CN113899220B - Magnesium slag waste heat utilization system - Google Patents
Magnesium slag waste heat utilization system Download PDFInfo
- Publication number
- CN113899220B CN113899220B CN202111227736.9A CN202111227736A CN113899220B CN 113899220 B CN113899220 B CN 113899220B CN 202111227736 A CN202111227736 A CN 202111227736A CN 113899220 B CN113899220 B CN 113899220B
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- air
- air flow
- heat
- magnesium slag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/20—Obtaining alkaline earth metals or magnesium
- C22B26/22—Obtaining magnesium
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention provides a magnesium slag waste heat utilization system, which comprises a heat exchange bin; the first dust remover is communicated with the inside of the heat exchange bin and can remove dust from the first airflow flowing out of the heat exchange bin; the heat exchanger comprises a heat exchanger shell and a heat exchange pipeline which is positioned in the heat exchanger shell and used for circulating combustion air, the first air flow flowing out of the first dust remover can exchange heat with the combustion air, and the combustion air is conveyed into Pi Jianglu after exchanging heat with the first air flow; the air entraining device can drive the first air flow into the heat exchange bin and sequentially discharge the first air flow to the external environment after passing through the heat exchange bin, the first dust remover and the heat exchanger. According to the invention, cold air in the external environment is forcedly introduced into the heat exchange bin by the air entraining device, contacts and exchanges heat with high-temperature magnesium slag in the heat exchange bin to form high-temperature first air flow, exchanges heat with cold combustion-supporting air in the heat exchange pipeline of the heat exchanger, and the heated combustion-supporting hot air is introduced into the Pidgeon furnace to realize combustion supporting of fuel in the furnace, so that the aim of saving coal gas can be realized.
Description
Technical Field
The invention belongs to the technical field of magnesium smelting resources and waste heat utilization, and particularly relates to a magnesium slag waste heat utilization system.
Background
The production of original magnesium in China generally adopts the Pidgeon process, which belongs to a thermal reduction method, and the process has the advantages of simple technology and low equipment cost, but has higher energy consumption and low thermal utilization rate, and simultaneously generates a large amount of reduced magnesium slag which is generated along with the magnesium reduction process, the tapping temperature of the magnesium slag is high, generally about 1000 ℃, a large amount of heat energy is contained, the heat of the magnesium slag is rarely recycled in the production, and the thermal magnesium slag is naturally cooled in the air, so that the heat is wasted. Research on magnesium slag utilization is now focused mainly on recycling aspects such as: manufacturing cement, building bricks and the like by using the cooled magnesium slag; the research on the magnesium slag waste heat recovery is not more, the main focus is on the aspect of producing steam by using a waste heat boiler, and the waste heat utilization is insufficient.
Disclosure of Invention
Therefore, the invention provides a magnesium slag waste heat utilization system, which can overcome the defect that the magnesium slag waste heat is not fully utilized in the related technology.
In order to solve the above problems, the present invention provides a magnesium slag waste heat utilization system, comprising:
the heat exchange bin is used for receiving magnesium slag discharged from a slag outlet of Pi Jianglu;
the first dust remover is communicated with the inside of the heat exchange bin and can remove dust from the first airflow flowing out of the heat exchange bin;
the heat exchanger comprises a heat exchanger shell and a heat exchange pipeline which is positioned in the heat exchanger shell and used for circulating combustion air, the first air flow flowing out of the first dust remover can exchange heat with the combustion air, and the combustion air is conveyed into the Pi Jianglu after exchanging heat with the first air flow;
the air entraining device can drive the first air flow into the heat exchange bin and sequentially discharge the first air flow to the external environment after passing through the heat exchange bin, the first dust remover and the heat exchanger.
In some embodiments of the present invention, in some embodiments,
the heat exchange bin comprises a bin body, wherein a crawler belt conveying device is arranged in the bin body, magnesium slag entering the heat exchange bin can be conveyed to a second end through a first end of the crawler belt conveying device, and the magnesium slag can fall under the action of dead weight at the second end.
