CN112251548A - Steel slag waste heat utilization device and operation mode thereof - Google Patents
Steel slag waste heat utilization device and operation mode thereof Download PDFInfo
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- CN112251548A CN112251548A CN202010890550.0A CN202010890550A CN112251548A CN 112251548 A CN112251548 A CN 112251548A CN 202010890550 A CN202010890550 A CN 202010890550A CN 112251548 A CN112251548 A CN 112251548A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/10—Slag pots; Slag cars
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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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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/02—Physical or chemical treatment of slags
- C21B2400/022—Methods of cooling or quenching molten slag
- C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/068—Receptacle features where the slag is treated with a sealed or controlled environment
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
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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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a steel slag waste heat utilization device and an operation mode thereof, and belongs to the field of recycling equipment. The technical scheme of the invention is as follows: firstly, discharging high-temperature massive steel slag which is rolled and crushed by a roller press onto a transportation tool; then conveying the high-temperature massive steel slag to a high place through a conveying tool, and loading the high-temperature massive steel slag into a high-temperature massive steel slag heat-taking device through a feeding port of the high-temperature massive steel slag heat-taking device; then, a fan is used for supplying air, and cold air is sent into the high-temperature massive steel slag heat-taking device through an air distribution device of the high-temperature massive steel slag heat-taking device and exchanges heat with the high-temperature steel slag in the high-temperature massive steel slag heat-taking device; then the high-temperature air after heat exchange and temperature rise is discharged from a hot air outlet at the top of the high-temperature massive steel slag heat taking device and then is led into a heat waste heat boiler for waste heat utilization; and then the fan stops supplying air, and the cooled steel slag is discharged from a discharge hole at the bottom of the high-temperature massive steel slag heat-taking device and is loaded into a steel slag tank car. Thereby realizing the effective utilization of the residual heat of the steel slag.
Description
Technical Field
The invention belongs to the field of recycling equipment, and particularly relates to a steel slag waste heat utilization device and an operation mode thereof.
Background
The steel slag rolling crushing-waste heat self-decomposing and pressing hot disintegrating process technology realizes the continuity, the equipment and the automation of steel slag treatment for the first time in China, and the treatment process mainly comprises two steps: the high-temperature molten steel slag with the temperature of about 1400 ℃ enters a rolling crushing area, and water is pumped for cooling while the steel slag is rolled and crushed. The steel slag after being rolled, crushed and cooled is about 800 ℃; the steel slag with the temperature of about 800 ℃ enters a pressure heating stuffy tank (7), and is intermittently pumped with water and cooled in a closed environment, so that the processes of steel slag pulverization, slag and steel separation and the like are completed. In the step of pressure hot stuffiness, the steel slag can be put into a tank at a temperature of more than 300 ℃ to meet the process requirements, and the overhigh temperature not only prolongs the pressure hot stuffiness time, but also easily causes safety problems.
The temperature difference of 500 ℃ is between the technological requirements of rolling, crushing and cooling the 800 ℃ steel slag and the temperature of pressing, heating and stewing the steel slag at 300 ℃ in the tank, and the waste heat utilization potential is very high.
Therefore, on the basis of the steel slag rolling crushing-waste heat self-decomposition and pressing hot-disintegration process technology, a steel slag waste heat utilization device is needed to realize waste heat utilization of high-temperature massive steel slag, energy is saved, and meanwhile, the potential safety hazard of a pressing hot-disintegration link is reduced.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the invention aims to provide a steel slag waste heat utilization device and an operation mode thereof.A technical device for rolling, crushing and pressing and hot stewing steel slag has a temperature difference of 500 ℃ from the process requirement of rolling, crushing and cooling the 800 ℃ steel slag to the process requirement of pressing and hot stewing link steel slag to the temperature of 300 ℃ in a tank, thereby realizing the waste heat utilization of the high-temperature massive steel slag at the temperature section.
