CN213363413U - Slag ladle micro-positive pressure chilling waste heat utilization system - Google Patents
Slag ladle micro-positive pressure chilling waste heat utilization system Download PDFInfo
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- CN213363413U CN213363413U CN202022496022.5U CN202022496022U CN213363413U CN 213363413 U CN213363413 U CN 213363413U CN 202022496022 U CN202022496022 U CN 202022496022U CN 213363413 U CN213363413 U CN 213363413U
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Abstract
The utility model relates to a sediment package pressure-fired chilling waste heat utilization system, each sediment package is arranged in the confined chilling chamber, the left and right sides wall of chilling chamber is connected with the cooling tuber pipe respectively, the export of air-blower links to each other with the entry of one of them cooling tuber pipe, the export of another cooling tuber pipe links to each other with fin heat exchanger's hot side air intake, the evacuation of hot side air exit, the cold side water inlet links to each other with oxygen-eliminating device moisturizing pipe, the cold side delivery port links to each other with the cold side water inlet of tubulation heat exchanger, the cold side delivery port of tubulation heat exchanger links to each other with the oxygen-eliminating device, the top of chilling chamber is connected with the steam pipe, the export of steam pipe links to each other with the entry on the hot side of tubulation heat exchanger, the export is; the top of each slag ladle is also provided with a low-temperature water spraying port connected with a low-temperature water spraying water supplementing pipe. The system can fully recover the waste heat of the slag ladle, reduce water consumption and improve the environment of a cooling area.
Description
Technical Field
The utility model relates to a sediment package pressure-fired chilling waste heat utilization system belongs to waste heat utilization technical field.
Background
In the copper smelting process, molten slag at about 850 ℃ is generated, the slag is discharged into a slag ladle and then transported to a slag ladle slow cooling field, the slag ladle slow cooling field is naturally and slowly cooled for a certain time after being placed in the air, and after the slag ladle slow cooling field is cooled to below 500 ℃, the surface of the slag is condensed into solid so as to be cooled by water spraying. If the natural slow cooling time is not enough, and a condensation layer with enough thickness is not formed on the surface of the slag, water easily enters the slag ladle along the crack of the slag and contacts with the uncondensed slag copper melt, so that the slag ladle is blasted. After natural slow cooling is sufficient, the condensed solid slag avoids direct and large-scale contact of cooling water and liquid slag, and slag ladle blasting or slag ladle cracking is avoided. The sum of the natural slow cooling time and the water spraying cooling time is called as the total cooling time, and a slag ladle cooling system is established in a copper smelting plant to make specific requirements on each time.
The waste heat of the copper slag at the high temperature level is converted into natural convection air, water vapor and hot water at the low temperature level, and waste heat resources are wasted because no waste heat utilization measures are taken due to too low grade; when the water is cooled, a large amount of water vapor is emitted, the environment is polluted, and a large amount of water resources are wasted.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a sediment package pressure-fired chilling waste heat utilization system has solved the problem that proposes in the above-mentioned background art, can fully retrieve the waste heat of sediment package, and the reconstruction energy flows, reduces water consumption, improves the cooling zone environment.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a slag ladle micro-positive pressure chilling waste heat utilization system comprises a plurality of slag ladles, wherein each slag ladle is arranged in a closed chilling chamber, the left side wall and the right side wall of the chilling chamber are respectively connected with a cooling air pipe, an outlet of an air blower is connected with an inlet of one cooling air pipe, an outlet of the other cooling air pipe is connected with a hot side air inlet of a fin heat exchanger, and a hot side air outlet of the fin heat exchanger is communicated with the atmosphere; the cold side water inlet of the fin heat exchanger is connected with a deaerator water replenishing pipe, the cold side water outlet of the fin heat exchanger is connected with the cold side water inlet of the tubular heat exchanger through a deaerator water replenishing connecting pipe, the cold side water outlet of the tubular heat exchanger is connected with the deaerator, the top of the chilling chamber is connected with a steam pipe, the outlet of the steam pipe is connected with the upper inlet of the hot side of the tubular heat exchanger, the lower outlet of the hot side of the tubular heat exchanger is connected with a condensate pipe, and the condensate pipe is respectively connected with the high-temperature water spraying ports at the tops of the slag ladles; the top of each slag ladle is also provided with a low-temperature water sprinkling port, and each low-temperature water sprinkling port is connected with a low-temperature water sprinkling water replenishing pipe.