In some embodiments of the present invention, in some embodiments,
the crawler conveying devices are arranged in two groups at intervals up and down along the height of the bin body, and the second ends of one group and the second ends of the other group are staggered in the height direction.
In some embodiments of the present invention, in some embodiments,
the second end of the crawler conveyor has a height that is higher than the first end it has.
In some embodiments of the present invention, in some embodiments,
a grid is arranged at the top of the bin body; and/or the bottom of the bin body is provided with a first gravity self-locking slag outlet.
In some embodiments of the present invention, in some embodiments,
the first dust remover is provided with a dust removing shell, the dust removing shell is provided with a first inner wall surface and a second inner wall surface which are oppositely arranged, the first inner wall surface is provided with a plurality of first baffles which are alternately arranged along the height direction, the first baffles are connected with a first baffle connecting rod, the horizontal included angle of the first baffles is adjusted by a first angle adjuster, the second inner wall surface is provided with a plurality of second baffles which are alternately arranged along the height direction, the second inner wall surface is provided with a plurality of second baffles which are connected with a second baffle connecting rod, the horizontal included angle of the second baffles is adjusted by a second angle adjuster, and the first baffles and the second baffles are alternately arranged along the height direction, and the free ends of the first baffles are intersected with the free ends of the second baffles.
In some embodiments of the present invention, in some embodiments,
the dust removal shell is coated with a heat insulation material; and/or the bottom of the dust removal shell is provided with a second gravity self-locking slag hole.
In some embodiments of the present invention, in some embodiments,
the heat exchanger shell is provided with an air inlet and an air outlet, the heat exchange pipeline is provided with an air flow inlet and an air flow outlet, the air flow inlet is arranged corresponding to the air outlet, and the air flow outlet is arranged corresponding to the air inlet; and/or a second dust remover is also connected between the heat exchanger and the air entraining device, and the air entraining device can drive the first air flow into the heat exchange bin and sequentially discharge the first air flow to the external environment after passing through the heat exchange bin, the first dust remover, the heat exchanger and the second dust remover; and/or the bottom plate of the heat exchanger shell is inclined downwards along the flow direction of the first airflow in the heat exchanger.
In some embodiments of the present invention, in some embodiments,
the heat exchange pipeline between the air flow inlet and the air flow outlet extends in a serpentine shape; and/or, the second dust remover is a cloth bag dust remover; and/or the heat exchanger shell is coated with a heat insulation material on the outer side.
In some embodiments of the present invention, in some embodiments,
the included angle between the bottom plate and the horizontal plane is B, and B=10 degrees; and/or the lowest position of the bottom plate is provided with a third gravity self-locking slag hole.
According to the magnesium slag waste heat utilization system provided by the invention, cold air in an external environment is forcedly introduced into the heat exchange bin by the air entraining device, contacts and exchanges heat with high-temperature magnesium slag in the heat exchange bin to form high-temperature first air flow, and after the first air flow containing a large amount of dust is subjected to primary dust removal through the first dust remover, the first air flow exchanges heat with cold combustion-supporting air in a heat exchange pipeline of the heat exchanger, and heated combustion-supporting hot air is introduced into the Pijiang furnace to realize combustion supporting of fuel in the furnace, so that the aim of saving coal gas can be fulfilled.
Drawings
FIG. 1 is a schematic diagram of a magnesium slag waste heat utilization system according to an embodiment of the present invention;
FIG. 2 is a schematic view showing an internal structure of the first dust collector in FIG. 1;
FIG. 3 is a schematic horizontal cross-sectional view of the first dust collector of FIG. 1;
FIG. 4 is a schematic view (front view) of the first or second angle adjuster of FIG. 3;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a top view of FIG. 4;
FIG. 7 is a schematic view of the internal structure of the heat exchanger of FIG. 1;
fig. 8 is a schematic horizontal cross-section of fig. 5.
