CN107806771B - Slag split-flow heat exchange device - Google Patents
Slag split-flow heat exchange device Download PDFInfo
- Publication number
- CN107806771B CN107806771B CN201711166940.8A CN201711166940A CN107806771B CN 107806771 B CN107806771 B CN 107806771B CN 201711166940 A CN201711166940 A CN 201711166940A CN 107806771 B CN107806771 B CN 107806771B
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- slag
- heat exchange
- material bed
- exchange material
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- 239000002893 slag Substances 0.000 title claims abstract description 147
- 239000000463 material Substances 0.000 claims abstract description 75
- 238000009826 distribution Methods 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 238000005338 heat storage Methods 0.000 claims abstract description 21
- 238000007664 blowing Methods 0.000 claims description 22
- 238000007599 discharging Methods 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000003475 lamination Methods 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 abstract description 14
- 238000011084 recovery Methods 0.000 abstract description 5
- 238000005469 granulation Methods 0.000 abstract description 4
- 230000003179 granulation Effects 0.000 abstract description 4
- 239000002245 particle Substances 0.000 description 6
- 239000011449 brick Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- F27D17/004—Systems for reclaiming waste 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
- F27D2017/007—Systems for reclaiming waste heat including regenerators
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
Abstract
The application relates to a slag split-flow heat exchange device, which comprises a closed shell, wherein a slag collecting chamber is arranged in the closed shell, a heat exchange material bed for bearing and conveying slag is arranged in the slag collecting chamber, an air distribution plate is arranged above the heat exchange material bed, the slag collecting chamber comprises a heat exchange cavity positioned above the air distribution plate, a split-flow cavity is arranged on the inner side of the side wall of the closed shell, a heat storage structure for absorbing slag radiant heat is arranged at the upper end of the air distribution plate, a channel for communicating the heat exchange cavity with the split-flow cavity is arranged on the heat storage structure, and an air hole for communicating the slag collecting chamber with the split-flow cavity is arranged at the lower end of the air distribution plate. The slag diverting heat exchange device can divert airflow before entering the air distribution plate area, and avoid the overhigh wind speed of the air distribution plate area; the heat storage structure at the upper end of the air distribution plate can be used for absorbing radiant heat generated during slag granulation, and the cooling air flow passing through the flow distribution cavity carries part of heat to enter the heat exchange cavity, so that the waste heat recovery and utilization efficiency is high.
Description
[ Field of technology ]
The application relates to a slag split-flow heat exchange device.
[ Background Art ]
In the current industrial field, smelting furnace equipment generates a large amount of slag in the production process, and the slag is often accompanied by a large amount of waste heat, and technical data show that the part of waste heat resources account for more than 30% of the fuel consumption of the part of waste heat resources, so that great potential exists for waste heat utilization of the slag. The utilization of the residual heat of the slag can reduce the energy consumption of unit products and reduce the environmental pollution, so that the utilization of the residual heat of the slag has considerable economic and social benefits.
When the air quenching method is adopted to recycle the waste heat of slag in the prior art, the following defects exist: 1. because the wind speed of the wind distribution plate area is too high, particles can be carried into the hot air flue, and the subsequent treatment of slag particles is troublesome; 2. the specific gravity of radiant heat is higher when the slag is air quenched and granulated, the heat loss waste of the part is serious, and the waste heat utilization efficiency is low.
In view of the above-mentioned problems, the present inventors have made reasonable improvements, and the technical solutions to be described below are based on this premise.
[ Invention ]
In order to solve the problem that when the waste heat of slag is recovered by adopting an air quenching method in the prior art, the wind speed of an air distribution plate area is too high and particles can be carried into a hot air flue, the application provides the slag split-flow heat exchange device which can split the air flow before entering the air distribution plate area and avoid the wind speed of the air distribution plate area from being too high.
The application adopts the technical scheme for solving the technical problems:
the slag split-flow heat exchange device comprises a closed shell, wherein a slag collecting chamber is arranged in the closed shell, a heat exchange material bed used for bearing and conveying slag is arranged in the slag collecting chamber, an air distribution plate is arranged above the heat exchange material bed, the slag collecting chamber comprises a heat exchange cavity positioned above the air distribution plate, a split-flow cavity is arranged on the inner side of the side wall of the closed shell, a heat storage structure used for absorbing radiant heat of slag is arranged at the upper end of the air distribution plate, a channel used for communicating the heat exchange cavity with the split-flow cavity is arranged on the heat storage structure, and an air hole used for communicating the slag collecting chamber with the split-flow cavity is arranged at the lower end of the air distribution plate.
