KR20150053269A - Manufacturing facility line and thermoelectric power generation method - Google Patents

Abstract

A thermoelectric generator having a thermoelectric power generation unit is provided in a facility line of the present invention and the thermoelectric power generation unit is faced to the heat source so that the heat source is further heated by the heat source, And / or the output of the thermoelectric power generating unit, it is possible to efficiently convert the thermal energy of the heat source, whose emission state varies in the heat of the manufacturing facility in which the heat source moves, , And the heat of the manufacturing facility can be obtained.

Description

TECHNICAL FIELD [0001] The present invention relates to a manufacturing facility thermal and thermoelectric power generation method,

The present invention relates to a facility line of a steelworks having a moving heat source and a slab, a rough bar and a steel strip in a hot rolling process, And a thermoelectric power generating method using the same. 2. Description of the Related Art

The steel sheet manufacturing equipment for casting and rolling with the thermoelectric generator for converting the heat energy of the hot slab or hot rolled steel sheet into electrical energy and recovering the heat energy in the steel sheet manufacturing process in which the manufacturing facility heat is continuously cast and rolled Heat, and a method of thermoelectric generation using the same.

It has long been known as a Seebeck effect that an electromotive force is generated between a high temperature part and a low temperature part when a temperature difference is given to a different type conductor or semiconductor, It is also known to convert heat directly into electric power using a thermoelectric generator.

BACKGROUND ART [0002] In recent years, for example, in a manufacturing facility such as a steelmaking plant, energy generated as waste heat by power generation using the above-described thermoelectric generator, for example, energy of copying of steel materials such as slabs, And the use of thermal energy by the public is being promoted.

As a method of using heat energy, for example, Patent Document 1 discloses a method of disposing a heat receiving device on the face of a hot object, converting the thermal energy of the hot object into electric energy, .

Patent Document 2 discloses a method in which a thermoelectric module is brought into contact with thermal energy being treated as waste heat to convert it into electrical energy and recover it.

Patent Document 3 describes a method of recovering the amount of heat dissipated from the cooling material to the atmosphere in the cooling floor as electric power.

Patent Document 4 describes a heat recovery method and a cooling floor which can efficiently convert thermal energy of a high-temperature material into electrical energy by thermal conduction of rake.

Patent Document 5 describes a heat recovery apparatus for recovering heat generated by a treatment of a metal material in a hot rolling line and storing the recovered heat as electric power.

Japanese Patent Application Laid-Open No. 59-198883 Japanese Patent Application Laid-Open No. 60-34084 Japanese Unexamined Patent Publication No. 10-296319 Japanese Patent Application Laid-Open No. 2006-263783 Japanese Laid-Open Patent Publication No. 2011-62727

However, in Patent Document 1, there is a description of a slab continuous casting line that can be applied to a slab, but it is also possible to change the temperature of the slab in the actual operation, the amount of heat released due to the variation of the slab amount ) Of the heat source temperature due to the fluctuation of the operating conditions.

In addition, in Patent Document 2, since the module needs to be fixed to a heat source, there is a problem that the technique can not be applied to a moving heat source such as a hot rolling facility.

Patent Document 3 discloses that the material temperature of the middle and high temperature portions is 300 占 폚 or higher and uses the convection heat after cooling the material and the radiant heat therefrom. However, the temperature change of the high temperature material, (Heat energy) due to the variation of the heat source temperature due to the fluctuation of the heat source temperature.

The technology described in Patent Document 4 is specialized only for heat recovery by heat conduction, and is a heat source that changes the temperature of a high-temperature material in a yarn manufacturing operation, the amount of emitted heat (heat energy) The change in temperature is not considered.

The technique described in Patent Document 5 is not necessarily required for the practical operation, and the power storage means described in the same document is not necessarily required.

SUMMARY OF THE INVENTION The present invention has been developed in view of the above-described phenomenon, and it is an object of the present invention to provide a hot rolling mill in which a heat source moves (flows), a steel strip manufacturing facility for casting and rolling, Hot rolling equipment heat provided with a thermoelectric generator capable of efficiently converting thermal energy of hot slabs and hot rolled steel sheets into electric energy and recovered, and heat of steel sheet manufacturing equipment for casting and rolling are provided together with a thermoelectric generating method using them .

As a result of intensive studies to solve the above-described problems, the inventors of the present invention have recognized that the thermoelectric power generation can be performed with high efficiency by adjusting the installation position such as the distance between the heat source and the thermoelectric power generating unit, Hot rolling equipment heat with a thermoelectric generator capable of utilizing heat in a new steel mill and steel sheet manufacturing equipment heat for casting and rolling have been developed together with a thermoelectric generating method using them.

The present invention is based on the above recognition.

That is, the structure of the present invention is as follows.

1. In a manufacturing facility column of a steelworks having a moving heat source,

And the thermoelectric generator unit includes a thermoelectric generator unit that is provided in the thermoelectric generator unit in such a manner that the temperature of at least one of the heat sources and / or the output of the thermoelectric generator unit The heat of the manufacturing facility installed in accordance with.

2. The hot-rolling equipment array as claimed in any one of claims 1 to 3, wherein the manufacturing facility heat is a hot-rolling equipment line including a roughing mill in which hot slabs are roughly rolled to make a rough bar and a finish rolling mill in which hot-

The thermoelectric power generating unit is disposed at a position from the front of the rough rolling mill to the hot rolled steel strip conveying route and at a position corresponding to the slab, the rough bar, and the hot rolled steel strip, and also the temperature of at least one of the slab, The manufacturing equipment column described in 1 above, which is installed in accordance with the output of the thermoelectric generator unit.

3. The manufacturing facility column according to the above 2, wherein the thermoelectric power generating unit is installed close to the high temperature part at a low temperature part, in accordance with the temperature of at least one of the slab, the bar and the hot rolled steel strip and / or the output of the thermoelectric power generating unit.

4. The thermoelectric module in the thermoelectric generator unit according to any one of 2 to 3 above, wherein the high temperature portion is densely arranged with respect to the low temperature portion in accordance with the temperature of at least one of the slab, the bar and the hot- Manufacturing plant heat.

5. The thermoelectric generator according to any one of claims 1 to 3, wherein the thermoelectric power generating unit is provided with at least one of the slab, the rough bar, and the hot-rolled coil, and / or the output of the thermoelectric generator unit, And a moving means for controlling the distance from at least one of the hot-rolled steel strip.

6. The manufacturing facility heat as described in any of 2 to 5 above, wherein the thermoelectric generator further comprises a heat reflecting material.

7. The manufacturing facility column as described in any of 2 to 6 above, wherein the thermoelectric generator is shaped to surround at least one of the slab, the bar, and the hot-rolled steel strip.

8. The thermoelectric generator according to any one of 2 to 7, wherein at least one opening is formed.

9. The manufacturing facility column as described in any of 2 to 8 above, wherein the moving means performs the integral movement of the thermoelectric power generating unit.

10. The thermoelectric generator according to any one of 2 to 9, wherein the thermoelectric generator further comprises a movement judging means for judging, based on the output of the thermoelectric generator, the operation ratio of the thermoelectric generator unit Ten.

11. A method of thermoelectric generation in which at least one heat of a slab, a joining bar, and a hot-rolled steel strip is heat-treated using the manufacturing facility heat described in any one of 2 to 10 above to conduct thermoelectric power generation.

12. The thermoelectric generator according to 11 above, wherein the operation of the thermoelectric generator unit is controlled by using the operation judging means of the above-mentioned manufacturing equipment column.

13. A steel plate manufacturing facility column for casting and rolling comprising the slab casting machine and the rolling line,

The thermoelectric power generating unit is characterized in that the slab cooling device and the slab cutting device of the slab casting machine are provided with a slab cooling device exit side, a slab cutting device inside and a slab cutting device exit side, and a holding furnace of the rolling line, In the induction furnace, in front of the retaining furnace in the rolling mill and roller table, behind the retaining furnace, in front of the induction furnace, behind the induction furnace, in front of the rolling mill, behind the rolling mill, The manufacturing facility heat as set forth in 1 above, wherein at least one selected position is replaced by a temperature of at least one of the slab and / or the hot-rolled plate and the output of the thermoelectric power unit.

