CN221002884U - Waste heat power generation system based on alumina micropowder - Google Patents
Waste heat power generation system based on alumina micropowder Download PDFInfo
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- CN221002884U CN221002884U CN202322441016.3U CN202322441016U CN221002884U CN 221002884 U CN221002884 U CN 221002884U CN 202322441016 U CN202322441016 U CN 202322441016U CN 221002884 U CN221002884 U CN 221002884U
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- heat exchange
- powder
- alumina micropowder
- conversion unit
- alumina
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000010248 power generation Methods 0.000 title claims abstract description 19
- 239000002918 waste heat Substances 0.000 title claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 67
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 238000001816 cooling Methods 0.000 claims description 40
- 239000004065 semiconductor Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000006872 improvement Effects 0.000 description 9
- 239000000110 cooling liquid Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910002899 Bi2Te3 Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model discloses a waste heat power generation system based on alumina micropowder, which comprises a circulation device, a heat exchange device and a temperature difference conversion unit, wherein the circulation device is obliquely arranged, the heat exchange device is fixedly arranged in the circulation device, the heat exchange device comprises a heat exchange pipeline, the temperature difference conversion unit is tightly attached to the outer wall of the heat exchange pipeline, and the alumina micropowder flows through the temperature difference conversion unit. The waste heat power generation system based on the alumina micro powder has the advantage of generating power by utilizing the heat of the alumina micro powder.
Description
Technical Field
The utility model relates to the technical field of waste heat power generation systems, in particular to a waste heat power generation system based on alumina micropowder.
Background
In the production process of electrolytic aluminum, high-temperature roasting and drying are needed to be carried out on the alumina powder, and the alumina micropowder obtained after drying is required to be transported to an electrolytic aluminum tank to be used as the raw material for producing electrolytic aluminum. The temperature of the baked and dried alumina powder can reach 300 ℃, and the alumina micropowder can be transported only by reducing the temperature of the alumina micropowder to 80 ℃ based on the transportation temperature requirement.
In the current electrolytic aluminum process production process, a circular cooling water pipe is generally inserted into high-temperature alumina micropowder, cooling water at about 25 ℃ is introduced into the pipe side of the water pipe, and the flowing alumina micropowder is arranged outside the pipe. Because the alumina micropowder particles are very fine and smooth, the fluidity is good. Therefore, the alumina micropowder flowing outside the tube wall and the water fluid flowing in the tube form a temperature difference, thereby achieving the aim of cooling the alumina micropowder. The mode of cooling tens of millions of tons of alumina micropowder by water cooling causes a great deal of latent heat of the alumina micropowder to be dissipated by the mode of water cooling, so that the latent heat is not recovered and utilized, and heat is wasted.
Therefore, the waste heat power generation system based on the alumina micropowder is provided for overcoming the defects of the prior art.
Disclosure of utility model
The utility model provides a waste heat power generation system based on alumina micropowder, and aims to solve the problem that the heat of the alumina micropowder cannot be utilized.
The utility model adopts the following technical scheme:
The utility model provides a waste heat power generation system based on aluminium oxide miropowder, its characterized in that includes the circulation device that the slope set up, sets firmly the inside heat transfer device of circulation device and difference in temperature conversion unit, heat transfer device includes the heat transfer pipeline, the difference in temperature conversion unit is hugged closely the outer wall of heat transfer pipeline, aluminium oxide miropowder flows through the difference in temperature conversion unit.
Further as an improvement of the technical scheme of the utility model, the circulating device comprises a powder inlet, a circulating cavity and a powder outlet, wherein the circulating cavity is communicated with the powder inlet and the powder outlet, and the height of the powder inlet is higher than that of the powder outlet.
Further as an improvement of the technical scheme of the utility model, the heat exchange device is also provided with a water inlet and a water outlet, the water inlet is communicated with the water outlet through the heat exchange pipeline, the water outlet is positioned at one end close to the powder inlet, and the water inlet is positioned at one end close to the powder outlet.
Further as an improvement of the technical scheme of the utility model, the heat exchange pipeline is bent and arranged, the heat exchange pipeline comprises a plurality of first cooling pipes which are communicated with each other, the plurality of first cooling pipes are arranged side by side, and the first cooling pipes are connected end to end.
Further as an improvement of the technical scheme of the utility model, an included angle exists between the length direction of the first cooling pipe and the flow direction of the micro powder.