The slag split-flow heat exchange device is characterized in that the air supply device capable of blowing cooling air flow into the bottom of the heat exchange material bed is fixed on the closed shell, the cooling air flow enters the split-flow cavity through the air hole, passes through the heat storage structure and simultaneously carries heat into the heat exchange cavity.
The slag split-flow heat exchange device comprises the first-stage heat exchange material bed which is obliquely arranged, the feeding end is high, the discharging end is low, and the bottom of the first-stage heat exchange material bed is provided with the vent holes which can be introduced with cooling air flow to blow slag to float and move towards the discharging end.
The slag split-flow heat exchange device comprises a plurality of first slag guide plates which are arranged in a cascade manner and are downwards stacked in sequence, gaps are arranged between the adjacent first slag guide plates, the gaps form the ventilation holes, and projections of adjacent ends of the adjacent first slag guide plates in the vertical direction are overlapped.
The slag split-flow heat exchange device comprises the first-stage heat exchange material bed, wherein the first-stage heat exchange material bed is arranged below the slag split-flow heat exchange material bed, the upper end of the first-stage heat exchange material bed is arranged at the lower end of the slag split-flow heat exchange material bed, the first-stage heat exchange material bed comprises a plurality of first slag guide plates which are arranged in a step-shaped mode in a downward lamination mode in sequence, gaps are formed between every two adjacent first slag guide plates, and projections of adjacent ends of the adjacent first slag guide plates in the vertical direction overlap.
The slag split-flow heat exchange device is characterized in that the feeding end of the first-stage heat exchange material bed is provided with a blanking bin communicated with the feeding end of the first-stage heat exchange material bed for conveying slag to the feeding end of the first-stage heat exchange material bed, and the discharging end of the second-stage heat exchange material bed is provided with a receiving bin communicated with the feeding end of the second-stage heat exchange material bed for collecting slag.
The slag split-flow heat exchange device comprises the cooling air pipe arranged at the bottom of the outer end of the second-stage heat exchange material bed, a nozzle capable of blowing cooling air flow into the bottom of the second slag guide plate is arranged on the cooling air pipe, the air supply device further comprises a first-stage slag blowing pipe and a second-stage slag blowing pipe, the first-stage slag blowing pipe is arranged at the lower end of the blanking bin, and the nozzle inserted into the lower end of the blanking bin is arranged on the first-stage slag blowing pipe; the second-stage slag blowing pipe is fixed on the airtight shell, and a nozzle inserted into the second-stage heat exchange material bed is arranged on the second-stage slag blowing pipe.
According to the slag split-flow heat exchange device, the plurality of air distribution plates are arranged, and the plurality of air distribution plates are uniformly distributed and arranged above the first-stage heat exchange material bed at intervals.
Compared with the prior art, the application has the beneficial effects that the diversion cavity is additionally arranged on the inner side of the side wall of the closed shell, the lower end of the air distribution plate is provided with the air hole communicated with the diversion cavity and the slag collecting chamber, the upper end of the air distribution plate is also provided with the heat storage structure for absorbing the radiant heat of slag, the heat storage structure is provided with the channel communicated with the diversion cavity and the heat exchange cavity, the air flow passes through the rear part of the heat exchange material bed to directly exchange heat for slag staying on the air distribution plate once, and the heat enters the main flue port through the heat exchange cavity; part of the heat enters the split flow cavity through the air hole, passes through the channel and simultaneously carries heat into the heat exchange cavity, so that secondary heat exchange is completed; the cooling air flow before entering the air distribution plate area is split by the split flow cavity, so that the overhigh wind speed in the air distribution plate area can be avoided, particles are carried into the hot air flue, the heat storage structure can be used for absorbing radiant heat generated during slag granulation, and meanwhile, the cooling air flow passing through the split flow cavity carries part of heat into the heat exchange cavity, so that the waste heat recovery and utilization efficiency is high.
[ Description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the flow diversion chamber of the present application;
FIG. 2 is a schematic structural view of a slag diverting heat exchanger of the present application;
Fig. 3 is an enlarged schematic view of fig. 2.
[ Detailed description ] of the invention
The application will be further described with reference to the accompanying drawings and specific examples.