In order to solve the technical problems, the invention adopts the following technical scheme:
a steel slag waste heat utilization device; the steel slag waste heat utilization device comprises: the device comprises a roller press, a transport tool, a fan, a high-temperature massive steel slag heat-taking device, a steel slag tank car, a waste heat boiler and a pressure-heating stuffy tank; the roller press is arranged at the feeding end of the transport tool and used for discharging the high-temperature massive steel slag which is rolled and crushed by the roller press and conveying the high-temperature massive steel slag to the transport tool, and the discharging end of the transport tool is connected with the feeding port of the high-temperature massive steel slag heat-taking device and used for loading the high-temperature massive steel slag into the high-temperature massive steel slag heat-taking device; the fan is connected with the air distribution device of the high-temperature massive steel slag heat taking device and used for conveying cold air into the high-temperature massive steel slag heat taking device to exchange heat with the high-temperature massive steel slag, and a hot air outlet of the high-temperature massive steel slag heat taking device is connected with a waste heat boiler and used for guiding high-temperature gas after heat exchange into the waste heat boiler to utilize waste heat; the steel slag tank wagon is arranged at the bottom of the high-temperature massive steel slag heat-taking device, can move between the high-temperature massive steel slag heat-taking device and the pressure-heat stuffy tank, and is used for conveying the steel slag discharged from the bottom of the high-temperature massive steel slag heat-taking device to the pressure-heat stuffy tank.
The transportation tool is the high-temperature massive steel slag continuous feeding device, wherein the feeding end of the transportation tool is positioned at a low position, and the discharging end of the transportation tool is positioned at a high position.
Wherein the roller press has an outlet at the bottom of the roller press and above the feed end of the transport vehicle.
Wherein the transport means is a chain transport means.
The high-temperature massive steel slag heat-taking device is provided with a discharge port, and the discharge port is positioned at the bottom of the high-temperature massive steel slag heat-taking device and is positioned at the upper part of the steel slag tank car.
Wherein, the hot air outlet is positioned at the top of the high-temperature massive steel slag heat-taking device and is connected with a waste heat boiler through a high-temperature resistant pipeline.
The feeding port is arranged on one side of the upper part of the high-temperature massive steel slag heat taking device and faces the discharge end of the transport tool.
The operation mode of the steel slag waste heat utilization device comprises the following steps:
s1: discharging the high-temperature massive steel slag rolled and crushed by the roller press onto a transport tool, wherein the transport tool is preferably a high-temperature massive steel slag continuous feeding device;
s2: conveying the high-temperature massive steel slag to a high place through a conveying tool, and loading the high-temperature massive steel slag into a high-temperature massive steel slag heat-taking device through a feeding port of the high-temperature massive steel slag heat-taking device;
s3: the fan supplies air, cold air is sent into the high-temperature massive steel slag heat-taking device through the air distribution device of the high-temperature massive steel slag heat-taking device, and the cold air exchanges heat with the high-temperature massive steel slag in the high-temperature massive steel slag heat-taking device;
s4: the high-temperature air after heat exchange and temperature rise is discharged from a hot air outlet at the top of the high-temperature massive steel slag heat taking device and then is guided into a heat waste heat boiler for waste heat utilization;
s5: stopping air supply by the fan, discharging the cooled steel slag from a discharge hole at the bottom of the high-temperature massive steel slag heat-taking device, and loading the steel slag into a steel slag tank wagon;
s6: and the steel slag tank wagon sends the cooled steel slag to a pressure hot stuffy tank for hot stuffy treatment.
Compared with other methods, the method has the beneficial technical effects that:
in the device, firstly, the high-temperature massive steel slag after being rolled and crushed by the roller press is discharged onto a transport tool, and the transport tool is preferably a high-temperature massive steel slag continuous feeding device; then conveying the high-temperature massive steel slag to a high place through a conveying tool, and loading the high-temperature massive steel slag into a high-temperature massive steel slag heat-taking device through a feeding port of the high-temperature massive steel slag heat-taking device; then, a fan is used for supplying air, and cold air is sent into the high-temperature massive steel slag heat-taking device through an air distribution device of the high-temperature massive steel slag heat-taking device and exchanges heat with the high-temperature massive steel slag in the high-temperature massive steel slag heat-taking device; then the high-temperature air after heat exchange and temperature rise is discharged from a hot air outlet at the top of the high-temperature massive steel slag heat taking device and then is led into a heat waste heat boiler for waste heat utilization; then stopping air supply by a fan, discharging the cooled steel slag from a discharge hole at the bottom of the high-temperature massive steel slag heat-taking device, and loading the steel slag into a steel slag tank car; and finally, the steel slag tank wagon sends the cooled steel slag to a pressure hot stuffy tank for hot stuffy treatment. The effective utilization of the waste heat of the steel slag is realized, and the method has important significance for reducing the comprehensive energy consumption of iron and steel enterprises.
