CN218969279U - Dehumidification system for blast furnace - Google Patents
Dehumidification system for blast furnace Download PDFInfo
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- CN218969279U CN218969279U CN202220684454.5U CN202220684454U CN218969279U CN 218969279 U CN218969279 U CN 218969279U CN 202220684454 U CN202220684454 U CN 202220684454U CN 218969279 U CN218969279 U CN 218969279U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model relates to a dehumidification system for a blast furnace, which comprises a first dehumidification unit, a second dehumidification unit and a heating unit which are sequentially arranged; the first dehumidification unit comprises a first water chilling unit, a first cooling heat exchanger and a first heat preservation water tank, the first water chilling unit comprises a first evaporator and a first condenser, the first evaporator is connected with the first cooling heat exchanger through a first water pipe, the first cooling heat exchanger is connected with the first heat preservation water tank through a second water pipe, the first heat preservation water tank is connected with the first evaporator through a third water pipe, the dehumidification system for the blast furnace realizes multiple condensation dehumidification of air, the dehumidification effect is improved, in addition, the heating function of the dehumidified air is realized, the temperature of the dehumidified air is prevented from being reduced and directly entering the blast furnace to influence the internal temperature of the blast furnace, and the heat is reused by absorbing the heat on the second evaporator and transferring the heat to the heating heat exchanger, so that energy is saved.
Description
Technical Field
The utility model relates to a dehumidification system for a blast furnace, and belongs to the technical field of blast furnace dehumidification.
Background
The blast furnace uses steel plate as furnace shell, and the inside of the shell is lined with refractory bricks. The blast furnace body is divided into a furnace throat, a furnace body, a furnace waist, a furnace belly and a furnace hearth 5 from top to bottom. The method has the advantages of good economic index, simple process, high yield, high labor production efficiency, low energy consumption and the like, so that the iron produced by the method accounts for the vast majority of the total world iron yield.
Air is used as a raw material for blast furnace ironmaking, the water content of the air is controlled, the method is an effective measure for improving the coal injection ratio and realizing energy saving of blast furnace ironmaking, the water content in the air is controlled to be more ideal at the suction inlet end of the hot blast stove, and the moisture content (humidity) of the air entering the hot blast stove is treated by a dehumidifying device.
When the existing condensing type dehumidifying device dehumidifies air, the air is usually condensed only once, so that the air is not dehumidified well, and the humidity in the air still cannot meet the requirements, so that a dehumidifying system for a blast furnace is needed, and the dehumidifying effect is improved.
Disclosure of Invention
The utility model aims to solve the technical problems that: in order to overcome the defects in the prior art, a dehumidification system for a blast furnace is provided.
The utility model solves the problems by adopting the following technical scheme: a dehumidification system for a blast furnace comprises a first dehumidification unit, a second dehumidification unit and a heating unit which are sequentially arranged;
the first dehumidification unit comprises a first water chilling unit, a first cooling heat exchanger and a first heat preservation water tank, wherein the first water chilling unit comprises a first evaporator and a first condenser, the first evaporator is connected with the first cooling heat exchanger through a first water pipe, the first cooling heat exchanger is connected with the first heat preservation water tank through a second water pipe, the first heat preservation water tank is connected with the first evaporator through a third water pipe, and the first condenser is connected with a cooling assembly;
the second dehumidification unit comprises a second water chilling unit and a second cooling heat exchanger, the second water chilling unit comprises a second evaporator and a second condenser, the second evaporator is connected with the second cooling heat exchanger through a fourth water pipe, the second cooling heat exchanger is connected with the first heat preservation water tank through a fifth water pipe, and the first heat preservation water tank is connected with the second evaporator through a sixth water pipe;
the heating unit comprises a heating heat exchanger, a heating assembly is arranged on the heating heat exchanger, and the heating heat exchanger is connected with the second condenser through the heating assembly.
Preferably, the temperature of the first heat preservation water tank is 8-10 ℃.
Preferably, the cooling assembly comprises a cooling tower, the water inlet end of the cooling tower is connected with the first condenser through a seventh water pipe, and the water outlet end of the cooling tower is connected with the first condenser through an eighth water pipe.