Further as an improvement of the technical scheme of the utility model, the heat exchange pipeline is bent into an S shape or a spiral shape or a pi shape.
Further as an improvement of the technical scheme of the utility model, the heat exchange pipeline is arranged in a straight pipe manner, the heat exchange pipeline comprises a plurality of second cooling pipes, the second cooling pipes are arranged side by side, and the second cooling pipes are communicated with the water inlet and the water outlet;
The direction of water flow in the second cooling pipe is opposite to the direction of the micro powder.
Further as an improvement of the technical scheme of the utility model, the inclination angle of the circulating device and the basal plane is 15 degrees to 90 degrees.
Further as an improvement of the technical scheme of the utility model, the temperature difference conversion unit is a semiconductor material temperature difference conversion unit.
Further as an improvement of the technical scheme of the utility model, the temperature difference conversion unit comprises a cold end contacted with the heat exchange pipeline and a hot end contacted with the micro powder is arranged at one end away from the heat exchange pipeline;
The hot end is provided with a protective sleeve.
Compared with the prior art, the utility model has the beneficial effects that:
According to the waste heat power generation system based on the alumina micropowder, the heat exchange device and the temperature difference conversion unit are fixedly arranged in the circulation device, the heat exchange device comprises a heat exchange pipeline, the temperature difference conversion unit is tightly attached to the outer wall of the heat exchange pipeline, and the alumina micropowder flows through the temperature difference conversion unit. When cooling the alumina micropowder, putting the alumina micropowder with cooling into the circulation device, the alumina micropowder flows under the action of gravity, and in the flowing process, the alumina micropowder contacts with the temperature difference conversion unit clung to the surface of the heat exchange pipeline, and meanwhile, the cooling liquid continuously flows into the heat exchange pipeline to carry out heat exchange, so that temperature difference is formed at two ends of the temperature difference conversion unit, the purpose of cooling the alumina micropowder is achieved, and the heat emitted by the alumina micropowder can be used for generating electricity. The waste heat power generation system based on the alumina micro powder has the characteristic of generating power by utilizing the heat of the alumina micro powder.
Drawings
The technology of the present utility model will be described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic perspective view of example 1 of a cogeneration system based on alumina micropowder;
FIG. 2 is a schematic diagram of the structure of example 2 of a cogeneration system based on alumina micropowder;
FIG. 3 is a top view of a waste heat power generation system based on alumina micropowder;
Fig. 4 is a schematic diagram of the structure of example 3 in a waste heat power generation system based on alumina fine powder.
Reference numerals:
1. A flow-through device; 11. a powder inlet; 12. a flow-through chamber; 13. a powder outlet;
2. A heat exchange device; 21. a heat exchange pipeline; 211. a first cooling tube; 212. a second cooling tube; 22. a water inlet; 23. a water outlet;
3. and a temperature difference conversion unit.
Detailed Description
The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
A waste heat power generation system based on alumina micropowder, referring to fig. 1 to 3, comprises a circulation device 1, a heat exchange device 2 and a temperature difference conversion unit 3;
The heat exchange device comprises a circulation device 1, a heat exchange device 2 and a temperature difference conversion unit 3, wherein the circulation device 1 is obliquely arranged, the heat exchange device 2 and the temperature difference conversion unit 3 are fixedly arranged inside the circulation device 1, the heat exchange device 2 comprises a heat exchange pipeline 21, the temperature difference conversion unit 3 is tightly attached to the outer wall of the heat exchange pipeline 21, and alumina micropowder flows through the temperature difference conversion unit 3. The temperature difference conversion unit 3 can be fixed by heat conducting glue or machinery, preferably, the temperature difference conversion unit 3 is fixed on the outer wall of the heat exchange pipeline 21 by the heat conducting glue, and the temperature difference conversion unit 3 comprises a cold end contacted with the heat exchange pipeline 21 and a hot end arranged at one end away from the heat exchange pipeline 21 and contacted with micro powder; the hot end can also be provided with a protective sleeve. The cold end and the hot end form a larger temperature difference, the hot end and the cold end convert heat into electric power after forming a temperature difference, and the generated electric power is stored or used, so that the purpose of utilizing waste heat is achieved, and the cold end and the hot end are semiconductor devices for generating power by the temperature difference formed by semiconductor materials N-Bi2Te3, P-Bi2Te3 and ceramic plates.
