CN210321256U - Refrigerating and heating system for aluminum smelting process waste heat - Google Patents
Refrigerating and heating system for aluminum smelting process waste heat Download PDFInfo
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- CN210321256U CN210321256U CN201921014222.3U CN201921014222U CN210321256U CN 210321256 U CN210321256 U CN 210321256U CN 201921014222 U CN201921014222 U CN 201921014222U CN 210321256 U CN210321256 U CN 210321256U
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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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
- Y02P10/25—Process efficiency
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Abstract
A refrigerating and heating system for waste heat of an aluminum smelting process relates to the energy-saving and environment-friendly field of smelting and casting processing processes of metal aluminum ingots. The smelting furnace is connected with a heat exchanger pipeline, the flue gas pipeline and a valve are arranged, the flue gas pipeline is connected with a chimney, the other side of the heat exchanger is connected with a water storage tank, the warm water type lithium bromide water chilling unit and the cooling tower are sequentially connected, the ash removal device is connected with the heat exchanger, the water quality device is respectively connected onto pipelines between the water storage tank and the warm water type lithium bromide water chilling unit, the warm water type lithium bromide water chilling unit and the cooling tower through pipelines, and a target object is connected with the water storage tank and the warm water type lithium bromide water chilling. The utility model discloses realize 400 supple with electricity utilization of low temperature waste heat flue gas in 600 ℃, fully consider many-sided factors such as heat transfer, corruption, deposition, deashing, efficiency, design, quality of water, control, can effectively solve present low temperature waste heat and not by complete recycle, the high temperature flue gas still has certain smoke and dust and corrosivity's problem.
Description
Technical Field
The utility model relates to a smelting of metal aluminium ingot and the energy-concerving and environment-protective field of casting processing technology, concretely relates to refrigeration heating system of technology waste heat is smelted to aluminium.
Background
With the development of economy, the aluminum product industry in China develops rapidly, for example, the aluminum utilization level in the field of automobile industry has a huge progress space, and in 2008, the yield of automobile hubs reaches 9456 ten thousand. The yield of the main domestic automobile hub enterprise in 2014 is about 2.08 hundred million pieces, which is 2.2 times that in 2008. The aluminum level has huge progress space and is expected to form a new breakthrough. The smelting and casting process of the metal aluminum ingot needs to be rapidly promoted, and therefore, the requirements of energy conservation and environmental protection are increased day by day.
In the smelting and casting processing technology of metal aluminum ingots in the aluminum product industry at present, high-temperature flue gas is generated after combustion in the smelting process of a smelting furnace, the temperature is generally 400-600 ℃, and most enterprises of the part of the flue gas are directly discharged through a flue. In the prior art, most of the waste heat of the metal smelting flue gas is recycled by using a waste heat boiler, only the waste heat of the high-temperature flue gas is recycled, the middle and low-temperature waste heat (600 ℃) is not completely recycled, a large amount of high-temperature flue gas is directly discharged without being utilized, and a large amount of heat is wasted. Is a very unfavorable situation for enterprise production.
Meanwhile, high-temperature flue gas generated after combustion in the smelting process of the smelting furnace also has certain smoke dust and certain corrosivity. After general heat exchange equipment or flue gas unit use, can take place to block up in the short time, the scale deposit, heat transfer effect decline even scrap scheduling problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the smelting furnace smelting process among the smelting of aluminium goods trade metal aluminium ingot and the casting processing technology, the waste heat utilization problem that produces the high temperature flue gas after the burning through the refrigeration heating system of an aluminium smelting technology waste heat, realizes 400 additionally and low temperature waste heat flue gas's in 600 degrees centigrade utilization to the heat of retrieving can be used for other technologies or travelling comfort demand, including refrigeration or heating etc.. The energy conservation and emission reduction are realized, various process or comfort requirements are realized, the enterprise cost is reduced, the thermal pollution is reduced, and multiple purposes are achieved.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a refrigerating and heating system for waste heat of an aluminum smelting process is characterized in that: the device comprises a smelting furnace, a heat exchanger, a chimney, a water storage tank, a warm water type lithium bromide water chilling unit, a cooling tower, an ash removal device, a water quality device and a related pump set; the smelting furnace is connected with a heat exchanger pipeline, meanwhile, the heat exchanger is provided with a pump set and a related water path, a flue gas pipeline and a valve, the flue gas pipeline is connected with a chimney, the other side of the heat exchanger is connected with a water storage tank through the related pipeline and the pump set valve, the water storage tank, the warm water type lithium bromide water chilling unit and the cooling tower are connected through the related pipeline and the pump set valve in sequence, the ash removal device is connected with the heat exchanger, the water quality device is connected to the water storage tank and the warm water type lithium bromide water chilling unit respectively through pipelines, and the warm water type lithium bromide water chilling unit and the cooling tower are connected through the related pipeline and the pump set valve respectively.