14. The manufacturing facility column as set forth in 13 above, wherein the thermoelectric power generating unit is installed close to the high temperature part in the low temperature part, according to the temperature of at least one of the slab and the hot rolled steel sheet and / or the output of the thermoelectric power generating unit.

15. The thermoelectric generator module in the thermoelectric generator unit according to any one of 13 to 14 above, wherein the high temperature section is densely arranged with respect to the low temperature section in accordance with the temperature of at least one of the slab and the hot- .

16. The thermoelectric generator according to any one of the preceding claims, wherein at least one of the thermoelectric power generating unit, the slab and the hot-rolled steel sheet according to the temperature and / or the output obtained by measuring the temperature of at least one of the slab and the hot- And a moving means for controlling a distance between the heating means and the heating means.

17. The manufacturing facility heat described in any one of 13 to 16 above, wherein the thermoelectric generator further comprises a heat reflecting material.

18. The manufacturing facility heat described in any one of 13 to 17 above, wherein the thermoelectric generator has a shape surrounding at least one of the slab and the hot-rolled steel sheet.

19. The thermoelectric generator according to any one of 13 to 18, wherein at least one opening is formed.

20. The manufacturing facility column according to any one of 13 to 19, wherein the moving means performs the integral movement of the thermoelectric power generating unit.

21. The manufacturing equipment column as set forth in any one of 13 to 20 above, wherein the thermoelectric generator further comprises a movement judging means for judging, based on the output of the thermoelectric generator, the operation ratio of the thermoelectric generator unit.

22. A thermoelectric generating method for thermally generating electricity by receiving at least one heat of a slab and a hot-rolled sheet by using the manufacturing facility heat described in any one of 13 to 21 above.

23. The thermoelectric generator according to 22 above, wherein the operation of the thermoelectric generator unit is controlled by using the operation judging means of the above-mentioned manufacturing equipment column.

According to the present invention, since the thermoelectric power generating unit and the heat source (the slab, the bar, the hot-rolled coil, and the hot-rolled plate) can be maintained in a state of good power generation efficiency, the power generation efficiency is effectively improved. As a result, the heat energy emitted from the heat source can be recovered at a high level compared to the conventional case.

1 is a view showing an example of installation of a thermoelectric generator according to an embodiment of the present invention.
2 is a cross-sectional view of a thermoelectric generator unit according to an embodiment of the present invention.
3 is a view showing an installation place (hot rolling facility) of a thermoelectric generator according to an embodiment of the present invention.
4 is a view showing an installation place (a steel plate manufacturing facility for casting and rolling) of a thermoelectric generator according to an embodiment of the present invention.
5 is a graph showing the relationship between the generation output ratio and the distance between the steel material and the thermoelectric power generating unit.
6 is a cross-sectional view showing the arrangement of the thermoelectric module in the thermoelectric generator unit according to the embodiment of the present invention.
7 (A) and 7 (B) are views showing an example of installation of a thermoelectric generator with a reflector according to the present invention.
8 (A) and 8 (B) are views showing other examples of installation of the thermoelectric generator unit according to the present invention.

(Mode for carrying out the invention)

Hereinafter, the present invention will be described in detail.

1 is a schematic view for explaining an embodiment of a thermoelectric generator of the present invention. In the figure, reference numeral 1 denotes a thermoelectric power generating unit and 2 denotes a heat source.

In the present invention, the thermoelectric generator is provided with the thermoelectric generator unit 1 arranged in accordance with the temperature of the heat source 2 and / or the output of the thermoelectric generator unit, in place of the heat source 2.

The heat source in the present invention may be a slab, a hot bar, a hot bar (hereinafter simply referred to as a slab or the like) in a hot rolling apparatus, a slab or a hot rolled plate in a casting and rolling process Bar, heat steel plate, hot-rolled steel plate, steel plate, steel bar, steel strip, strip, plate, and the like are changed, but in the present invention, they are referred to as slabs and the like.

Further, the thermoelectric generator of the present invention includes at least one thermoelectric generator unit in the width direction and the length direction of the slab or the like. The thermoelectric power generation unit has hydrothermal means, such as a slab, at least one thermoelectric power generation module, and a heat dissipation means.

The hydrothermal means, depending on the material, may be several tens degrees, sometimes hundreds of degrees, on the high temperature side of the thermoelectric element. Therefore, the hydrothermal means may be any one having heat resistance and durability at that temperature. For example, in addition to copper, a copper alloy, aluminum, an aluminum alloy, and ceramics, general steel materials can be used.

Further, since aluminum has a low melting point, it can be used in a case where thermal design is performed in accordance with a heat source and it can withstand heat. In addition, since the ceramics have a low thermal conductivity, a temperature difference is generated in the heat receiving means, but in a place where a heat source is not present between the slab and the slab or the like, heat storage effect can be expected.

On the other hand, the heat dissipating means may be a conventionally known one without any particular limitation, but a cooling device having a fin, a water-cooling device utilizing contact heat transfer, a heat sink utilizing boiling heat transfer, A water-cooling sheet having a refrigerant passage, and the like are exemplified as preferred forms.

Further, even if the low temperature side of the thermoelectric power generation unit is water-cooled by spray cooling or the like, the low temperature side is cooled efficiently. Particularly, when the thermoelectric power generation unit is installed below the heat source, even if spray cooling is applied, if the spray is appropriately disposed, the residual water falls down the table and the high temperature side of the thermoelectric power generation unit is cooled The low temperature side of the thermoelectric power generation unit is efficiently cooled. In the case of performing spray cooling, the side on which the spray coolant contacts and is cooled becomes the heat dissipating means.

As shown in Fig. 2, the thermoelectric module 5 used in the present invention is a thermoelectric element group in which p-type and n-type semiconductors 3, which are thermoelectric elements 3, are connected by tens to hundreds of pairs of electrodes 4 And an insulating material 6 arranged two-dimensionally and arranged on both sides thereof. In addition, the thermoelectric module 5 may be provided with a thermally conductive sheet or a shield plate on both sides or on one side. Further, the protective plate may have the heat receiving means 7 and the heat radiating means 8, respectively.

In the case where the cooling plate itself, which is the heat receiving means 7 and / or the heat dissipating means 8, is an insulating material or an insulating material is coated on the surface, it may be replaced with an insulating material. In the figure, reference numeral 1 denotes a thermoelectric power generation unit, 3 denotes a thermoelectric element, 4 denotes an electrode, 6 denotes an insulating material, 5 denotes a thermoelectric power generation module, 7 denotes a hydrothermal means and 8 denotes a heat dissipating means.

In the present invention, the thermal contact resistance between members such as the hydrothermal means and the thermoelectric module, between the heat dissipating means and the thermoelectric module, and between the insulating material and the shield plate can be reduced and the thermoelectric power generation efficiency can be further improved The above-mentioned heat conductive sheet can be provided. This heat conductive sheet is not particularly limited as long as it has a predetermined thermal conductivity and can be used under the use environment of the thermoelectric module, but a graphite sheet and the like are exemplified.

The size of the thermoelectric module according to the present invention is preferably 1 x 10 ^-2 m 2 or less. This is because deformation of the thermoelectric module can be suppressed by making the size of the module approximately the same as that of the thermoelectric module. More preferably, it is 2.5 x 10 ^-3 m 2 or less.

The size of the thermoelectric power generating unit is preferably 1 m2 or less. By setting the unit to 1 m < 2 > or less, deformation of the thermoelectric power generating modules or deformation of the thermoelectric power generating unit itself can be suppressed. More preferably, it is 2.5 x 10 < ^-1 > In the present invention, a plurality of the above-described thermoelectric generators may be used at the same time.

In the present invention, as the heat source, thermal energy due to radiation of a slab or the like in the hot rolling line is used. The hot rolling line is composed of a furnace, a roughing mill, a finishing mill, and a winding machine as shown in Fig. In the hot rolling step, a steel ingot (slab) of about 20 to 30 tons heated to about 1000 to 1200 占 폚 in the previous step or the heating furnace of the hot rolling mill is subjected to a roughing with a roughing mill, This is a rolling machine with a hot-rolled steel sheet with a thickness of about 1.2 to 25 mm. In the present invention, the steel material in the finishing mill is referred to as a hot-rolled steel band.

