CN215876608U - Mixed air cooling device for high-temperature dust removal flue gas - Google Patents
Mixed air cooling device for high-temperature dust removal flue gas Download PDFInfo
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- CN215876608U CN215876608U CN202122311698.7U CN202122311698U CN215876608U CN 215876608 U CN215876608 U CN 215876608U CN 202122311698 U CN202122311698 U CN 202122311698U CN 215876608 U CN215876608 U CN 215876608U
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Abstract
The utility model provides a mixed wind heat sink of high temperature dust removal flue gas, including the dust remover, inlet end at the dust remover is equipped with intake pipe and mixed tuber pipe in proper order, end of giving vent to anger at the dust remover is equipped with blast pipe and frequency conversion fan, still be provided with the cold air duct between intake pipe and mixed tuber pipe, be provided with electrical control valve on the cold air duct, be equipped with temperature monitor at the air inlet of cold air duct, be provided with temperature monitor in the intake pipe, the import department that is close to the dust remover on mixed tuber pipe is provided with temperature monitor, temperature control module controls electrical control valve's aperture and frequency conversion fan's operating frequency through the measured value of monitoring three temperature monitor. The utility model can synchronously increase the working air quantity of the variable frequency fan according to the cold air quantity introduced by the electric regulating valve, realize the cooling of the flue gas without influencing the dedusting air quantity, prolong the service life of the filter bag and improve the flue gas treatment effect.
Description
Technical Field
The utility model belongs to the technical field of high-temperature flue gas purification processes, and particularly relates to a mixed air cooling device for high-temperature dedusting flue gas.
Background
In the field of metallurgy, blast furnaces and coke ovens can discharge high-temperature dust-containing flue gas in a short time during working. The adoption of a bag type dust collector to treat dust-containing flue gas is a technical means of main flow in the industry, and in order to solve the problem that the filter bag is damaged due to overhigh temperature of the flue gas, a high-temperature-resistant filter bag is generally used for replacing a common filter bag, but the method does not solve the problem that the high-temperature flue gas affects other parts of a dust removal system, and has some defects such as: the high-temperature flue gas can accelerate the aging of the coating and the material of the dust remover, so that the service life of the dust remover is shortened, the cost of a high-temperature-resistant filter bag is high, and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a mixed air cooling device for high-temperature dedusting flue gas, which aims to solve the technical problems that the high-temperature flue gas accelerates the aging of a deduster and reduces the service life of the deduster.
In order to achieve the purpose, the specific technical scheme of the air mixing and cooling device for the high-temperature dedusting flue gas is as follows:
the utility model provides a mixed wind heat sink of high temperature dust removal flue gas, a serial communication port, including the dust remover, inlet end at the dust remover is equipped with intake pipe and mixed tuber pipe in proper order, end of giving vent to anger at the dust remover is equipped with blast pipe and variable frequency fan, still be provided with the cold air duct between intake pipe and mixed tuber pipe, be provided with electric control valve on the cold air duct, be equipped with temperature monitor at the air inlet of cold air duct, be provided with temperature monitor in the intake pipe, the import department that is close to the dust remover on mixed tuber pipe is provided with temperature monitor, temperature control module controls electric control valve's aperture and variable frequency fan's operating frequency through monitoring three temperature monitor's measuring value.
Further, the air inlet of the cold air pipe is provided with a silencing device.
Further, the air introduced into the air mixing pipe through the cold air pipe is normal air.
Further, the sectional area of the air mixing pipe is larger than that of the air inlet pipe.
The air mixing and cooling device for the high-temperature dedusting flue gas has the following advantages:
1. the temperature control module is adopted to control the variable frequency fan and the electric regulating valve, the variable frequency fan and the electric regulating valve are linked, the working air quantity of the variable frequency fan can be synchronously increased according to the cold air quantity introduced by the electric regulating valve, and the dedusting air quantity is not influenced when the flue gas is cooled.
2. Through the cooperation mechanism of three temperature monitor and electrical control valve, can accurate control cold wind volume to reduce construction cost and running cost.
3. The temperature of the flue gas after the mixing and cooling treatment meets the use requirement of a dust remover, the service life of the filter bag is prolonged, and the flue gas treatment effect is improved.
Drawings
FIG. 1 is a schematic structural view of a mixed air cooling device for high temperature flue gas;
FIG. 2 is a schematic diagram of the control system of the present invention;
the notation in the figure is: 1. an air inlet pipe; 2. a cold air pipe; 3. a mixed air duct; 4. an electric control valve; 5. a silencer device; 6. a temperature monitor; 7 a temperature monitor; 8. a temperature monitor; 9. a dust remover; 10. an exhaust pipe; 11. frequency conversion fan.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, the air mixing and cooling device for high temperature dust removal flue gas of the present invention is further described in detail with reference to the accompanying drawings.