The reference numerals are expressed as:
1. a heat exchange bin; 11. a bin body; 12. a crawler belt conveying device; 13. a grille; 14. the first gravity is self-locking to the slag outlet; 2. pi Jianglu; 21. a slag outlet; 3. a first dust collector; 31. a dust removal shell; 32. a first baffle; 33. a second baffle; 34. the second gravity self-locking slag outlet; 4. a heat exchanger; 41. a heat exchanger housing; 42. an air inlet; 43. an air outlet; 44. a third gravity self-locking slag outlet; 45. a heat exchange pipeline; 451. an air flow inlet; 452. an air flow outlet; 5. an air entraining device; 6. a second dust collector; 7. a thermal insulation material; 81. a first angle adjuster; 82. a first baffle connecting rod; 83. a second angle adjuster; 84. a second baffle connecting rod; 85. a slide bar; 9. adjusting a screw; 10. sliding the adjusting member.
Detailed Description
Referring to fig. 1 to 8 in combination, according to an embodiment of the present invention, there is provided a magnesium slag waste heat utilization system including: the heat exchange bin 1 is used for receiving magnesium slag discharged from a slag outlet 21 of the Pijiang furnace 2; the first dust remover 3 is communicated with the inside of the heat exchange bin 1 and can remove dust from the first air flow flowing out of the heat exchange bin 1; a heat exchanger 4, comprising a heat exchanger shell 41 and a heat exchange pipeline 45 in the heat exchanger shell for circulating combustion air, wherein the first air flow flowing out of the first dust remover 3 can exchange heat with the combustion air, and the combustion air is conveyed into the Pidgeon furnace 2 after exchanging heat with the first air flow; the bleed air device 5 (for example, a conventional bleed air machine) is capable of driving the first air flow into the heat exchange chamber 1 and discharging the first air flow to the external environment after passing through the heat exchange chamber 1, the first dust collector 3 and the heat exchanger 4 in sequence, and it should be noted that the first air flow and the combustion air may be identical in composition, or may be different in some cases, and in this technical scheme, the purpose of distinguishing the first air flow from the combustion air flow is to facilitate the clear description of the technical scheme of the present invention. In a specific embodiment, the first air flow and the combustion air are both from air in the external environment, and the combustion air is introduced into the Pidgeon furnace 2 after heat exchange and temperature rise of the first air flow to help combustion of fuel in the Pidgeon furnace. In the technical scheme, cold air in the external environment is forcedly introduced into the heat exchange bin 1 by the air entraining device 5, and contacts and exchanges heat with high-temperature magnesium slag in the heat exchange bin 1 to form high-temperature first air flow, after the first air flow containing a large amount of dust passes through the first dust remover 3 for dust removal for one time, the first air flow exchanges heat with cold combustion air in the heat exchange pipeline 45 of the heat exchanger 4, and heated combustion-supporting hot air is introduced into the Pijiang furnace 2 to realize combustion supporting of in-furnace fuel, so that the purpose of saving coal gas can be realized. The first dust collector 3 is arranged before the heat exchanger 4, and can remove dust in the first air flow to prevent blocking an air flow channel in the first dust collector 3.
In some embodiments, the heat exchange bin 1 comprises a bin body 11, wherein a crawler belt conveying device 12 is arranged in the bin body 11, the crawler belt conveying device 12 can convey magnesium slag entering the heat exchange bin 1 from a first end to a second end of the crawler belt conveying device 12, and the magnesium slag can fall under the action of dead weight at the second end. The track conveying device 12 specifically adopts a metal track, and takes the principle of being capable of tolerating the high temperature of magnesium slag as a principle, and it can be understood that the track conveying device 12 further comprises a driving device (such as a rotating motor or a hydraulic motor) and a corresponding roller structure, which can drive the metal track to rotate, and the conventional design of the conveying device is not repeated in the present invention. In this technical scheme, the crawler belt conveying device 12 can convey the magnesium slag carried on the crawler belt conveying device from one side (corresponding to the first end) of the bin body 11 to the other side (corresponding to the second end) of the bin body 11, so that the travel of the magnesium slag in the heat exchange bin 1 can be increased, the high-temperature magnesium slag can exchange heat with the first air flow fully therein, and the heat exchange efficiency is ensured.