In the present invention, the temperature (hereinafter simply referred to as the temperature of the slab or the like) of at least one of the slab, the rough bar, and the hot-rolled steel strip (including the position where the thermoelectric power generating unit is located and the vicinity suitable for the temperature measurement) And a thermoelectric power generating unit provided along the output of the unit. As shown in Fig. 3, these thermoelectric generators are placed at any position (A to E in the figure) from the front of the roughing mill to the hot-rolled steel strip conveying route via the finishing mill, at the temperature of the slab or the like and / Accordingly, efficient generation can be achieved in response to the temperature fluctuation of the heat source in the actual operation.

Further, the thermoelectric generator (thermoelectric generator unit) of the present invention is not limited to the upper side of the slab and the like, but it can also be installed downward, and the installation location is not limited to one site but may be plural sites.

Fig. 4 shows a structural example of a casting and rolling apparatus used in the present invention. First, a casting machine 11 having a tundish 9 and a mold 10 is disposed for casting a slab, and then the casting machine 10 is mounted on a holding furnace 12, an induction furnace 13, a roughing mill 14, A finish rolling machine 15, a water cooling device 16 and a coiler 17 are disposed.

The furnace disposed behind the casting machine may be a conventional gas burner. The arrangement of the holding furnace and the induction furnace may be changed in order. Also, a heating furnace used in the case of batch rolling may be used.

A shearing machine 18 is disposed between the casting machine 11 and the holding furnace 12 and a shear 19 is disposed behind the roughing machine 14. A strip sheer a strip shearing machine 20 is disposed.

As shown in Fig. 4, such a thermoelectric power generating unit can be used in a slab cooling apparatus and a slab cutting apparatus of a slab casting machine, such as a slab cooling apparatus exit, a slab cutting apparatus exit and a slab cutting apparatus exit (Fig. 4F) (Fig. 4G), a roughing mill (Fig. 4H), a descaling device before finishing rolling (Fig. 4I), a finishing mill (Fig. 4J) (FIG. 4K) in accordance with the temperature of the slab or the like and / or the output of the thermoelectric power generating unit, it is possible to efficiently generate electric power corresponding to the temperature fluctuation of the heat source in the actual operation.

The installation of the thermoelectric generator (thermoelectric generator) in the present invention is not limited to the upper side of the slab or the like, but may be provided downwardly, and the installation location is not limited to one location but may be plural sites. The thermoelectric generator may be installed in the vicinity of the water cooling device 16. [

In order to maintain a high operation rate of the thermoelectric power generating unit, it is preferable to provide the thermoelectric power generating unit in a place where the time close to the slab or the like is long.

For example, on the conveying table (FIG. 3A) until the slab from the heating furnace reaches the roughing mill, the ingress or egress of the descaling device, which removes the oxide scale produced on the surface, (Fig. 3B), or in the vicinity of the roughing mill (Fig. 3B) for adjusting the width of the slab, or upstream of the descaling apparatus before finish rolling in which the coarse bar stays relatively long before the finish rolling (Fig. 3D), a hot rolled steel strip conveying furnace (Fig. 3E), and the like.

Further, in the case of the steel sheet manufacturing equipment line for casting and rolling, the oxide scale generated on the surface during the heating or the like is removed on the transport table (between Figs. 4G and H) until the slab from the heating furnace reaches the roughing mill (Not shown) for adjusting the width of the slab, a roughing mill near the roughing mill (FIG. 4H), or a finishing mill in which the roughing bar stays relatively long before the finishing mill (Fig. 4I), a finishing mill (Fig. 4J), a hot rolled sheet conveying route (Fig. 4K), and the like are more preferable than the descaling apparatus before rolling.

In addition, there is a place to cover the conveyance table with a cover in order to suppress the temperature drop of the bar bar during conveyance of the bar from the roughing mill to the finishing mill before the finishing mill. This cover can be opened and closed, and when the temperature is lowered, the cover is closed, and when the rolling mill is not used, the cover is opened.

The thermoelectric generator unit according to the present invention can be attached to the cover.

Here, the temperature of the furnace bar is approximately 1100 캜, but by installing the heat dissipating means in order to cool the one side and secure the temperature difference required for the power generation, the power generation efficiency of the thermoelectric unit is effectively improved.

Electricity is generated when a slab or the like serving as a heat source passes through the thermoelectric generator while keeping a small space therebetween. When there is no heat source in the vicinity of the thermoelectric generator, the conversion efficiency of the heat to the electric furnace is deteriorated. conditioner, etc., the generated electricity can be efficiently used in connection with the grid power. Further, when the solar cell is used as an independent power source, it is possible to absorb fluctuations in generated electric power by using a battery as in the case of solar power generation.

Further, a thermometer can be provided on the upstream side of the thermoelectric generator, and the distance between the thermoelectric generator unit and the slab or the like can be controlled in accordance with the measured value of the thermometer. By having such a function, thermoelectric power generation can be performed in a timely manner, even when the temperature of the slab or the like fluctuates, such as a change in the production lot, etc., The efficiency is improved.

The above-mentioned thermometer is preferably a non-contact type such as a radiation thermometer.

If the relationship between the temperature of the slab or the like and the distance at which the efficiency of the thermoelectric power generation is good is obtained in advance, the distance between the thermoelectric power generating unit and the slab, etc., .

In the present invention, the position of the thermoelectric power generating unit may be set in advance in accordance with the size or type of the slab or the like. Further, the installation position of the thermoelectric power generating unit may be set in advance from the output power results of the thermoelectric generating units for each size and type. Further, the installation location of the thermoelectric power generating unit may be set in advance according to the size and type of the thermoelectric generator unit, from the output power performance of each thermoelectric generator unit and / or the output power prediction predicted from the temperature or the like. Further, at the introduction of the facility, the distance between the thermoelectric power generating unit and the slab or the like as the heat source, or the arrangement of the thermoelectric power generating module in the thermoelectric power generating unit may be determined.

For example, when the interval of the thermoelectric power generating modules in the thermoelectric power generating unit is 60 mm, the size of the slab is 900 mm, and the temperature is 1200 ° C, the distance between the thermoelectric power generating unit and the slab is 720 mm When the slab has a width of 900 mm and a temperature of 1100 캜, controlling the distance to 530 mm enables the most efficient thermoelectric power generation.

When the temperature of the hot-rolled steel strip or the hot-rolled steel sheet is 1000 占 폚, the distance between the thermoelectric generating unit and the hot-rolled steel strip is 280 mm and the temperature of the hot- By controlling the distance to 90 mm, the most efficient thermoelectric power generation can be performed.

Further, the distance between the thermoelectric power generating unit and the slab or the like can be controlled in accordance with the output of the thermoelectric power generating unit. 5 shows the relationship between the distance from the steel material to the thermoelectric power generating unit and the power generation output ratio when the power generation output ratio at the rated output is 1 is set to 70 mm in the thermoelectric power generating unit, , 900 ° C and 950 ° C, respectively.

5, it is possible to adjust the distance between the steel material and the thermoelectric power generating unit in accordance with the output of the thermoelectric generator unit. In the present invention, a heat source is made of a slab or the like instead of the above-mentioned steel material, and the distance between the thermoelectric power generating unit and the slab or the like is adjusted so that the output of the thermoelectric power generating unit becomes large. At that time, actual output may be used, or an output value predicted from the temperature of a slab or the like may be used.

As described above, it is preferable to set the output of the thermoelectric generator unit to be a rated output. However, it is necessary to set the output in consideration of the upper limit of the heat resistance temperature of the thermoelectric generator unit so that the thermoelectric element is not broken. When the upper limit of the heat resistance is taken into consideration, the target of the power generation output ratio can be appropriately lowered, but it is preferable that the power generation output ratio is set to about 0.7.

As shown in Fig. 1, in the present invention, the thermoelectric generator unit 1 is installed close to the low temperature portion of the high temperature portion in accordance with the temperature of the heat source 2, the temperature distribution, the form factor and / It is preferable to use one thermoelectric power generating device. That is, the thermoelectric power generating unit may be provided in the vicinity of the low temperature portion with respect to the high temperature portion, depending on the temperature of at least one of the slab and the like and / or the output of the thermoelectric power generating unit.

Such a device is particularly suited for continuous lines with little temperature change. This means that the temperature distribution in the width direction of the slab or the like (the direction perpendicular to the advancing direction of the slab or the like) and / or the output of the thermoelectric generator unit are measured in advance and reflected on the distance, It is possible to optimize the power generation efficiency of the thermoelectric generator unit.

