CN118089453A - Phase change heat storage component and flue gas complementary energy recovery method - Google Patents
Phase change heat storage component and flue gas complementary energy recovery method Download PDFInfo
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- CN118089453A CN118089453A CN202410110212.9A CN202410110212A CN118089453A CN 118089453 A CN118089453 A CN 118089453A CN 202410110212 A CN202410110212 A CN 202410110212A CN 118089453 A CN118089453 A CN 118089453A
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- 230000008859 change Effects 0.000 title claims abstract description 52
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000003546 flue gas Substances 0.000 title claims abstract description 44
- 238000005338 heat storage Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000011084 recovery Methods 0.000 title abstract description 9
- 230000000295 complement effect Effects 0.000 title abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 52
- 239000007769 metal material Substances 0.000 claims abstract description 24
- 239000012071 phase Substances 0.000 claims description 41
- 239000000779 smoke Substances 0.000 claims description 26
- 239000007791 liquid phase Substances 0.000 claims description 6
- 239000007790 solid phase Substances 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 abstract description 15
- 238000003723 Smelting Methods 0.000 abstract description 12
- 150000003839 salts Chemical class 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 229910001338 liquidmetal Inorganic materials 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241000309551 Arthraxon hispidus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Phase-change heat storage component and flue gas complementary energy recovery method relate to phase-change heat storage technical field. In order to solve the technical problems of complex loop design, higher cost and low efficiency caused by the fact that heat exchange media such as molten salt or water are needed to be used and pumps are needed to be used for driving in the existing flue gas waste heat utilization technology in the prior art, the invention provides the following technical scheme: a phase change thermal storage member, the member comprising: a heat-resistant wall, a metal material and a connector; the heat-resistant wall is cylindrical, the metal material is arranged in the cylindrical, and the connectors are arranged at two ends of the cylindrical; the metal material is a phase-changeable metal suitable for different temperature sections. Can be applied to the flue gas heat balance work of the steel smelting furnace.
Description
Technical Field
Relates to the technical field of phase change heat storage.
Background
The flue gas generated in the steel smelting process has the characteristics of discontinuity, dustiness, explosiveness and the like, the temperature of the flue gas can reach 1400-1600 ℃, the highest temperature can reach 2000 ℃, and the lowest temperature can be less than 100 ℃, which provides a great challenge for the stable operation of the flue gas waste heat recovery.
The intermittent smelting furnace which is operated at home and abroad mainly adopts a water cooling mode and a partial vaporization cooling mode to reduce the temperature of the flue gas, and then solves the pollution to the environment caused by production through a dust removal system. The treatment mode not only does not recover heat, but also needs a large amount of circulating cooling water, and the electric energy and the circulating water are very high in loss.
The traditional OG wet method, LT dry method and other flue gas waste energy recycling technologies have good effects in explosion prevention and dust removal, but also have the problems of unrecovered middle and low temperature flue gas waste heat, large high temperature flue gas waste heat utilization loss, low converter gas recycling level and serious environmental pollution. The concept of recovering the waste heat of the flue gas in the middle temperature section (700-1000 ℃) based on fused salt heat accumulation is also currently provided, namely, a flue heat exchanger and a heat accumulation system are added on the basis of traditional process equipment, and the sensible heat of the fused salt is utilized to assist in generating superheated steam. These systems all use heat exchange media such as molten salt or water and therefore must be driven by pumps, resulting in complex circuit designs, high costs, and inefficiency.
In order to ensure stable production of the waste heat boiler for utilizing the waste heat of the flue gas of the smelting furnace, the smaller and better the fluctuation of the inlet temperature of the waste heat boiler is required, and a heat accumulator part suitable for balancing the heat of the flue gas of the steel smelting furnace is needed.
In the prior art, a study is made on the basis of a flue gas waste heat recovery thought of a fused salt heat storage medium-temperature section (700-1000 ℃) and on the basis of traditional process equipment, a flue heat exchanger and a heat storage system are added, and the sensible heat of the fused salt is utilized to assist in generating superheated steam. However, this system uses heat exchange media, such as molten salt or water, and requires the use of pumps to drive, resulting in complex circuit designs, high costs, and inefficiency.