In some embodiments, the crawler belt conveyor 12 has at least two groups, specifically, two groups are exemplified, the two groups of crawler belt conveyors 12 are arranged at intervals up and down along the height of the bin 11, and the second ends of one group and the second ends of the other group form a stagger along the height direction, so that the magnesium slag in the crawler belt conveyor 12 with the upper height can freely fall onto the crawler belt conveyor 12 with the lower height from the second ends of the crawler belt conveyors 12, and the two crawler belt conveyors 12 run in parallel in opposite directions, so that the travel of the magnesium slag in the heat exchange bin 1 can be further increased, and the heat exchange efficiency is improved, so that the cooling of the magnesium slag is more sufficient. Further, the second end of the crawler belt conveyor 12 is higher than the first end of the crawler belt conveyor 12, that is, the crawler belt conveyor 12 is arranged in an inclined manner, so that magnesium slag on the crawler belt conveyor has a throwing trend at the second end, the travel of the magnesium slag in the heat exchange bin 1 can be further increased, and the heat exchange efficiency is further improved.
The metal crawler belt is preferably of a hollow structure, and the metal crawler belt of the hollow structure can allow the first air flow to pass through the hollow structure, so that magnesium slag dust on the metal crawler belt can be taken away by utilizing the air speed, and accumulation of the magnesium slag dust on the metal crawler belt can be prevented.
The top of the bin body 11 is provided with a grid 13 for preventing sundries and a reduction tank from falling into the bin body 11; the bottom of the bin body 11 is provided with a first gravity self-locking slag outlet 14 which can automatically discharge magnesium slag by means of gravity after enough magnesium slag is accumulated in the bottom space of the bin body 11.
The first dust collector 3 has a dust collecting housing 31, the dust collecting housing 31 has a first inner wall surface and a second inner wall surface which are oppositely arranged, the first inner wall surface is provided with a plurality of first baffles 32 which are alternately arranged along the height direction, the first baffles 32 are connected with a first baffle connecting rod 82, the horizontal included angle of the first baffles 32 can be adjusted through a first angle adjuster 81, the second inner wall surface is provided with a plurality of second baffles 33 which are alternately arranged along the height direction, the second baffles 33 are connected with a second baffle connecting rod 84, the horizontal included angle of the second baffles 33 can be adjusted through a second angle adjuster 83, the first baffles 32 and the second baffles 33 are alternately arranged along the height direction, and the free ends of the first baffles 32 and the free ends of the second baffles 33 form a cross. The first baffle 32 and the second baffle 33 can form a barrier to a large amount of dust carried in the first airflow, so that large-particle dust therein is separated and falls to the bottom of the dust removing shell 31, and preferably, the bottom of the dust removing shell 31 is provided with a second gravity self-locking slag outlet 34, so that the magnesium slag can be automatically discharged by gravity after enough magnesium slag is accumulated in the bottom space of the first dust remover 3. In addition, the first angle adjuster 81 and the second angle adjuster 83 may adjust the inclination angles of the first baffle 32 and the second baffle 33, that is, the horizontal angle, so that the magnitude of the horizontal angle is more matched with the repose angle of the magnesium slag (or magnesia), thereby further effectively preventing the magnesium slag or magnesia from accumulating on the baffles, and in a specific embodiment, the repose angle of the magnesium slag (or magnesia) is generally 40 ° to 50 °, so that the horizontal angle of the first angle adjuster 81 and the second angle adjuster 83 may be adjusted to be not less than 40 °, specifically 45 °.
