CN218969280U - Blast furnace dehumidification system - Google Patents
Blast furnace dehumidification system Download PDFInfo
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- CN218969280U CN218969280U CN202220684455.XU CN202220684455U CN218969280U CN 218969280 U CN218969280 U CN 218969280U CN 202220684455 U CN202220684455 U CN 202220684455U CN 218969280 U CN218969280 U CN 218969280U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model relates to a blast furnace dehumidification system, which comprises a cooling device and a heating device; the cooling device comprises a cooling heat exchanger, a heat preservation water tank and a water chilling unit, wherein the water chilling unit comprises an evaporator and a condenser, the water outlet end of the evaporator is connected with the water inlet end of the cooling heat exchanger through a first water pipe, the water outlet end of the cooling heat exchanger is connected with the water inlet end of the heat preservation water tank through a second water pipe, and the water outlet end of the heat preservation water tank is connected with the water inlet end of the evaporator through a third water pipe; this blast furnace dehumidification system has realized the heating to the air after the dehumidification, prevents that the air temperature from reducing and influencing blast furnace internal temperature after the dehumidification, and in addition, heats the water in the condenser through the heat that absorbs in the evaporimeter, has realized heat recovery and has recycled, has practiced thrift the energy.
Description
Technical Field
The utility model relates to a blast furnace dehumidification system, 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.
The existing blast furnace dehumidification system generally adopts a heat exchanger to absorb heat in air to reduce the air temperature, so that water vapor in the air is condensed into liquid water, the humidity in the air is reduced, the air dehumidification is realized, the condensed air temperature is reduced, and the temperature inside the blast furnace is influenced after entering a furnace body, so that the blast furnace dehumidification system is needed, the air after dehumidification is heated, and the influence on the temperature inside the blast furnace is avoided.
Disclosure of Invention
The utility model aims to solve the technical problems that: in order to overcome the defects in the prior art, a blast furnace dehumidification system is provided.
The utility model solves the problems by adopting the following technical scheme: a blast furnace dehumidification system comprises a cooling device and a heating device;
the cooling device comprises a cooling heat exchanger, a heat preservation water tank and a water chilling unit, wherein the water chilling unit comprises an evaporator and a condenser, the water outlet end of the evaporator is connected with the water inlet end of the cooling heat exchanger through a first water pipe, the water outlet end of the cooling heat exchanger is connected with the water inlet end of the heat preservation water tank through a second water pipe, and the water outlet end of the heat preservation water tank is connected with the water inlet end of the evaporator through a third water pipe;
the temperature rising device comprises a temperature rising heat exchanger, a circulating water tank and a cooling assembly, wherein the water outlet end of the condenser is connected with the water inlet end of the temperature rising heat exchanger through a fourth water pipe, the water outlet pipe of the temperature rising heat exchanger is connected with the water inlet end of the circulating water tank through the cooling assembly, and the water outlet end of the circulating water tank is connected with the water inlet end of the condenser through a fifth water pipe.
Preferably, the third water pipe is provided with a first water pump, a first check valve and two first manual gate valves.
Preferably, the first water pump and the first check valve are located between two first manual gate valves.
Preferably, the water inlet end of the heat preservation water tank is higher than the water outlet end of the heat preservation water tank.
Preferably, the temperature of the heat preservation water tank is 8-10 ℃.
Preferably, a second water pump, a second check valve and a second manual gate valve are mounted on the fifth water pipe.
Preferably, the cooling component is a cooling tower, the water outlet end of the heating heat exchanger is connected with the water inlet end of the cooling tower through a sixth water pipe, and the water outlet end of the cooling tower is connected with the water inlet end of the circulating water tank through a seventh water pipe.
Preferably, the cooling tower is a closed cooling tower.
Preferably, the temperature of the circulation tank is 32 ℃.
Preferably, the water inlet end of the circulating water tank is higher than the water outlet end of the circulating water tank.
Compared with the prior art, the utility model has the advantages that:
the blast furnace dehumidification system provided by the utility model has the advantages that the dehumidified air is heated, the influence on the internal temperature of the blast furnace caused by the temperature reduction of the dehumidified air is prevented, the heat absorbed by the evaporator is heated to the water in the condenser, the heat recovery and the reutilization are realized, and the energy is saved.
Drawings
FIG. 1 is a schematic diagram of a blast furnace dehumidification system according to the present disclosure;
FIG. 2 is a schematic view of a third water pipe;
fig. 3 is a schematic structural view of a fifth water pipe.
