CN219730969U - Flow guiding device for balancing throughput of flue gas of preheater - Google Patents
Flow guiding device for balancing throughput of flue gas of preheater Download PDFInfo
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- CN219730969U CN219730969U CN202320216232.5U CN202320216232U CN219730969U CN 219730969 U CN219730969 U CN 219730969U CN 202320216232 U CN202320216232 U CN 202320216232U CN 219730969 U CN219730969 U CN 219730969U
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- preheater
- gas
- air
- plate type
- flow guiding
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000003546 flue gas Substances 0.000 title claims abstract description 20
- 239000007789 gas Substances 0.000 claims abstract description 37
- 239000000779 smoke Substances 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 3
- 230000008025 crystallization Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a flow guiding device for balancing the throughput of flue gas of a preheater, which comprises a plate type preheater, wherein air pipelines and gas pipelines to be preheated are respectively arranged on two sides of the plate type preheater, hot gas enters from an inlet of the plate type preheater to preheat the air pipelines and the gas pipelines, a flow guiding cover is arranged at the inlet of the plate type preheater, a flow guiding valve capable of adjusting the flow guiding quantity of the hot gas is arranged in the middle of the flow guiding cover, and temperature measuring devices are arranged at the outlet air pipelines and the gas pipelines of the plate type preheater. According to the utility model, the flow guide device is added at the air inlet of the preheater, and the high-temperature smoke quantity of the preheated air is increased by adjusting the flow guide valve, so that the smoke temperature can be more fully utilized, the integral temperature of the preheater is improved, the crystallization of the pipeline of the preheater is reduced, the service life of the preheater is prolonged, and the vault temperature and the burning efficiency of the blast furnace hot blast stove are improved.
Description
Technical Field
The utility model relates to the technical field of metallurgical equipment, in particular to a flow guiding device for balancing the throughput of flue gas of a preheater.
Background
The hot blast stove is one of the main matched equipment of the blast furnace in the iron works, and has the function of heating the blast air to the required temperature so as to improve the benefit and the efficiency of the blast furnace. In order to increase the hot air temperature of the blast furnace hot blast stove, reduce the iron-making production cost and save energy sources, the temperature of mixed combustion of the entering gas and air needs to be increased, the heating time of the hot blast stove is saved, and the energy consumption is reduced. The traditional mode is to adopt a blast furnace flue gas pipeline to directly connect with a preheater for preheating air and coal gas. However, the gas is produced from a blast furnace and has a high temperature, while the air is at room temperature and is relatively low. The disadvantage of the through exhaust gas pipeline is that the heating amount of the air is less, high-temperature flue gas is wasted, meanwhile, the air at the outlet of the preheater is far lower than the gas, the outlet side of the preheater is easy to generate crystallization blockage due to the lower outlet temperature, and the service life and the preheating effect of the preheater are greatly reduced due to the vicious circle in the past.
Disclosure of Invention
The utility model aims to: in order to overcome the defects of the background technology, the utility model discloses a flow guiding device for balancing the throughput of the flue gas of a preheater.
The technical scheme is as follows: the utility model discloses a flow guiding device for balancing the throughput of flue gas of a preheater, which comprises a plate type preheater, wherein an air pipeline and a gas pipeline to be preheated are respectively arranged on two sides of the plate type preheater, hot gas enters from an inlet of the plate type preheater to preheat the air pipeline and the gas pipeline, a flow guiding cover is arranged at the inlet of the plate type preheater, a flow guiding valve capable of adjusting the flow guiding quantity of the hot gas is arranged in the middle of the flow guiding cover, and temperature measuring devices are arranged at the positions of an outlet air pipeline and the gas pipeline of the plate type preheater.
Further, the hot gas is blast furnace flue gas.
Further, the flow guide valve comprises a valve shaft and a flow guide plate driven to rotate by the valve shaft, the axial setting angle of the valve shaft corresponds to the joint of the air pipeline and the gas pipeline, and the control of the hot air quantity entering one side of the air pipeline and one side of the gas pipeline is realized by deflecting the flow guide plate.
Further, the device also comprises a controller, wherein the controller is connected with the temperature measuring device at the outlet of the plate-type preheater and the flow guiding valve, and the flow guiding valve is controlled according to the temperature difference of the measured outlet air and the gas, so that the automatic flow distribution of the hot gas is realized.
The beneficial effects are that: compared with the prior art, the utility model has the advantages that: the flow guiding device is added at the air inlet of the preheater, the high-temperature smoke quantity of the preheated air is increased by adjusting the flow guiding valve, the smoke temperature can be utilized more fully, the whole temperature of the preheater is improved, the crystallization of the pipeline of the preheater is reduced, the service life of the preheater is prolonged, and the vault temperature and the burning efficiency of the blast furnace hot blast stove are improved.
