CN210602846U - Steel slag waste heat utilization device - Google Patents
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- CN210602846U CN210602846U CN201921612560.7U CN201921612560U CN210602846U CN 210602846 U CN210602846 U CN 210602846U CN 201921612560 U CN201921612560 U CN 201921612560U CN 210602846 U CN210602846 U CN 210602846U
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Abstract
The utility model relates to a slag waste heat utilization equipment, 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 cubic slag of high temperature after will rolling the breakage packs into slag and gets hot device (4), gets hot device in the slag, utilizes the direct heat transfer between air and cubic slag to get hot, and the air after will being heated by the slag lets in exhaust-heat boiler (6) and produces steam and utilizes, and slag after the cooling returns slag roll-in breakage-the pressure hot stifled jar (7) of pressure that have smothering technology and carries out the hot smothering and handle, the utility model discloses the effective utilization of slag waste heat has been realized to the advantage, and is significant to reducing the comprehensive energy consumption of steel enterprise.
Description
Technical Field
The utility model relates to a slag waste heat utilization equipment belongs to slag waste heat recovery field.
Background
About 0.12-0.14 ton of steel slag is generated per 1 ton of steel, the generation amount of steel slag in China in 2018 is about 1.1 hundred million tons, and the utilization of waste heat of the steel slag is almost 0, so that huge energy waste is caused.
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, the process method of the utility model can realize the utilization of the waste heat of the high-temperature massive steel slag on the basis of the steel slag rolling crushing-waste heat self-decomposition pressing hot smoldering process technology, and can reduce the potential safety hazard of the pressing hot smoldering link while saving energy.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a slag waste heat utilization equipment and utilization method, to the broken-there is the hot smoldering technical equipment of pressure of slag roll-in, from the 800 ℃ slag after the broken cooling of roll-in to the hot smoldering link slag of pressure between going into jar temperature 300 ℃'s the technology demand, there is 500 ℃ difference in temperature, the utility model discloses the technology can realize the waste heat utilization of the cubic slag of high temperature of this temperature section.
The utility model provides a slag waste heat utilization equipment, 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 the 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 (4-1) 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 (4-8) 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 (4-3) of the high-temperature massive steel slag heat taking device (4) is connected with a 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).
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 which is located at the bottom of the roller press (1) and at the upper part of 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 car (5).
Wherein, the hot air outlet (4-3) 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.
The utility model discloses still relate to a steel slag waste heat utilization method, preferably adopt foretell utilization device to carry out waste heat utilization, include following step:
(1) 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);
(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);
(3) 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 (4-8) 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) high-temperature air subjected to heat exchange and temperature rise is discharged from a hot air outlet (4-3) at the top of the high-temperature massive steel slag heat taking device (4) and then is guided into a heat waste heat boiler (6) for waste heat utilization;
(5) the fan (3) stops blowing air, the steel slag after being cooled is discharged from a discharge hole (4-10) at the bottom of the high-temperature massive steel slag heat-taking device (4) and is loaded into a steel slag tank wagon (5),
(6) the steel slag tank wagon (5) sends the steel slag after cooling to a pressure hot stuffy tank (7) for hot stuffy treatment.
The air distribution system is automatically adjusted and controlled by utilizing the uniformity of the flow field to regulate and control the air flow in the high-temperature massive steel slag heat-taking device, so that the air flow is stably distributed on the cross section in the high-temperature massive steel slag heat-taking device.
The waste heat utilization object is high-temperature massive steel slag crushed by rolling through the rolling machine, but is not limited to the high-temperature massive steel slag, and all high-temperature massive materials can be subjected to waste heat utilization by adopting the process method.
The utility model has the advantages that the effective utilization of the waste heat of the steel slag is realized, and the device has important significance for reducing the comprehensive energy consumption of iron and steel enterprises.
Drawings
FIG. 1 is a schematic view of a steel slag waste heat utilization device.
FIG. 2 is a schematic view of a continuous feeding device for high-temperature bulk steel slag.
FIG. 3 is a schematic view of a device for removing heat from high-temperature bulk steel slag.
Fig. 4 is a schematic top view of the wind distribution device.
1. Roller press 2, continuous high-temperature massive steel slag feeding device (2-1, steel slag feeding hopper 2-2, hinge type feeding vehicle 2-3, track 2-4, driving wheel device 2-5, driven wheel device 2-6, steel slag discharging chute) 3, fan 4, high-temperature massive steel slag heat-taking device (4-1, feeding port 4-2, feeding port valve 4-3, hot air outlet 4-4, hot air outlet valve 4-5, wireless temperature and/or pressure sensor 4-6, device shell 4-7, heat-taking kettle 4-8, air distribution device (4-8-1, air distribution main pipe 4-8-2, air distribution main pipe valve 4-8-3, air distribution surrounding pipe 4-8-4, air distribution branch pipe valve 4-8-5, air distribution branch pipe 4-8-5 -8-6 air flow meter) 9, a discharge port valve 4-10, a discharge port 4-11, a manhole) 5, a steel slag tanker 6, a waste heat boiler 7, a hot stuffy tank 8, and an automatic flow field uniformity adjusting and air distributing system.