Wherein: 1. the cooling heat exchanger, 2, a heat preservation water tank, 3, a water chilling unit, 301, an evaporator, 302, a condenser, 4, a first water pipe, 5, a second water pipe, 6, a third water pipe, 7, a heat preservation heat exchanger, 8, a circulating water tank, 9, a fourth water pipe, 10, a fifth water pipe, 11, a first water pump, 12, a first check valve, 13, a first manual gate valve, 14, a second water pump, 15, a second check valve, 16, a second manual gate valve, 17, a cooling tower, 18, a sixth water pipe and 19, a seventh water pipe.
Detailed Description
As shown in fig. 1 to 3, a blast furnace dehumidification system in this embodiment includes a temperature reducing device and a temperature increasing device;
the cooling device comprises a cooling heat exchanger 1, a heat preservation water tank 2 and a water chilling unit 3, wherein the water chilling unit 3 comprises an evaporator 301 and a condenser 302, the water outlet end of the evaporator 301 is connected with the water inlet end of the cooling heat exchanger 1 through a first water pipe 4, the water outlet end of the cooling heat exchanger 1 is connected with the water inlet end of the heat preservation water tank 2 through a second water pipe 5, and the water outlet end of the heat preservation water tank 2 is connected with the water inlet end of the evaporator 301 through a third water pipe 6;
the temperature rising device comprises a temperature rising heat exchanger 7, a circulating water tank 8 and a cooling assembly, wherein the water outlet end of the condenser 302 is connected with the water inlet end of the temperature rising heat exchanger 7 through a fourth water pipe 9, the water outlet pipe of the temperature rising heat exchanger 7 is connected with the water inlet end of the circulating water tank 8 through the cooling assembly, and the water outlet end of the circulating water tank 8 is connected with the water inlet end of the condenser 302 through a fifth water pipe 10.
The air flows through the cooling heat exchanger 1 and the heating heat exchanger 7 in sequence, during the period, the water in the heat preservation water tank 2 is conveyed to the evaporator 301 from the third water pipe 6, the evaporator 301 absorbs heat in the water to realize cooling of the water, then the cooled water is conveyed to the cooling heat exchanger 1 from the first water pipe 4, the water in the cooling heat exchanger 1 is returned to the heat preservation water tank 2 from the second water pipe 5, the heat in the air is transferred to the cooling heat exchanger 1 and absorbed by the water, the temperature of the air is reduced, water vapor in the air is condensed into liquid water, thereby reducing the humidity in the air, realizing dehumidification of the air, and the water in the circulating water is conveyed to the condenser 302 from the fifth water pipe 10, the heat absorbed by the evaporator 301 is transferred to the water of the condenser 302 to heat the water, the heated water is then transferred to the heating heat exchanger 7 through the fourth water pipe 9, the water in the heating heat exchanger 7 flows back to the circulating water tank 8 through the cooling component, the temperature of the water in the heating heat exchanger 7 is transferred to the air to heat the air, and therefore the influence of the cooled air on the internal temperature of the blast furnace due to the fact that the cooled air directly enters the blast furnace can be avoided, and the cooling component is used for reducing the temperature of the water when the water enters the circulating water tank 8 and avoiding that the temperature in the circulating water tank 8 is higher than the limit temperature of the condenser 302.
Preferably, the third water pipe 6 is provided with a first water pump 11, a first check valve 12 and two first manual gate valves 13.
During the starting period of the first water pump 11, water in the heat preservation water tank 2 is conveyed to the evaporator 301 from the third water pipe 6, the water in the third water pipe 6 is prevented from flowing back through the first check valve 12, and the opening and closing of the third water pipe 6 are controlled through the two first manual gate valves 13.
Preferably, the first water pump 11 and the first check valve 12 are located between two first manual gate valves 13.
Preferably, the water inlet end of the heat preservation water tank 2 is higher than the water outlet end of the heat preservation water tank 2.
Preferably, the temperature of the heat preservation water tank 2 is 8-10 ℃.
Preferably, the fifth water pipe 10 is provided with a second water pump 14, a second check valve 15 and a second manual gate valve 16.
During the start-up of the second water pump 14, the water in the circulation tank 8 is sent from the fifth water pipe 10 to the condenser 302, the water in the fifth water pipe 10 is prevented from flowing back by the second check valve 15, and the opening and closing of the fifth water pipe 10 is controlled by the second manual gate valve 16.