Drawings
FIG. 1 is a schematic overall view of the apparatus of the present invention;
FIG. 2 is a schematic structural view of a continuous feeding device 2 for high-temperature massive steel slag;
FIG. 3 is a schematic structural view of a high-temperature massive steel slag heat removal device 4;
FIG. 4 is a schematic top view of the air distribution device 48;
1. a roll squeezer; 2. a continuous high-temperature massive steel slag feeding device; 21. a steel slag feeding hopper; 22. a hinged feeding vehicle; 23. a track; 24. a driving wheel device; 25. a driven wheel device; 26. a steel slag discharging chute; 3. a fan; 4. a high-temperature massive steel slag heat-taking device; 41. a feeding port; 42. a feed inlet valve; 43. a hot air outlet; 44. a hot air outlet valve; 45. a temperature and/or pressure wireless sensor; 46. a device housing; 47. a heat taking kettle; 48. an air distribution device; 481. a main air distribution pipe; 482. a wind distribution main pipe valve; 483. a wind distribution surrounding pipe; 484. a wind distribution branch pipe valve; 485. a wind distribution branch pipe; 486. an air flow meter; 9. a discharge port valve; 410. a discharge port; 411. an access hole; 5. a steel slag tank car; 6. a waste heat boiler; 7. hot-stuffy tank; 8. and the air distribution system is automatically adjusted in the uniformity of the flow field.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The words "upper", "lower", "left" and "right" when used herein are merely intended to designate corresponding upper, lower, left and right directions in the drawings, and do not limit the structure thereof.
As shown in fig. 1 to 4, the steel slag waste heat utilization device comprises: the continuous high-temperature massive steel slag heating device comprises a roller press 1 and a transport tool, preferably a high-temperature massive steel slag continuous feeding device 2, a fan 3, a high-temperature massive steel slag heating device 4, a steel slag tank car 5, a waste heat boiler 6 and a pressure-heating stuffy tank 7; the roller press 1 is arranged at the feeding end of a transport tool and used for discharging the high-temperature massive steel slag rolled and crushed by the roller press 1 to be transported to the transport tool, and the discharging end of the transport tool is connected with a feeding port 41 of the high-temperature massive steel slag heat-taking device 4 and used for loading the high-temperature massive steel slag into the high-temperature massive steel slag heat-taking device 4; the fan 3 is connected with an air distribution device 48 of the high-temperature massive steel slag heat taking device and is used for conveying cold air into the high-temperature massive steel slag heat taking device 4 to exchange heat with the high-temperature massive steel slag, and a hot air outlet 43 of the high-temperature massive steel slag heat taking device 4 is connected with the waste heat boiler 6 and is used for guiding high-temperature gas after heat exchange into the waste heat boiler 6 to utilize waste heat; the steel slag tank wagon 5 is arranged at the bottom of the high-temperature massive steel slag heat-taking device 4, can move between the high-temperature massive steel slag heat-taking device 4 and the pressure-heating stuffy tank 7, and is used for conveying steel slag discharged from the bottom of the high-temperature massive steel slag heat-taking device to the pressure-heating stuffy tank 7. The transportation tool is the high-temperature massive steel slag continuous feeding device 2, wherein the feeding end of the transportation tool is positioned at a low position, and the discharging end of the transportation tool is positioned at a high position. Wherein the roller press 1 has an outlet at the bottom of the roller press 1 and above the feed end of the transport means. Wherein the transport means is a chain transport means. The high-temperature massive steel slag heat-taking device 4 is provided with a discharge hole, and the discharge hole is positioned at the bottom of the high-temperature massive steel slag heat-taking device 4 and is positioned at the upper part of the steel slag tank wagon 5. Wherein, the hot air outlet 43 is positioned at the top of the high-temperature massive steel slag heat-taking device 4 and is connected with the waste heat boiler 6 through a high-temperature resistant pipeline. The feeding port 1 is arranged on one side of the upper part of the high-temperature massive steel slag heat-taking device 4 and faces the discharge end of the transport tool. Preferably, an automatic flow field uniformity adjusting and air distributing system 8 is further included, which may be a known system as long as flow field uniformity can be achieved. And the air flow inside the heat taking kettle 47 of the high-temperature massive steel slag heat taking device 4 is regulated and controlled by utilizing the automatic flow field uniformity regulating and air distributing system 8, so that the air flow is uniformly distributed on the cross section inside the heat taking kettle 47.