The specific structures of the first angle adjuster 81 and the second angle adjuster 83 are preferably the same, specifically, the first angle adjuster 81 has a housing (not indicated in the figure), a sliding adjusting member 10 is disposed in the housing, the sliding adjusting member 10 is slidably connected with the housing, and can push the sliding adjusting member 10 to generate linear displacement under the screwing action of an adjusting screw 9 (which is in threaded connection with the housing), corresponding sliding grooves (the specific shape of which is reasonably designed according to the angle adjusting range of the first baffle 32, and one end of which is preferably an arc) are configured on opposite wall surfaces of the sliding adjusting member 10, and two opposite sides of the first baffle connecting rod 82 are respectively provided with a sliding rod 85, wherein the sliding rods 85 are inserted into the sliding grooves.
In order to improve the utilization efficiency of the waste heat, it is preferable that the dust removing shell 31 is coated with the heat insulating material 7, and/or the heat exchanger shell 41 is coated with the heat insulating material 7.
In some embodiments, the heat exchanger housing 41 has an air inlet 42 and an air outlet 43 corresponding to the first air flow, the heat exchange tube 45 has an air inlet 451 and an air outlet 452 corresponding to the combustion air, the air inlet 451 is disposed corresponding to the air outlet 43, and the air outlet 452 is disposed corresponding to the air inlet 42, so that the flow direction of the combustion air and the flow direction of the first air flow have a countercurrent tube section, which can improve the heat exchange efficiency of both the first air flow and the combustion air. Further, the heat exchange pipe 45 between the air inlet 451 and the air outlet 452 extends in a serpentine shape, so as to further increase the heat exchange contact area between the combustion air and the first air flow, and improve the heat exchange efficiency.
Further, a second dust collector 6 is further connected between the heat exchanger 4 and the air entraining device 5, and the temperature of the first air flow is reduced at this time, so the second dust collector 6 may be a bag-type dust collector, the second dust collector 6 may further filter dust in the first air flow, and the air entraining device 5 may drive the first air flow into the heat exchange bin 1 and sequentially pass through the heat exchange bin 1, the first dust collector 3, the heat exchanger 4 and the second dust collector 6 and then be discharged to the external environment.
The bottom plate of the heat exchanger shell 41 is inclined downwards along the flow direction of the first air flow in the heat exchanger 4, so that dust or magnesium slag possibly carried in the bottom plate can be accumulated at the low point of the bottom plate by utilizing the flow impulse of the first air flow, and at the moment, a third gravity self-locking slag outlet 44 is arranged at the lowest position of the bottom plate, and after enough magnesium slag is accumulated in the bottom space of the heat exchanger 4, the magnesium slag is automatically discharged by means of gravity. In some embodiments, the angle between the bottom plate and the horizontal is B, b=10°,
it will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (9)
1. A magnesium slag waste heat utilization system, comprising:
the heat exchange bin (1) is used for receiving magnesium slag discharged from a slag outlet (21) of the Pi Jianglu (2);
the first dust remover (3) is communicated with the inside of the heat exchange bin (1) and can remove dust from the first airflow flowing out of the heat exchange bin (1);
a heat exchanger (4) comprising a heat exchanger housing (41) and a heat exchange duct (45) therein for the circulation of combustion air, the first air flow exiting from the first dust collector (3) being capable of heat exchange with the combustion air, the combustion air being conveyed into the Pi Jianglu (2) after heat exchange with the first air flow;
the air entraining device (5) can drive the first air flow into the heat exchange bin (1) and sequentially discharge the first air flow to the external environment after passing through the heat exchange bin (1), the first dust remover (3) and the heat exchanger (4);
the first dust remover (3) is provided with a dust removing shell (31), the dust removing shell (31) is provided with a first inner wall surface and a second inner wall surface which are oppositely arranged, the first inner wall surface is provided with a plurality of first baffles (32) which are arranged at intervals along the height direction, the first baffles (32) are connected with a first baffle connecting rod (82), the horizontal included angle of the first baffles (32) can be adjusted through a first angle adjuster (81), the second inner wall surface is provided with a plurality of second baffles (33) which are arranged at intervals along the height direction, the second baffles (33) are connected with a second baffle connecting rod (84), the horizontal included angle of the second baffles (33) can be adjusted through a second angle adjuster (83), the first baffles (32) and the second baffles (33) are alternately arranged along the height direction, and the free ends of the first baffles (32) and the free ends of the second baffles (33) form crossed.
