CN216790169U - Cyclone type zinc oxide negative pressure continuous oxidation furnace - Google Patents
Cyclone type zinc oxide negative pressure continuous oxidation furnace Download PDFInfo
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- CN216790169U CN216790169U CN202123163649.XU CN202123163649U CN216790169U CN 216790169 U CN216790169 U CN 216790169U CN 202123163649 U CN202123163649 U CN 202123163649U CN 216790169 U CN216790169 U CN 216790169U
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Abstract
A cyclone zinc oxide negative pressure continuous oxidation furnace comprises an oxidation furnace body, a heat conducting oil coil pipe and a cyclone air pipe combination; the oxidation furnace body is of a double-layer structure, the heat-conducting oil coil is fixedly arranged in an interlayer of the double-layer structure of the oxidation furnace body, and the cyclone air pipe combination is fixedly arranged at the bottom of the oxidation furnace body; the combination of the cyclone air pipes enables zinc steam and air entering the continuous oxidation furnace to be sprayed to the bottom of the continuous oxidation furnace in a rotating airflow mode, so that the purposes of fully mixing the zinc steam and the air and increasing the residence time in the continuous oxidation furnace are achieved, and the full combustion of the metal zinc in the continuous oxidation furnace is ensured; the negative pressure continuous oxidation furnace with the structure has the advantages of small equipment volume and high production efficiency, and greatly improves the production efficiency of zinc oxide on the premise of not increasing the equipment cost, thereby greatly improving the economic benefit of enterprises.
Description
Technical Field
The utility model relates to the technical field of spontaneous combustion environment-friendly zinc oxide production equipment, in particular to a cyclone type zinc oxide negative pressure continuous oxidation furnace.
Background
According to the existing negative-pressure continuous oxidation furnace for producing the spontaneous-combustion environment-friendly zinc oxide, zinc steam and air are directly injected into the continuous oxidation furnace in a vertically upward mode through an air inlet arranged at the bottom of the oxidation furnace, so that the problems of insufficient mixing of the zinc steam and the air and short residence time in the oxidation furnace exist, and the insufficient combustion of metal zinc in the continuous oxidation furnace is easily caused; in order to solve the problem, a method of increasing the volume of the continuous oxidation furnace or reducing the production speed has to be adopted to ensure the sufficient combustion of the metal zinc in the continuous oxidation furnace, thereby causing the increase of the production equipment cost and the reduction of the production efficiency, and further influencing the economic benefit of enterprises.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the background art, the utility model discloses a cyclone zinc oxide negative pressure continuous oxidation furnace, which adopts a structure that a cyclone air pipe combination is arranged at the bottom of the continuous oxidation furnace, so that zinc steam and air entering the continuous oxidation furnace are sprayed to the bottom of the continuous oxidation furnace in a rotating airflow mode, the effects of fully mixing the zinc steam and the air and increasing the residence time in the continuous oxidation furnace are achieved, and the full combustion of metal zinc in the continuous oxidation furnace is ensured.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: a cyclone zinc oxide negative pressure continuous oxidation furnace comprises an oxidation furnace body, a heat conducting oil coil pipe and a cyclone air pipe combination; the oxidation furnace body is of a double-layer structure, the heat conducting oil coil is fixedly arranged in an interlayer of the double-layer structure of the oxidation furnace body, and the cyclone air pipe is fixedly arranged at the bottom of the oxidation furnace body in a combined manner; when the zinc oxide negative pressure continuous oxidation furnace works, zinc fuel gas in the furnace is pumped into the rotary kiln by the air pump, and negative pressure is generated in the continuous oxidation furnace; under the action of negative pressure, zinc steam and air are sprayed to the bottom of the continuous oxidation furnace in a rotating airflow mode through the cyclone air pipe combination, the zinc steam and the air are fully mixed by the rotating airflow to generate mixed gas, and meanwhile, the mixed gas rebounds upwards and rises after touching the bottom of the continuous oxidation furnace, so that the flow path of the mixed gas in the continuous oxidation furnace is increased, the retention time in the continuous oxidation furnace is correspondingly increased, and the full combustion of metal zinc in the continuous oxidation furnace is ensured.