As shown in fig. 2, the continuous feeding device 2 for high-temperature bulk steel slag comprises: the steel slag feeding device comprises a steel slag feeding hopper 21, a hinge type feeding vehicle 22, a track 23, a driving wheel device 24, a driven wheel device 25 and a steel slag discharging chute 26. The steel slag feeding hopper 21 is arranged at the lower part of an outlet at the bottom of the roller press 1 and used for discharging high-temperature massive steel slag rolled and crushed by the roller press 1 to be conveyed into the steel slag feeding hopper 21, the steel slag feeding hopper 21 is arranged above the hinged feeding trolley 22 and used for dumping the high-temperature massive steel slag in the steel slag feeding hopper 21 into the hinged feeding trolley 22, the driving wheel device 24 has two functions, namely, providing power to pull the hinged feeding trolley 23 to move on the rail 23, and overturning the hinged feeding trolley 22 after passing through the driving wheel device 24 to dump the high-temperature massive steel slag in the hinged feeding trolley 22 into the steel slag discharging chute 26, and the steel slag discharging chute 26 is connected with a feeding port 41 of the high-temperature massive steel slag heat-taking device 4. A driving pulley device 24 and a driven pulley device 25 are provided on the upstream side and the downstream side of the articulated loading wagon 23, respectively, for guiding the articulated loading wagon 23 to circulate on the rail 23. Alternatively, any known transportation means may be used for loading the high temperature bulk steel slag into the high temperature bulk steel slag heat removal device 4, such as a high temperature resistant belt conveyor or the like.
As shown in FIGS. 3 to 4, the heat removal device 4 for high-temperature massive steel slag comprises: a feeding port 41, a hot air outlet 43 and a sensor 45, wherein the sensor 45 is preferably a temperature and/or pressure wireless sensor, a device shell 46, a heat taking kettle 47, an air distribution device 48 and a discharge port 410; the heat taking kettle 47 is supported by the device shell 46; the feeding port 41 is arranged on one side of the upper part of the heat taking kettle 47 and is used for conveying high-temperature massive steel slag to be heated into the heat taking kettle 47 from the feeding port 41; the air distribution device 48 is installed at the lower part of the heat taking kettle 47, as shown in fig. 3-4, the air distribution device 48 comprises an air distribution header pipe 481, an air distribution surrounding pipe 483 and a plurality of air distribution branch pipes 485, the air distribution surrounding pipe 483 is annular and is annularly sleeved outside the circumference of the heat taking kettle 47, the air distribution header pipe 481 is connected to the annular outer side of the air distribution surrounding pipe 483 and is used for conveying cold air into the air distribution surrounding pipe 483, one end of the air distribution branch pipe 485 is connected to the annular inner side of the air distribution surrounding pipe 483, and the air distribution branch pipes 485 extend obliquely downwards from the annular inner side of the air distribution surrounding pipe 483; the other end of the air distribution branch pipe 485 is communicated with the heat taking kettle 47 and is used for uniformly sending cold air into the heat taking kettle 47 along the circumferential direction after passing through the air distribution surrounding pipe 483 and the air distribution branch pipe 485 and exchanging heat with high-temperature massive steel slag in the heat taking kettle 47; the hot air outlet 43 is arranged at the top of the heat taking kettle 47 and used for discharging hot air formed after heat exchange through the hot air outlet 43 so as to utilize waste heat; the discharge port 410 is arranged at the bottom of the heat taking kettle 47 and is used for discharging cold slag formed after heat exchange through the discharge port 410; the sensors 45 are arranged at the middle upper part of the heat taking kettle 47, the number of the sensors 45 is the same as that of the air distribution branch pipes 485, and the installation positions of the sensors 45 in the circumferential direction correspond to the installation positions of the air distribution branch pipes 485 in the circumferential direction in angle one-to-one mode. Because the temperature and/or pressure at the upper part of each wind distribution branch pipe need to be accurately measured, the installation positions of the sensors need to be in one-to-one correspondence with the installation positions of the wind distribution branch pipes.
The high-temperature massive steel slag heat-taking device further comprises a discharge port valve 4-9, wherein the discharge port valve 4-9 is installed on the discharge port 410 and used for controlling the opening and closing of the discharge port 410. As shown in fig. 2, an included angle between the circular planes defined by the axes of the air distribution branch pipes 485 and the annular axis of the air distribution bustle pipe 483 is 20-30 degrees, and the air distribution branch pipes are beneficial to conveying cold air into the heat taking kettle from the circumferential direction uniformly with small resistance by setting a certain angle.