2. The magnesium slag waste heat utilization system of claim 1, wherein,
the heat exchange bin (1) comprises a bin body (11), wherein a crawler conveying device (12) is arranged in the bin body (11), magnesium slag entering the heat exchange bin (1) can be conveyed to a second end through a first end of the crawler conveying device (12), and the magnesium slag can fall under the action of dead weight at the second end.
3. The magnesium slag waste heat utilization system according to claim 2, wherein,
the crawler conveying devices (12) are provided with two groups, the two groups of crawler conveying devices (12) are arranged at intervals up and down along the height of the bin body (11), and the second ends of one group of the two groups are staggered with the second ends of the other group of the two groups of the crawler conveying devices along the height direction.
4. The magnesium slag waste heat utilization system according to claim 2, wherein,
the second end of the crawler conveyor (12) is higher than the first end it has.
5. The magnesium slag waste heat utilization system according to claim 2, wherein,
a grid (13) is arranged at the top of the bin body (11); and/or the bottom of the bin body (11) is provided with a first gravity self-locking slag outlet (14).
6. The magnesium slag waste heat utilization system of claim 1, wherein,
the dust removal shell (31) is coated with a heat insulation material (7); and/or the bottom of the dust removing shell (31) is provided with a second gravity self-locking slag outlet (34).
7. The magnesium slag waste heat utilization system of claim 1, wherein,
the heat exchanger shell (41) is provided with an air inlet (42) and an air outlet (43), the heat exchange pipeline (45) is provided with an air flow inlet (451) and an air flow outlet (452), the air flow inlet (451) is arranged corresponding to the air outlet (43), and the air flow outlet (452) is arranged corresponding to the air inlet (42); and/or a second dust remover (6) is further connected between the heat exchanger (4) and the air entraining device (5), and the air entraining device (5) can drive the first air flow into the heat exchange bin (1) and sequentially discharge the first air flow to the external environment after passing through the heat exchange bin (1), the first dust remover (3), the heat exchanger (4) and the second dust remover (6); and/or the bottom plate of the heat exchanger housing (41) is inclined downwards along the flow direction of the first air flow in the heat exchanger (4).
8. The magnesium slag waste heat utilization system of claim 7, wherein,
-said heat exchange conduit (45) between said air flow introduction port (451) and said air flow introduction port (452) extends in a serpentine shape; and/or the second dust remover (6) is a cloth bag dust remover; and/or the heat exchanger shell (41) is coated with a heat insulation material (7) on the outer side.
