CN111895375A - Metallurgical sediment waste heat recovery device - Google Patents
Metallurgical sediment waste heat recovery device Download PDFInfo
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- CN111895375A CN111895375A CN202010825755.0A CN202010825755A CN111895375A CN 111895375 A CN111895375 A CN 111895375A CN 202010825755 A CN202010825755 A CN 202010825755A CN 111895375 A CN111895375 A CN 111895375A
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- heat exchange
- steam generator
- metallurgical slag
- water
- exchange tube
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/04—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot slag, hot residues, or heated blocks, e.g. iron blocks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
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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
Abstract
The invention provides a metallurgical slag waste heat recovery device, which comprises: the heat exchange device is provided with a cylinder body for containing metallurgical slag and a plurality of heat exchange tubes which extend along the axial direction and are arranged inside the cylinder body; the steam generator is arranged above the heat exchange equipment; the steam generator is provided with a water inlet, a hot demineralized water inlet communicated with the outlet end of the heat exchange tube and a descending port communicated with the inlet end of the heat exchange tube; the desalted water from the descending port in the heat exchange tube exchanges heat with metallurgical slag and then returns to the steam generator through the hot desalted water inlet, so that the desalted water from the water inlet is circulated between the steam generator and the heat exchange tube; the steam generator is also provided with a steam outlet pipeline, and the steam outlet pipeline is used for discharging steam generated after heat exchange of the desalted water.
Description
Technical Field
The invention relates to the technical field of waste heat recovery, in particular to a metallurgical slag waste heat recovery device.
Background
The metallurgical waste residue refers to various solid wastes generated in the production process of the metallurgical industry. At present, the waste heat recovery device and the recovery method of metallurgical slag are few, and the device and the method comprise a hot stuffy waste heat recovery process, a grate cooling type waste heat recovery process, a vertical waste heat recovery process and the like.
The hot stuffy waste heat recovery process is to put high-temperature metallurgical slag into a pressure container and directly pump water into the container to generate steam, and the process has high water consumption and discharge capacity, and the steam contains a large amount of pollutants and cannot be directly utilized. The grate cooling type waste heat recovery process is characterized in that high-temperature metallurgical slag is placed into a special grate cooling vehicle, cold air is fed from the lower part of an air blower, hot air after heat exchange with the high-temperature metallurgical slag is discharged from the upper part of the air blower, and the hot air is fed into a waste heat boiler to produce steam. The process has the advantages of high air leakage rate, low heat exchange efficiency, high dust content of flue gas and low industrial feasibility. The vertical waste heat recovery process is characterized in that high-temperature metallurgical slag is placed in a vertical container, cold air is fed from the lower part of an air blower or a circulating fan, hot air after heat exchange with the high-temperature metallurgical slag is discharged from the upper part of the air blower or the circulating fan, and the hot air is fed into a waste heat boiler to produce steam.
Disclosure of Invention
In order to solve the technical problems of low energy recovery rate, high energy consumption and serious pollution during the recovery of the waste heat of the metallurgical slag, the invention provides a device for recovering the waste heat of the metallurgical slag, which comprises:
the heat exchange device is provided with a cylinder body for containing metallurgical slag and a plurality of heat exchange tubes which extend along the axial direction and are arranged inside the cylinder body;
the steam generator is arranged above the heat exchange equipment;
the steam generator is provided with a water inlet, a hot demineralized water inlet communicated with the outlet end of the heat exchange tube and a descending port communicated with the inlet end of the heat exchange tube;
the desalted water from the descending port in the heat exchange tube exchanges heat with metallurgical slag and then returns to the steam generator through the hot desalted water inlet, so that the desalted water from the water inlet is circulated between the steam generator and the heat exchange tube;
the steam generator is also provided with a steam outlet pipeline, and the steam outlet pipeline is used for discharging steam generated after heat exchange of the desalted water.
Alternatively, a plurality of the heat exchange tubes are arranged circumferentially uniformly at an inner wall surface in the cylinder.
Optionally, the outer wall surface of the heat exchange tube is provided with a guide vane, and the guide vane extends from the outer wall surface of the heat exchange tube to a direction which is at a preset angle with the radial direction of the cylinder.