Preferably, the cooling tower is an open cooling tower.
Preferably, the heating assembly comprises a second heat preservation water tank, the water outlet end of the second heat preservation water tank is connected with a second condenser through a ninth water pipe, the second condenser is connected with a heating heat exchanger through a tenth water pipe, and the heating heat exchanger is connected with the water inlet end of the second heat preservation water tank through an eleventh water pipe.
Preferably, the water inlet end of the second heat preservation water tank is higher than the water outlet end of the second heat preservation water tank.
Preferably, the tenth water pipe is provided with a water pump, a check valve and two manual gate valves.
Preferably, the water pump and the check valve are both located between two manual gate valves.
Preferably, the temperature of the second heat preservation water tank is 22.5-23.5 ℃.
Preferably, the temperature of the second heat preservation water tank is 23 ℃.
Compared with the prior art, the utility model has the advantages that:
the dehumidification system for the blast furnace provided by the utility model realizes multiple condensation and dehumidification of air, improves the dehumidification effect, realizes the heating function of dehumidified air, prevents the temperature of dehumidified air from being reduced and directly enters the blast furnace to influence the internal temperature of the blast furnace, and realizes the reutilization of heat and saves energy by absorbing the heat on the second evaporator and transmitting the heat to the heating heat exchanger.
Drawings
FIG. 1 is a schematic view showing a structure of a dehumidifying system for a blast furnace according to the present utility model;
fig. 2 is a schematic structural view of a tenth water pipe.
Wherein: 1. the system comprises a first water chilling unit, 101, a first evaporator, 102, a first condenser, 2, a first cooling heat exchanger, 3, a first heat preservation water tank, 4, a first water pipe, 5, a second water pipe, 6, a third water pipe, 7, a second water chilling unit, 701, a second evaporator, 702, a second condenser, 8, a second cooling heat exchanger, 9, a fourth water pipe, 10, a fifth water pipe, 11, a sixth water pipe, 12, a heating heat exchanger, 13, a cooling tower, 14, a seventh water pipe, 15, an eighth water pipe, 16, a second heat preservation water tank, 17, a ninth water pipe, 18, a tenth water pipe, 19, an eleventh water pipe water pump, 20, a check valve and 21.
Detailed Description
As shown in fig. 1-2, a dehumidifying system for a blast furnace according to the present embodiment includes a first dehumidifying unit, a second dehumidifying unit, and a heating unit, which are sequentially disposed;
the first dehumidification unit comprises a first water chilling unit 1, a first cooling heat exchanger 2 and a first heat preservation water tank 3, wherein the first water chilling unit 1 comprises a first evaporator 101 and a first condenser 102, the first evaporator 101 is connected with the first cooling heat exchanger 2 through a first water pipe 4, the first cooling heat exchanger 2 is connected with the first heat preservation water tank 3 through a second water pipe 5, the first heat preservation water tank 3 is connected with the first evaporator 101 through a third water pipe 6, and a cooling assembly is connected to the first condenser 102;
the air flows to the first cooling heat exchanger 2, and after the water in the first heat preservation water tank 3 is conveyed to the first evaporator 101 from the third water pipe 6, the water in the first cooling heat exchanger 2 is conveyed to the first cooling heat exchanger 2 through the first water pipe 4, the water in the first cooling heat exchanger 2 flows back to the first heat preservation water tank 3 from the second water pipe 5, the circulation is performed, the heat in the water is absorbed through the first evaporator 101, the cooling of the water is realized, the temperature in the air is transferred to the water in the first cooling heat exchanger 2, the cooling of the air is realized, the moisture in the air is condensed into liquid water, primary dehumidification is realized, the heat absorbed by the first evaporator 101 is transferred to the first condenser 102, the cooling of the first condenser 102 is realized through the cooling component, the heat absorbing capacity of the water is improved, and the condensing and dehumidifying effect of the air is improved.