The water quality device is connected in front of pump set valves between the water storage tank and the warm water type lithium bromide water chilling unit, the warm water type lithium bromide water chilling unit and the cooling tower through pipelines respectively, the water quality device comprises a dosing device for water quality treatment of the water storage tank and water quality treatment in the cooling tower through dosing and a water softening device for supplying softened water to the water storage tank, and the dosing device and the water softening device are arranged independently.
Including automated inspection module, automatic deashing module, row's ash module and alarm module among the ash removal device, wherein:
the automatic detection module is positioned at the inlet, the outlet and the interior of the heat exchanger and is connected with the automatic dust cleaning module, the dust discharging module and the alarm module positioned in the system control cabinet, and the automatic dust cleaning module and the dust discharging module are communicated with the heat exchanger;
the automatic detection module is used for monitoring the pressure difference value of the flue gas system in real time, judging the blocking state of the system and transmitting data to the system control cabinet;
the automatic ash removal module is of a mechanical ash removal structure and comprises an ash storage mechanism and an ash removal interface, and the automatic ash removal module is used for receiving a signal when the pressure value reached by the automatic detection module is judged to be a slight ash deposition range value, and further starting the ash storage mechanism and the ash removal interface; the automatic ash removal module periodically cleans the interior of the heat exchanger;
the ash discharging module comprises an ash storage mechanism and an ash discharging interface and is used for receiving a signal when the pressure value reached by the automatic detection module is judged to be a serious ash deposition range value, further starting an alarm device of the alarm module, simultaneously opening the ash storage mechanism and the ash discharging interface, and after cleaning, the pressure difference value of the flue gas system is normal so as to recover the system operation;
the alarm module is used for receiving a signal when the automatic detection module detects that the pressure difference value of the smoke system exceeds the set pressure difference of the system, and then the alarm device is started to output an alarm signal.
The alarm device is a buzzer alarm and can be released manually.
The refrigeration and heating system is connected with the remote control system, the remote control system is located inside the control cabinet and is remotely connected with the remote control monitoring center through the internet through a network interface, data acquisition and remote uploading of the system are achieved, the running state of the system is judged according to data conditions, and the functions of remote monitoring, fault early warning and fault diagnosis are achieved.
The target object comprises an aluminum smelting plant and an aluminum smelting processing technology.
The specific principle of the utility model is that:
refrigeration is realized by a warm water type lithium bromide absorption unit. Specifically, the flue gas of a smelting furnace product is subjected to heat recovery through a heat exchange device, stored in intermediate medium water and circulated in a water storage tank system. The flue gas is communicated to a chimney for emission after heat exchange. The heat in the water storage tank is utilized by the warm water type lithium bromide absorption type unit, so that refrigeration is performed to do work. And the useless energy is transferred to the cooling tower through the pump set and is dissipated. The refrigeration purpose is achieved. The system is a flue gas waste heat utilization refrigerating system;
the smelting furnace is connected with a heat exchanger pipeline, and is provided with a pump set, a relevant water path and a flue valve, wherein a flue gas pipeline is connected with a chimney. The other side of the heat exchanger is connected with the water storage tank through a related pipeline and a pump set valve. The water storage tank is connected with a target object through a related pipeline and a pump set valve, and the heating function is realized through a flue gas heat exchange and hot water circulating water system. This is flue gas waste heat utilization system of heating. The water storage tank is suitable for winter or other working conditions requiring heat or hot water, and heat is output outwards through connection of the water storage tank. Thereby realizing the purpose of heat supply.