9. The magnesium slag waste heat utilization system of claim 7, wherein,
the included angle between the bottom plate and the horizontal plane is B, and B=10 degrees; and/or the lowest position of the bottom plate is provided with a third gravity self-locking slag hole (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111227736.9A CN113899220B (en) | 2021-10-21 | 2021-10-21 | Magnesium slag waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111227736.9A CN113899220B (en) | 2021-10-21 | 2021-10-21 | Magnesium slag waste heat utilization system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113899220A CN113899220A (en) | 2022-01-07 |
| CN113899220B true CN113899220B (en) | 2023-05-19 |
Family
ID=79025977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111227736.9A Active CN113899220B (en) | 2021-10-21 | 2021-10-21 | Magnesium slag waste heat utilization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113899220B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114608335B (en) * | 2022-03-25 | 2023-10-27 | 清华大学 | Sinter waste heat recovery device and recovery method for enhanced heat exchange |
| CN114705054B (en) * | 2022-03-25 | 2023-10-27 | 清华大学 | Multi-bin heat exchange sinter waste heat recovery device and recovery method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718416B (en) * | 2012-02-29 | 2013-12-25 | 邹岳明 | Method for recovering heat in high temperature slag from yellow phosphorus furnace and making brick |
| CN105423753A (en) * | 2015-11-19 | 2016-03-23 | 广东工业大学 | Continuous high-temperature low-oxygen combustion aluminum melting furnace with porous spraying pipe heat exchanger |
| CN105716437B (en) * | 2016-04-15 | 2017-10-17 | 山西大学 | Magnesium reduction slag afterheat utilizing system |
| CN106969638A (en) * | 2017-04-01 | 2017-07-21 | 江苏省冶金设计院有限公司 | Rotary hearth furnace fume afterheat gradient utilization system and application method |
| CN109539821B (en) * | 2018-10-19 | 2021-03-12 | 天津大学 | Method and device for recycling heat energy of high-temperature metallurgical slag |
| CN212476557U (en) * | 2020-08-20 | 2021-02-05 | 辽宁圣世资源环境科技有限公司 | Device for preparing magnesium phosphate cement by using medium-burned magnesium oxide |
-
2021
- 2021-10-21 CN CN202111227736.9A patent/CN113899220B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113899220A (en) | 2022-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113899220B (en) | Magnesium slag waste heat utilization system | |
| CN202254893U (en) | Flue gas radiation-type waste heat boiler recovery system for electric arc furnace | |
| CN105603135A (en) | High-temperature liquid-state slag dry type centrifugation and granulation waste heat recycling system and method | |
| CN101724728A (en) | Waste heat recovery and bag-type dust removal system | |
| CN111426206A (en) | Sintering cooling and waste heat recovery integrated kiln | |
| CN102322746A (en) | Electric arc furnace smoke radiation type waste heat boiler recovery system | |
| CN107796226B (en) | Sintering ore grate furnace cooling and waste heat utilization device and waste heat utilization method | |
| CN111578723A (en) | Metallurgical high temperature dust-containing waste gas treatment system | |
| CN103982884A (en) | Multi-radiation evaporation screen afterheat boiler | |
| CN202246731U (en) | Waste heat recovery and cloth bag dust removing system | |
| RU157373U1 (en) | INSTALLATION FOR PRELIMINARY HEATING OF BURNED ANODES FOR THE PRODUCTION OF ALUMINUM | |
| CN201811226U (en) | Gas and air device of condensation type circulating fluidized-bed boiler | |
| CN102679751B (en) | Organic heat carrier waste-heat furnace and waste-heat furnace system | |
| CN109701323A (en) | The axis stream Combined dust removal system and method for the high ash-laden gas of high temperature | |
| CN2256085Y (en) | Coal air-heating furnace | |
| CN1244420C (en) | Heating device for casting sand | |
| CN215261229U (en) | Waste heat recovery device for solid particles | |
| CN101893388A (en) | Electric furnace double dust collection and waste heat recovery system and method | |
| CN205561606U (en) | Heat exchange device for recycling flue gas waste heat | |
| CN202630705U (en) | Organic heat carrier waste heat furnace and waste heat furnace system | |
| CN2828044Y (en) | Coal charging, coke discharging smoke preventing and dust control device of movable coke oven | |
| CN211011342U (en) | Wind-water combined circulation vertical slag cooler | |
| CN114184055A (en) | Cement kiln bypass air discharge waste heat boiler | |
| CN207815303U (en) | CFB Slag cooling structure | |
| CN2498540Y (en) | Horizontal smokeless coal boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |