CN215288862U - Dehumidification system of blast furnace blower - Google Patents
Dehumidification system of blast furnace blower Download PDFInfo
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- CN215288862U CN215288862U CN202121853955.3U CN202121853955U CN215288862U CN 215288862 U CN215288862 U CN 215288862U CN 202121853955 U CN202121853955 U CN 202121853955U CN 215288862 U CN215288862 U CN 215288862U
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Abstract
The application relates to a blast furnace blower dehumidification system, it includes: the device comprises a first dehumidification box, a second dehumidification box, a bypass pipe and a collection box, wherein the first dehumidification box and the second dehumidification box are communicated and provided with a first pipeline, a first valve is arranged on the first pipeline, the bypass pipe is communicated with the first pipeline, the communication position of the bypass pipe is positioned on one side of the first valve, which is far away from the second dehumidification box, a second valve is arranged on the bypass pipe, and the first dehumidification box and the second dehumidification box are both communicated with the collection box; the first humidity sensor is arranged at the air inlet of the first dehumidification box and used for detecting the humidity at the air inlet of the first dehumidification box and outputting humidity information; the control unit is connected to the first humidity sensor, controls the first valve to be opened and controls the second valve to be closed when the humidity information is larger than a first preset value, and controls the first valve to be closed and controls the second valve to be opened when the humidity information is smaller than the first preset value. The application reduces the wind resistance of the dehumidification system at low dehumidification strength.
Description
Technical Field
The application relates to the field of blast furnaces, in particular to a dehumidification system of a blast furnace blower.
Background
The blast furnace blower is one of important devices in iron-making production, and the operation condition of the blast furnace blower has important influence on the efficient and stable production of the blast furnace.
When the moisture content in blast furnace blast is too high, the theoretical combustion temperature in front of a tuyere can be reduced, the heat consumption in the furnace is increased, the temperature of the blast furnace is unstable, the stable operation of the furnace condition is damaged, and the yield of the blast furnace is influenced.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: in different seasons, the dehumidifier is controlled to dehumidify in different strengths, and the large-size heat exchanger increases the wind resistance of air circulation, thereby wasting the power consumption of air supply.
SUMMERY OF THE UTILITY MODEL
In order to reduce wind resistance at low dehumidification strength, the present application provides a blast furnace blower dehumidification system.
The application provides a blast furnace blower dehumidification system adopts following technical scheme:
a blast furnace blower dehumidification system comprising: the device comprises a first dehumidification box, a second dehumidification box, a bypass pipe and a collection box, wherein a first heat exchanger is arranged in the first dehumidification box, a second heat exchanger is arranged in the second dehumidification box, the first dehumidification box is communicated with the second dehumidification box and provided with a first pipeline, a dust chamber is arranged on the air inlet side of the first dehumidification box, which is far away from the second dehumidification box, a first valve is arranged on the first pipeline, the bypass pipe is communicated with the first pipeline, the communication position of the bypass pipe is positioned on one side of the first valve, which is far away from the second dehumidification box, a second valve is arranged on the bypass pipe, and the first dehumidification box and the second dehumidification box are both communicated with the collection box;
the dehumidification system further comprises:
the first humidity sensor is arranged at the air inlet of the first dehumidification box and used for detecting the humidity at the air inlet of the first dehumidification box and outputting humidity information;
the control unit is connected to the first humidity sensor, controls the first valve to be opened and controls the second valve to be closed when the humidity information is larger than a first preset value, and controls the first valve to be closed and controls the second valve to be opened when the humidity information is smaller than the first preset value.
By adopting the technical scheme, when the humidity information is greater than the first preset value, the current air humidity is higher, the air passing through the dust removing chamber and the first dehumidifying box enters the second dehumidifying box to exchange heat with the second heat exchanger again, and the effect of effectively dehumidifying the air with higher humidity is realized through twice heat exchange; when the humidity information is smaller than the first preset value, the current air humidity is smaller, the first valve is closed, the second valve is opened, the air passing through the dust removing chamber and the first dehumidifying box enters the bypass pipe and then is discharged, primary heat exchange is carried out between the air and the air, meanwhile, the wind resistance of the air passing through the second dehumidifying box is reduced through the bypass pipe, and the wind resistance is reduced when the dehumidifying strength is low.