The device for heating the high-temperature massive steel slag further comprises a hot air outlet valve 44, wherein the hot air outlet valve 44 is installed on the hot air outlet 43 and used for controlling the opening and closing of the hot air outlet 43. The feeding port 41 is arranged on one side of the upper part of the heat taking kettle 47 according to the incoming material direction; the high-temperature massive steel slag heat-taking device further comprises a material inlet valve 42, wherein the material inlet valve 42 is installed on the material inlet 41 and used for controlling the opening and closing of the material inlet 41. The high-temperature massive steel slag heat-taking device further comprises a manhole 411, the manhole 411 is installed in the middle of the heat-taking kettle 47, and the installation height of the sensor 45 is located between the feeding port 41 and the manhole 411; the installation height of the air distribution device 48 is positioned between the access hole 411 and the discharge hole 410; the heat extraction kettle 47 is of a hollow cylindrical structure.
As shown in fig. 4, the wind distribution device 48 further includes: a wind distribution main pipe valve 482, a wind distribution branch pipe valve 484 and an air flow meter 486; the air distribution manifold valve 482 is arranged on the air distribution manifold 481 and is used for controlling the opening and closing of the air distribution manifold 481; the air distribution branch pipe valves 484 are arranged on the air distribution branch pipes 485 and are used for controlling the opening and closing of the air distribution branch pipes 485; an air flow meter 486 is provided on the air distribution manifold 481 for measuring the amount of air supply in real time. The number of the air distribution branch pipe valves 484 and the number of the air distribution branch pipes 485 are arranged according to the diameter of the device shell 46, and the number of the air distribution branch pipes 485 is 3 or more; preferably, the heat-taking object of the high-temperature massive steel slag heat-taking device comprises but is not limited to high-temperature massive steel slag, and all massive solids with the temperature higher than 150 ℃ and lower than the melting point of the heat-taking object can be subjected to heat-taking by the device.
As shown in fig. 1 to 4, the invention further relates to a steel slag waste heat operation mode, which utilizes the utilization device for waste heat utilization, and comprises the following steps:
discharging the high-temperature massive steel slag rolled and crushed by the roller press 1 onto a transport tool, preferably selecting the transport tool as a high-temperature massive steel slag continuous feeding device 2; conveying the high-temperature massive steel slag to a high place through a conveying tool, and loading the high-temperature massive steel slag into the high-temperature massive steel slag heat-taking device 4 through a feeding port of the high-temperature massive steel slag heat-taking device 4; the fan 3 supplies air, and cold air is sent into the high-temperature massive steel slag heat-taking device 4 through the air distribution device 48 of the high-temperature massive steel slag heat-taking device 4 and exchanges heat with the high-temperature massive steel slag in the high-temperature massive steel slag heat-taking device 4; the high-temperature air after heat exchange and temperature rise is discharged from a hot air outlet 43 at the top of the high-temperature massive steel slag heat taking device 4 and then is led into a heat waste heat boiler 6 for waste heat utilization; the fan 3 stops supplying air, and the cooled steel slag is discharged from a discharge port 410 at the bottom of the high-temperature massive steel slag heat-taking device 4 and is loaded into a steel slag tank wagon 5; and the steel slag tank wagon 5 sends the cooled steel slag to a pressure hot stuffy tank 7 for hot stuffy treatment.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (8)
1. The utility model provides a slag waste heat utilization equipment which characterized in that, slag waste heat utilization equipment includes: the device comprises a roller press (1), a transport tool, a fan (3), a high-temperature massive steel slag heat-taking device (4), a steel slag tank car (5), a waste heat boiler (6) and a pressure-heating stuffy tank (7); the roller press (1) is arranged at the feeding end of a transport tool and used for discharging the high-temperature massive steel slag which is rolled and crushed by the roller press (1) to be transported to the transport tool, and the discharging end of the transport tool is connected with a feeding port (41) of a high-temperature massive steel slag heat-taking device (4) and used for loading the high-temperature massive steel slag into the high-temperature massive steel slag heat-taking device (4); the fan (3) is connected with an air distribution device (48) of the high-temperature massive steel slag heat taking device and is used for conveying cold air into the high-temperature massive steel slag heat taking device (4) to exchange heat with the high-temperature massive steel slag, and a hot air outlet (43) of the high-temperature massive steel slag heat taking device (4) is connected with the waste heat boiler (6) and is used for guiding high-temperature gas after heat exchange into the waste heat boiler (6) to utilize waste heat; the steel slag tank wagon (5) is arranged at the bottom of the high-temperature massive steel slag heat-taking device (4), can move between the high-temperature massive steel slag heat-taking device (4) and the pressure-heating stuffy tank (7), and is used for conveying the steel slag discharged from the bottom of the high-temperature massive steel slag heat-taking device to the pressure-heating stuffy tank (7).