The second dehumidification unit comprises a second water chilling unit 7 and a second cooling heat exchanger 8, the second water chilling unit 7 comprises a second evaporator 701 and a second condenser 702, the second evaporator 701 is connected with the second cooling heat exchanger 8 through a fourth water pipe 9, the second cooling heat exchanger 8 is connected with the first heat preservation water tank 3 through a fifth water pipe 10, and the first heat preservation water tank 3 is connected with the second evaporator 701 through a sixth water pipe 11;
the primary condensed air flows to the second cooling heat exchanger 8, and water in the second evaporator 701 is conveyed to the second cooling heat exchanger 8 from the fourth water pipe 9 by conveying the water in the first cooling heat exchanger 3 from the sixth water pipe 11, and the water in the second cooling heat exchanger 8 flows back to the first cooling heat exchanger 8 through the fifth water pipe 10, so that the primary condensed air circulates, the heat in the water is absorbed by the second evaporator 701, the cooling of the water is realized, and the temperature in the air is cooled again when being transferred to the water in the second cooling heat exchanger 8, so that the water in the air is continuously condensed into liquid water, the secondary dehumidification is realized, and the air dehumidifying effect is improved.
The heating unit comprises a heating heat exchanger 12, a heating component is arranged on the heating heat exchanger 12, and the heating heat exchanger 12 is connected with a second condenser 702 through the heating component.
The heat absorbed by the second evaporator 701 is transferred to the second condenser 702, the second condenser 702 is transferred to the heating heat exchanger 12 through the heating component, so that the temperature of the heating heat exchanger 12 is increased, when the secondarily dehumidified air flows to the heating heat exchanger 12, the heat on the heating heat exchanger 12 is absorbed, the heating of the secondarily dehumidified air is realized, the air temperature after the secondary dehumidification is prevented from entering the blast furnace to influence the internal temperature of the blast furnace, and the capacity of the second condenser 702 for absorbing the heat on the second evaporator 701 can be improved by transferring the heat on the second condenser 702 to the heating heat exchanger 12, so that the capacity of the second evaporator 701 for cooling water can be improved, namely, the temperature of the second cooling heat exchanger 8 is reduced, and the secondary dehumidification effect is further improved.
Preferably, the temperature of the first heat-insulating water tank 3 is 8 ℃ to 10 ℃.
Preferably, the cooling assembly comprises a cooling tower 13, the water inlet end of the cooling tower 13 is connected with the first condenser 102 through a seventh water pipe 14, and the water outlet end of the cooling tower 13 is connected with the first condenser 102 through an eighth water pipe 15.
The water in the first condenser 102 is conveyed to the cooling tower 13 from the first water pipe 4, is cooled by the cooling tower 13, and then flows back into the first condenser 102 from the eighth water pipe 15, so that the temperature of the first condenser 102 is reduced.
Preferably, the cooling tower 13 is an open cooling tower.
Preferably, the heating assembly comprises a second heat preservation water tank 16, a water outlet end of the second heat preservation water tank 16 is connected with a second condenser 702 through a ninth water pipe 17, the second condenser 702 is connected with a heating heat exchanger 12 through a tenth water pipe 18, and the heating heat exchanger 12 is connected with a water inlet end of the second heat preservation water tank 16 through an eleventh water pipe 19.
The water in the second heat preservation box is conveyed to the second condenser 702 from the ninth water pipe 17, the heat absorbed by the second evaporator 701 is transferred to the water in the second condenser 702, heating of the water is achieved, meanwhile cooling of the second evaporator 701 is achieved, the heated water is conveyed to the temperature rising heat exchanger 12 from the tenth water pipe 18, heat is transferred to the air subjected to secondary dehumidification through the temperature rising heat exchanger 12, heating of the air is achieved, and the water in the temperature rising heat exchanger 12 flows back to the second heat preservation water tank 16 from the eleventh water pipe 19.
Preferably, the water inlet end of the second heat preservation water tank 16 is higher than the water outlet end of the second heat preservation water tank 16.
Preferably, the tenth water pipe 18 is provided with a water pump 20, a check valve 21 and two manual gate valves 22.
The water pump 20 is started to transfer the water in the second condenser 702 from the tenth water pipe 18 to the temperature raising heat exchanger 12, the water in the tenth water pipe 18 is prevented from flowing back by the check valve 21, and the opening and closing of the tenth water pipe 18 is controlled by the two manual gate valves 22.