Optionally, the descending port is connected with the inlet end of the heat exchange tube through a descending tube, the descending tube is provided with a circulating pump, and the circulating pump pumps the demineralized water in the steam generator into the heat exchange tube so as to realize forced circulation of the demineralized water between the steam generator and the heat exchange tube.
Optionally, a demineralized water device is further included, the demineralized water device being connected to the water inlet via a water supply line.
Optionally, further comprising a power plant;
the power equipment is in transmission connection with the cylinder of the heat exchange equipment so as to drive the cylinder to rotate along the axis of the cylinder.
Optionally, the output of power equipment is provided with the driving gear, the periphery of barrel is provided with driven gear, the driving gear passes through the chain and drives driven gear rotates.
Optionally, the device further comprises a support for supporting the barrel, and the barrel is rotatably mounted on the support.
Optionally, the steam generator is further provided with a water drainage pipeline and a liquid level transmitter, and the water supply pipeline and the water drainage pipeline are both provided with a water quantity regulating valve;
the liquid level transmitter interlockingly adjusts the regulating valve and a water supply pump installed on the water supply pipeline.
Optionally, a pressure transmitter is arranged on the top of the steam generator;
the pressure transmitter is arranged on the steam outlet pipeline in an interlocking and adjusting mode.
According to the technical scheme, the metallurgical slag waste heat recovery device comprises heat exchange equipment and a steam generator, metallurgical slag in a cylinder of the heat exchange equipment exchanges heat with demineralized water in a heat exchange pipe, the temperature of the metallurgical slag is reduced and the metallurgical slag is discharged to enter a next-stage process, the demineralized water in the heat exchange pipe enters the steam generator and is conveyed to a user through a steam outlet pipeline of the steam generator, energy consumption is not required to be added in the waste heat recovery process, only heat of the metallurgical slag is consumed, pollutants such as sewage or dust and the like cannot be generated, the energy recovery rate in the metallurgical slag is high, and energy recycling is realized.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.
Fig. 1 is a schematic view of the overall structure of a metallurgical slag waste heat recovery device according to an embodiment of the invention.
Fig. 2 is a schematic view of a steam generator according to an embodiment of the present invention.
FIG. 3 is a schematic view of a heat exchange apparatus according to an embodiment of the present invention.
Fig. 4 is a longitudinal sectional view of a heat exchange device according to an embodiment of the present invention.
FIG. 5 is a side view of a heat exchange apparatus according to an embodiment of the present invention.
Fig. 6 is a schematic view of a desalination apparatus according to an embodiment of the present invention.
Wherein:
1 Heat exchanger
101a cylinder body; 101a metallurgical slag inlet; 101b metallurgical slag outlet
102 heat exchange tubes; 103 a guide piece; 104, a support saddle; 105 roller
2 steam generator
201 hot demineralized water inlet; 202 a steam outlet pipeline; 203 water inlet; 204 a drop port; 205 a drain line; 206 a liquid level transmitter; 207 water quantity regulating valve; 208 a pressure transmitter; 209 steam volume regulating valve; 210 safety valve
3 down pipe
4 circulating pump
5 demineralized water equipment
501 a water supply line; 502 a water pump; 503 a water flow transmitter; 504 blowoff valve
6 power equipment
601. a driving gear; 602 a driven gear; 603 chain
A P pressure transmitter; a T thermometer; l level transmitters or gauges; an M pump; f flow meter
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals refer to like parts throughout.
"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.
For the sake of simplicity, the drawings are only schematic representations of the parts relevant to the invention, and do not represent the actual structure of the product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled.
In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used only to indicate relative positional relationships between relevant portions, and do not limit absolute positions of the relevant portions.
In this document, "first", "second", and the like are used only for distinguishing one from another, and do not indicate the degree and order of importance, the premise that each other exists, and the like.
In this context, "equal", "same", etc. are not strictly mathematical and/or geometric limitations, but also include tolerances as would be understood by a person skilled in the art and allowed for manufacturing or use, etc. Unless otherwise indicated, numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges subsumed therein.