The heat exchange device 2 and the temperature difference conversion unit 3 are fixedly arranged in the circulation device 1, the heat exchange device 2 comprises a heat exchange pipeline 21, the temperature difference conversion unit 3 is tightly attached to the outer wall of the heat exchange pipeline 21, and alumina micropowder flows through the temperature difference conversion unit 3. When the alumina micropowder is cooled, the cooled alumina micropowder is placed into the circulation device 1, the alumina micropowder flows under the action of gravity, in the flowing process, the alumina micropowder is contacted with the temperature difference conversion unit 3 clung to the surface of the heat exchange pipeline 21, and meanwhile, cooling liquid continuously flows into the heat exchange pipeline 21 to perform heat exchange, so that temperature difference is formed at two ends of the temperature difference conversion unit 3, the purpose of cooling the alumina micropowder is achieved, and heat emitted by the alumina micropowder can be used for generating electricity. The waste heat power generation system based on the alumina micro powder has the characteristic of generating power by utilizing the heat of the alumina micro powder. The electric quantity generated by the waste heat power generation system can be used for producing electrolytic aluminum, so that the purposes of reducing cost and enhancing efficiency of a power plant are achieved.
In one embodiment, the flow-through device 1 comprises a powder inlet 11, a flow-through cavity 12 and a powder outlet 13, wherein the flow-through cavity is communicated with the powder inlet 11 and the powder outlet 13, and the height of the powder inlet 11 is higher than the height of the powder outlet 13. The inclination angle of the flow-through device 1 with the base surface is 15-90 deg.. The size and the inclined angle of the powder inlet 11 and the powder outlet 13 can be changed, when the temperature of the alumina micro powder is higher, the temperature difference of the alumina micro powder needs to be reduced is larger, at the moment, the size of the powder inlet 11 and the powder outlet 13 can be reduced or/and the angle of the circulating device 1 can be reduced, so that the flow velocity of the alumina micro powder in the circulating cavity is reduced, and the heat exchange time of the alumina micro powder in the circulating cavity is prolonged; similarly, when the temperature of the alumina micro powder is lower, the temperature difference required to be reduced by the alumina micro powder is smaller, and at this time, the sizes of the powder inlet 11 and the powder outlet 13 can be increased or/and the angle of the circulating device 1 can be increased, so that the flow velocity of the alumina micro powder in the circulating cavity is increased, and the heat exchange time of the alumina micro powder in the circulating cavity is shortened.
In one embodiment, the heat exchange device 2 is further provided with a water inlet 22 and a water outlet 23, the water inlet 22 is communicated with the water outlet 23 to form a heat exchange pipeline 21, the water outlet 23 is positioned at one end close to the powder inlet 11, and the water inlet 22 is positioned at one end close to the powder outlet 13. The water inlet 22 is positioned at a lower height, the water outlet 23 is positioned at a higher height, and the overall flow direction of water flow is opposite to the overall flow direction of the alumina micropowder, so that the cooling liquid can fully absorb the heat of the alumina. The cooling liquid may be clear water, cooling water or cooling oil, preferably the cooling liquid is clear water.
In embodiment 1, referring to fig. 1, the heat exchange tube 21 is bent, the heat exchange tube 21 includes a plurality of first cooling tubes 211 that are mutually communicated, the plurality of first cooling tubes 211 are arranged side by side, the first cooling tubes 211 are connected end to end, the length of the heat exchange tube 21 is longer, and the whole heat exchange tube 21 can be fully paved with the circulation cavity. The length direction of the first cooling pipe 211 forms an angle with the flow direction of the fine powder, and preferably the angle is 90 °. The heat exchange tube 21 is bent into an S shape or a spiral shape or a pi shape, and preferably, the heat exchange tube 21 is bent into an S shape, and the embodiment enhances the heat exchange effect by the turbulence of the cooling tube on the alumina micropowder.
In embodiment 2, referring to fig. 2, similar to embodiment 1, it is preferable that the difference is that the length direction of the first cooling pipe 211 is parallel to the flow direction of the fine powder, the powder inlet 11 and the water inlet 22 are located on the same side, and the powder outlet 13 and the water outlet 23 are located on the same side, which can prevent some dead zones of the fine alumina powder in the circulation chamber and effectively reduce the retention of the fine alumina powder in the circulation chamber.