Furthermore, the two cooling air pipes are respectively connected with switching air ports on two sides of the reversing valve, when the reversing valve is positioned at a first station, the switching air port I is connected with an outlet of the air blower, and the switching air port II is connected with an air inlet at the hot side of the fin heat exchanger; when the reversing valve is located at the second station, the switching air port II is connected with the outlet of the air blower, and the switching air port I is connected with the hot side air inlet of the fin heat exchanger.
Furthermore, the motor of air-blower is driven by the blast frequency converter, install hot-blast temperature sensor on the hot side air-supply line of fin heat exchanger, hot-blast temperature sensor's temperature signal inserts hot-blast temperature transmitter, the temperature signal of hot-blast temperature transmitter output inserts the temperature signal input of blast frequency converter.
Further, the switching of the reversing valve is controlled by a temperature signal output by the hot air temperature transmitter.
Furthermore, a water spraying regulating valve is installed at the inlet of the low-temperature water spraying water supplementing pipe, a first pressure sensor is installed in the inner cavity of the chilling chamber, a first pressure signal of the first pressure sensor is connected into a first pressure transmitter, and the opening degree of the water spraying regulating valve is controlled by a first pressure signal of the first pressure transmitter.
Furthermore, a steam flow regulating valve is installed at the inlet section of the steam pipe, a second pressure sensor is installed on an outlet pipeline of the steam flow regulating valve, a pressure signal of the second pressure sensor is connected into a second pressure transmitter, and the opening degree of the steam flow regulating valve is controlled by the pressure signal of the second pressure transmitter.
Furthermore, a drain stop valve and a check valve are arranged at the inlet section of the condensate pipe, a water seal elbow bent downwards is arranged at the inlet of the drain stop valve, a blow-down valve is installed at the bottom of the water seal elbow, and the outlet of the blow-down valve is connected with the condensate pipe.
Furthermore, the bottom of the side wall of the chilling chamber is connected with at least one effusion discharge port, and each effusion discharge port is respectively provided with a trap.
The beneficial effects of the utility model reside in that: 1. after the slag ladle is placed into the chilling chamber, the air blower blows cooling air into the chilling chamber through one of the cooling air pipes, each slag ladle is air-cooled, the cooling air is heated to 200 ℃ to become hot air, the hot air is discharged from the other cooling air pipe, the hot side entering the fin heat exchanger preheats boiler water supplement from the deaerator water supplement pipe, and the preheated boiler water supplement enters the tubular heat exchanger through the deaerator water supplement connecting pipe to be further heated and then enters the deaerator. After the air cooling is carried out for a period of time, the surface of the slag in the slag ladle is condensed into solid, and then the water spraying cooling is carried out, so that the energy flow reconstruction is realized, and the safety is improved.
2. The reversing valve is arranged, the flow direction of cooling air can be changed, for example, in an initial state, when the reversing valve is located at a first station, a first switching air port of the reversing valve is communicated with an air inlet, a second switching air port is communicated with an air outlet, the cooling air sent out by the air blower flows out from the first switching air port, enters the chilling chamber from the left side through the first cooling air pipe, blows each slag ladle from left to right, flows out from the right side through the second cooling air pipe, and enters the hot side of the fin heat exchanger. The slag ladle on the left side exchanges heat with fresh cooling air, so that the cooling speed is high; and the slag ladle on the right side exchanges heat with the cooling air after temperature rise, the cooling speed is low, the cooling unbalance of the slag ladle is caused, the cooling effect is also influenced, and the air cooling efficiency is reduced. After the operation is carried out for a period of time, when the temperature output by the hot air temperature transmitter is lower than a set value, for example, 200 ℃, the reversing valve is switched to a second station, a first switching air port of the reversing valve is communicated with the air outlet, a second switching air port is communicated with the air inlet, cooling air sent by the air blower flows out from the second switching air port, enters the chilling chamber from the right side through a second cooling air pipe, blows each slag ladle from the right side to the left side, flows out from the left side through the first cooling air pipe, and enters the hot side of the fin heat exchanger. Through the switching of wind direction, can make each cinder ladle even cooling, improve heat exchange efficiency.