In order to solve the technical problems of low energy recovery rate, high energy consumption and serious pollution in the prior art when the metallurgical slag waste heat is recovered, as shown in fig. 1, an embodiment of the invention provides a metallurgical slag waste heat recovery device, which comprises a heat exchange device 1 and a steam generator 2.
The heat exchange device 1 comprises a cylinder 101 for containing the metallurgical slag and a plurality of heat exchange tubes 102 which extend axially inside the cylinder 101 and are used for exchanging heat with the metallurgical slag, it can be understood that the heat exchange tubes 102 have desalted water inside and high-temperature metallurgical slag outside, the metallurgical slag and the desalted water are isolated from each other, the two exchange heat through the heat exchange tubes 102, and after the heat exchange is completed, the temperature of the metallurgical slag is reduced, and the desalted water in the heat exchange tubes 102 absorbs heat.
The steam generator 2 is arranged above the heat exchange device 1, specifically, the steam generator 2 may be directly above or laterally above, and in short, the position of the steam generator 2 is higher than that of the heat exchange device 1. As shown in fig. 2, the steam generator 2 is provided with a hot demineralized water inlet 201 communicated with the outlet end of the heat exchange tube 102 and a steam outlet pipe 202 arranged at the top, the demineralized water enters the steam generator 2 from the hot demineralized water inlet 201 to be vaporized to generate steam, and the steam is delivered to a user through the steam outlet pipe 202 at the top.
The steam generator 2 is provided with a water inlet 203, a hot demineralized water inlet 201 communicated with the outlet end of the heat exchange tube 102, and a descending port 204 communicated with the inlet end of the heat exchange tube 102;
the desalted water from the descending port 204 in the heat exchange tube 102 is returned to the steam generator 2 through the hot desalted water inlet 201 after exchanging heat with the metallurgical slag, so that the desalted water from the water inlet 203 is circulated between the steam generator 2 and the heat exchange tube 102;
the steam generator 2 is further provided with a steam outlet pipeline 202, and the steam outlet pipeline 202 is used for discharging steam generated after heat exchange of the desalted water.
The steam generator 2 is further provided with a water inlet 203 for introducing demineralized water and a descending port 204 communicated with the inlet end of the heat exchange tube 102, so that the demineralized water from the water inlet 203 can circulate between the steam generator 2 and the heat exchange tube 102, specifically, the circulation means that the demineralized water enters the steam generator 2 from the water inlet 203 and enters the heat exchange tube 102 through the descending port 204, the demineralized water exchanges heat with metallurgical slag in the heat exchange tube 102 to absorb heat, the demineralized water after absorbing heat enters the steam generator 2 through the hot demineralized water inlet 201 to be vaporized into steam, and the steam is conveyed to a user through the steam outlet pipeline 202 at the top.
As shown in fig. 3, the cylinder 101 is opened with a metallurgical slag inlet 101a and a metallurgical slag outlet 101b, and the high-temperature metallurgical slag enters the cylinder 101 from the metallurgical slag inlet 101a, exchanges heat with the desalted water in the heat exchange tube 102 in the cylinder 101, then is reduced in temperature, and is discharged through the metallurgical slag outlet 101 b.
The metallurgical slag of the invention is one or a mixture of more of blast furnace slag, converter slag and electric furnace slag, the metallurgical slag from the upper process is high-temperature granular solid, the shape of the solid particles is unchanged after heat exchange in heat exchange equipment, and the solid particles are discharged from a metallurgical slag outlet 101b to enter the lower process.
The metallurgical slag waste heat recovery device comprises heat exchange equipment and a steam generator, wherein metallurgical slag in a cylinder of the heat exchange equipment exchanges heat with demineralized water in a heat exchange pipe, the temperature of the metallurgical slag is reduced and the metallurgical slag is discharged to enter a next-stage process, the demineralized water in the heat exchange pipe enters the steam generator and is conveyed to a user through a steam outlet pipeline of the steam generator, the waste heat recovery process does not need additional energy consumption, only consumes the heat of the metallurgical slag, pollutants such as sewage, dust and the like can not be generated, the energy recovery utilization rate of the metallurgical slag is high, and the energy recycling is realized. The metallurgical slag waste heat recovery device has high heat recovery efficiency, short treatment time, no water resource consumption and no atmospheric pollution, and the produced power steam can provide heat energy for other procedures of industrial enterprises or can be directly used for power generation.