Disclosure of Invention
In order to solve the technical problems of complex loop design, higher cost and low efficiency caused by the fact that heat exchange media such as molten salt or water are needed to be used and pumps are needed to be used for driving in the existing flue gas waste heat utilization technology in the prior art, the invention provides the following technical scheme:
a phase change thermal storage member, the member comprising: a heat-resistant wall, a metal material and a connector;
The heat-resistant wall is cylindrical, the metal material is arranged in the cylindrical, and the connectors are arranged at two ends of the cylindrical;
The metal material is a phase-changeable metal suitable for different temperature sections.
Further, there is provided a preferred embodiment wherein the heat-resistant wall is rectangular in cross section in a direction perpendicular to the axis.
Further, there is provided a preferred embodiment, wherein the heat-resistant wall is disposed in a direction parallel to the incoming flue gas.
Further, there is provided a preferred embodiment wherein the heat resistant wall is cylindrical.
Further, there is provided a preferred embodiment wherein fins are further provided on the outer wall of the heat-resistant wall, the fins being uniformly arranged around the outer wall of the heat-resistant wall.
Further, there is provided a preferred embodiment, wherein the heat-resistant wall is disposed in a direction perpendicular to the incoming smoke.
Further, there is provided a preferred embodiment wherein the heat-resistant wall has a water drop shape in a cross section perpendicular to the axial direction.
Further, there is provided a preferred embodiment wherein an inner tube is provided inside the heat-resistant wall, the axial direction of the inner tube coincides with the axis of the heat-resistant wall, and a metal material is provided between the outer wall of the inner tube and the inner wall of the heat-resistant wall.
Further, there is provided a preferred embodiment, wherein the heat-resistant wall is disposed in a direction parallel to the incoming flue gas.
Based on the same inventive concept, the invention also provides a method for recovering residual energy of flue gas, which is realized based on the components and comprises the following steps:
Collecting incoming smoke;
when the temperature of the incoming flow smoke is higher than a preset temperature, the temperature of the smoke is absorbed through phase change metal solid-liquid phase change;
and when the temperature of the incoming flow smoke is lower than the preset temperature, increasing the temperature of the smoke through phase change metal liquid-solid phase change.
Compared with the prior art, the technical scheme provided by the invention has the following advantages:
The phase change heat storage component provided by the invention uses the metal phase change heat storage component to carry out smoke heat balance adjustment, and uses metal latent heat to store heat. The phase change metal has high heat conduction capability and larger solid-liquid phase change latent heat, and can meet the stability requirement of the temperature of the flue gas entering the waste heat boiler in a high-frequency smelting period.
Compared with the existing pump water-driving and pump molten salt-driving technology, the phase-change heat storage component provided by the invention reduces a large amount of pipeline and electric energy consumption, does not need to be driven by a pump, and reduces the complexity and cost of a system.
According to the phase change heat storage component provided by the invention, through the use of the metal phase change heat storage component, the heat of high-temperature flue gas can be stored in the liquid metal, when the temperature of the flue gas is reduced, the liquid-solid phase change heat release of the metal occurs, and the latent heat of the liquid metal is transferred to the flue gas, so that the heat balance of the flue gas is realized. Compared with the traditional flue gas waste heat recovery technology, the efficiency of flue gas heat recovery can be improved.
According to the phase change heat storage component provided by the invention, the metal phase change heat storage component is utilized for carrying out smoke heat balance adjustment, and pump driving is not needed, so that the complexity and cost of a system are reduced.
The phase-change heat storage component provided by the invention has high heat conduction capability and larger solid-liquid phase change latent heat, can meet the stability requirement of the temperature of the flue gas entering the waste heat boiler in a high-frequency smelting period, and improves the efficiency of flue gas heat recovery. The traditional flue gas waste heat recovery technology has a better heat balance effect.
The phase change heat storage component provided by the invention can be applied to the flue gas heat balance work of a steel smelting furnace.
Drawings
Fig. 1 is a side view and a cross-sectional view of a planar wall-shaped phase change metal heat accumulator.