3. And at the end of air cooling, the outlet air temperature is reduced, and the air blowing frequency converter reduces the rotating speed of the air blower and the circulating air volume according to the hot air temperature detected by the hot air temperature transmitter, so that the power consumption is further saved.
4. The water spraying cooling comprises high-temperature water spraying from a condensate pipe and low-temperature water spraying from a low-temperature water spraying water supplementing pipe, and byproduct steam generated by water spraying flows out through a steam pipe at the top of the chilling chamber and is used as a heat source of the tubular heat exchanger; the condensed water is completely recovered through the condensed water pipe, and the condensed water is recycled while the waste heat of the slag ladle and the waste heat of the byproduct steam are recovered, so that the water consumption is reduced. Meanwhile, the environment of a slag ladle cooling area is improved, and water vapor pollution is avoided.
5. And adjusting the opening of the steam flow regulating valve according to the byproduct steam pressure measured by the pressure sensor II, and controlling the working pressure of the chilling chamber by controlling the byproduct steam pressure. And the condensate water is used as much as possible, and the opening degree of the water spraying adjusting valve is adjusted through the pressure of the chilling chamber measured by the pressure transmitter I, so that the supplementary water amount is reduced to the minimum.
6. The by-product steam becomes condensed water after releasing latent heat through the tube still heat exchanger, and is discharged through the water seal elbow, the drainage stop valve and the check valve, and the stored water of the water seal elbow can be discharged through the drain valve. The accumulated liquid at the bottom of the chilling chamber is discharged and collected through the accumulated liquid discharge port, and can be used by other water using points in a plant area or returned to a low-temperature water spraying and supplementing pipe for recycling after being cooled.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of the first working state of the slag ladle micro-positive pressure chilling waste heat utilization system of the present invention.
FIG. 2 is a flow chart of the second working state of the slag ladle micro-positive pressure chilling waste heat utilization system of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below: 1. the system comprises a slag ladle, 2, a chilling chamber, 3-1, a first cooling air pipe, 3-2, a second cooling air pipe, 4, a blower, 5, a reversing valve, 5-1, a first switching air opening, 5-2, a second switching air opening, 6, a fin heat exchanger, 7, a deaerator water replenishing pipe, 8, a deaerator water replenishing connecting pipe, 9, a tube array heat exchanger, 10, a deaerator, 11, a steam pipe, 12, a condensate pipe, 13, a low-temperature water spraying water replenishing pipe, 14, a drainage stop valve, 15, a check valve, 16, a blow-off valve, 17, a water spraying adjusting valve, 18, a steam flow adjusting valve, 19, a liquid accumulation discharge port, P1, a first pressure sensor, PT1, a first pressure transmitter, P2, a second pressure sensor, PT2, a second pressure transmitter, T1 and a hot air temperature sensor; TT, hot air temperature transmitter.