The plurality of heat exchange tubes 102 can be uniformly arranged on the inner wall surface of the cylinder 101 in the circumferential direction, in the drawing, the heat exchange tubes 102 are only arranged in one circle, certainly, the heat exchange tubes 102 can be not only arranged in one circle, but also arranged in multiple circles in different layers, the outer wall surface of the heat exchange tube 102 is not in contact with the inner wall surface of the cylinder 101, and how to fix the heat exchange tube 102 is concrete, a person skilled in the art can select tube plate installation, and the tube plate can separate demineralized water from metallurgical slag in the heat exchange tube 102. The metallurgical slag inlet 101a of the cylinder 101 is made of heat-resistant steel, and the metallurgical slag outlet 101b is in sealed butt joint with the next process, so that the metallurgical slag after heat exchange can be discharged in a sealed state.
Further, the outer wall surface of the heat exchange tube 102 is provided with a guide fin 103, as shown in fig. 4, the guide fin 103 is fixed to the outer wall surface of the heat exchange tube 102, specifically, the guide fin 103 may be vertical to the outer wall surface of the heat exchange tube, and the guide fin 103 extends from the outer wall surface of the heat exchange tube 102 in a direction inclined at a predetermined angle with the radial direction of the cylinder 101, that is, the guide fin 103 does not extend from the outer wall surface of the heat exchange tube 102 to the axis of the cylinder 101 in the radial direction of the cylinder 101, and the extending direction of the guide fin 103 forms an angle with the radial direction of the cylinder 101. The guide fins 103 can increase the axial flow of the metallurgical slag in the cylinder 101, increase the heat exchange contact time of the heat exchange tube 102 and the metallurgical slag, improve the heat exchange coefficient, and further improve the energy recovery utilization rate of the metallurgical slag.
In addition, the guide fins 103 may also be disposed on the outer wall surface of the heat exchange tube 102 in a form of extending in a regular zigzag manner, and specifically, the guide fins 103 may be fixed on the outer surface of the heat exchange tube 102 by welding.
Specifically, the descending port 204 of the steam generator 2 is connected with the inlet end of the heat exchange tube 102 through the descending tube 3, the circulating pump 4 is installed on the descending tube 3, the circulating pump 4 pumps the demineralized water in the steam generator 2 into the heat exchange tube 102, the pressure in the heat exchange tube 102 is increased, the pressure of the demineralized water is increased, the demineralized water can smoothly enter the steam generator, and forced circulation of the demineralized water between the steam generator 2 and the heat exchange tube 102 is realized.
In an alternative example, as shown in fig. 5, the metallurgical slag waste heat recovery device may further include a power plant 6. The power device 6 is in transmission connection with the cylinder 101 of the heat exchange device 1 to drive the cylinder 101 to rotate along the axis of the cylinder. The power equipment 6 can be a plurality of sets arranged in parallel and is in transmission connection with the cylinder 101, so that the cylinder 101 rotates, the flow of the metallurgical slag inside can be increased when the cylinder 101 rotates, the heat exchange coefficient between the metallurgical slag and the heat exchange tube 102 is increased, and the heat exchange effect of the metallurgical slag and demineralized water is improved.
The power device 6 and the cylinder 101 can be in transmission connection through a gear chain. Specifically, the output end of the power device 6 is provided with a driving gear 601, the periphery of the cylinder 101 is provided with a driven gear 602, and the driving gear 601 drives the driven gear 602 to rotate through a chain 603. When the device is used, the power device 6 drives the driving gear 601 to rotate, the driving gear 601 drives the chain 603 to move, the chain 603 drives the driven gear 602 to rotate, and the barrel 101 synchronously rotates along with the driven gear 602. Of course, the barrel 101 may be rotated through a small angle. The power device 6 may be an electric motor.
The heat exchange device 1 further comprises a support 104 for supporting the cylinder 101, the cylinder 101 is rotatably mounted on the support 104, specifically, the cylinder 101 is mounted on the support 104 through a bearing, and the cylinder 101 can rotate relative to the support 104. The support 104 may be provided with a roller 105, and the cylinder 101 may be supported by the roller 105 and may roll with respect to the roller 105.