Fig. 2 is a side view and a cross-sectional view of a tubular phase change metal thermal mass.
FIG. 3 is a side view and a cross-sectional view of a finned tubular phase change metal regenerator.
Fig. 4 is a side view and a cross-sectional view of a shaped tubular phase change metal thermal mass.
Fig. 5 is a side view and a cross-sectional view of a phase change metal regenerator of a double tube.
Fig. 6 is an arrangement of planar wall-shaped phase change metal heat accumulator elements within a heat accumulator apparatus.
Fig. 7 shows an arrangement of tubular phase change metal heat accumulator elements within a heat accumulator device, which arrangement may also be used with fin-containing tubular heat accumulator elements.
Fig. 8 is an arrangement of a double-layer tubular phase change metal heat accumulator member within a heat accumulator apparatus.
Fig. 9 is an arrangement of a shaped tubular phase change metal heat accumulator element in a heat accumulator apparatus.
Wherein, 11: heat-resistant wall, 12: metal material, 13: connector, 14: fins, 15: inner tube, 93: a metal plate.
Detailed Description
In order to make the advantages and benefits of the technical solution provided by the present invention more apparent, the technical solution provided by the present invention will now be described in further detail with reference to the accompanying drawings, in which:
A phase change thermal storage member, the member comprising: a heat-resistant wall 11, a metal material 12, and a joint head 13;
The heat-resistant wall 11 is in a cylindrical shape, the metal material 12 is arranged in the cylindrical shape, and the connectors 13 are arranged at two ends of the cylindrical shape;
the metallic material 12 is a phase-changeable metal adapted to different temperature segments.
Specifically, the metal phase change heat accumulator part mainly comprises a heat-resistant wall 11, a metal material 12 and a connector 13. The refractory wall 11 is the first barrier to contact with high temperature fumes from the smelting furnace, and the metal material 12 enclosed in the wall consists of a phase-changeable metal material 12 adapted to different temperature sections.
In the phase-change metal heat accumulator device, the metal phase-change heat accumulator parts are in an array combination mode, high-temperature flue gas from a smelting furnace enters the heat accumulator part array from one side, and the wall surface and incoming flow flue gas in the heat accumulator array perform convection heat exchange and radiation heat exchange. When the temperature of the incoming smoke is high, the metal generates solid-liquid phase heat absorption, so that the heat of the high-temperature smoke is stored in the liquid metal. When the temperature of the incoming flue gas is low, the metal generates liquid-solid phase transition heat release, so that the latent heat of the liquid metal is transferred to the flue gas. Thereby completing the heat balance of the flue gas.
Wherein the filling rate of the phase change metal in the space of the heat accumulator member is 98%.
In the embodiment, after the heat of the flue gas is subjected to metal phase change (solid-liquid-solid) heat accumulation and rebalancing adjustment, the temperature fluctuation of the flue gas at the inlet of the waste heat boiler can be controlled within 100-200 ℃ in the smelting process.
In the second embodiment, the phase change heat storage member according to the first embodiment is further defined, and the heat-resistant wall 11 has a rectangular cross section perpendicular to the axial direction.
In the third embodiment, the phase change heat storage member according to the second embodiment is further limited, and the heat-resistant wall 11 is disposed in a direction parallel to the incoming smoke.
The heat-resistant wall 11 and the phase-change metal are in a plane wall shape, the phase-change metal material 12 is closed by a wall surface, and two ends of the phase-change metal material are combined with the connector 13. The phase-change metal heat accumulator part in the shape of a plane wall is parallel to the incoming flow, and downstream heat exchange is carried out.
In the fourth embodiment, the heat-resistant wall 11 is cylindrical, and the phase-change heat storage member according to the first embodiment is further limited.
The heat-resistant wall 11 and the phase-change metal are formed in a tubular shape, the phase-change metal is enclosed in the tube, and both ends of the tube are combined with the connector 13.
In the fifth embodiment, the phase-change heat storage member provided in the fourth embodiment is further limited, fins 14 are further provided on the outer wall of the heat-resistant wall 11, and the fins 14 are uniformly arranged around the outer wall of the heat-resistant wall 11.