As shown in fig. 1 to 3, a slag diverting and heat exchanging device comprises a closed shell 1, wherein a slag collecting chamber is arranged in the closed shell 1, and the slag diverting and heat exchanging device is characterized in that: the heat exchange material bed 2 used for bearing and conveying slag is arranged in the slag collection chamber, the air distribution plate 3 is arranged above the heat exchange material bed 2, the slag collection chamber comprises a heat exchange cavity 11 positioned above the air distribution plate, a diversion cavity 12 is arranged on the inner side of the side wall of the airtight shell 1, a heat storage structure 4 used for absorbing radiant heat of slag is arranged at the upper end of the air distribution plate 3, a channel 41 used for communicating the heat exchange cavity with the diversion cavity is arranged on the heat storage structure, and an air hole 42 used for communicating the slag collection chamber with the diversion cavity 12 is formed in the lower end of the air distribution plate 3. Specifically, the heat storage structure adopts porous heat storage bricks commonly used in the prior art.
In the embodiment, a diversion cavity is additionally arranged on the inner side of the side wall of the airtight shell, an air hole which is communicated with the diversion cavity and the slag collecting chamber is arranged at the lower end of the air distribution plate, a heat storage structure which is used for absorbing the radiant heat of slag is further arranged at the upper end of the air distribution plate, a channel which is communicated with the diversion cavity and the heat exchange cavity is arranged on the heat storage structure, the air flow passes through the rear part of the heat exchange material bed to directly exchange heat once to slag which stays on the air distribution plate, and the heat enters the main flue port through the heat exchange cavity; part of the heat enters the split flow cavity through the air hole, passes through the channel and simultaneously carries heat into the heat exchange cavity, so that secondary heat exchange is completed;
The cooling air flow before entering the air distribution plate area is split by the split flow cavity, so that the overhigh wind speed in the air distribution plate area can be avoided, particles are carried into the hot air flue, the porous heat storage bricks can be used for absorbing radiant heat generated during slag granulation, and meanwhile, the cooling air flow passing through the split flow cavity carries part of heat into the heat exchange cavity, so that the waste heat recovery and utilization efficiency is high.
Because the temperature of the molten slag is above 1400 ℃, the specific gravity of radiant heat is higher during granulation, porous heat storage bricks are designed on the side wall of a slag granulating flight area for recovering part of heat as much as possible, part of cooling air is introduced into the heat storage brick area before an air distribution plate to recover the radiant heat, and meanwhile, the condition that the air speed of the air distribution plate area is too high to carry particles into a hot air flue is avoided.
And an air supply device capable of blowing cooling air flow into the bottom of the heat exchange material bed is fixed on the closed shell and can be used for providing cooling air flow to recycle slag waste heat. Specifically, the air supply device comprises a cooling air pipe 5 fixed on the closed shell 1, and a nozzle capable of blowing cooling air flow into the bottom of the heat exchange material bed is arranged on the cooling air pipe. Cooling air flow blown out from a nozzle of the cooling air pipe enters from the bottom of the heat exchange material bed, and cooling and heat exchange are carried out on slag. In the embodiment, part of air flow directly cools slag on the air distribution plate, part of air flow is introduced into the heat storage brick area through the air holes, radiant heat is recovered, and waste heat utilization efficiency is high.
The heat exchange material bed 2 comprises a first-stage heat exchange material bed 21 which is obliquely arranged and has a high feeding end and a low discharging end, and a second-stage heat exchange material bed 22 which is arranged at the lower end of the first-stage heat exchange material bed, and a vent hole which can be introduced with cooling air flow to blow and float slag and move towards the discharging end is arranged at the bottom of the first-stage heat exchange material bed. Specifically, the first stage heat exchange material bed 21 includes a plurality of first slag guide plates 211 that are stacked downward in a step-like manner, a gap is provided between adjacent first slag guide plates, the gap forms the ventilation hole, and projections of adjacent ends of adjacent first slag guide plates in a vertical direction overlap; the second-stage heat exchange material bed 22 comprises a plurality of second slag guide plates 221 which are arranged in a cascade manner and are downwards stacked in sequence, gaps are arranged between adjacent second slag guide plates, and projections of adjacent ends of the adjacent second slag guide plates in the vertical direction are overlapped. The slag is beneficial to sliding down the lower-stage material bed, meanwhile, the slag is prevented from directly entering the lower-stage heat exchange material bed without heat exchange, cooling air flows through gaps between adjacent first slag guide plates to blow and float the slag on the first slag guide plates to form a floating bed and move downwards to form a moving bed, and the moving speed and thickness of the slag can be controlled through the adjustment of air quantity and air pressure, so that the efficiency of slag waste heat recovery is improved. Of course, the first-stage heat exchange material bed in this embodiment is not limited to the above structure, for example, in a specific implementation, the heat exchange material bed may be a heat exchange material plate that is obliquely arranged in a whole, the ventilation holes are a plurality of heat exchange holes that are uniformly distributed at intervals and are arranged on the heat exchange material plate, and the heat exchange holes are obliquely arranged and the oblique direction of the heat exchange holes is opposite to the arrangement direction of the heat exchange material plate.