Detailed Description
As shown in fig. 1, the slag ladle micro-positive pressure chilling waste heat utilization system of the utility model comprises a plurality of slag ladles 1, each slag ladle 1 is arranged in a closed chilling chamber 2, the left and right side walls of the chilling chamber 2 are respectively connected with a cooling air pipe, the outlet of an air blower 4 is connected with the inlet of one of the cooling air pipes, the outlet of the other cooling air pipe is connected with the hot side air inlet of a fin heat exchanger 6, and the hot side air outlet of the fin heat exchanger 6 is communicated with the atmosphere; a cold side water inlet of the fin heat exchanger 6 is connected with a deaerator water replenishing pipe 7, a cold side water outlet of the fin heat exchanger 6 is connected with a cold side water inlet of a tubular heat exchanger 9 through a deaerator water replenishing connecting pipe 8, a cold side water outlet of the tubular heat exchanger 9 is connected with a deaerator 10, the top of the chilling chamber 2 is connected with a steam pipe 11, an outlet of the steam pipe 11 is connected with an upper inlet of a hot side of the tubular heat exchanger 9, a lower outlet of the hot side of the tubular heat exchanger 9 is connected with a condensate pipe 12, and the condensate pipe 12 is respectively connected with a high-temperature water spraying port at; the top of each slag ladle 1 is also provided with a low-temperature water sprinkling port respectively, and each low-temperature water sprinkling port is connected with a low-temperature water sprinkling water replenishing pipe 13.
The two cooling air pipes are respectively connected with the switching air ports on the two sides of the reversing valve 5, when the reversing valve 5 is positioned at the first station, the switching air port I5-1 is connected with an outlet of the air blower 4, and the switching air port II 5-2 is connected with a hot-side air inlet of the fin heat exchanger 6; when the reversing valve 5 is positioned at the second station, the switching air port II 5-2 is connected with the outlet of the air blower 4, and the switching air port I5-1 is connected with the hot-side air inlet of the fin heat exchanger 6.
The reversing valve 5 is arranged to change the flow direction of cooling air, and the switching of the reversing valve 5 is controlled by a temperature signal output by the hot air temperature transmitter TT. For example, in an initial state, when the reversing valve 5 is in a first station, the first switching air port 5-1 of the reversing valve 5 is communicated with the air inlet, the second switching air port 5-2 is communicated with the air outlet, cooling air sent by the blower 4 flows out from the first switching air port 5-1, enters the chilling chamber 2 from the left side through the first cooling air pipe 3-1, blows each slag ladle 1 from the left to the right, flows out from the right side through the second cooling air pipe 3-2, and enters the hot side of the fin heat exchanger 6. The slag ladle on the left side exchanges heat with fresh cooling air, so that the cooling speed is high; and the slag ladle on the right side exchanges heat with the cooling air after temperature rise, the cooling speed is low, the cooling unbalance of the slag ladle is caused, the cooling effect is also influenced, and the air cooling efficiency is reduced.
After the operation is carried out for a period of time, when the temperature output by the hot air temperature transmitter TT is lower than a set value, for example, 200 ℃, the reversing valve 5 is switched to a second station, as shown in figure 2, a first switching air port 5-1 of the reversing valve 5 is communicated with an air outlet, a second switching air port 5-2 is communicated with an air inlet, cooling air sent by the air blower 4 flows out from the second switching air port 5-2, enters the chilling chamber 2 from the right side through a second cooling air pipe 3-2, blows each slag ladle from the right side to the left side, flows out from the left side through the first cooling air pipe 3-1, and enters the hot side of the fin heat exchanger 6. Through the switching of wind direction, can make each cinder ladle even cooling, improve heat exchange efficiency.
After the slag ladle is placed into the chilling chamber 2, the air blower 4 blows cooling air into the chilling chamber 2 through one of the cooling air pipes, each slag ladle is air-cooled, the cooling air is heated to 200 ℃ to become hot air, the hot air is discharged from the other cooling air pipe, the hot side entering the fin heat exchanger 6 preheats the boiler water supplement from the deaerator water supplementing pipe 7, and the preheated boiler water supplement enters the tubular heat exchanger 9 through the deaerator water supplement connecting pipe 8 to be further heated and heated, and then enters the deaerator 10. After the air cooling is carried out for a period of time, the surface of the slag in the slag ladle is condensed into solid, and then the water spraying cooling is carried out, so that the energy flow reconstruction is realized, and the safety is improved.