In addition, the system is also provided with a dust cleaning device, and different actions can be realized before, during and after starting. And realizing purging. The system monitors the pressure difference between the inlet and the outlet of the flue gas system in real time at ordinary times and judges the blocking state of the system. And if the blockage occurs, alarming. Meanwhile, a water quality management system is arranged on the water system and comprises water quality treatment equipment such as a dosing device and a water softener, so that the water quality of hot water after heat exchange of flue gas and cooling water of a bromine cooling unit is controlled, the problems of scaling, blockage and the like are prevented, heat exchange is prevented, and the efficiency of the system is reduced.
The utility model has the effects that: the utilization of the low-temperature waste heat flue gas at the temperature of 400 plus one year and 600 ℃ is realized, the factors in multiple aspects such as heat exchange, corrosion, ash deposition, ash removal, efficiency, design, water quality, control and the like are fully considered, and the problems that the existing low-temperature waste heat is not completely recycled and the high-temperature flue gas has certain smoke dust and corrosivity can be effectively solved.
Drawings
FIG. 1 is a schematic view of the discharge of a conventional smelting furnace;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view showing the connection of the modules of the ash removal device;
in the figure: the device comprises a smelting furnace 1, a heat exchanger 2, a chimney 3, a water storage tank 4, a warm water type lithium bromide water chilling unit 5, a cooling tower 6, a target object 7, an ash removal device 8, an automatic detection module 81, an automatic ash removal module 82, an ash discharge module 83, an alarm module 84 and a water quality device 9.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 2, a refrigerating and heating system for waste heat of an aluminum smelting process comprises a smelting furnace 1, a heat exchanger 2, a chimney 3, a water storage tank 4, a warm water type lithium bromide water chilling unit 5, a cooling tower 6, an ash removal device 8, a water quality device 9 and a related pump set; the smelting furnace 1 is connected with a heat exchanger 2 through a pipeline, meanwhile, the heat exchanger 2 is provided with a pump set and a related water path, a flue gas pipeline and a valve, the flue gas pipeline is connected with a chimney 3, the other side of the heat exchanger 2 is connected with a water storage tank 4 through the related pipeline and the pump set valve, the water storage tank 4, a warm water type lithium bromide water chilling unit 5 and a cooling tower 6 are sequentially connected through the related pipeline and the pump set valve, a dust cleaning device 8 is connected with the heat exchanger 2, a water quality device 9 is respectively connected to the water storage tank 4 and the warm water type lithium bromide water chilling unit 5 through pipelines, and the warm water type lithium bromide water chilling unit 5 and the cooling tower 6 through pipelines, and a target object 7 is respectively connected with the water storage tank 4 and.
Quality of water device 9 passes through the pipeline and connects respectively before pump package valve between storage water tank 4 and warm water type lithium bromide cooling water set 5, warm water type lithium bromide cooling water set 5 and the cooling tower 6, the quality of water device includes that it provides the water softener of demineralized water to add the charge to storage water tank water quality treatment and the interior quality of water treatment of cooling tower and be used for supplying the storage water tank with the storage water tank through adding the medicine, and both mutual independence sets up.
The water quality device is connected in front of pump set valves between the water storage tank and the warm water type lithium bromide water chilling unit, the warm water type lithium bromide water chilling unit and the cooling tower through pipelines respectively, the water quality device comprises a dosing device for water quality treatment of the water storage tank and water quality treatment in the cooling tower through dosing and a water softening device for supplying softened water to the water storage tank, and the dosing device and the water softening device are arranged independently.