Further, the heat conducting oil coil pipes are provided with a plurality of groups; the heat conducting oil coil pipes are used for guiding out heat generated by the reaction of zinc and oxygen in the continuous oxidation furnace, and the plurality of groups of heat conducting oil coil pipes are used for being connected with different heat exchangers and transmitting the heat to other different equipment.
Further, the cyclone air pipe combination comprises a cyclone air pipe and a heat insulation layer; the cyclone air pipe comprises an air inlet main pipe and a plurality of cyclone air outlet pipes; the top of the main air inlet pipe is fixedly provided with a main air inlet pipe plug, the cyclone air outlet pipes are uniformly and fixedly arranged at the upper part of the main air inlet pipe, and the main air inlet pipe is communicated with the cyclone air outlet pipes; the heat insulation layer is fixedly arranged at the upper part of the main air inlet pipe and outside the cyclone air outlet pipe; the cyclone gas pipe is isolated from high-temperature gas in the continuous oxidation furnace by the heat insulation layer, so that the cyclone gas pipe is prevented from being seriously ablated in a high-temperature environment, and the service life of the cyclone gas pipe combination is prolonged; the main gas main pipe is a main channel for zinc steam and air to enter the continuous oxidation furnace, and the plurality of cyclone gas outlet pipes enable the zinc steam and the air to generate rotary airflow sprayed to the bottom of the continuous oxidation furnace after entering the continuous oxidation furnace.
Further, a main air inlet pipe sealing ring is fixedly arranged at the lower part of the main air inlet pipe, and a heat insulation layer anchoring A is fixedly arranged outside the main air inlet pipe on the upper side of the main air inlet pipe sealing ring; a heat insulation layer anchoring C is fixedly arranged on the outer part of the air inlet main pipe close to the top; a heat insulation layer anchoring B is fixedly arranged outside the cyclone air outlet pipe; the sealing ring of the main pipe ensures the sealing performance of the cyclone air pipe combination and the furnace wall of the continuous oxidation furnace, the heat-insulating layer anchoring A, the heat-insulating layer anchoring B and the heat-insulating layer anchoring C are used for reinforcing the bonding strength of the heat-insulating layer and the cyclone air pipes and preventing the heat-insulating layer from falling off, and the heat-insulating layer anchoring A, the heat-insulating layer anchoring B and the heat-insulating layer anchoring C are all formed by bending steel wires and are fixedly connected with the cyclone air pipes through welding.
Furthermore, the cyclone air outlet pipe is fixedly arranged at the upper part of the air inlet main pipe in a bevel gear tooth form, the rotating axis of the conical surface where the cyclone air outlet pipe is arranged and the axis of the air inlet main pipe form an included angle of 30 degrees, and the conical surface where the cyclone air outlet pipe is arranged and the axis of the air inlet main pipe form an included angle of 45 degrees; the airflow sprayed out of each cyclone air outlet pipe is sprayed out in an inclined downward mode, the airflow sprayed out of the plurality of cyclone air outlet pipes can form rotating airflow in the continuous oxidation furnace, and the rotating airflow generates turbulence, so that zinc steam and air are further fully mixed; in addition, the downward rotating airflow collides with the bottom of the continuous oxidation furnace and then rebounds upwards, so that more turbulence is generated, and the zinc steam and the air are mixed more fully; meanwhile, zinc steam and air entering the continuous oxidation furnace undergo the processes of downward rotary flow, contact with the bottom of the continuous oxidation furnace and then upward rotary flow, the path length of the mixed gas flowing in the continuous oxidation furnace is increased, and the retention time in the continuous oxidation furnace is correspondingly increased, so that the sufficient combustion of the metal zinc in the continuous oxidation furnace is ensured.