For example, in the center portion of Fig. 1, the distance from the unit to the unit is 720 mm, the distance of the end portion is controlled to 640 mm in the case of a slab or a bar bar having a temperature of 1200 캜, Further, in the case of a hot-rolled steel strip having a temperature of 1000 ° C as the heat source, thermoelectric power generation can be efficiently performed by setting the distance from the unit to 280 mm and controlling the distance of the end portion to 200 mm.

Here, the temperature distribution in the width direction is often lowered abruptly at a position about twice the plate thickness from the judgment (plate edge) of the slab or the like, and therefore, it is preferable to control the distance as described above. This is because the portion corresponding to the above position as the end portion of the slab or the like is likely to result in a small amount of power obtained for the power for moving the portion.

In the case of the embodiment as shown in Fig. 1, since the end portion of the slab or the like has a low temperature and the shape of the mounting portion of the thermoelectric power generating unit can be shaped like an ellipse, And has a characteristic of being excellent in the warming effect because the behavior of the heat flow is changed. As a result, the thermoelectric power generating device having the excellent heat energy recovery effect can be obtained.

Further, with this embodiment, when a means for controlling the distance between the thermoelectric power generating unit and the slab or the like is additionally provided, even if there is a temperature fluctuation of the heat source in the actual operation, The distance can be controlled and the thermoelectric power generation apparatus can be developed more efficiently.

6, the arrangement density of the thermoelectric power generating modules in the thermoelectric power generating unit is set to a low temperature portion in accordance with the temperature of the slab or the like and / or the output of the thermoelectric power generating unit. The high temperature portion can be densely arranged.

Such a device is also suitable for continuous lines with very little temperature change. This means that the temperature distribution in the width direction of the slab or the like (the direction perpendicular to the advancing direction of the slab or the like) and / or the output of the thermoelectric power generating unit are measured in advance and reflected in the above arrangement density, This is because the power generation efficiency of the thermoelectric generator can be optimized as compared with the case where the power generator unit is installed.

As a concrete example of changing the arrangement density, thermoelectric modules in a thermoelectric power generating unit are densely arranged in a straight upper portion (central portion) of a slab or the like, that is, in a high temperature portion, In this case, the thermoelectric generators in the thermoelectric generators in the width direction can be effectively arranged to effectively improve the power generation efficiency of the individual thermoelectric generators.

For example, in Fig. 6, when the heat source is a slab or a bar having a temperature of 1200 DEG C, the distance between the thermoelectric power generating unit and the slab or bar is 640 mm, and the arrangement of the thermoelectric module in the center of the unit is The distance between the thermoelectric generator unit and the hot-rolled steel strip was 280 mm, and the distance between the thermoelectric generator module at the center of the unit and the hot- Are arranged at intervals of 60 mm and the end portions are arranged at intervals of 63 mm, the thermoelectric power generation can be performed efficiently. Further, the output of the thermoelectric generator unit may be inspected with the interval of the thermoelectric generator module in the thermoelectric generator unit shown in FIG. 5 shown above as a parameter, and the result of the examination may be used as the thermoelectric generator module interval setting data of the present invention.

Further, in the above-described embodiment, the arrangement of the thermoelectric module in the unit may be varied in density, or the unit itself may be arranged in a compact manner.

In addition, the above-mentioned change in the arrangement density is suitable particularly in the case where there is no facility installation margin in the upward direction of the slab or the like. This embodiment can also be realized by adding a means for controlling the distance between the thermoelectric power generating unit and the slab or the like so that the distance between the thermoelectric power generating unit and the slab or the like And it is possible to further improve the efficiency.

The output of the thermoelectric generator unit according to the present invention includes a case where the position of the thermoelectric generator unit is changed in response to the temperature of the slab or the like or the density of the thermoelectric generator module is changed. When the power generation unit is installed at an initial position, there is a correspondence that, when there is an output difference between the units, the unit with a small output is moved so as to increase the output, that is, close to the slab or the like. The temperature dependence can be based not only on the temperature of the slab or the like, but also on the temperature distribution and the form factor of the slab.

As shown in Figs. 7A and 7B, the thermoelectric generator of the present invention may further include a heat reflecting material for collecting heat. In the figure, reference numeral 21 denotes a heat reflecting material. By using such a heat reflecting material, the heat collecting effect for each thermoelectric power generating unit is enhanced, and efficient thermoelectric power generation can be performed.

7 (A), it is preferable that the heat reflecting material is provided on both sides of the slab or the like (the heat source 2) (in the drawing, the traveling direction of the slab or the like is the front side in the drawing) .

The shape of the heat reflecting material in the present invention may be a plane, a curved surface, or a V-shaped or U-shaped cross-section. The heat reflecting material preferably has a flat surface to a concave surface. However, since the aberration at the focal point varies depending on the incident angle of the concave surface to the heat reflecting material, It is desirable to provide a heat reflector or a plurality of heat reflecting reflector surfaces so as to have a reflector shape (curvature).

In this embodiment, as shown in Fig. 7, since heat can be collected at an arbitrary portion of the thermoelectric generator unit, there is an advantage that the installation of the thermoelectric generator is further improved as described below.

For example, as shown in Fig. 7 (A), even when a thermoelectric generator having a thermoelectric generator unit as a conventionally known installation position is used by collecting heat in a well-balanced manner to the thermoelectric generator unit, Efficiency can be optimized. Further, as shown in Fig. 7 (B), it is possible to irradiate the thermoelectric power generating unit with the heat energy concentrated at an arbitrary point. The advantage of this embodiment is that even when the installation area of the thermoelectric generator unit is limited, when a large-area thermoelectric generator unit is not available, or when the thermoelectric generator unit can not be moved up and down, ) Of the thermoelectric power generating device can be appropriately moved to perform efficient thermoelectric power generation. Further, the heat reflecting material 21 may be provided with a driving section, and by changing an angle by an external signal, the above-mentioned heat collecting portion can be changed.

7 (A) and 7 (B), the heat reflecting material 21 may be installed on both sides such as a slab. However, depending on the installation position of the thermoelectric power generating unit, It may be installed in the lower part or the upper part.

The heat reflecting material in the present invention is not particularly limited as long as it is capable of reflecting heat energy (infrared rays). Examples of the heat reflecting material include a metal such as iron having a mirror finish and tin plating on a heat- , The procurement cost of the goods, and the like.

That is, the thermoelectric generator unit provided in accordance with the temperature of the slab or the like and / or the output of the thermoelectric generator unit according to the present invention means not only the distance of the unit itself but also the distance and angle of the thermal reflector, .

8 (A) and 8 (B) show examples of the installation of the thermoelectric generator unit according to the present invention.

The thermoelectric generator unit according to the present invention may be configured to surround the outer periphery of a slab or the like (heat source 2) as shown in Figs. 8 (A) and 8 (B).

Further, as shown in Fig. 8 (A), the thermoelectric generator according to the present invention can form at least one opening.

In the present invention, when the thermoelectric power generating unit is provided on the side surface or the lower surface of the slab or the like, the distance ds from the thermoelectric generator to the slab or the like is compared with the distance du of the upper surface thereof from the influence of convection caused by heat in the slab or the like , and ds ≤ du.

Therefore, assuming that the distances a and c exemplified in the figure correspond to the above-mentioned distance: du, distances b and d correspond to the above-described distance ds. In the drawings, the same symbol b may be a different distance, but it is important that the respective distances satisfy the relationship du and ds.

As described above, in the present invention, the distance between the heat source and the thermoelectric power generating unit can be appropriately changed even in the same apparatus.

In the case where the thermoelectric power generation unit is not provided on the entire surface, efficient heat generation can be achieved by providing a plate (insulating plate) so as not to radiate the heat of the heat source to the outside. The material of the insulating plate is not particularly limited as long as it is used as a heat insulating plate of a high temperature material such as iron or Inconel (metal alloy) or ceramics and is capable of withstanding the temperature of the installation place. It is preferable that the emissivity is small so that the radiated heat from the heat source is absorbed by the plate and is directed toward the thermoelectric power generating unit.

The present invention can include a moving means for moving the thermoelectric power unit in one piece. By this moving means, the distance between the thermoelectric power generating unit and the slab or the like can be controlled. The distance control is preferably performed using a power cylinder.