Optionally, a second pipeline is arranged between the first dehumidification box and the dust chamber, a third valve is arranged on the second pipeline, the bypass pipe is communicated with the second pipeline, the communication position of the bypass pipe is located on one side, far away from the first dehumidification box, of the third valve, a fourth valve is arranged at the communication position of the bypass pipe and the second pipeline, and a fifth valve is further arranged between the bypass pipe and the second valve;
the control unit is further configured to: and when the humidity information is less than the second preset value, the third valve and the fifth valve are controlled to be closed and the fourth valve is controlled to be opened, wherein the first preset value is greater than the second preset value.
By adopting the technical scheme, when the humidity information is greater than the second preset value and less than the first preset value, the third valve is opened, the fifth valve and the second valve are opened, and at the moment, the external air is subjected to heat exchange dehumidification only through the first heat exchanger; when the humidity information is larger than a first preset value, a third valve, a fifth valve (the second valve is closed) and the first valve are opened, and the outside air exchanges heat with the first heat exchanger and the second heat exchanger; when the humidity information is smaller than the second preset value, the fourth valve is opened, the third valve and the fifth valve are closed, and air directly enters the blast furnace blower through the bypass pipe after being dedusted by the dedusting chamber, so that the wind resistance is reduced when the air is not required to be dehumidified.
Optionally, a first demister is arranged in the first dehumidifying tank, and a second demister is arranged in the second dehumidifying tank.
Through adopting above-mentioned technical scheme, the air is after the dehumidification, and the remaining moisture that carries in the air is got rid of through first defroster and/or second defroster.
Optionally, a second humidity sensor is disposed at an air outlet of the second dehumidification box, and a third humidity sensor is disposed at an air outlet of the bypass pipe.
Through adopting above-mentioned technical scheme, the staff of being convenient for through second humidity transducer and third humidity transducer detects the air humidity condition after the dehumidification.
Optionally, the dehumidification system further comprises a first indicator light and a second indicator light connected to the control unit;
when the first valve is opened, the control unit controls the first indicator light to light;
when the third valve is opened, the control unit controls the second indicator light to light.
Through adopting above-mentioned technical scheme, the staff of being convenient for is observed the route of circulation of air to first pilot lamp and second pilot lamp.
Optionally, the air inlet of the dust removal chamber is provided with a dust sensor.
Through adopting above-mentioned technical scheme, the dust sensor is convenient for the staff to detect the dust content in the air, is convenient for adjust the dust removal intensity of clean room according to the dust concentration in the air.
Optionally, the heat exchanger is any one of a cold water heat exchanger and a brine heat exchanger.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the function of reducing wind resistance in low dehumidification strength is realized by adopting the first dehumidification box, the second dehumidification box, the bypass pipe, the first humidity sensor and the control unit;
2. through adopting first defroster and second defroster, realized carrying out the function of further dehumidification to the air after the dehumidification.
Drawings
FIG. 1 is an overall schematic diagram of an embodiment of the present application;
FIG. 2 is a schematic diagram of a salient control unit;
fig. 3 is a circuit schematic diagram corresponding to a control unit according to an embodiment of the present application.
Description of reference numerals: 1. a first moisture removal tank; 11. a first heat exchanger; 12. a first demister; 13. a first conduit; 131. a first valve; 14. a second conduit; 141. a third valve; 2. a second moisture removal tank; 21. a second heat exchanger; 22. a second demister; 23. a second humidity sensor; 3. a bypass pipe; 31. a second valve; 32. a fourth valve; 33. a fifth valve; 34. a third humidity sensor; 4. a collection box; 5. a first humidity sensor; 6. a control unit; 7. a dust chamber; 71. a dust sensor.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a dehumidification system of a blast furnace blower. Referring to fig. 1 and 2, a first dehumidifying tank 1, a second dehumidifying tank 2, a bypass pipe 3, a collecting tank 4, a first humidity sensor 5, and a control unit 6;
referring to fig. 1, a first dehumidification tank 1 and a second dehumidification tank 2 are arranged in a horizontal direction, a first heat exchanger 11 is arranged in the first dehumidification tank 1, a second heat exchanger 21 is arranged in the second dehumidification tank 2, the first heat exchanger 11 and the second heat exchanger 21 are both any one of a cold water heat exchanger and a brine heat exchanger, and the first heat exchanger 11 and the second heat exchanger 21 are both connected with a refrigerating unit (shown in the figure) for providing cooling water; specifically, the principle of the first heat exchanger 11 and the second heat exchanger 21 for dehumidifying air is a physical condensation method, and the principle is that water in air is separated out by reducing the drying temperature of humid air, so as to meet the dehumidification requirement.