2. The steel slag waste heat utilization device according to claim 1, wherein the transportation means is the high-temperature massive steel slag continuous feeding device (2), wherein the feeding end of the transportation means is located at a lower position, and the discharging end of the transportation means is located at a higher position.
3. The device for utilizing the residual heat of the steel slag according to any one of claims 1 to 2, wherein the roller press (1) is provided with an outlet, and the outlet is positioned at the bottom of the roller press (1) and at the upper part of the feeding end of a transport tool.
4. The device for utilizing the waste heat of steel slag according to any one of claims 1 to 2, wherein the transportation means is a chain transportation means.
5. The steel slag waste heat utilization device according to any one of claims 1 to 2, characterized in that the high-temperature massive steel slag heat removal device (4) is provided with a discharge port, and the discharge port is positioned at the bottom of the high-temperature massive steel slag heat removal device (4) and at the upper part of the steel slag tanker (5).
6. The steel slag waste heat utilization device according to any one of claims 1 to 2, characterized in that the hot air outlet (43) is located at the top of the high-temperature massive steel slag heat-taking device (4) and is connected with the waste heat boiler (6) through a high-temperature resistant pipeline.
7. The steel slag waste heat utilization device according to any one of claims 1 to 2, characterized in that the feeding port (1) is arranged on one side of the upper part of the high-temperature massive steel slag heat-taking device (4) and faces the discharge end of the transport tool.
8. An operation mode of a steel slag waste heat utilization device is characterized in that the steel slag waste heat utilization device of claims 1-7 is adopted, and the operation mode comprises the following steps:
s1: discharging the high-temperature massive steel slag rolled and crushed by the roller press (1) onto a transport tool, preferably selecting the transport tool as a high-temperature massive steel slag continuous feeding device (2);
s2: conveying the high-temperature massive steel slag to a high place through a conveying tool, and loading the high-temperature massive steel slag into the high-temperature massive steel slag heat-taking device (4) through a feeding port of the high-temperature massive steel slag heat-taking device (4);
s3: the fan (3) supplies air, and cold air is sent into the high-temperature massive steel slag heat-taking device (4) through the air distribution device (48) of the high-temperature massive steel slag heat-taking device (4) and exchanges heat with the high-temperature massive steel slag in the high-temperature massive steel slag heat-taking device;
s4: the high-temperature air after heat exchange and temperature rise is discharged from a hot air outlet (43) at the top of the high-temperature massive steel slag heat taking device (4) and then is led into a heat waste heat boiler (6) for waste heat utilization;
s5: stopping air supply by the fan (3), discharging the cooled steel slag from a discharge hole (410) at the bottom of the high-temperature massive steel slag heat-taking device (4) and loading the steel slag into a steel slag tank car (5);
s6: the steel slag tank wagon (5) sends the steel slag after cooling to a pressure hot stuffy tank (7) for hot stuffy treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010890550.0A CN112251548A (en) | 2020-08-29 | 2020-08-29 | Steel slag waste heat utilization device and operation mode thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010890550.0A CN112251548A (en) | 2020-08-29 | 2020-08-29 | Steel slag waste heat utilization device and operation mode thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854911A (en) * | 2022-04-22 | 2022-08-05 | 晏灏 | Device and method for utilizing heat energy of high-temperature steel slag |
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2020
- 2020-08-29 CN CN202010890550.0A patent/CN112251548A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854911A (en) * | 2022-04-22 | 2022-08-05 | 晏灏 | Device and method for utilizing heat energy of high-temperature steel slag |
| CN114854911B (en) * | 2022-04-22 | 2023-11-24 | 南京迎信技术有限公司 | Device and method for utilizing heat energy of high-temperature steel slag |
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Application publication date: 20210122 |