As shown in fig. 3, the ash removing device 8 includes an automatic detection module 81, an automatic ash removing module 82, an ash discharging module 83, and an alarm module 84, wherein:
the automatic detection module 81 is positioned at the inlet, the outlet and the interior of the heat exchanger 2 and is connected with the automatic ash cleaning module 82, the ash discharging module 83 and the alarm module 84 positioned in the system control cabinet, and the automatic ash cleaning module 82 and the ash discharging module 83 are communicated with the heat exchanger 2;
the automatic detection module 81 is used for monitoring the pressure difference value of the flue gas system in real time, judging the blocking state of the system and transmitting data to the system control cabinet;
the automatic ash removal module 82 is of a mechanical ash removal structure, comprises an ash storage mechanism and an ash removal interface, and is used for receiving a signal when the pressure value reached by the automatic detection module 81 is judged to be a slight ash deposition range value, and further starting the ash storage mechanism and the ash removal interface; the automatic ash removal module 82 periodically cleans the interior of the heat exchanger 2;
the ash discharging module 83 comprises an ash storage mechanism and an ash discharging interface, and is used for receiving a signal when the pressure value reached by the automatic detection module 81 is judged to be a serious ash deposition range value, further starting an alarm device of the alarm module 84, simultaneously opening the ash storage mechanism and the ash discharging interface, and after cleaning, the pressure difference value of the flue gas system is normal so as to recover the system operation;
the alarm module 84 is used for receiving a signal when the automatic detection module 81 detects that the pressure difference value of the flue gas system exceeds the set pressure difference of the system, and further starting the alarm device to output an alarm signal.
The alarm device is a buzzer alarm and can be released manually.
The refrigeration and heating system is connected with the remote control system, the remote control system is located inside the control cabinet and is remotely connected with the remote control monitoring center through the internet through a network interface, data acquisition and remote uploading of the system are achieved, the running state of the system is judged according to data conditions, and the functions of remote monitoring, fault early warning and fault diagnosis are achieved.
The specific principle of the utility model is that:
refrigeration is realized by a warm water type lithium bromide absorption unit. Specifically, the flue gas of a smelting furnace product is subjected to heat recovery through a heat exchange device, stored in intermediate medium water and circulated in a water storage tank system. The flue gas is communicated to a chimney for emission after heat exchange. The heat in the water storage tank is utilized by the warm water type lithium bromide absorption type unit, so that refrigeration is performed to do work. And the useless energy is transferred to the cooling tower through the pump set and is dissipated. The refrigeration purpose is achieved. The system is a flue gas waste heat utilization refrigerating system;
the smelting furnace is connected with a heat exchanger pipeline, and is provided with a pump set, a relevant water path and a flue valve, wherein a flue gas pipeline is connected with a chimney. The other side of the heat exchanger is connected with the water storage tank through a related pipeline and a pump set valve. The water storage tank is connected with a target object through a related pipeline and a pump set valve, and the heating function is realized through a flue gas heat exchange and hot water circulating water system. This is flue gas waste heat utilization system of heating. The water storage tank is suitable for winter or other working conditions requiring heat or hot water, and heat is output outwards through connection of the water storage tank. Thereby realizing the purpose of heat supply.
In addition, the system is also provided with a dust cleaning device, and different actions can be realized before, during and after starting. And realizing purging. The system monitors the pressure difference between the inlet and the outlet of the flue gas system in real time at ordinary times and judges the blocking state of the system. And if the blockage occurs, alarming. Meanwhile, a water quality management system is arranged on the water system and comprises water quality treatment equipment such as a dosing device and a water softener, so that the water quality of hot water after heat exchange of flue gas and cooling water of a bromine cooling unit is controlled, the problems of scaling, blockage and the like are prevented, heat exchange is prevented, and the efficiency of the system is reduced.
Claims (6)
1. A refrigerating and heating system for waste heat of an aluminum smelting process is characterized in that: the device comprises a smelting furnace (1), a heat exchanger (2), a chimney (3), a water storage tank (4), a warm water type lithium bromide water chilling unit (5), a cooling tower (6), an ash removal device (8), a water quality device (9) and a related pump set; the smelting furnace (1) is connected with a heat exchanger (2) through a pipeline, the heat exchanger (2) is provided with a pump set and a related water path, a flue gas pipeline and a valve, wherein the flue gas pipeline is connected with a chimney (3), the other side of the heat exchanger (2) is connected with a water storage tank (4) through a related pipeline and a pump set valve, the water storage tank (4), the warm water type lithium bromide water chilling unit (5) and the cooling tower (6) are sequentially connected through the related pipeline and the pump set valve, the ash removal device (8) is connected with the heat exchanger (2), the water quality device (9) is respectively connected with the water storage tank (4) and the warm water type lithium bromide water chilling unit (5) through pipelines, the warm water type lithium bromide water chilling unit (5) is connected with the pipeline between the cooling tower (6), and the target object (7) is respectively connected with the water storage tank (4) and the warm water type lithium bromide water chilling unit (5) through the related.