The inlet section of the condensate pipe 12 is provided with a drainage stop valve 14 and a check valve 15, the inlet of the drainage stop valve 14 is provided with a water seal elbow bent downwards, the bottom of the water seal elbow is provided with a blow-down valve 16, and the outlet of the blow-down valve 16 is connected with the condensate pipe 12. The by-product steam becomes condensed water after latent heat is released by the tube still heat exchanger 9, the condensed water is discharged through the water seal elbow, the drainage stop valve 14 and the check valve 15, and the water stored in the water seal elbow can be discharged through the drain valve 16.
The water spraying cooling comprises high-temperature water spraying from a condensate pipe 12 and low-temperature water spraying from a low-temperature water spraying water supplementing pipe 13, and byproduct steam generated by the water spraying flows out through a steam pipe 11 at the top of the chilling chamber 2 and is used as a heat source of the tubular heat exchanger 9; the condensed water is completely recovered through the condensed water pipe 12, and the condensed water is recycled while the waste heat of the slag ladle and the waste heat of the byproduct steam are recovered, so that the water consumption is reduced. Meanwhile, the environment of a slag ladle cooling area is improved, and water vapor pollution is avoided.
The motor of the blower 4 is driven by a blower frequency converter, a hot air temperature sensor T1 is installed on an air inlet pipe at the hot side of the finned heat exchanger 6, a temperature signal of the hot air temperature sensor T1 is connected to a hot air temperature transmitter TT, and a temperature signal output by the hot air temperature transmitter TT is connected to a temperature signal input end of the blower frequency converter. And in the tail stage of air cooling, the outlet air temperature is reduced, and the air blowing frequency converter reduces the rotating speed of the air blower 4 according to the hot air temperature detected by the hot air temperature transmitter TT, reduces the circulating air quantity and further saves the power consumption.
The inlet of the low-temperature water spraying water supplementing pipe 13 is provided with a water spraying regulating valve 17, the inner cavity of the chilling chamber 2 is provided with a pressure sensor I P1, a pressure signal of the pressure sensor I P1 is connected to a pressure transmitter I PT1, and the opening degree of the water spraying regulating valve 17 is controlled by a pressure signal of the pressure transmitter I PT 1.
The steam flow control valve 18 is installed at the inlet section of the steam pipe 11, the second pressure sensor P2 is installed on the outlet pipeline of the steam flow control valve 18, the pressure signal of the second pressure sensor P2 is connected to the second pressure transmitter PT2, and the opening degree of the steam flow control valve 18 is controlled by the pressure signal of the second pressure transmitter PT 2.
And adjusting the opening of the steam flow regulating valve 18 according to the byproduct steam pressure measured by the pressure sensor II P2, and controlling the working pressure of the chilling chamber 2 by controlling the byproduct steam pressure. The condensate water is used as soon as possible, and the opening degree of the water spraying adjusting valve 17 is adjusted through the pressure of the chilling chamber measured by the pressure transmitter I, so that the supplementary water amount is reduced to the minimum.
The bottom of the side wall of the chilling chamber 2 is connected with at least one effusion discharge port 19, and each effusion discharge port 19 is respectively provided with a trap. The accumulated liquid at the bottom of the chilling chamber 2 is discharged and collected through the accumulated liquid discharge port 19, and can be used by other water using points in a plant area or returned to the low-temperature water spraying and supplementing pipe 13 for recycling after being cooled.
In the description herein, references to the description of a term "embodiment," "for example," etc., mean that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a sediment package pressure-fired chilling waste heat utilization system, includes a plurality of sediment packages, its characterized in that: each slag ladle is arranged in a closed chilling chamber, the left side wall and the right side wall of the chilling chamber are respectively connected with a cooling air pipe, the outlet of a blower is connected with the inlet of one cooling air pipe, the outlet of the other cooling air pipe is connected with the hot side air inlet of the fin heat exchanger, and the hot side air outlet of the fin heat exchanger is communicated with the atmosphere; the cold side water inlet of the fin heat exchanger is connected with a deaerator water replenishing pipe, the cold side water outlet of the fin heat exchanger is connected with the cold side water inlet of the tubular heat exchanger through a deaerator water replenishing connecting pipe, the cold side water outlet of the tubular heat exchanger is connected with the deaerator, the top of the chilling chamber is connected with a steam pipe, the outlet of the steam pipe is connected with the upper inlet of the hot side of the tubular heat exchanger, the lower outlet of the hot side of the tubular heat exchanger is connected with a condensate pipe, and the condensate pipe is respectively connected with the high-temperature water spraying ports at the tops of the slag ladles; the top of each slag ladle is also provided with a low-temperature water sprinkling port, and each low-temperature water sprinkling port is connected with a low-temperature water sprinkling water replenishing pipe.