Preferably, the cooling component is a cooling tower 17, the water outlet end of the temperature rising heat exchanger 7 is connected with the water inlet end of the cooling tower 17 through a sixth water pipe 18, and the water outlet end of the cooling tower 17 is connected with the water inlet end of the circulating water tank 8 through a seventh water pipe 19.
The water in the temperature rising heat exchanger 7 is conveyed to the cooling tower 17 through the sixth water pipe 18, cooled by the cooling tower 17 and then conveyed to the circulating water tank 8 from the seventh water pipe 19, so that the temperature in the circulating water tank 8 is prevented from being higher than the limit temperature of the condenser 302.
Preferably, the cooling tower 17 is a closed cooling tower.
Preferably, the temperature of the circulation tank 8 is 32 ℃.
Preferably, the water inlet end of the circulating water tank 8 is higher than the water outlet end of the circulating water tank 8.
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 blast furnace dehumidification system, characterized in that: comprises a cooling device and a heating device;
the cooling device comprises a cooling heat exchanger (1), a heat preservation water tank (2) and a water chilling unit (3), wherein the water chilling unit (3) comprises an evaporator (301) and a condenser (302), the water outlet end of the evaporator (301) is connected with the water inlet end of the cooling heat exchanger (1) through a first water pipe (4), the water outlet end of the cooling heat exchanger (1) is connected with the water inlet end of the heat preservation water tank (2) through a second water pipe (5), and the water outlet end of the heat preservation water tank (2) is connected with the water inlet end of the evaporator (301) through a third water pipe (6);
the temperature rising device comprises a temperature rising heat exchanger (7), a circulating water tank (8) and a cooling assembly, wherein the water outlet end of the condenser (302) is connected with the water inlet end of the temperature rising heat exchanger (7) through a fourth water pipe (9), the water outlet pipe of the temperature rising heat exchanger (7) is connected with the water inlet end of the circulating water tank (8) through the cooling assembly, and the water outlet end of the circulating water tank (8) is connected with the water inlet end of the condenser (302) through a fifth water pipe (10).
2. A blast furnace dehumidification system as set forth in claim 1, wherein: the third water pipe (6) is provided with a first water pump (11), a first check valve (12) and two first manual gate valves (13).
3. A blast furnace dehumidification system as set forth in claim 2, wherein: the first water pump (11) and the first check valve (12) are located between two first manual gate valves (13).
4. A blast furnace dehumidification system as set forth in claim 1, wherein: the water inlet end of the heat preservation water tank (2) is higher than the water outlet end of the heat preservation water tank (2).
5. A blast furnace dehumidification system as set forth in claim 1, wherein: the temperature of the heat preservation water tank (2) is 8-10 ℃.
6. A blast furnace dehumidification system as set forth in claim 1, wherein: the fifth water pipe (10) is provided with a second water pump (14), a second check valve (15) and a second manual gate valve (16).
7. A blast furnace dehumidification system as set forth in claim 1, wherein: the cooling assembly is a cooling tower (17), the water outlet end of the heating heat exchanger (7) is connected with the water inlet end of the cooling tower (17) through a sixth water pipe (18), and the water outlet end of the cooling tower (17) is connected with the water inlet end of the circulating water tank (8) through a seventh water pipe (19).
8. A blast furnace dehumidification system as set forth in claim 7, wherein: the cooling tower (17) is a closed cooling tower.
9. A blast furnace dehumidification system as set forth in claim 1, wherein: the temperature of the circulating water tank (8) is 32 ℃.
10. A blast furnace dehumidification system as set forth in claim 1, wherein: the water inlet end of the circulating water tank (8) is higher than the water outlet end of the circulating water tank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220684455.XU CN218969280U (en) | 2022-03-28 | 2022-03-28 | Blast furnace dehumidification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220684455.XU CN218969280U (en) | 2022-03-28 | 2022-03-28 | Blast furnace dehumidification system |
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| Publication Number | Publication Date |
|---|---|
| CN218969280U true CN218969280U (en) | 2023-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202220684455.XU Active CN218969280U (en) | 2022-03-28 | 2022-03-28 | Blast furnace dehumidification system |
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| CN (1) | CN218969280U (en) |
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2022
- 2022-03-28 CN CN202220684455.XU patent/CN218969280U/en active Active
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