Further, the feeding end of the first-stage heat exchange material bed is provided with a blanking bin 23 communicated with the feeding end of the first-stage heat exchange material bed and used for conveying slag to the feeding end of the first-stage heat exchange material bed, and the discharging end of the second-stage heat exchange material bed is provided with a receiving bin 24 communicated with the feeding end of the second-stage heat exchange material bed and used for collecting slag. Specifically, the blanking bin 23, the first heat exchange material bed 21, the second heat exchange material bed 22 and the receiving bin 24 are sequentially connected from top to bottom, the cooling air pipe is arranged at the bottom of the outer end of the second stage heat exchange material bed, and cooling air flow blown out by the nozzle of the cooling air pipe enters from the bottom of the second slag guide plate to cool and exchange heat with slag on the second slag guide plate. The air supply device further comprises a first-stage slag blowing pipe and a second-stage slag blowing pipe, the first-stage slag blowing pipe is provided with a nozzle inserted into the lower end of the blanking bin, and the second-stage slag blowing pipe is provided with a nozzle inserted into the second-stage heat exchange material bed. The hot gas that produces of slag on the second slag guide plate after the cooling air treatment gets into the air distribution plate region from the bottom of first slag guide plate, and the first level blows the slag pipe and can prevent the slag of blanking storehouse from blockking up the blanking storehouse, and the slag of being convenient for removes, and the same reason, the second level blows the slag pipe and can prevent that the slag from blockking up the second level blanking storehouse.
Slag in the blanking bin enters a heat exchange material bed through distribution, the bottom of the material bed is high-temperature-resistant high-strength refractory material, two ends of the material bed are fixed on a wall to form a step-shaped slag guide plate, cooling air passes through the bottom of the second slag guide plate to exchange heat with slag, the slag enters a next-stage collecting bin through multistage heat exchange, movement and re-heat exchange, and the movement speed and thickness of the slag are controlled through adjustment of cooling air quantity and air pressure, so that the efficiency of slag waste heat recovery is improved.
The upper side of the first-stage heat exchange material bed 21 is provided with a plurality of air distribution plates 3 which are uniformly distributed at intervals, one end of each air distribution plate is bent towards the middle of the blanking bin, the other end of each air distribution plate extends downwards towards one side of the first-stage heat exchange material bed, and gaps for air flow to pass through are formed between the adjacent air distribution plates. High-temperature molten slag is blown into the slag collecting chamber through compressed air flow, high-speed air is blown to the slag collecting chamber through the air distribution plate, the air flow speed of the air distribution plate gap is high, leakage of slag can not be caused, and even a small amount of leakage does not affect use.
The foregoing description of the preferred embodiments of the present application is not intended to limit the scope of the application, but rather is presented in the claims.
Claims (6)
1. The slag split-flow heat exchange device comprises a closed shell (1), wherein a slag collecting chamber is arranged in the closed shell, and the slag split-flow heat exchange device is characterized in that: the slag collecting chamber is internally provided with a heat exchange material bed (2) for bearing and conveying slag, an air distribution plate (3) is arranged above the heat exchange material bed, the slag collecting chamber comprises a heat exchange cavity (11) positioned above the air distribution plate (3), a diversion cavity (12) is arranged on the inner side of the side wall of the airtight shell, the upper end of the air distribution plate (3) is provided with a heat storage structure (4) for absorbing slag radiant heat, the heat storage structure is provided with a channel (41) for communicating the heat exchange cavity with the diversion cavity, and the lower end of the air distribution plate (3) is provided with an air hole (42) for communicating the slag collecting chamber with the diversion cavity (12);
The heat exchange material bed (2) comprises a first-stage heat exchange material bed (21) which is obliquely arranged and has a high feeding end and a low discharging end, and a second-stage heat exchange material bed (22) which is arranged below the first-stage heat exchange material bed (21), wherein the upper end of the second-stage heat exchange material bed is arranged at the lower end of the first-stage heat exchange material bed, and the bottom of the first-stage heat exchange material bed is provided with a vent hole which can be introduced with cooling air flow to blow slag to float and move towards the discharging end;
The first-stage heat exchange material bed (21) comprises a plurality of first slag guide plates (211) which are arranged in a step-shaped and downward lamination mode in sequence, gaps are arranged between the adjacent first slag guide plates, the gaps form the ventilation holes, and projections of adjacent ends of the adjacent first slag guide plates in the vertical direction are overlapped.