The phase change metal heat accumulator member in tubular form (with fins 14) is perpendicular to the incoming flow for lateral flow heat exchange.
In the sixth embodiment, the phase change heat storage member according to the fifth embodiment is further defined, and the heat-resistant wall 11 is disposed in a direction perpendicular to the incoming smoke.
In the seventh embodiment, the phase-change heat storage member according to the first embodiment is further defined, and the heat-resistant wall 11 has a water-drop shape in cross section perpendicular to the axial direction.
The heat-resistant wall 11 and the phase-change metal form a special-shaped tube, the left side of the cross section of the special-shaped tube is semicircular, the right side of the cross section of the special-shaped tube is wedge-shaped, the heat-resistant wall and the phase-change metal are combined at the semicircular position, the phase-change metal is sealed in the tube, and two ends of the tube are combined with the connector 13. The phase-change metal heat accumulator parts in the shape of special-shaped tubes are connected into a whole by the metal plates 93 to form a membranous special-shaped tube row, and the tube row of the phase-change metal heat accumulator parts is vertical to the incoming flow to carry out the horizontal flow heat exchange.
In an eighth embodiment, the phase change heat storage member according to the first embodiment is further defined by an inner tube 15 being provided inside the heat-resistant wall 11, an axis of the inner tube 15 being coincident with an axis of the heat-resistant wall 11, and the metal material 12 being provided between an outer wall of the inner tube 15 and an inner wall of the heat-resistant wall 11.
The phase change metal is encapsulated between the double layers of pipes, the inside and the outside of the pipes can be contacted with the flue gas, and the two ends of the pipes are combined with the connector 13.
In the ninth embodiment, the phase-change heat storage member according to the eighth embodiment is further defined, and the heat-resistant wall 11 is disposed in a direction parallel to the incoming smoke.
The phase-change metal heat accumulator parts in the shape of special-shaped tubes are connected into a whole by the metal plates 93 to form a membranous special-shaped tube row, and the tube row of the phase-change metal heat accumulator parts is vertical to the incoming flow to carry out the horizontal flow heat exchange.
The tenth embodiment provides a method for recovering residual energy of flue gas, which is implemented based on the component provided in the first embodiment, and includes:
Collecting incoming smoke;
when the temperature of the incoming flow smoke is higher than a preset temperature, the temperature of the smoke is absorbed through phase change metal solid-liquid phase change;
and when the temperature of the incoming flow smoke is lower than the preset temperature, increasing the temperature of the smoke through phase change metal liquid-solid phase change.
An eleventh embodiment, which is described in conjunction with fig. 1-9, further clearly and completely describes the technical solution provided above by a specific example, specifically:
The metal phase change heat accumulator part mainly comprises a heat-resistant wall 11, a metal material 12 and a connector 13. The heat-resistant wall 11 is the first barrier to contact with high temperature fumes from the smelting furnace and is made of alloy steel, with high thermal conductivity and high use temperature. The heat-resistant wall 11 may be in the form of a planar shape, a tubular shape, and a shaped tubular shape. The metal material 12 encapsulated in the wall has high thermal conductivity and latent heat of phase change, and different metal materials 12 can be adopted according to different flue gas temperatures. The connector 13 is used to secure a metal phase change heat accumulator part in the heat accumulator apparatus.
In the assembly and use of the metal phase change heat accumulator part, a heat exchange mode of a flue gas sweeping surface and a transverse sweeping surface is used, and heat transfer is performed in a radiation heat exchange mode.
In practice, in order to reduce as much as possible the deposition of dust in the flue gas on the heat exchange surfaces, the heat exchange surfaces are specially designed, for example, tubular heat accumulator members with special-shaped cross sections are designed and connected together by metal plates 93, which not only increases the strength but also increases the heat exchange area.
The technical solution provided by the present invention is described in further detail through several specific embodiments, so as to highlight the advantages and benefits of the technical solution provided by the present invention, however, the above specific embodiments are not intended to be limiting, and any reasonable modification and improvement, combination of embodiments, equivalent substitution, etc. of the present invention based on the spirit and principle of the present invention should be included in the scope of protection of the present invention.