Further, a heat insulation ceramic plate is arranged at the upper part of the air inlet main pipe plug; the zinc steam and the air entering the cyclone air pipe combination have high temperature, when the airflow with high temperature continuously impacts the air inlet main pipe plug, the air inlet main pipe plug can generate local high temperature, the local high temperature can generate temperature difference between a local heat insulation layer positioned at the upper part of the air inlet main pipe plug and heat insulation layers in other areas, and the temperature difference of the heat insulation layers can cause the heat insulation layers to crack, so that the service life of the heat insulation layers is influenced; after the heat insulation ceramic plate is added, the temperature difference problem of the heat insulation layer can be improved, and the service life of the heat insulation layer is prolonged.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects: the utility model discloses a cyclone zinc oxide negative pressure continuous oxidation furnace, which adopts a structure that a cyclone air pipe combination is arranged at the bottom of the continuous oxidation furnace, so that zinc steam and air entering the continuous oxidation furnace are sprayed to the bottom of the continuous oxidation furnace in a rotating airflow manner, and the effects of fully mixing the zinc steam and the air and increasing the residence time in the continuous oxidation furnace are achieved, thereby ensuring the full combustion of metal zinc in the continuous oxidation furnace; the negative pressure continuous oxidation furnace with the structure has the advantages of small equipment volume and high production efficiency, and greatly improves the production efficiency of zinc oxide on the premise of not increasing the equipment cost, thereby greatly improving the economic benefit of enterprises.
Drawings
FIG. 1 is a schematic structural view of a cyclone-type zinc oxide negative pressure continuous oxidation furnace;
FIG. 2 is a schematic view of the appearance of the cyclone air tube assembly;
FIG. 3 is a schematic sectional view of the cyclone air tube assembly;
FIG. 4 is a schematic view of the appearance of a cyclone gas tube;
FIG. 5 is a top view of the cyclone tube;
FIG. 6 is a schematic view showing the pipeline connection of the cyclone zinc oxide negative pressure continuous oxidation furnace in the working state.
In the figure: 1. an oxidation furnace body; 2. a heat conducting oil coil; 3. combining a cyclone air pipe; 3.1, a cyclone air pipe; 3.1.1, a main air inlet pipe; 3.1.2, a cyclone air outlet pipe; 3.1.3, an air inlet main pipe plug; 3.1.4, sealing rings of the air inlet main pipe; 3.1.5, anchoring the heat insulation layer A; 3.1.6, anchoring the heat insulation layer B; 3.1.7, anchoring a thermal insulation layer C; 3.2, a heat insulation layer; 4. a rotary kiln; 5. a distillation chamber; 6. a distillation chamber heat exchanger; 7. fresh air heat exchanger.
Detailed Description
The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.
A cyclone zinc oxide negative pressure continuous oxidation furnace comprises an oxidation furnace body 1, a heat conducting oil coil pipe 2 and a cyclone air pipe combination 3; the oxidation furnace body 1 is of a double-layer structure, the three groups of heat conduction oil coil pipes 2 are fixedly arranged in an interlayer of the double-layer structure of the oxidation furnace body 1, and the cyclone air pipe combination 3 is fixedly arranged at the bottom of the oxidation furnace body 1; the cyclone air pipe combination 3 comprises a cyclone air pipe 3.1 and a heat insulation layer 3.2; the cyclone gas pipe 3.1 comprises a gas inlet main pipe 3.1.1 and a cyclone gas outlet pipe 3.1.2, the top of the gas inlet main pipe 3.1.1 is fixedly provided with a gas inlet main pipe plug 3.1.3, the main pipe plug 3.1.3, and the upper part is provided with a heat insulation ceramic plate; four cyclone air outlet pipes 3.1.2 are fixedly arranged at the upper part of the air inlet main pipe 3.1.1 in a bevel gear tooth form, and the rotating axis of the conical surface where the cyclone air outlet pipes 3.1.2 are arranged and the axis of the air inlet main pipe 3.1.1 are provided with an included angle of 30 degrees; a conical surface where the cyclone air outlet pipe 3.1.2 is located and the axis of the air inlet main pipe 3.1.1 are provided with an included angle of 45 degrees, and the air inlet main pipe 3.1.1 is communicated with the cyclone air outlet pipe 3.1.2; the lower part of the main air inlet pipe 3.1.1 is fixedly provided with a main air inlet pipe sealing ring 3.1.4, the outer part of the main air inlet pipe 3.1.1, which is positioned at the upper side of the main air inlet pipe sealing ring 3.1.4, is fixedly provided with a heat-insulating layer anchor A3.1.5, the outer part of the main air inlet pipe 3.1.1, which is close to the top, is fixedly provided with a heat-insulating layer anchor C3.1.7, and the outer part of the cyclone air outlet pipe 3.1.2 is fixedly provided with a heat-insulating layer anchor B3.1.6; the heat insulation layer 3.2 is fixedly arranged at the upper part of the main air inlet pipe 3.1.1 and outside the cyclone air outlet pipe 3.1.2.