Detailed Description
As shown in fig. 1-3, the utility model provides a steel slag waste heat utilization device, the steel slag waste heat utilization device includes: 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 4-1 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 4-8 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 4-3 of the high-temperature massive steel slag heat taking device 4 is connected with a 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 4-3 is positioned at the top of the high-temperature massive steel slag heat-taking device 4 and is connected with a 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 kettles 4-7 of the high-temperature massive steel slag heat taking device 4 is regulated and controlled by utilizing the flow field uniformity automatic regulation air distribution system 8, so that the air flow is uniformly distributed on the cross sections inside the heat taking kettles 4-7.
As shown in fig. 2, the continuous feeding device for high-temperature massive steel slag comprises: the steel slag feeding device comprises a steel slag feeding hopper 2-1, a hinge type feeding vehicle 2-2, a track 2-3, a driving wheel device 2-4, a driven wheel device 2-5 and a steel slag discharging chute 2-6. The steel slag feeding hopper 2-1 is arranged at the lower part of an outlet at the bottom of the roller press 1 and is used for discharging high-temperature blocky steel slag rolled and crushed by the roller press 1 to convey the high-temperature blocky steel slag into the steel slag feeding hopper 2-1, the steel slag feeding hopper 2-1 is arranged above the hinge type feeding trolley 2-2 and is used for dumping the high-temperature blocky steel slag in the steel slag feeding hopper 2-1 into the hinge type feeding trolley 2-2, the driving wheel device 2-4 has two functions, namely, the driving wheel device provides power to pull the hinge type feeding trolley 2-3 to move on the track 2-3, the hinge type feeding trolley 2-2 is overturned after passing through the driving wheel device 2-4, and the high-temperature blocky steel slag in the hinge type feeding trolley 2-2 is dumped onto the steel slag discharging chute 2-6, the steel slag discharging chute 2-6 is connected with a feeding port 4-1 of the high-temperature massive steel slag heat-taking device 4. The driving wheel device 2-4 and the driven wheel device 2-5 are respectively arranged at the upstream side and the downstream side of the hinged feeding car 2-3 and are used for guiding the hinged feeding car 2-3 to circularly move on the track 2-3. 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 fig. 3-4, the high-temperature massive steel slag heat-extracting device 4 comprises: a feeding port 4-1, a hot air outlet 4-3 and a sensor 4-5, wherein the sensor 4-5 is preferably a temperature and/or pressure wireless sensor, a device shell 4-6, a heat taking kettle 4-7, an air distribution device 4-8 and a discharge port 4-10; the heat taking kettle 4-7 is supported by the device shell 4-6; the feeding port 4-1 is arranged on one side of the upper part of the heat taking kettle 4-7 and is used for conveying high-temperature massive steel slag to be heated into the heat taking kettle 4-7 from the feeding port 4-1; the air distribution device 4-8 is arranged at the lower part of the heat taking kettle 4-7, as shown in figure 3-4, the air distribution device 4-8 comprises an air distribution main pipe 4-8-1, an air distribution surrounding pipe 4-8-3 and a plurality of air distribution branch pipes 4-8-5, the air distribution surrounding pipe 4-8-3 is annular, and is annularly sleeved outside the circumference of the heat taking kettle 4-7, the air distribution main pipe 4-8-1 is connected with the annular outer side of the air distribution surrounding pipe 4-8-3, the air distribution branch pipes 4-8-5 extend obliquely downwards from the annular inner sides of the air distribution surrounding pipes 4-8-3; the other end of the air distribution branch pipe 4-8-5 is communicated with the heat taking kettle 4-7 and is used for uniformly sending cold air into the heat taking kettle 4-7 along the circumferential direction after passing through the air distribution surrounding pipe 4-8-3 and the air distribution branch pipe 4-8-5 and exchanging heat with high-temperature blocky steel slag in the heat taking kettle 4-7; the hot air outlet 4-3 is arranged at the top of the heat taking kettle 4-7 and used for discharging hot air formed after heat exchange through the hot air outlet 4-3 to utilize waste heat; the discharge port 4-10 is arranged at the bottom of the heat taking kettle 4-7 and used for discharging cold slag formed after heat exchange through the discharge port 4-10; the sensors 4-5 are arranged at the middle upper part of the heat taking kettle 4-7, the number of the sensors 4-5 is the same as that of the air distribution branch pipes 4-8-5, and the installation positions of the sensors 4-5 in the circumferential direction correspond to the installation positions of the air distribution branch pipes 4-8-5 in the circumferential direction in an angle one-to-one manner. 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 4-10 and used for controlling the opening and closing of the discharge port 4-10. As shown in fig. 2, an included angle between the circular planes defined by the axes of the air distribution branch pipes 4-8-5 and the annular axes of the air distribution surrounding pipes 4-8-3 is 20 degrees to 30 degrees, and the arrangement of a certain angle is favorable for conveying cold air into the heat taking kettle from the circumferential direction uniformly with small resistance.