As shown in fig. 6, the metallurgical slag waste heat recovery device may further include a demineralized water apparatus 5, and the demineralized water apparatus 5 is connected to the water inlet 203 through a water supply line 501, and the demineralized water apparatus 5 supplies demineralized water to the steam generator 2 through the water supply line 501.
Further, the water supply line 501 is provided with a water amount adjusting valve 207 for adjusting the supply flow rate of the demineralized water. In addition, the steam generator 2 is further provided with a water discharge line 205 and a liquid level transmitter 206, the water discharge line 205 is disposed at the bottom of the steam generator 2 for adjusting the total amount of water in the steam generator 2 in a matching manner, when the amount of water in the steam generator 2 exceeds a preset water level, the water can be discharged through the water supply line 205, the preset water level can be sixty percent of the total volume of the steam generator 2, and of course, the water discharge line 205 is also provided with a water amount adjusting valve 207 for adjusting the water supply amount of the steam generator 2.
The water supply pipeline 501 of the demineralized water equipment 5 is also provided with a water supply flow transmitter 503, the water supply flow transmitter 503 monitors the water flow in the water supply pipeline 501 in real time, and the water production amount of the demineralized water equipment is controlled in an interlocking manner, so that the stable supply of the demineralized water is ensured. Of course, the demineralized water device 5 can also be equipped with a level gauge.
The demineralized water device 5 may also be provided with a blowdown valve 504 for discharging residual sewage inside thereof.
The level transmitter 206 is used to monitor and measure the water level in the steam generator 2 in real time, and the parallel lock adjustment regulating valve 207 and the water feed pump 502 installed in the water feed line 501. When the liquid level transmitter 206 monitors that the water level in the steam generator 2 exceeds the preset threshold range, the water inlet and outlet amount in the steam generator 2 is adjusted through the interlocking adjusting valve 207 and the water feeding pump 502, and the water level in the steam generator 2 is ensured to be in the preset threshold range.
A pressure transmitter 208 is arranged on the top of the steam generator 2 for monitoring pressure fluctuations inside the steam generator 2 in real time; the steam outlet line 202 of the steam generator 2 is provided with a steam quantity regulating valve 209 for regulating the steam output quantity in the steam generator 2. The pressure transmitter 208 interlockingly adjusts the steam amount adjusting valve 209, that is, when the pressure transmitter 208 monitors that the pressure change in the steam generator 2 exceeds the preset threshold range, the pressure transmitter 208 adjusts the steam output rate by adjusting the opening degree of the steam amount adjusting valve 209, thereby adjusting the pressure in the steam generator 2.
The top of the steam generator 2 is further provided with a safety valve 210, and when the pressure inside the steam generator 2 is higher than a preset pressure, the safety valve 210 can open to release the pressure by itself.
In addition, the steam generator 2 may be further provided with a temperature measuring port and a chemical feeding port, which are realized by those skilled in the art according to conventional selection and will not be described herein.
When the heat exchange tube 102 works, high-temperature metallurgical slag enters the barrel 101 through the metallurgical slag inlet, the axial rotation of the barrel 101 can enable the guide vanes arranged inside to slowly convey the metallurgical slag from one end of the barrel 101 to the other end, and in the process, the metallurgical slag is fully contacted with the heat exchange tube 102 and exchanges heat with desalted water flowing in the reverse direction in the heat exchange tube 102; the circulating pump 4 of the downcomer 3 feeds the heat-exchanged demineralized water into the steam generator 2 to realize the generation of steam in the steam generator 2, and the demineralized water after the steam release is fed into the heat exchange tube 102 again to realize the next circulation of heat exchange; saturated steam generated in the steam generator 2 is sent to relevant users to realize the reutilization of waste heat.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein can be combined as a whole to form other embodiments as would be understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention and is not intended to limit the scope of the present invention, and equivalent embodiments or modifications such as combinations, divisions or repetitions of the features without departing from the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A metallurgical sediment waste heat recovery device, its characterized in that includes:
a heat exchange device (1), wherein the heat exchange device (1) is provided with a cylinder body (101) for containing metallurgical slag and a plurality of heat exchange tubes (102) which extend along the axial direction and are arranged inside the cylinder body (101);
the steam generator (2), the steam generator (2) is arranged above the heat exchange device (1);
wherein the steam generator (2) is provided with a water inlet (203), a hot demineralized water inlet (201) communicated with the outlet end of the heat exchange tube (102), and a descending port (204) communicated with the inlet end of the heat exchange tube (102);
the desalted water from the descending opening (204) in the heat exchange tube (102) is returned to the steam generator (2) through the hot desalted water inlet (201) after exchanging heat with metallurgical slag, so that the desalted water from the water inlet (203) is circulated between the steam generator (2) and the heat exchange tube (102);
the steam generator (2) is further provided with a steam outlet pipeline (202), and the steam outlet pipeline (202) is used for discharging steam generated after heat exchange of desalted water.