The first dehumidifying box 1 is communicated with the second dehumidifying box 2 to form a first pipeline 13, a dust removing chamber 7 is arranged on the air inlet side of the first dehumidifying box 1, which is far away from the second dehumidifying box 2, the dust removing chamber 7 removes dust through a dust removing cloth bag, an air inlet of the dust removing chamber 7 is provided with a dust sensor 71, and the collecting box 4 is communicated with the bottoms of the first dehumidifying box 1 and the second dehumidifying box 2 and is used for collecting condensed water formed after dehumidifying. The dust sensor 71 is convenient for workers to detect the dust content in the air and adjust the dust removal strength of the dust removal chamber 7 according to the dust concentration in the air.
Referring to fig. 1, in order to further dehumidify, in the embodiment of the present invention, a first demister 12 is provided in a first dehumidifying tank 1, and a second demister 22 is provided in a second dehumidifying tank 2. After the air is subjected to dehumidification treatment, residual moisture carried in the air is removed through a demister.
Referring to fig. 1, a first valve 131 is provided on the first pipeline 13, and a second valve 31 is provided at the communication position of the bypass pipe 3 and the first pipeline 13 at the side of the first valve 131 far from the second dehumidifying tank 2 where the bypass pipe 3 communicates with the first pipeline 13; the first humidity sensor 5 is arranged at the air inlet of the first dehumidification box 1 and used for detecting the humidity at the air inlet of the first dehumidification box 1 and outputting humidity information; the control unit 6 is connected to the first humidity sensor 5, and controls the first valve 131 to open and the second valve 31 to close when the humidity information is greater than the first preset value, and controls the first valve 131 to close and the second valve 31 to open when the humidity information is less than the first preset value.
Referring to fig. 3, the control unit 6 includes a first comparator OA1, a first transistor Q1 and a first electromagnetic relay KV1, wherein a non-inverting input terminal of the first comparator OA1 is connected to an output terminal of the first humidity sensor P, and an inverting input terminal of the first comparator OA1 is connected to a first preset value Vref 1; the first triode Q1 is an NPN triode which is conducted in response to a high level, the output end of the first comparator OA1 is connected to the base electrode of the first triode Q1, the coil of the first electromagnetic relay KV1 is connected to the emitting electrode of the first triode Q1, the normally open contact KV1-1 of the first electromagnetic relay is connected to a loop where the first valve is located, the normally closed contact KV1-2 of the first electromagnetic relay is connected to a loop where the second valve is located, and the first valve and the second valve are both electrically controlled valves.
The working principle of the dehumidification system is as follows: for example, the first preset value is 10 (humidity unit), when the humidity information is greater than the first preset value, the air passing through the dust removal chamber 7 and the first dehumidification box 1 enters the second dehumidification box 2 to exchange heat with the second heat exchanger 21 again, and the effect of effectively dehumidifying the air with high humidity is achieved through two heat exchanges; when the humidity information is less than the first preset value, it indicates that the current air humidity is less, the first valve 131 is closed, the second valve 31 is opened, the air passing through the dust removing chamber 7 and the first dehumidifying box 1 enters the bypass pipe 3 and is discharged, and the air is subjected to primary heat exchange with the air, so that the bypass pipe 3 reduces the wind resistance of the air passing through the second dehumidifying box 2 while the air with the corresponding humidity is fully dehumidified.
