-air pipe and the transverse sub-air pipe is controlled within the range of 0.2-1.0 m and is used as a preheating section of cooling air. Spoilers are arranged inside the pipelines between the blast caps and the longitudinal and transverse sub-air pipes and used for realizing rapid preheating of newly-fed cooling air. The array arrangement of the blast caps forms the optimal matching with the discharge port, so that the optimal heat exchange effect is realized while smooth blanking is ensured.
And the longitudinal and transverse sub-air pipes of the cooling air are arranged at the bottom in the cavity of the vertical cooling furnace and above the discharge hopper and used for conveying the cooling air to the air caps arranged in each array. The longitudinal sub-air pipes and the transverse sub-air pipes are in a shape of a tip and a flat bottom, so that blanking is facilitated, and the air speed is controlled within the range of 6-15 m/s. The blast cap is used for receiving cooling air and guiding the cooling air into the vertical cooling furnace chamber to contact with the thermal state mineral aggregate to obtain waste heat.
The mineral aggregate conveying unit conveys the thermal-state mineral aggregate to a receiving hopper 4 above the vertical cooling furnace body 1, the mineral aggregate respectively enters 4 material-distributing inclined pipes 7 through a feeding throat 5 and a material-distributing conical body 6, and then enters a body furnace chamber 10 through a bar-shaped grating 8. The cooling air which rises from the bottom is contacted with the inside of the furnace chamber, and the cooled cooling air enters the discharging hopper and is transported outside. Wherein, the receiving hopper inlet 4 is connected with the mineral aggregate conveying unit; the outlet of the receiving hopper is connected with the vertical cooling furnace body 1 through a feeding throat 5; the discharge hopper 3 is connected with the lower part of the vertical cooling furnace body 1.
Cooling air flow: the cooling air is sent to a longitudinal sub-air pipe 12 and a transverse sub-air pipe 13 of the vertical cooling furnace through a cooling air main pipe, enters a corresponding air cap 11, then enters the inner cavity of the vertical cooling furnace, exchanges heat with the thermal state mineral aggregate, rises to an air outlet 2, and is discharged out of the system.
The foregoing is merely illustrative of some of the principles of the present invention and the description is not intended to limit the invention to the specific constructions and applications shown, so that all modifications and equivalents that may be utilized are within the scope of the invention.
Other technical features than those described in the specification are known to those skilled in the art.
Claims (8)
1. A vertical cooling furnace structurally comprises a vertical cooling furnace body, wherein the upper end of the vertical cooling furnace body is a feeding area, and the feeding area is provided with a feeding hopper; an air outlet is formed in the side edge of the feeding area; the material-piling machine is characterized in that a material-distributing device is arranged at the lower part of the feeding area, a strip-shaped grating component is arranged below the material-distributing device, and a material-piling layer is arranged below the strip-shaped grating component; the bottom of the stacking layer is provided with a hood group assembly; and a discharge hole is formed below the blast cap group component.
2. The vertical cooling furnace according to claim 1, wherein the material distributing device comprises a material distributing throat, a material distributing conical body and a material distributing inclined tube, the upper end of the material distributing throat is connected with the discharge end of the feed hopper, the material distributing conical body is arranged at the lower end of the material distributing throat, the material distributing inclined tube corresponding to the material distributing conical body is arranged on the outer side wall of the lower part of the material distributing throat, the feed inlet of the material distributing inclined tube is communicated with the inner cavity of the material distributing throat, and the discharge outlet of the material distributing inclined tube is communicated with the cavity of the furnace body.
3. The shaft cooling furnace as claimed in claim 2, wherein the cone has four faces, each face having an inclination of 45 ° to 65 °, and the four faces of the cone correspond to a respective one of the plurality of discharge chutes, and the inclination angle of the discharge chute is the same as the inclination angle of the cone.
4. The vertical cooling furnace as claimed in claim 1, wherein the bar grating assembly comprises bar gratings and bar grating member support beams, the bar grating member support beams are connected to the inner wall of the furnace body, and a plurality of bar gratings are fixedly connected to the bar grating member support beams.
5. The vertical cooling furnace as claimed in claim 4, wherein the plurality of bar-shaped grates have a pitch of 50mm to 100mm and a height of 50mm to 120 mm.
6. The vertical cooling furnace as claimed in claim 1, wherein the air cap group member comprises air caps, longitudinal branch air pipes and transverse branch air pipes, the longitudinal branch air pipes and the transverse branch air pipes are arranged in a crossed manner, both ends of the longitudinal branch air pipes and the transverse branch air pipes are respectively connected with the side walls of the inner cavity of the furnace body, and air caps are arranged at the crossed points of the longitudinal branch air pipes and the transverse branch air pipes.
7. The shaft cooling furnace as claimed in claim 6, wherein the top of the hood is formed in a conical shape, and the cone angle of the hood is set to be 45 ° to 65 °.
8. The vertical cooling furnace as claimed in claim 6, wherein the blast cap is a lower inlet and an upper outlet, the lower inlet is communicated with the inner cavity of the longitudinal branch air duct and the transverse branch air duct, and the conical structure at the upper part of the blast cap is provided with a plurality of outlet holes at the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220710969.8U CN217083334U (en) | 2022-03-29 | 2022-03-29 | Vertical cooling furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220710969.8U CN217083334U (en) | 2022-03-29 | 2022-03-29 | Vertical cooling furnace |
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| Publication Number | Publication Date |
|---|---|
| CN217083334U true CN217083334U (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220710969.8U Active CN217083334U (en) | 2022-03-29 | 2022-03-29 | Vertical cooling furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781714A (en) * | 2024-02-22 | 2024-03-29 | 瀚能(苏州)节能科技有限公司 | Plate-type cooling equipment and waste heat recovery system |
-
2022
- 2022-03-29 CN CN202220710969.8U patent/CN217083334U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781714A (en) * | 2024-02-22 | 2024-03-29 | 瀚能(苏州)节能科技有限公司 | Plate-type cooling equipment and waste heat recovery system |
| CN117781714B (en) * | 2024-02-22 | 2024-05-28 | 瀚能(苏州)节能科技有限公司 | Plate-type cooling equipment and waste heat recovery system |
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