2. The slag diverting heat exchange apparatus according to claim 1, wherein: an air supply device capable of blowing cooling air flow into the bottom of the heat exchange material bed (2) is fixed on the closed shell (1).
3. The slag diverting heat exchange arrangement according to claim 2, characterized in that: the second-stage heat exchange material bed (22) comprises a plurality of second slag guide plates (221) which are arranged in a cascade manner and are downwards stacked in sequence, gaps are arranged between adjacent second slag guide plates, and projections of adjacent ends of the adjacent second slag guide plates in the vertical direction are overlapped.
4. A slag diverting heat exchange arrangement according to claim 3, characterized in that: the feeding end of the first-stage heat exchange material bed (21) is provided with a blanking bin (23) communicated with the feeding end of the first-stage heat exchange material bed and used for conveying slag to the feeding end, and the discharging end of the second-stage heat exchange material bed (22) is provided with a receiving bin (24) communicated with the discharging end of the second-stage heat exchange material bed and used for collecting slag.
5. The slag diverting heat exchange apparatus according to claim 4, wherein: the air supply device comprises a cooling air pipe (5) arranged at the bottom of the outer end of the second-stage heat exchange material bed, a nozzle capable of blowing cooling air flow into the bottom of the second slag guide plate (221) is arranged on the cooling air pipe, the air supply device further comprises a first-stage slag blowing pipe (6) and a second-stage slag blowing pipe (7), the first-stage slag blowing pipe (6) is arranged at the lower end of the blanking bin (23), and the nozzle inserted into the lower end of the blanking bin is arranged on the first-stage slag blowing pipe; the second-stage slag blowing pipe (7) is fixed on the airtight shell (1), and a nozzle inserted into the second-stage heat exchange material bed is arranged on the second-stage slag blowing pipe.
6. The slag diverting heat exchange apparatus according to claim 1, wherein: the air distribution plates (3) are arranged at intervals and are arranged above the first-stage heat exchange material bed (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711166940.8A CN107806771B (en) | 2017-11-21 | 2017-11-21 | Slag split-flow heat exchange device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711166940.8A CN107806771B (en) | 2017-11-21 | 2017-11-21 | Slag split-flow heat exchange device |
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| Publication Number | Publication Date |
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| CN107806771A CN107806771A (en) | 2018-03-16 |
| CN107806771B true CN107806771B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711166940.8A Active CN107806771B (en) | 2017-11-21 | 2017-11-21 | Slag split-flow heat exchange device |
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| CN (1) | CN107806771B (en) |
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| GB1402543A (en) * | 1971-06-21 | 1975-08-13 | Boland K M V | Methods for passing gases through discrete solids and through liquids |
| JPH06238490A (en) * | 1993-02-16 | 1994-08-30 | Hitachi Kiden Kogyo Ltd | Dehydrating method for screen dregs |
| CN105567890A (en) * | 2015-12-21 | 2016-05-11 | 重庆大学 | Combined fluidized bed type gas-solid heat exchange device utilizing waste heat of furnace slag |
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| CN106636502A (en) * | 2017-03-15 | 2017-05-10 | 湖南思为能源环保工程有限公司 | Waste heat recovery device for high-temperature slag wind quenching granulation fluidized bed boiler |
| CN107287370A (en) * | 2017-06-14 | 2017-10-24 | 东北大学 | Dry granulation reclaims " double to quench " apparatus and method of blast furnace slag waste heat |
| CN207515552U (en) * | 2017-11-21 | 2018-06-19 | 中山蓝冰节能环保科技有限公司 | Clinker shunts heat-exchanger rig |
-
2017
- 2017-11-21 CN CN201711166940.8A patent/CN107806771B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1402543A (en) * | 1971-06-21 | 1975-08-13 | Boland K M V | Methods for passing gases through discrete solids and through liquids |
| JPH06238490A (en) * | 1993-02-16 | 1994-08-30 | Hitachi Kiden Kogyo Ltd | Dehydrating method for screen dregs |
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| CN205999400U (en) * | 2016-08-31 | 2017-03-08 | 中钢集团鞍山热能研究院有限公司 | A kind of converter melts red slag heat recovering device |
| CN106636502A (en) * | 2017-03-15 | 2017-05-10 | 湖南思为能源环保工程有限公司 | Waste heat recovery device for high-temperature slag wind quenching granulation fluidized bed boiler |
| CN107287370A (en) * | 2017-06-14 | 2017-10-24 | 东北大学 | Dry granulation reclaims " double to quench " apparatus and method of blast furnace slag waste heat |
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