In embodiment 3, referring to fig. 4, a straight tube of a heat exchange tube 21 is provided, the heat exchange tube 21 includes a plurality of second cooling tubes 212, the plurality of second cooling tubes 212 are arranged side by side, and the second cooling tubes 212 which are independently arranged are adopted, and the plurality of second cooling tubes 212 are communicated with a water inlet 22 and a water outlet 23; the direction of the water flow in the second cooling pipe 212 is opposite to the direction of the micro powder, and the direction of the water flow is parallel and opposite to the direction of the micro powder. During the heat exchange, the cooling liquid in the heat exchange pipeline 21 flows from one end close to the powder outlet 13 to one end close to the powder inlet 11. Like example 2, example 3 was also effective in reducing the residence of alumina fine powder in the flow chamber. Embodiment 1 and 2 the first cooling pipes 211 are arranged in a single pipe, and the plurality of second cooling pipes 212 are arranged side by side in embodiment 3 and are all independently arranged, and have independent water inlets 22 and water outlets 23. In this embodiment, the temperature difference between the inlet and the outlet of the cooling pipe 212 is larger, the temperature difference of each cooling pipe is similar, and the power generation efficiency is higher. More water flow is required relative to embodiments 1 and 2.
In one embodiment, the alumina micropowder is in a very fine, lubricious particulate form with good flowability.
Other contents of the waste heat power generation system based on alumina micropowder of the utility model refer to the prior art, and are not repeated here.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
The above is only a preferred embodiment of the present utility model, and is not limited in any way, so any modification, equivalent variation and modification made to the above embodiment according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (10)
1. The utility model provides a waste heat power generation system based on aluminium oxide miropowder, its characterized in that includes the circulation device that the slope set up, sets firmly the inside heat transfer device of circulation device and difference in temperature conversion unit, heat transfer device includes the heat transfer pipeline, the difference in temperature conversion unit is hugged closely the outer wall of heat transfer pipeline, aluminium oxide miropowder flows through the difference in temperature conversion unit.
2. The alumina micropowder-based cogeneration system of claim 1, wherein: the circulation device comprises a powder inlet, a circulation cavity and a powder outlet, wherein the circulation cavity is communicated with the powder inlet and the powder outlet, and the height of the powder inlet is higher than that of the powder outlet.
3. The alumina micropowder-based cogeneration system of claim 2, wherein: the heat exchange device is further provided with a water inlet and a water outlet, the water inlet is communicated with the water outlet through the heat exchange pipeline, the water outlet is positioned at one end close to the powder inlet, and the water inlet is positioned at one end close to the powder outlet.
4. The alumina micropowder-based cogeneration system of claim 1, wherein: the heat exchange pipeline is bent and arranged, the heat exchange pipeline comprises a plurality of first cooling pipes which are communicated with each other, the plurality of first cooling pipes are arranged side by side, and the first cooling pipes are connected end to end.
5. The alumina micropowder-based cogeneration system of claim 4, wherein: and an included angle exists between the length direction of the first cooling pipe and the flow direction of the micro powder.
6. The alumina micropowder-based cogeneration system of claim 4, wherein: the heat exchange pipeline is bent into an S shape or a spiral shape or a pi shape.
7. The alumina micropowder-based cogeneration system of claim 3, wherein: the heat exchange pipeline is arranged in a straight pipe manner, and comprises a plurality of second cooling pipes which are arranged side by side and are communicated with the water inlet and the water outlet;
The direction of water flow in the second cooling pipe is opposite to the direction of the micro powder.
8. The alumina micropowder-based cogeneration system of claim 1, wherein: the inclination angle of the circulating device and the basal plane is 15-90 degrees.
9. The alumina micropowder-based cogeneration system of claim 1, wherein: the temperature difference conversion unit is a semiconductor material temperature difference conversion unit.
10. The alumina micropowder-based cogeneration system of claim 9, wherein: the temperature difference conversion unit comprises a cold end contacted with the heat exchange pipeline and a hot end contacted with the micro powder at one end away from the heat exchange pipeline;
The hot end is provided with a protective sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322441016.3U CN221002884U (en) | 2023-09-07 | 2023-09-07 | Waste heat power generation system based on alumina micropowder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322441016.3U CN221002884U (en) | 2023-09-07 | 2023-09-07 | Waste heat power generation system based on alumina micropowder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221002884U true CN221002884U (en) | 2024-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322441016.3U Active CN221002884U (en) | 2023-09-07 | 2023-09-07 | Waste heat power generation system based on alumina micropowder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221002884U (en) |
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2023
- 2023-09-07 CN CN202322441016.3U patent/CN221002884U/en active Active
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