2. The metallurgical slag waste heat recovery device according to claim 1, wherein the plurality of heat exchange tubes (102) are uniformly arranged in the circumferential direction at the inner wall surface inside the cylinder (101).
3. The metallurgical slag waste heat recovery device according to claim 2, wherein the outer wall surface of the heat exchange tube (102) is provided with guide fins (103), and the guide fins (103) extend from the outer wall surface of the heat exchange tube (102) to the direction at a preset angle with the radial direction of the cylinder (101).
4. The metallurgical slag waste heat recovery device according to claim 1, characterized in that the downcomer (204) is connected with the inlet end of the heat exchange tube (102) through a downcomer (3), the downcomer (3) is provided with a circulation pump (4), and the circulation pump (4) pumps the demineralized water in the steam generator (2) into the heat exchange tube (102) to realize forced circulation of the demineralized water between the steam generator (2) and the heat exchange tube (102).
5. The metallurgical slag waste heat recovery device according to claim 1, further comprising a demineralized water device (5), wherein the demineralized water device (5) is connected to the water inlet (203) through a water supply line (501).
6. The metallurgical slag waste heat recovery device according to claim 1, further comprising a power plant (6);
the power equipment (6) is in transmission connection with the cylinder (101) of the heat exchange equipment (1) so as to drive the cylinder (101) to rotate along the axis of the cylinder.
7. The metallurgical slag waste heat recovery device according to claim 6, characterized in that the output end of the power equipment (6) is provided with a driving gear (601), the periphery of the barrel (101) is provided with a driven gear (602), and the driving gear (601) drives the driven gear (602) to rotate through a chain (603).
8. The metallurgical slag waste heat recovery device according to claim 7, further comprising a support (104) for supporting the barrel (101), wherein the barrel (101) is rotatably mounted to the support (104).
9. The metallurgical slag waste heat recovery device according to any one of claims 1 to 8, characterized in that the steam generator (2) is further provided with a water drain line (205) and a liquid level transmitter (206), and the water supply line (501) and the water drain line (205) are both provided with a water quantity regulating valve (207);
the level transmitter (206) interlockingly adjusts the regulator valve (207) and a feedwater pump (502) mounted to the feedwater line (501).
10. The metallurgical slag waste heat recovery device according to any one of claims 1 to 8, characterized in that a pressure transmitter (208) is arranged on top of the steam generator (2);
the pressure transmitter (208) interlockingly adjusts a steam quantity adjusting valve (209) arranged on the steam outlet pipeline (202).
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| CN202010825755.0A CN111895375B (en) | 2020-08-17 | 2020-08-17 | Metallurgical sediment waste heat recovery device |
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| CN202010825755.0A CN111895375B (en) | 2020-08-17 | 2020-08-17 | Metallurgical sediment waste heat recovery device |
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| CN104154515A (en) * | 2014-08-14 | 2014-11-19 | 张家港市艾克沃环境能源技术有限公司 | Waste heat boiler with heat absorption capacity adjustable and control method of boiler |
| CN109539821A (en) * | 2018-10-19 | 2019-03-29 | 天津大学 | A kind of heat energy recycle method and device of high-temperature metallurgical slag |
| CN212645391U (en) * | 2019-12-11 | 2021-03-02 | 陈力群 | Device for recycling waste heat of metallurgical slag |
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