The present invention is not described in detail in the prior art.
Claims (6)
1. A cyclone zinc oxide negative pressure continuous oxidation furnace is characterized in that: comprises an oxidation furnace body (1), a heat conducting oil coil pipe (2) and a cyclone air pipe combination (3); the oxidation furnace body (1) is of a double-layer structure, the heat conducting oil coil (2) is fixedly arranged in an interlayer of the double-layer structure of the oxidation furnace body (1), and the cyclone air pipe combination (3) is fixedly arranged at the bottom of the oxidation furnace body (1).
2. The cyclone type zinc oxide negative pressure continuous oxidation furnace according to claim 1, which is characterized in that: the heat conducting oil coil pipes (2) are provided with a plurality of groups.
3. The cyclone type zinc oxide negative pressure continuous oxidation furnace according to claim 1, which is characterized in that: the cyclone air pipe combination (3) comprises a cyclone air pipe (3.1) and a heat insulation layer (3.2); the cyclone gas pipe (3.1) comprises a gas inlet main pipe (3.1.1) and a cyclone gas outlet pipe (3.1.2), the top of the gas inlet main pipe (3.1.1) is fixedly provided with a gas inlet main pipe plug (3.1.3), the cyclone gas outlet pipe (3.1.2) is fixedly arranged at the upper part of the gas inlet main pipe (3.1.1), and the gas inlet main pipe (3.1.1) is communicated with the cyclone gas outlet pipe (3.1.2); the heat insulation layer (3.2) is fixedly arranged at the upper part of the air inlet main pipe (3.1.1) and outside the cyclone air outlet pipe (3.1.2).
4. The cyclone type zinc oxide negative pressure continuous oxidation furnace according to claim 3, which is characterized in that: the lower part of the main air inlet pipe (3.1.1) is fixedly provided with a main air inlet pipe sealing ring (3.1.4); a heat insulation layer anchoring A (3.1.5) is fixedly arranged outside the upper side of the air inlet main pipe (3.1.1) positioned on the air inlet main pipe sealing ring (3.1.4); a heat insulation layer anchoring C (3.1.7) is fixedly arranged on the outer part of the main air inlet pipe (3.1.1) close to the top; and a heat-insulating layer anchoring B (3.1.6) is fixedly arranged outside the cyclone air outlet pipe (3.1.2).
5. The cyclone type zinc oxide negative pressure continuous oxidation furnace according to claim 3, which is characterized in that: the cyclone air outlet pipe (3.1.2) is fixedly arranged at the upper part of the air inlet main pipe (3.1.1) in a bevel gear tooth form, and the rotating axis of the conical surface where the cyclone air outlet pipe (3.1.2) is arranged and the axis of the air inlet main pipe (3.1.1) form an included angle of 30 degrees; the conical surface where the cyclone air outlet pipe (3.1.2) is located and the axis of the air inlet main pipe (3.1.1) are provided with an included angle of 45 degrees.
6. The cyclone type zinc oxide negative pressure continuous oxidation furnace according to claim 3, which is characterized in that: the upper part of the air inlet main pipe plug (3.1.3) is provided with a heat insulation ceramic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123163649.XU CN216790169U (en) | 2021-12-16 | 2021-12-16 | Cyclone type zinc oxide negative pressure continuous oxidation furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123163649.XU CN216790169U (en) | 2021-12-16 | 2021-12-16 | Cyclone type zinc oxide negative pressure continuous oxidation furnace |
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| Publication Number | Publication Date |
|---|---|
| CN216790169U true CN216790169U (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123163649.XU Active CN216790169U (en) | 2021-12-16 | 2021-12-16 | Cyclone type zinc oxide negative pressure continuous oxidation furnace |
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| Country | Link |
|---|---|
| CN (1) | CN216790169U (en) |
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2021
- 2021-12-16 CN CN202123163649.XU patent/CN216790169U/en active Active
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