The device for heating the high-temperature massive steel slag further comprises a hot air outlet valve 4-4, wherein the hot air outlet valve 4-4 is installed on the hot air outlet 4-3 and used for controlling the opening and closing of the hot air outlet 4-3. Wherein the feeding port 4-1 is arranged on one side of the upper part of the heat taking kettle 4-7 according to the incoming material direction; the high-temperature massive steel slag heat-taking device further comprises a material inlet valve 4-2, wherein the material inlet valve 4-2 is installed on the material inlet 4-1 and used for controlling the opening and closing of the material inlet 4-1. The high-temperature massive steel slag heat-taking device further comprises a manhole 4-11, the manhole 4-11 is installed in the middle of the heat-taking kettle 4-7, and the installation height of the sensor 4-5 is located between the feeding port 4-1 and the manhole 4-11; the installation height of the air distribution device 4-8 is positioned between the access hole 4-11 and the discharge hole 4-10; the heat taking kettle 4-7 is a hollow columnar structure.
As shown in fig. 4, the wind distribution device 4-8 further includes: 4-8-2 parts of a wind distribution main pipe valve, 4-8-4 parts of a wind distribution branch pipe valve and 4-8-6 parts of an air flow meter; the air distribution main pipe valve 4-8-2 is arranged on the air distribution main pipe 4-8-1 and used for controlling the opening and closing of the air distribution main pipe 4-8-1; the air distribution branch pipe valves 4-8-4 are arranged on the air distribution branch pipes 4-8-5 and used for controlling the opening and closing of the air distribution branch pipes 4-8-5; the air flow meter 4-8-6 is arranged on the air distribution main pipe 4-8-1 and used for measuring the air supply quantity in real time. The number of the air distribution branch pipe valves 4-8-4 and the number of the air distribution branch pipes 4-8-5 are arranged according to the diameter of the device shell 4-6, and the number of the air distribution branch pipes 4-8-5 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. 1-4, the utility model also relates to a method for utilizing the residual heat of steel slag, preferably using the above-mentioned utilization device to utilize the residual heat, comprising the following steps:
(1) 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;
(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;
(3) the fan 3 supplies air, and cold air is sent into the high-temperature massive steel slag heat-taking device 4 through an air distribution device 4-8 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;
(4) the high-temperature air after heat exchange and temperature rise is discharged from a hot air outlet 4-3 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;
(5) the fan 3 stops blowing air, the steel slag after being cooled is discharged from a discharge port 4-10 at the bottom of the high-temperature massive steel slag heat-taking device 4 and is loaded into a steel slag tank wagon 5,
(6) and the steel slag tank wagon 5 sends the cooled steel slag to a pressure hot stuffy tank 7 for hot stuffy treatment.
Claims (7)
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 the 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 (4-1) 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 (4-8) 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 (4-3) of the high-temperature massive steel slag heat taking device (4) is connected with a 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 steel slag according to one of claims 1 to 2, wherein the roller press (1) is provided with an outlet which is positioned at the bottom of the roller press (1) and is positioned at the upper part of the feeding end of a transport tool.
4. The device for utilizing the residual 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 one of claims 1 to 2, wherein 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 one of claims 1 to 2, characterized in that the hot air outlet (4-3) 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.
7. The steel slag waste heat utilization device according to one of claims 1 to 2, characterized in that the feeding port (4-1) is arranged at one side of the upper part of the high temperature massive steel slag heat-taking device (4) and faces the discharging end of the transport tool.
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| CN201921612560.7U CN210602846U (en) | 2019-09-26 | 2019-09-26 | Steel slag waste heat utilization device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530165A (en) * | 2019-09-26 | 2019-12-03 | 中冶节能环保有限责任公司 | A kind of steel slag waste heat is using device and utilizes method |
| CN113413944A (en) * | 2021-07-29 | 2021-09-21 | 中冶节能环保有限责任公司 | Device and method for crushing steel slag surface crusting |
-
2019
- 2019-09-26 CN CN201921612560.7U patent/CN210602846U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530165A (en) * | 2019-09-26 | 2019-12-03 | 中冶节能环保有限责任公司 | A kind of steel slag waste heat is using device and utilizes method |
| CN113413944A (en) * | 2021-07-29 | 2021-09-21 | 中冶节能环保有限责任公司 | Device and method for crushing steel slag surface crusting |
| CN113413944B (en) * | 2021-07-29 | 2024-01-09 | 中冶节能环保有限责任公司 | Device and method for crushing crusts on steel slag surface |
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