2. The system for refrigerating and heating the waste heat of the aluminum smelting process according to claim 1, which is characterized in that: quality of water device (9) are connected respectively before pump package valve between storage water tank (4) and warm water type lithium bromide cooling water set (5), warm water type lithium bromide cooling water set (5) and cooling tower (6) through the pipeline, quality of water device (9) include through adding the medicine to storage water tank water quality treatment and cooling tower in the charge device of water quality treatment and be used for supplying the water softening installation of demineralized water for the storage water tank, both mutual independence sets up.
3. The system for refrigerating and heating the waste heat of the aluminum smelting process according to claim 1, which is characterized in that: including automatic detection module (81), automatic deashing module (82), row's ash module (83) and alarm module (84) in ash removal device (8), wherein:
the automatic detection module (81) is positioned at the inlet, the outlet and the interior of the heat exchanger (2) and is connected with the automatic ash cleaning module (82), the ash discharging module (83) and the alarm module (84) positioned in the system control cabinet, and the automatic ash cleaning module (82) and the ash discharging module (83) are communicated with the heat exchanger (2);
the automatic detection module (81) is used for monitoring the pressure difference value of the flue gas system in real time, judging the blocking state of the system and transmitting data to the system control cabinet;
the automatic ash removal module (82) is of a mechanical ash removal structure and comprises an ash storage mechanism and an ash removal interface, and the automatic ash removal module is used for receiving a signal when the automatic detection module (81) reaches a pressure value and judges that the pressure value is a slight ash deposition range value, and further starting the ash storage mechanism and the ash removal interface; the automatic ash cleaning module (82) periodically cleans the interior of the heat exchanger (2);
the ash discharging module (83) comprises an ash storage mechanism and an ash discharging interface, and is used for receiving a signal when the automatic detection module (81) reaches a pressure value and judges that the pressure value is a serious ash deposition range value, further starting an alarm device of the alarm module (84), simultaneously opening the ash storage mechanism and the ash discharging interface, and after cleaning, the pressure difference value of the flue gas system is normal so as to recover the system operation;
and the alarm module (84) is used for receiving a signal when the automatic detection module (81) detects that the pressure difference value of the smoke system exceeds the set pressure difference of the system, and further starting the alarm device to output an alarm signal.
4. The system for refrigerating and heating the waste heat of the aluminum smelting process according to claim 3, which is characterized in that: the alarm device is a buzzer alarm and can be released manually.
5. The system for refrigerating and heating the waste heat of the aluminum smelting process according to claim 1, which is characterized in that: the refrigeration and heating system is connected with the remote control system, the remote control system is located inside the control cabinet and is remotely connected with the remote control monitoring center through the internet through a network interface, data acquisition and remote uploading of the system are achieved, the running state of the system is judged according to data conditions, and the functions of remote monitoring, fault early warning and fault diagnosis are achieved.
6. The system for refrigerating and heating the waste heat of the aluminum smelting process according to claim 1, which is characterized in that: the target object (7) comprises an aluminum smelting plant and an aluminum smelting processing technology.
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| CN201921014222.3U CN210321256U (en) | 2019-07-02 | 2019-07-02 | Refrigerating and heating system for aluminum smelting process waste heat |
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| CN201921014222.3U CN210321256U (en) | 2019-07-02 | 2019-07-02 | Refrigerating and heating system for aluminum smelting process waste heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629304A (en) * | 2020-12-17 | 2021-04-09 | 国网河北省电力有限公司电力科学研究院 | Coal-fired flue gas waste heat recovery device and method |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629304A (en) * | 2020-12-17 | 2021-04-09 | 国网河北省电力有限公司电力科学研究院 | Coal-fired flue gas waste heat recovery device and method |
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