In order to perform dehumidification in a more subdivided level according to the humidity of the air, referring to fig. 1, in the embodiment of the present invention, a second pipe 14 is provided between the first dehumidification tank 1 and the dust removal chamber 7, a third valve 141 is provided on the second pipe 14, the bypass pipe 3 is communicated with the second pipe 14, and the communication position of the third valve 141 is located on the side away from the first dehumidification tank 1, a fourth valve 32 is provided at the communication position of the bypass pipe 3 and the second pipe 14, and a fifth valve 33 is further provided between the bypass pipe 3 and the second valve 31; the control unit 6 is also adapted to: when the humidity information is greater than the second preset value and less than the first preset value, the third valve 141 and the fifth valve 33 are controlled to be opened and the fourth valve 32 is controlled to be closed, when the humidity information is less than the second preset value, the third valve 141 and the fifth valve 33 are controlled to be closed and the fourth valve 32 is controlled to be opened, and the first preset value is greater than the second preset value and is a positive number.
Referring to fig. 3, the control unit 6 includes a first comparator OA2, a first transistor Q2 and a second electromagnetic relay KV2, wherein a non-inverting input terminal of the first comparator OA2 is connected to an output terminal of the first humidity sensor P, and an inverting input terminal of the first comparator OA2 is connected to a second preset value Vref 2; the first triode Q2 is an NPN triode which is conducted in response to a high level, the output end of the first comparator OA2 is connected to the base electrode of the first triode Q2, the coil of the second electromagnetic relay KV2 is connected to the emitting electrode of the first triode Q2, the normally open contact KV2-1 of the second electromagnetic relay is connected to the loop where the third valve is located, the normally closed contact KV2-2 of the second electromagnetic relay is connected to the loop where the fifth valve is located, the normally closed contact KV2-3 of the second electromagnetic relay is connected to the loop where the fourth valve is located, and the third valve, the fourth valve and the fifth valve are all electrically controlled valves.
The working principle of the dehumidification system is as follows: for example, the second preset value is 5 (humidity unit), when the humidity information is greater than the second preset value and less than the first preset value, the third valve 141 is opened, the fifth valve 33 and the second valve 31 are opened, and at this time, the external air is subjected to heat exchange dehumidification only through the first heat exchanger 11; when the humidity information is greater than the first preset value, the third valve 141, the fifth valve 33 (the second valve 31 is closed) and the first valve 131 are opened, and the external air exchanges heat with the first heat exchanger 11 and the second heat exchanger 21; when the humidity information is less than the second preset value, the fourth valve 32 is opened, the third valve 141 and the fifth valve 33 are closed, and the air directly enters the blast furnace blower from the bypass pipe 3 after being dedusted by the dedusting chamber 7, so that the wind resistance is reduced when the air is not required to be dehumidified.
In order to monitor the dehumidification effect, referring to fig. 1, in the embodiment of the present application, the second humidity sensor 23 is disposed at the air outlet of the second dehumidification box 2, and the third humidity sensor 34 is disposed at the air outlet of the bypass pipe 3. Second humidity transducer 23 and third humidity transducer 34 all can adopt wireless sensor to send humidity signal to remote monitering system, be convenient for the staff to detect the air humidity condition after the dehumidification through second humidity transducer 23 and third humidity transducer 34.
Referring to fig. 2, further, the embodiment of the present application further includes a first indicator light and a second indicator light connected to the control unit 6, when the first valve 131 is opened, the control unit 6 controls the first indicator light to light, and when the third valve 141 is opened, the control unit 6 controls the second indicator light to light. The first indicator light and the second indicator light are convenient for workers to observe the air circulation passage.