As shown in fig. 1-2, the air mixing and cooling device for high-temperature dust-removing flue gas of the utility model comprises a dust remover 9, an air inlet pipe 1 and an air mixing pipe 3 are sequentially arranged at an air inlet end of the dust remover 9, an exhaust pipe 10 and a variable frequency fan 11 are arranged at an air outlet end of the dust remover 9, a cold air pipe 2 is further arranged between the air inlet pipe 1 and the air mixing pipe 3, an electric regulating valve 4 is arranged on the cold air pipe 2, a temperature monitor 6 is arranged at an air inlet of the cold air pipe 2, a temperature monitor 7 is arranged on the air inlet pipe 1, a temperature monitor 8 is arranged on the air mixing pipe 3 near an inlet of the dust remover 9, and a temperature control module controls the opening degree of the electric regulating valve 4 and the operating frequency of the variable frequency fan 11 by monitoring the measured values of the three temperature monitors.
Further, a silencer 5 is disposed at the air inlet of the cold air pipe 2 to reduce noise generated by the air flow.
Further, the air introduced into the air mixing pipe 3 through the cold air pipe 2 is normal air.
Further, the sectional area of the air mixing pipe 3 is larger than that of the air inlet pipe 1, so that the high-temperature flue gas and normal air can perform sufficient heat exchange in the air mixing pipe 3, and the temperature of the flue gas entering the dust remover 9 is reduced.
When the device works, the real-time temperature of the flue gas, the atmosphere and the air mixing pipe is measured by the temperature monitor and uploaded to the temperature control module, if the temperature of the flue gas exceeds the upper limit specified by the parameters of the dust remover, the temperature control module calculates the required cold air quantity through a built-in heat balance equation, controls the opening of the dynamic adjusting valve of the electric adjusting valve 4, introduces normal air and mixes the normal air with the high-temperature flue gas, so as to reduce the temperature of the flue gas and ensure that the temperature of the flue gas entering the dust remover 9 meets the requirements of the dust remover. The temperature control module controls the operating frequency of the variable frequency fan 11 at the same time, so that the air quantity increased by the variable frequency fan 11 is consistent with the air quantity passing through the cold air pipe 2, the opening degree of the valve and the operating frequency of the variable frequency fan are accurately adjusted, and the effect of reducing the dedusting air quantity while cooling the flue gas is achieved.
According to the air mixing and cooling device for the high-temperature dust removal flue gas, the variable frequency fan and the electric regulating valve are controlled by the temperature control module, so that the variable frequency fan and the electric regulating valve are linked, the working air volume of the variable frequency fan can be synchronously increased according to the cold air volume introduced by the electric regulating valve, and the flue gas cooling is realized without influencing the dust removal air volume. In addition, this device can accurate control cold wind volume through three temperature monitor and electric control valve's cooperation mechanism to reduce construction cost and running cost. Meanwhile, the temperature of the flue gas entering the dust remover meets the use requirement of the dust remover, so that the service life of the filter bag is prolonged, the flue gas treatment effect is improved, and the waste of energy and funds is reduced.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. The air mixing and cooling device for high-temperature dedusting flue gas is characterized by comprising a deduster (9), an air inlet pipe (1) and a mixed air pipe (3) are sequentially arranged at the air inlet end of the dust remover (9), an exhaust pipe (10) and a variable frequency fan (11) are arranged at the air outlet end of the dust remover (9), a cold air pipe (2) is arranged between the air inlet pipe (1) and the air mixing pipe (3), an electric regulating valve (4) is arranged on the cold air pipe (2), a temperature monitor (6) is arranged at an air inlet of the cold air pipe (2), be provided with temperature monitor (7) on intake pipe (1) be close to on air mixing pipe (3) the import department of dust remover (9) is provided with temperature monitor (8), and the measured value of temperature control module through monitoring three temperature monitor (6, 7, 8) is controlled the aperture of electrical control valve (4) and the operating frequency of frequency conversion fan (11).
2. The air mixing and cooling device for the high-temperature dedusting flue gas as recited in claim 1, characterized in that the air inlet of the cold air pipe (2) is provided with a silencer (5).
3. The air mixing and cooling device for the high-temperature dedusting flue gas as recited in claim 1, wherein the air introduced into the air mixing pipe (3) through the cold air pipe (2) is normal air.
4. The air mixing and cooling device for the high-temperature dedusting flue gas as recited in claim 1, wherein the cross-sectional area of the air mixing pipe (3) is larger than that of the air inlet pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122311698.7U CN215876608U (en) | 2021-09-24 | 2021-09-24 | Mixed air cooling device for high-temperature dust removal flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122311698.7U CN215876608U (en) | 2021-09-24 | 2021-09-24 | Mixed air cooling device for high-temperature dust removal flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215876608U true CN215876608U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122311698.7U Active CN215876608U (en) | 2021-09-24 | 2021-09-24 | Mixed air cooling device for high-temperature dust removal flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215876608U (en) |
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2021
- 2021-09-24 CN CN202122311698.7U patent/CN215876608U/en active Active
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