Examples of the moving means include those in which the thermoelectric power generating unit can be moved up and down integrally. In addition, even if it can move back and forth, right and left, there is no particular problem and can be used.

As a means for controlling the distance in a place where the temperature fluctuation is small, for example, a thermoelectric power generating unit or the like is fixed to an iron plate by a bolt. When the thermoelectric generator unit is moved, the bolt is loosened, It is also possible to adopt a means such as fixing with a bolt again. Further, in the present invention, a thermoelectric generator having a plurality of thermoelectric generators may be used. In the case of having a plurality of thermoelectric generators in this way, at least one thermoelectric generator may have a moving means.

Further, in an abnormal state such as at the start or end of manufacturing, in order to prevent breakage of the apparatus due to height fluctuation of the slab or the like, it is necessary to move from the power generation region to the retreat position of the non- .

In the present invention, some or all of the power converted by the thermoelectric generator may be used to adjust the distance of the thermoelectric generator or to operate the thermometer. And a power predicting means for predicting the power generated by the thermoelectric generator and the power consumed for operating the thermoelectric generator, respectively, and judging whether or not to activate the thermoelectric generator based on the generated power and the power consumption And an operation judging means for judging whether or not there is a fault.

That is, when it is predicted that the electric power for driving the thermoelectric generator unit is smaller than the generated electric power by the generated electric power prediction, the thermoelectric generator unit may not be operated. Further, when it is predicted that the heat-resistant temperature of the thermoelectric element is exceeded, it is preferable to retract the thermoelectric power generating unit until at least the heat-resistant temperature is reached.

Further, the operation judging means can judge whether or not to move from the power generating region to the non-generating region according to the output of the thermoelectric power generating unit.

The respective embodiments described above can be arbitrarily combined with each other. For example, when it is desired to obtain an optimum thermoelectric power generation efficiency only by changing the distance, in a case where it is necessary to provide an elliptical arc shape with an extremely large curvature, an embodiment using a heat reflecting material is combined, It may be loose.

Of course, it is needless to say that the present invention may be equipped with the functions of all embodiments at the same time.

As shown in Fig. 3, the thermoelectric power generating method according to the present invention is characterized in that, in a hot rolling equipment heat treatment furnace having a roughing mill in which a slab is roughly rolled into a rough bar and a finishing mill in which the hot- A thermoelectric generator installed at any position from the front of the rough rolling mill to the hot rolling belt conveying path via the finishing rolling mill and at the temperature of the slab or the like and / or the output of the thermoelectric power generating unit may be used, The present invention relates to a slab cooling apparatus for a slab casting machine, a slab cooling apparatus for slab cooling apparatus, a slab cooling apparatus for slab cooling apparatus, a slab cutting apparatus, and a rolling apparatus, In front of a holding furnace in an induction furnace, a rolling mill and a roller table, behind a holding furnace, in front of an induction furnace, The back, to the front of the rolling mill, after the rolling mill, to any position between the roller table and the roller table, line by using a thermal developing apparatus installed according to the temperature and / or the output of a thermoelectric power generation unit of the slab or the like.

Further, as shown in Figs. 1 and 6 to 8, the thermoelectric power generating method according to the present invention may be modified by changing the installation mode of the thermoelectric generator or using a thermoelectric generator equipped with a heat reflecting material. , The thermoelectric generators according to the above-described plurality of embodiments can be used as well. Particularly, the use of the operation judgment means effectively works for stable line operation.

Example

[Example 1]

2, a thermoelectric generator unit having an area of 1 m < 2 > was used. In the case of Inventive Example 1, when the hot slab temperature was 1200 DEG C, the distance between the thermoelectric generator unit and the hot slab was 720 mm , And when the hot slab temperature was 1100 DEG C, the distance was controlled to 530 mm. On the other hand, in Comparative Example 1, the same thermoelectric power generating unit as in Inventive Example 1 was used and the distance was fixed at 720 mm. The hot slab (hereinafter simply referred to as a slab) has a width of 900 mm and a thickness of 250 mm.

The thermoelectric power generation was performed for 0.5 hours at the slab temperature of 1200 ° C for 0.5 hour and at the slab temperature of 1100 ° C (in this embodiment, when the slab temperature was simply referred to as the temperature of the central portion of the steel plate). The present embodiment was carried out at the installation place A of the apparatus shown in Fig.

As a result, in Inventive Example 1, it was possible to generate 5 kW, whereas in Comparative Example 1, when the slab temperature changed, the power generation amount decreased and the power generation amount was 2 kW.

[Example 2]

In the second embodiment, the thermoelectric power generating unit having the same size as that of the first embodiment is used, and the structure shown in Fig. 1 is used. In the central part, the distance between the thermoelectric power generating unit and the slab is 720 mm, In the width direction in the width direction, hereinafter, simply referred to as the width end, means the range), the distance is controlled to 640 mm. On the other hand, in the comparative example 2, the thermoelectric power generating unit having the same size as that of the embodiment 1 was used, and the thermoelectric power generating unit was simply disposed in a planar manner.

Each of them was subjected to thermoelectric power generation at a slab temperature of 1200 DEG C for 1 hour. The present embodiment was carried out in the same place using a slab of the same size as that of the first embodiment.

As a result, in Inventive Example 2, the power generation amount of 5 kW was achieved, while in Comparative Example 2, the power generation amount was 2 kW.

[Example 3]

6, the distance between the thermoelectric power generating unit and the slab was 640 mm, and the arrangement of the thermoelectric generating modules in the thermoelectric generating unit was 6 mm, and 55 mm apart from the central portion of Fig. 6, and 60 mm apart from the width end portions. On the other hand, in the comparative example 3, the thermoelectric generating unit having the same size as that of the example 1 was used, and the thermoelectric generating unit was simply disposed in a planar manner.

Each of them was subjected to thermoelectric power generation at a slab temperature of 1200 DEG C for 1 hour. The present embodiment was carried out in the same place using a slab of the same size as that of the first embodiment.

As a result, in Inventive Example 3, a power generation amount of 5 kW was achieved, whereas in Comparative Example 3, the power generation amount was 2 kW.

[Example 4]

In the fourth embodiment, a thermoelectric power generating unit having the same size as that of the first embodiment was used to have the structure shown in Fig. 7 (A), and the thermoelectric power generating unit was provided in a planar manner to further heat-collect the heat. On the other hand, in the comparative example 4, a thermoelectric power generating unit having the same size as that of the embodiment 1 was used, and the thermoelectric power generating unit was simply placed in a plane.

Each of them was subjected to thermoelectric power generation at a slab temperature of 1200 DEG C for 1 hour. The present embodiment was carried out in the same place using a slab of the same size as that of the first embodiment.

As a result, in Inventive Example 4, the power generation amount of 5 kW was achieved, while in Comparative Example 4, the power generation amount of 2 kW was maintained.

[Example 5]

In the case of Inventive Example 5, a thermoelectric power generating unit having the same size as that of Embodiment 1 was used. When the temperature immediately above the slab was 1200 ° C, the distance between the thermoelectric power generating unit and the slab was 720 mm, ° C., the distance was set to 530 mm. Further, at the edge of the thermoelectric power generating unit, the distances were controlled to be 640 mm and 430 mm, respectively. The present embodiment was carried out in the same place using a slab of the same size as that of the first embodiment.

As a result of thermoelectric power generation at the temperature of 1,200 ° C for 0.5 hours and at the temperature of 1100 ° C for 0.5 hours, in Example 5, a power generation amount of 6 kW was realized.

[Example 6]

In the case of Inventive Example 6, the thermoelectric power generating units of the same size as in Example 1 were used and the thermoelectric power generating modules in the thermoelectric power generating units were arranged at intervals of 55 mm at the central portion, 60 mm intervals. When the slab temperature was 1200 ° C, the distance between the unit and the slab was controlled to 640 mm, and when the slab temperature was 1100 ° C, the distance was controlled to 430 mm. The present embodiment was carried out in the same place using a slab of the same size as that of the first embodiment.

As a result of thermoelectric power generation at a slab temperature of 1200 ° C for 0.5 hour and a slab temperature of 1100 ° C for 0.5 hour, in Example 6, a power generation amount of 6 kW was realized.