2. The slag ladle micro-positive pressure chilling waste heat utilization system of claim 1, characterized in that: the two cooling air pipes are respectively connected with switching air ports on two sides of the reversing valve, when the reversing valve is positioned at a first station, the switching air port I is connected with an outlet of the air blower, and the switching air port II is connected with a hot-side air inlet of the fin heat exchanger; when the reversing valve is located at the second station, the switching air port II is connected with the outlet of the air blower, and the switching air port I is connected with the hot side air inlet of the fin heat exchanger.
3. The slag ladle micro-positive pressure chilling waste heat utilization system of claim 2, characterized in that: the motor of air-blower is driven by the air-blowing frequency converter, install hot-blast temperature sensor on the hot side air-supply line of fin heat exchanger, hot-blast temperature sensor's temperature signal inserts hot-blast temperature transmitter, the temperature signal of hot-blast temperature transmitter output inserts the temperature signal input of air-blowing frequency converter.
4. The slag ladle micro-positive pressure chilling waste heat utilization system of claim 3, characterized in that: the switching of the reversing valve is controlled by a temperature signal output by the hot air temperature transmitter.
5. The slag ladle micro-positive pressure chilling waste heat utilization system of claim 1, characterized in that: the entry of low temperature trickle moisturizing pipe is installed and is drenched the water governing valve, pressure sensor one is installed to the inner chamber of chilling chamber, pressure sensor one's pressure signal inserts pressure transmitter one, the aperture of drenching the water governing valve is controlled by the pressure signal of pressure transmitter one.
6. The slag ladle micro-positive pressure chilling waste heat utilization system of claim 1, characterized in that: and a steam flow regulating valve is installed at the inlet section of the steam pipe, a second pressure sensor is installed on an outlet pipeline of the steam flow regulating valve, a second pressure signal of the second pressure sensor is connected into a second pressure transmitter, and the opening degree of the steam flow regulating valve is controlled by the second pressure signal of the second pressure transmitter.
7. The slag ladle micro-positive pressure chilling waste heat utilization system according to any one of claims 1 to 6, characterized in that: the inlet section of condensate pipe is equipped with hydrophobic stop valve and check valve, the entry of hydrophobic stop valve is equipped with the water seal elbow of downwarping, the blowoff valve is installed to the bottom of water seal elbow, the export of blowoff valve with the condensate pipe links to each other.
8. The slag ladle micro-positive pressure chilling waste heat utilization system according to any one of claims 1 to 6, characterized in that: the bottom of the side wall of the chilling chamber is connected with at least one effusion discharge port, and each effusion discharge port is respectively provided with a trap.
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| CN202022496022.5U CN213363413U (en) | 2020-11-03 | 2020-11-03 | Slag ladle micro-positive pressure chilling waste heat utilization system |
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| CN202022496022.5U CN213363413U (en) | 2020-11-03 | 2020-11-03 | Slag ladle micro-positive pressure chilling waste heat utilization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350974A (en) * | 2021-12-17 | 2022-04-15 | 广西金川有色金属有限公司 | Smelting slag slow cooling process |
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2020
- 2020-11-03 CN CN202022496022.5U patent/CN213363413U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350974A (en) * | 2021-12-17 | 2022-04-15 | 广西金川有色金属有限公司 | Smelting slag slow cooling process |
| CN114350974B (en) * | 2021-12-17 | 2023-08-15 | 广西金川有色金属有限公司 | Smelting slag slow cooling process |
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