Drawings
FIG. 1 is a side view of the present utility model;
fig. 2 is a top view of the present utility model.
Description of the embodiments
The flow guiding device for balancing the flue gas throughput of the preheater shown in fig. 1 and 2 comprises a plate type preheater, wherein air pipelines and gas pipelines to be preheated are respectively arranged on two sides of the plate type preheater, blast furnace flue gas enters the plate type preheater from an inlet to preheat the air pipelines and the gas pipelines, a flow guiding cover 1 is arranged at the inlet of the plate type preheater, a flow guiding valve 2 capable of adjusting the flue gas split flow is arranged in the middle of the flow guiding cover 1, the flow guiding valve 2 comprises a valve shaft 201 and a flow guiding plate 202 which is driven to rotate by the valve shaft 201, the axial direction of the valve shaft 201 is provided with an angle corresponding to the joint of the air pipelines and the gas pipelines, and the control of the flue gas flow entering one side of the air pipelines and one side of the gas pipelines is realized by deflecting the flow guiding plate 202. Temperature measuring devices are arranged at the outlet air pipeline and the gas pipeline of the plate type preheater. The opening of the gas outlet of the preheater and the opening of the air temperature adjusting flow guide valve are monitored, so that high-temperature flue gas is more reasonably guided to the air preheater side, and the air temperature at the outlet of the air preheater is close to the gas outlet temperature.
The temperature of the air outlet of the preheater is 80-100 ℃ and the gas temperature is 200 ℃ when the device is not used. After the device is installed, the temperature of air and gas can be stably controlled at 200 ℃. Not only improves the vault temperature of the hot blast stove and reduces the production cost, but also ensures that the preheater body is not easy to crystallize and block.
In order to realize automatic control, a controller can be arranged, and the controller is connected with a temperature measuring device at the outlet of the plate-type preheater and a valve shaft 201 of the flow guide valve, and controls the valve shaft 201 to rotate according to the measured temperature difference between the air and the gas to drive the flow guide plate 202 to deflect, so that automatic flow distribution of the flue gas is realized. The process of this controller sending out control signals by means of data changes requires technical means conventional in the electrical control field.
Claims (4)
1. A deflector for balancing the throughput of flue gas from a preheater, comprising: the hot air preheating device comprises a plate type preheater, wherein an air pipeline and a gas pipeline to be preheated are respectively arranged on two sides of the plate type preheater, hot air enters the plate type preheater from an inlet to preheat the air pipeline and the gas pipeline, a guide cover (1) is arranged at the inlet of the plate type preheater, a guide valve (2) capable of adjusting the hot air split flow is arranged in the middle of the guide cover (1), and temperature measuring devices are arranged at the outlet air pipeline and the gas pipeline of the plate type preheater.
2. The flow guide device for balancing the flue gas throughput of a preheater as set forth in claim 1, wherein: the hot gas is blast furnace flue gas.
3. The flow guide device for balancing the flue gas throughput of a preheater as set forth in claim 1, wherein: the flow guide valve (2) comprises a valve shaft (201) and a flow guide plate (202) which is driven to rotate by the valve shaft (201), wherein the valve shaft (201) is axially arranged at the joint of the air pipeline and the gas pipeline, and the control of the hot air quantity entering one side of the air pipeline and one side of the gas pipeline is realized by deflecting the flow guide plate (202).
4. The flow guide device for balancing the flue gas throughput of a preheater as set forth in claim 1, wherein: the device also comprises a controller, wherein the controller is connected with the temperature measuring device at the outlet of the plate-type preheater and the flow guiding valve, and the flow guiding valve is controlled according to the temperature difference of the measured outlet air and the gas, so that the automatic flow distribution of the hot gas is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320216232.5U CN219730969U (en) | 2023-02-15 | 2023-02-15 | Flow guiding device for balancing throughput of flue gas of preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320216232.5U CN219730969U (en) | 2023-02-15 | 2023-02-15 | Flow guiding device for balancing throughput of flue gas of preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219730969U true CN219730969U (en) | 2023-09-22 |
Family
ID=88026104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320216232.5U Active CN219730969U (en) | 2023-02-15 | 2023-02-15 | Flow guiding device for balancing throughput of flue gas of preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219730969U (en) |
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2023
- 2023-02-15 CN CN202320216232.5U patent/CN219730969U/en active Active
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