[Example 7]

Inventive example 7 uses a thermoelectric power generating unit of the same size as that of the first embodiment, and when the slab temperature is 1200 占 폚, the distance between the thermoelectric power generating unit and the slab is 580 mm. When the slab temperature is 1100 占 폚, Was controlled to 350 mm. The distances at the end portions of the thermoelectric power generating units were controlled to 540 mm and 300 mm, respectively. In addition, the thermoelectric power generating modules in the thermoelectric power generating units were arranged at intervals of 52 mm at the center portion and at intervals of 55 mm at the width end portions. The present embodiment was carried out in the same place using a slab of the same size as that of the first embodiment.

As a result of thermoelectric power generation at a slab temperature of 1200 ° C for 0.5 hour and a slab temperature of 1100 ° C for 0.5 hour, in Example 7, a power generation amount of 7 kW was realized.

[Example 8]

In the case of Inventive Example 8, a thermoelectric power generating unit of the same size as that of Example 1 was used. When the temperature of the furnace bar was 1000 占 폚, the distance between the thermoelectric power generating unit and the furnace bar was 280 mm, , And the distance was controlled to 90 mm. On the other hand, in Comparative Example 5, the distance was fixed at 280 mm by using a thermoelectric power generating unit of the same size as that of Example 1.

The thermoelectric power generation was carried out at a temperature of 1000 ° C for 0.5 hour and a temperature of 950 ° C for 0.5 hour at the temperature of the ZOUBAR, respectively. The present embodiment was carried out at the installation site C of the apparatus shown in Fig. The width of the bar was 900 mm and the thickness was 40 mm.

As a result, in Inventive Example 8, it was possible to generate 5 kW, whereas in Comparative Example 5, the power generation amount decreased when the crude bar temperature changed, and the power generation amount was 2 kW.

[Example 9]

In the case of Inventive Example 9, the thermoelectric generating unit having the same size as that of Example 1 was used and the structure shown in Fig. 1 was used. In the central portion, the distance between the thermoelectric power generating unit and the jar was 280 mm, (The range is approximately 80 mm in the width direction from the widthwise end face of the rough bar, hereinafter simply referred to as the steel width end means the same range), the distance is controlled to be 200 mm, The thermoelectric power generating unit of the same size as that of the first embodiment was simply used and the thermoelectric power generating unit was simply installed in a planar manner.

The thermoelectric power generation was carried out at a temperature of 1000 ° C for 1 hour at a bar-bar temperature. The present embodiment was carried out in the same place using a rough bar having the same size as that of the eighth embodiment.

As a result, in Inventive Example 9, a power generation amount of 5 kW was achieved, while in Comparative Example 6, the power generation amount was 2 kW.

[Example 10]

6, the distance between the thermoelectric generator unit and the bar bar was set to 200 mm, and the arrangement of the thermoelectric generator modules in the thermoelectric generator unit was set to be 200 mm. In the thermoelectric generator module of Example 1, , 58 mm apart from the central portion of Fig. 6, and 60 mm apart from the end of the steel material width. On the other hand, in Comparative Example 7, a thermoelectric power generating unit having the same size as that of Embodiment 1 was used, and a thermoelectric power generating unit was simply installed in a planar manner using the thermoelectric generating unit.

The thermoelectric power generation was carried out at a temperature of 1000 ° C for 1 hour at a bar-bar temperature. The present embodiment was carried out in the same place using a rough bar having the same size as that of the eighth embodiment.

As a result, in Inventive Example 10, the power generation amount of 5 kW was achieved, while in Comparative Example 7, the power generation amount of 2 kW was maintained.

[Example 11]

In the eleventh embodiment, a thermoelectric power generating unit of the same size as that of the first embodiment was used to have the configuration shown in Fig. 7 (A), and the thermoelectric power generating unit was provided in a planar manner and a heat reflecting material for further heat gathering was provided. On the other hand, in the comparative example 8, the thermoelectric generating unit having the same size as that of the embodiment 1 was used, and the thermoelectric generating unit was simply placed in a plane.

The thermoelectric power generation was carried out at a temperature of 1000 ° C for 1 hour at a bar-bar temperature. The present embodiment was carried out in the same place using a rough bar having the same size as that of the eighth embodiment.

As a result, in Inventive Example 11, a power generation amount of 5 kW was achieved, while in Comparative Example 8, the power generation amount was 2 kW.

[Example 12]

In the case of Inventive Example 12, a thermoelectric power generating unit having the same size as that of Example 1 was used. When the temperature immediately above the bar was 1000 ° C, the distance between the thermoelectric power generating unit and the bar was 280 mm, In the case of 950 占 폚, the distance was controlled to 90 mm. Further, at the edges of the thermoelectric power generating unit, the distances were controlled to 200 mm and 40 mm, respectively. The present embodiment was carried out in the same place using a rough bar having the same size as that of the eighth embodiment.

As a result of conducting thermoelectric power generation at a temperature of 1000 ° C for 0.5 hour and a temperature of 950 ° C for 0.5 hour at the temperature of the Zorbax, in Example 12, a power generation amount of 6 kW was realized.

[Example 13]

6, the thermoelectric modules in the thermoelectric generators were disposed at intervals of 58 mm in the central portion, and in addition, the thermoelectric generators The distance between the unit and the bar bar was controlled to be 200 mm when the bar bar temperature was 1000 DEG C and the distance was set to 40 mm when the bar bar temperature was 950 DEG C . The present embodiment was carried out in the same place using a rough bar having the same size as that of the eighth embodiment.

As a result of conducting thermoelectric power generation at a temperature of 1000 ° C for 0.5 hour and a temperature of 950 ° C for 0.5 hour at the temperature of the Zorbacher, in Example 13, a power generation amount of 6 kW was realized.

[Example 14]

In the case of Inventive Example 14, the thermoelectric power generating unit having the same size as that of Example 1 was used. When the temperature of the bar bar was 1000 占 폚, the distance between the thermoelectric power generating unit and the bar bar was 100 mm, , And the distance was controlled to 90 mm. The distances at the ends of the thermoelectric power generating units were controlled to be 90 mm and 80 mm, respectively. Further, thermoelectric power generating modules in the thermoelectric power generating units were arranged at intervals of 55 mm at the central portion and 58 mm apart at the steel material end portions when the temperature of the bar bar was 1000 占 폚. When the temperature of the bar bar was 1050 占 폚, The center portion was arranged at intervals of 50 mm, and the steel width end portions were arranged at intervals of 52 mm. The present example was carried out in the same place using a rough bar having the same size as that of the eighth embodiment.

As a result of conducting thermoelectric power generation at a temperature of 1000 ° C for 0.5 hour and a temperature of 10 ° C for 0.5 hour at the temperature of the ZOUBAR, in Example 14, 7 kW of electric power was generated.

[Example 15]

2, when a thermoelectric generator unit having an area of 1 m 2 is used and the temperature of the hot slab (hereinafter simply referred to as a slab) is 1200 ° C. as the description 15, the thermoelectric generator unit The distance to the slab was 720 mm, and the distance was 530 mm when the slab temperature was 1100 ° C. On the other hand, in Comparative Example 9, the same thermoelectric power generating unit as in Inventive Example 15 was used and the distance was fixed at 720 mm. The slab was 900 mm wide and 250 mm thick.

The thermoelectric power generation was performed for 0.5 hour at the slab temperature of 1200 ° C for 0.5 hour and at the slab temperature of 1100 ° C (in the present embodiment, simply referred to as the temperature of the central portion of the slab if the slab temperature was simply referred to). The present embodiment was carried out at the installation site F of the apparatus shown in Fig.

As a result, in Inventive Example 15, the power generation of 5 kW was possible, whereas in Comparative Example 9, the power generation amount decreased when the slab temperature changed, and the power generation amount of 2 kW was obtained.

[Example 16]

In the 16th embodiment, the thermoelectric power generating unit of the same size as that of the 15th embodiment is used and the structure shown in Fig. 1 is used. In the central part, the distance between the thermoelectric power generating unit and the slab is 720 mm, In the width direction from the widthwise end to the widthwise direction, hereinafter simply referred to as the width end, means the range), the distance is controlled to 640 mm. On the other hand, in the comparative example 10, a thermoelectric power generating unit having the same size as that of the fifteenth embodiment was used, and the thermoelectric power generating unit was simply placed in a plane.