Preferably, the water pump 20 and the check valve 21 are both located between two manual gate valves 22.
Preferably, the temperature of the second holding tank 16 is 22.5 ℃ to 23.5 ℃.
Preferably, the temperature of the second holding tank 16 is 23 ℃.
In addition to the above embodiments, the present utility model also includes other embodiments, and all technical solutions that are formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present utility model.
Claims (10)
1. A dehumidification system for a blast furnace, characterized by: the device comprises a first dehumidification unit, a second dehumidification unit and a heating unit which are sequentially arranged;
the first dehumidification unit comprises a first water chilling unit (1), a first cooling heat exchanger (2) and a first heat preservation water tank (3), the first water chilling unit (1) comprises a first evaporator (101) and a first condenser (102), the first evaporator (101) is connected with the first cooling heat exchanger (2) through a first water pipe (4), the first cooling heat exchanger (2) is connected with the first heat preservation water tank (3) through a second water pipe (5), the first heat preservation water tank (3) is connected with the first evaporator (101) through a third water pipe (6), and a cooling assembly is connected to the first condenser (102);
the second dehumidification unit comprises a second water chilling unit (7) and a second cooling heat exchanger (8), the second water chilling unit (7) comprises a second evaporator (701) and a second condenser (702), the second evaporator (701) is connected with the second cooling heat exchanger (8) through a fourth water pipe (9), the second cooling heat exchanger (8) is connected with the first heat preservation water tank (3) through a fifth water pipe (10), and the first heat preservation water tank (3) is connected with the second evaporator (701) through a sixth water pipe (11);
the heating unit comprises a heating heat exchanger (12), a heating component is arranged on the heating heat exchanger (12), and the heating heat exchanger (12) is connected with a second condenser (702) through the heating component.
2. A dehumidification system for a blast furnace according to claim 1, wherein: the temperature of the first heat preservation water tank (3) is 8-10 ℃.
3. A dehumidification system for a blast furnace according to claim 1, wherein: the cooling assembly comprises a cooling tower (13), wherein the water inlet end of the cooling tower (13) is connected with the first condenser (102) through a seventh water pipe (14), and the water outlet end of the cooling tower (13) is connected with the first condenser (102) through an eighth water pipe (15).
4. A dehumidification system for a blast furnace according to claim 3, wherein: the cooling tower (13) is an open cooling tower.
5. A dehumidification system for a blast furnace according to claim 1, wherein: the heating assembly comprises a second heat preservation water tank (16), the water outlet end of the second heat preservation water tank (16) is connected with a second condenser (702) through a ninth water pipe (17), the second condenser (702) is connected with a heating heat exchanger (12) through a tenth water pipe (18), and the heating heat exchanger (12) is connected with the water inlet end of the second heat preservation water tank (16) through an eleventh water pipe (19).
6. A dehumidification system for a blast furnace as set forth in claim 5, wherein: the water inlet end of the second heat preservation water tank (16) is higher than the water outlet end of the second heat preservation water tank (16).
7. A dehumidification system for a blast furnace as set forth in claim 5, wherein: a water pump (20), a check valve (21) and two manual gate valves (22) are arranged on the tenth water pipe (18).
8. A dehumidification system for a blast furnace as set forth in claim 7, wherein: the water pump (20) and the check valve (21) are both positioned between the two manual gate valves (22).
9. A dehumidification system for a blast furnace as set forth in claim 5, wherein: the temperature of the second heat preservation water tank (16) is 22.5-23.5 ℃.
10. A dehumidification system for a blast furnace according to claim 9, wherein: the temperature of the second heat preservation water tank (16) is 23 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220684454.5U CN218969279U (en) | 2022-03-28 | 2022-03-28 | Dehumidification system for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220684454.5U CN218969279U (en) | 2022-03-28 | 2022-03-28 | Dehumidification system for blast furnace |
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| Publication Number | Publication Date |
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| CN218969279U true CN218969279U (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220684454.5U Active CN218969279U (en) | 2022-03-28 | 2022-03-28 | Dehumidification system for blast furnace |
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| CN (1) | CN218969279U (en) |
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2022
- 2022-03-28 CN CN202220684454.5U patent/CN218969279U/en active Active
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