In the description of the present invention, only the preferred embodiments of the present invention are described, and the scope of the claims of the present invention should not be limited thereby; furthermore, the descriptions of the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction. 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 invention, "N" means at least two, for example, two, three, etc., unless specifically defined otherwise. Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more N executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention. Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or N wires, a portable computer cartridge (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory. It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the N steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As with the other embodiments, if implemented in hardware, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments. In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
Claims (10)
1. A phase change thermal storage member, characterized in that the member comprises: a heat-resistant wall, a metal material and a connector;
The heat-resistant wall is cylindrical, the metal material is arranged in the cylindrical, and the connectors are arranged at two ends of the cylindrical;
The metal material is a phase-changeable metal suitable for different temperature sections.
2. The phase-change heat storage member according to claim 1, wherein the heat-resistant wall has a rectangular cross section in a direction perpendicular to the axis.
3. The phase-change heat storage member according to claim 2, wherein the heat-resistant wall is disposed in a direction parallel to the incoming smoke.
4. The phase-change heat storage member according to claim 1, wherein the heat-resistant wall is cylindrical.
5. The phase-change heat storage member according to claim 4, wherein fins are further provided on the outer wall of the heat-resistant wall, and the fins are uniformly arranged around the outer wall of the heat-resistant wall.
6. The phase-change heat storage member according to claim 5, wherein the heat-resistant wall is disposed in a direction perpendicular to the incoming smoke.
7. The phase-change heat storage member according to claim 1, wherein the heat-resistant wall has a water-drop shape in a cross section perpendicular to the axis direction.
8. The phase-change heat storage member according to claim 1, wherein an inner tube is provided inside the heat-resistant wall, an axial direction of the inner tube coincides with an axis of the heat-resistant wall, and a metal material is provided between an outer wall of the inner tube and an inner wall of the heat-resistant wall.
9. The phase-change heat storage member according to claim 8, wherein the heat-resistant wall is disposed in a direction parallel to the incoming smoke.
10. A method for recovering residual energy of flue gas, characterized in that it is carried out on the basis of the components of claim 1, comprising:
Collecting incoming smoke;
when the temperature of the incoming flow smoke is higher than a preset temperature, the temperature of the smoke is absorbed through phase change metal solid-liquid phase change;
and when the temperature of the incoming flow smoke is lower than the preset temperature, increasing the temperature of the smoke through phase change metal liquid-solid phase change.
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| CN202410110212.9A CN118089453A (en) | 2024-01-26 | 2024-01-26 | Phase change heat storage component and flue gas complementary energy recovery method |
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| CN104848704A (en) * | 2015-05-18 | 2015-08-19 | 山东耀华能源投资管理有限公司 | Electric furnace flue gas waste heat complete vaporization and heat accumulation type recovery system and working method thereof |
| CN105674781A (en) * | 2016-01-14 | 2016-06-15 | 南京净环热冶金工程有限公司 | Novel low temperature heat accumulator element |
| CN207262997U (en) * | 2017-08-04 | 2018-04-20 | 江苏双井电能装备科技有限公司 | A kind of electrical heating metal phase change regenerative apparatus |
| CN110822969A (en) * | 2018-08-09 | 2020-02-21 | 全球能源互联网研究院有限公司 | Heat exchange device and heat storage device |
| CN110595244A (en) * | 2019-10-18 | 2019-12-20 | 山东双涵石化装备有限公司 | Modularized alloy phase change heat storage and release device |
| CN113551432A (en) * | 2021-07-06 | 2021-10-26 | 浙江高晟光热发电技术研究院有限公司 | Particle temperature adjusting device |
| CN115790176A (en) * | 2022-10-19 | 2023-03-14 | 四川川锅锅炉有限责任公司 | Novel steelmaking waste heat recovery flue gas energy storage explosion-proof integrated process and equipment |
| CN116817617A (en) * | 2023-06-30 | 2023-09-29 | 北京京诚科林环保科技有限公司 | Flue gas temperature regulating device |
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