Each of them was subjected to thermoelectric power generation at a slab temperature of 1200 DEG C for 1 hour. The present embodiment was carried out at the same place using the slabs of the same size as those of the fifteenth embodiment.

As a result, in Inventive Example 16, a power generation amount of 5 kW was achieved, whereas in Comparative Example 10, the power generation amount was 2 kW.

[Example 17]

In the seventeenth preferred embodiment, the thermoelectric generating units of the same size as those of the first preferred embodiment are used, and the thermoelectric generating modules in the thermoelectric generating units are arranged at intervals of 55 mm in the central portion of FIG. 6, And 60 mm intervals at the end of the width. On the other hand, in the comparative example 11, the thermoelectric generating unit having the same size as that of the fifteenth embodiment was used, and the thermoelectric generating unit was simply disposed in a planar manner.

Each of them was subjected to thermoelectric power generation at a slab temperature of 1200 DEG C for 1 hour. The present embodiment was carried out at the same place using the slabs of the same size as those of the fifteenth embodiment.

As a result, in Inventive Example 17, the power generation amount of 5 kW was achieved, whereas in Comparative Example 11, the power generation amount of 2 kW was maintained.

[Example 18]

In the 18th embodiment, the thermoelectric generating unit of the same size as that of the 15th embodiment was used to have the structure shown in Fig. 7 (A), and the thermoelectric generating unit was provided in a planar manner and a heat reflecting material for further heat gathering was provided. On the other hand, in the comparative example 12, the thermoelectric power generating unit having the same size as that of the fifteenth embodiment was used, and the thermoelectric power generating unit was simply disposed in a plane.

Each of them was subjected to thermoelectric power generation at a slab temperature of 1200 DEG C for 1 hour. The present embodiment was carried out at the same place using the slabs of the same size as those of the fifteenth embodiment.

As a result, in Inventive Example 18, the power generation amount of 5 kW was achieved, while in Comparative Example 12, the power generation amount of 2 kW was maintained.

[Example 19]

Inventive Example 19 uses a thermoelectric power generating unit of the same size as that of Embodiment 15 and assumes that the distance between the thermoelectric power generating unit and the slab is 720 mm when the temperature immediately above the slab is 1200 ° C and the temperature is 1100 ° C., the distance was set to 530 mm. Further, at the edge of the thermoelectric power generating unit, the distances were controlled to be 640 mm and 430 mm, respectively. The present embodiment was carried out at the same place using the slab of the same size as that of the fifteenth embodiment.

As a result of the thermoelectric power generation at the temperature of 1,200 ° C for 0.5 hours and the temperature of 1100 ° C for 0.5 hours, in Example 19, 6 kW of power generation was realized.

[Example 20]

In the case of Inventive Example 20, the thermoelectric generating units of the same size as in Example 15 were used and the thermoelectric generating modules in the thermoelectric generating units were arranged at intervals of 55 mm at the central portion, 60 mm intervals. When the slab temperature was 1200 ° C, the distance between the unit and the slab was controlled to 640 mm, and when the slab temperature was 1100 ° C, the distance was controlled to 430 mm. The present embodiment was carried out in the same place using the slabs of the same size as those of the fifteenth embodiment.

As a result of thermoelectric power generation at a slab temperature of 1200 ° C for 0.5 hour and a slab temperature of 1100 ° C for 0.5 hour, in Inventive Example 20, a power generation amount of 6 kW was realized.

[Example 21]

In the case of Inventive Example 21, a thermoelectric power generating unit having the same size as that of Example 15 is used. When the slab temperature is 1200 ° C, the distance between the thermoelectric power generating unit and the slab is 580 mm. When the slab temperature is 1100 ° C, Was controlled to 350 mm. The distances at the end portions of the thermoelectric power generating units were controlled to 540 mm and 300 mm, respectively. In addition, the thermoelectric power generating modules in the thermoelectric power generating units were arranged at intervals of 52 mm at the center portion and at intervals of 55 mm at the width end portions. The present embodiment was carried out at the same place using the slabs of the same size as those of the fifteenth embodiment.

As a result of thermoelectric power generation at a slab temperature of 1200 ° C for 0.5 hour and a slab temperature of 1100 ° C for 0.5 hour, in Inventive Example 21, a power generation amount of 7 kW was realized.

[Example 22]

In the case of Inventive Example 22, the thermoelectric generating unit having the same size as that of Example 15 was used. When the temperature of the bar bar was 1000 占 폚, the distance between the thermoelectric power generating unit and the bar bar was 280 mm, , And the distance was controlled to 90 mm. On the other hand, in Comparative Example 13, the distance was fixed at 280 mm by using a thermoelectric generator unit of the same size as that of Example 15.

The thermoelectric power generation was carried out at a temperature of 1000 ° C for 0.5 hour and a temperature of 950 ° C for 0.5 hour at the temperature of the ZOUBAR, respectively. The present embodiment was carried out at the installation place H of the apparatus shown in Fig. The width of the bar was 900 mm and the thickness was 40 mm.

As a result, in Inventive Example 22, 5 kW of power could be generated, whereas in Comparative Example 13, the power generation amount decreased and the power generation amount of 2 kW was generated when the temperature of the coarse bar was changed.

[Example 23]

In the inventive example 23, the thermoelectric power generating unit of the same size as that of the fifteenth embodiment is used and the structure shown in Fig. 1 is used. In the central part, the distance between the thermoelectric power generating unit and the roughing bar is 280 mm, (The range is approximately 80 mm in the width direction from the width end face of the rough bar. Hereinafter, when the steel width end portion is simply referred to as the steel width end portion, the same range) means that the distance is controlled to 200 mm, A thermoelectric power generating unit of the same size as that of the fifteenth embodiment was used, and the thermoelectric power generating unit was simply installed in a planar manner.

The thermoelectric power generation was carried out at a temperature of 1000 ° C for 1 hour at a bar-bar temperature. The present embodiment was carried out in the same place using a rough bar having the same size as that of the twenty-second embodiment.

As a result, in Inventive Example 23, the power generation amount of 5 kW was achieved, whereas in Comparative Example 14, the amount of power generation was 2 kW.

[Example 24]

6, the arrangement of the thermoelectric generators in the thermoelectric generators was 58 mm at the center of Fig. 6, and the thermoelectric generators Except for the width of the steel material at the width of 60 mm. On the other hand, in the comparative example 15, the thermoelectric power generating unit having the same size as that of the fifteenth embodiment was used, and the thermoelectric power generating unit was simply installed in a planar manner.

The thermoelectric power generation was carried out at a temperature of 1000 ° C for 1 hour at a bar-bar temperature. The present embodiment was carried out in the same place using a rough bar having the same size as that of the twenty-second embodiment.

As a result, in Inventive Example 24, the power generation amount of 5 kW was achieved, while in Comparative Example 15, the power generation amount of 2 kW was maintained.

[Example 25]

In the case of Inventive Example 25, a thermoelectric power generating unit having the same size as that of the fifteenth embodiment was used to have the structure shown in Fig. 7 (A), and the thermoelectric power generating unit was provided in a planar manner and further heat reflecting material for collecting heat was provided. On the other hand, in the comparative example 16, the thermoelectric power generation unit having the same size as that of the fifteenth embodiment was used, and the thermoelectric power generation unit was simply installed in a planar manner.

The thermoelectric power generation was carried out at a temperature of 1000 ° C for 1 hour at a bar-bar temperature. The present embodiment was carried out in the same place using a rough bar having the same size as that of the twenty-second embodiment.

As a result, in the case of Inventive example 25, a power generation amount of 5 kW was achieved, whereas in the comparison example 16, the power generation amount was 2 kW.

[Example 26]

In the case of Example 26, the thermoelectric generating unit having the same size as that of Example 15 was used. When the temperature immediately above the bar was 1000 ° C, the distance between the thermoelectric generator and the bar was 280 mm, In the case of 950 占 폚, the distance was controlled to 90 mm. Further, at the edges of the thermoelectric power generating unit, the distances were controlled to 200 mm and 40 mm, respectively. The present embodiment was carried out in the same place using a rough bar having the same size as that of the twenty-second embodiment.

The thermoelectric power generation was carried out at a temperature of 1000 bar and a temperature of 950 deg. C for 0.5 hour and 0.5 bar, respectively. As a result, in Example 26, a power generation amount of 6 kW was realized.