The implementation principle of the embodiment of the application is as follows: when the humidity information is greater than the second preset value and less than the first preset value, the third valve 141 is opened, the fifth valve 33 and the second valve 31 are opened, and at this time, the external air is subjected to heat exchange dehumidification only through the first heat exchanger 11; when the humidity information is greater than the first preset value, the third valve 141, the fifth valve 33 (the second valve 31 is closed) and the first valve 131 are opened, the outside air exchanges heat with the first heat exchanger 11 and the second heat exchanger 21, and the air is fully dehumidified and the wind resistance is reduced; when the humidity information is less than the second preset value, the fourth valve 32 is opened, the third valve 141 and the fifth valve 33 are closed, and the air directly enters the blast furnace blower from the bypass pipe 3 after being dedusted by the dedusting chamber 7, so that the wind resistance is reduced when the air is not required to be dehumidified.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. A blast furnace blower dehumidification system, comprising: the device comprises a first dehumidification box (1), a second dehumidification box (2), a bypass pipe (3) and a collection box (4), wherein a first heat exchanger (11) is arranged in the first dehumidification box (1), a second heat exchanger (21) is arranged in the second dehumidification box (2), the first dehumidification box (1) is communicated with the second dehumidification box (2) and is provided with a first pipeline (13), a dust removal chamber (7) is arranged on the air inlet side, away from the second dehumidification box (2), of the first dehumidification box (1), a first valve (131) is arranged on the first pipeline (13), the bypass pipe (3) is communicated with the first pipeline (13), the communication position of the bypass pipe is located on one side, away from the second dehumidification box (2), of the first valve (131), a second valve (31) is arranged on the bypass pipe (3), and the first dehumidification box (1) and the second dehumidification box (2) are both communicated with the collection box (4);
the dehumidifying system further includes:
the first humidity sensor (5) is arranged at an air inlet of the first dehumidification box (1) and used for detecting the humidity at the air inlet of the first dehumidification box (1) and outputting humidity information;
and the control unit (6) is connected with the first humidity sensor (5), controls the first valve (131) to be opened and controls the second valve (31) to be closed when the humidity information is greater than a first preset value, and controls the first valve (131) to be closed and controls the second valve (31) to be opened when the humidity information is less than the first preset value.
2. The blast furnace blower dehumidifying system of claim 1, wherein a second pipeline (14) is arranged between the first dehumidifying tank (1) and the dust chamber (7), a third valve (141) is arranged on the second pipeline (14), the bypass pipe (3) is communicated with the second pipeline (14) and the communication position is positioned at one side of the third valve (141) far away from the first dehumidifying tank (1), a fourth valve (32) is arranged at the communication position of the bypass pipe (3) and the second pipeline (14), and a fifth valve (33) is arranged between the bypass pipe (3) and the second valve (31);
the control unit (6) is further configured to: when the humidity information is larger than a second preset value and smaller than a first preset value, the third valve (141) and the fifth valve (33) are controlled to be opened, the fourth valve (32) is controlled to be closed, when the humidity information is smaller than the second preset value, the third valve (141) and the fifth valve (33) are controlled to be closed, the fourth valve (32) is controlled to be opened, and the first preset value is larger than the second preset value.
3. A blast furnace blower dehumidifying system as claimed in claim 1 wherein a first demister (12) is provided in the first dehumidifying tank (1) and a second demister (22) is provided in the second dehumidifying tank (2).
4. The blast furnace blower dehumidifying system according to claim 1, wherein a second humidity sensor (23) is provided at an outlet of the second dehumidifying tank (2), and a third humidity sensor (34) is provided at an outlet of the bypass duct (3).
5. The blast furnace blower dehumidifying system as claimed in claim 2, further comprising a first indicator light and a second indicator light connected to the control unit (6);
when the first valve (131) is opened, the control unit (6) controls the first indicator light to light;
when the third valve (141) is opened, the control unit (6) controls the second indicator light to light.
6. A blast furnace blower dehumidifying system as claimed in claim 1 wherein the inlet of the dust chamber (7) is provided with a dust sensor (71).
7. The blast furnace blower dehumidifying system as claimed in claim 1, wherein the heat exchanger is any one of a cold water heat exchanger and a brine heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121853955.3U CN215288862U (en) | 2021-08-09 | 2021-08-09 | Dehumidification system of blast furnace blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121853955.3U CN215288862U (en) | 2021-08-09 | 2021-08-09 | Dehumidification system of blast furnace blower |
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| Publication Number | Publication Date |
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| CN215288862U true CN215288862U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121853955.3U Active CN215288862U (en) | 2021-08-09 | 2021-08-09 | Dehumidification system of blast furnace blower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875191A (en) * | 2022-05-25 | 2022-08-09 | 广州滨横低碳科技有限公司 | Blast furnace blast dehumidifier with self-cleaning function |
-
2021
- 2021-08-09 CN CN202121853955.3U patent/CN215288862U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875191A (en) * | 2022-05-25 | 2022-08-09 | 广州滨横低碳科技有限公司 | Blast furnace blast dehumidifier with self-cleaning function |
| CN114875191B (en) * | 2022-05-25 | 2023-07-14 | 广州滨横低碳科技有限公司 | Blast furnace blast dehumidifier with self-cleaning function |
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