[Example 27]

In the 27th embodiment, the thermoelectric generators of the same size as those of the fifteenth embodiment are used and the thermoelectric generators in the thermoelectric generators are arranged at intervals of 58 mm in the central portion, The distance between the unit and the bar bar was controlled to be 200 mm when the bar bar temperature was 1000 DEG C and the distance was set to 40 mm when the bar bar temperature was 950 DEG C . The present embodiment was carried out in the same place using a rough bar having the same size as that of the twenty-second embodiment.

As a result of conducting the thermoelectric power generation at a temperature of 1000 ° C for 0.5 hour and a temperature of 950 ° C for 0.5 hour at the temperature of the ZOUBAR, in Example 27, 6 kW of electric power was generated.

[Example 28]

In the case of Example 28, the thermoelectric power generating unit having the same size as in Example 15 was used. When the temperature of the bar bar was 1000 占 폚, the distance between the thermoelectric power generating unit and the bar bar was 100 mm, , And the distance was controlled to 90 mm. The distances at the ends of the thermoelectric power generating units were controlled to be 90 mm and 80 mm, respectively. Further, thermoelectric power generating modules in the thermoelectric power generating units were arranged at intervals of 55 mm at the central portion and 58 mm apart at the steel material end portions when the temperature of the bar bar was 1000 占 폚. When the temperature of the bar bar was 1050 占 폚, The center portion was arranged at intervals of 50 mm, and the steel width end portions were arranged at intervals of 52 mm. The present embodiment was carried out in the same place using a rough bar having the same size as that of the twenty-second embodiment.

As a result of conducting thermoelectric power generation at a temperature of 1000 ° C for 0.5 hour and a temperature of 10 ° C for 0.5 hour at the temperature of the ZOUBAR, in Example 28, 7 kW of electric power was generated.

From the results of the above described inventive and comparative examples, it was confirmed that the hot rolling facility heat using the present invention, and the heat of the steel plate making facility for casting and rolling are excellent. In the above embodiments, the installation location of the thermoelectric generator unit is changed in accordance with the temperature of the slab and the rough bar, and the temperature in the vicinity of the installation site. However, the temperature of the hot-rolled steel strip and the slab on the slab cooling device exit side of the slab casting machine, It has been confirmed that the same result can be obtained as long as the present invention is applied, even if the installation place and the installation form are changed according to the temperature of another heat source such as a plate or the output of the thermoelectric power generating unit.

According to the present invention, since heat generated from a slab or the like can be effectively converted into electric power, it contributes to energy saving in a manufacturing factory.

1: Thermoelectric generator unit
2: heat source
3: Thermoelectric element
4: Electrode
5: Thermoelectric module
6: Insulation material
7: heat receiving means
8: Heat dissipation means
9: Tundish
10: Mold
11: casting machine
12: Holding furnace
13: induction furnace
14: rougher
15: finisher
16: Water cooling device
17: Coiler
18, 19: shearing machine
20: strip shearing machine
21: Heat reflector

Claims (23)

In a facility line of a steelworks having a moving heat source,
Wherein said manufacturing facility array comprises a thermoelectric generator having a thermoelectric power generation unit and wherein said thermoelectric generator unit faces said heat source and further comprises means for controlling the temperature of at least one of said heat sources and / And the heat of the manufacturing equipment installed in accordance with the output of the thermoelectric power generating unit. The method according to claim 1,
Wherein the manufacturing equipment row is a hot rolling equipment column comprising a roughing mill in which rough slabs are roughly rolled and a rough bar in a heated slab, and a finishing mill in which the hot rolling mill is finely rolled into a hot- ,
The thermoelectric power generating unit is disposed at a position from the front of the rough rolling mill to the hot rolled steel strip conveying route and at a position corresponding to the slab, the rough bar, and the hot rolled steel strip, and also the temperature of at least one of the slab, And the heat of the manufacturing facility installed along with the output of the thermoelectric generator unit. 3. The method of claim 2,
Wherein the thermoelectric power generating unit is installed close to the high temperature portion at a low temperature portion in accordance with the temperature of at least one of the slab, the rough bar and the hot rolled steel strip and / or the output of the thermoelectric power generating unit. The method according to claim 2 or 3,
Wherein the thermoelectric module in the thermoelectric generator unit is densely arranged at a high temperature portion with respect to the low temperature portion in accordance with the temperature of at least one of the slab, the bar and the hot-rolled coil and / or the output of the thermoelectric generator. 5. The method according to any one of claims 2 to 4,
Wherein the thermoelectric generator is provided with a thermoelectric power generating unit for heating the slab, the rough bar and the hot rolled steel strip in accordance with the temperature and / or the output obtained by measuring the temperature of at least one of the slab, A manufacturing facility column having moving means for controlling a distance to at least one of the steel strips. 6. The method according to any one of claims 2 to 5,
Wherein the thermoelectric generator further comprises a thermal reflector. 7. The method according to any one of claims 2 to 6,
Wherein the thermoelectric generator is shaped to surround an outer peripheral portion of at least one of a slab, a bar, and a hot-rolled steel strip. 8. The method according to any one of claims 2 to 7,
Wherein the thermoelectric generator is provided with at least one opening. 9. The method according to any one of claims 2 to 8,
Wherein the moving means performs the integral movement of the thermoelectric generator unit. 10. The method according to any one of claims 2 to 9,
Wherein the thermoelectric generator further comprises a movement judging means for judging, based on the output of the thermoelectric generator unit, the operation ratio non-operation of the thermoelectric generator unit. A method of thermoelectric generation in which at least one heat of a slab, a bar, and a hot-rolled steel strip is heat-received (heat-received) by using the manufacturing facility heat as set forth in any one of claims 2 to 10. 12. The method of claim 11,
And controlling the operation of the thermoelectric generator unit by using the operation judging means of the manufacturing equipment column. The method according to claim 1,
Wherein the manufacturing facility heat is a steel plate manufacturing facility column for casting and rolling including a slab casting machine and a rolling line,
The thermoelectric power generating unit is characterized in that the slab cooling apparatus and the slab cutting apparatus of the slab casting machine are arranged such that the slab cooling apparatus output side, the slab cutting apparatus output side, and the slab cutting apparatus output side, and the rolling line holiding furnace, In the induction furnace, in front of the retaining furnace in the rolling mill and roller table, behind the retaining furnace, in front of the induction furnace, behind the induction furnace, in front of the rolling mill, behind the rolling mill, And at least one of the slabs and / or the hot-rolled sheet, and / or at least one of the slab and the hot-rolled sheet and / or the output of the thermoelectric generator unit. 14. The method of claim 13,
Wherein the thermoelectric power generating unit is installed close to the high temperature portion at a low temperature portion in accordance with the temperature of at least one of the slab and the hot rolled plate and / or the output of the thermoelectric power generating unit. The method according to claim 13 or 14,
Wherein the thermoelectric module in the thermoelectric generator unit is densely arranged at a high temperature portion with respect to the low temperature portion in accordance with the temperature of at least one of the slab and the hot rolled plate and / 16. The method according to any one of claims 13 to 15,
The thermoelectric generator is characterized in that the thermoelectric power generating unit is arranged so that the temperature of at least one of the slab and the hot-rolled sheet and / or the output of the thermoelectric generator unit, Manufacturing facility columns having moving means for controlling the distance. 17. The method according to any one of claims 13 to 16,
Wherein the thermoelectric generator further comprises a thermal reflector. 18. The method according to any one of claims 13 to 17,
Wherein the thermoelectric generator is shaped to surround at least one of the slab and the hot-rolled plate. 19. The method according to any one of claims 13 to 18,
Wherein the thermoelectric generator is provided with at least one opening. 20. The method according to any one of claims 13 to 19,
Wherein the moving means performs the integral movement of the thermoelectric generator unit. 21. The method according to any one of claims 13 to 20,
Wherein the thermoelectric generator further comprises a movement judging means for judging, based on the output of the thermoelectric generator, the operation ratio of the thermoelectric generator unit. A method of thermoelectric generation in which at least one heat of a slab and a hot-rolled sheet is subjected to heat generation by using the manufacturing facility heat as set forth in any one of claims 13 to 21. 23. The method of claim 22,
And controlling the operation of the thermoelectric generator unit by using the operation judging means of the manufacturing equipment column.

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