CN108168324B - Sintering flue gas circulation flow equalizing cover and sintering system - Google Patents
Sintering flue gas circulation flow equalizing cover and sintering system Download PDFInfo
- Publication number
- CN108168324B CN108168324B CN201810019567.1A CN201810019567A CN108168324B CN 108168324 B CN108168324 B CN 108168324B CN 201810019567 A CN201810019567 A CN 201810019567A CN 108168324 B CN108168324 B CN 108168324B
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- China
- Prior art keywords
- flue gas
- sintering
- area
- distribution area
- smoke
- 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.)
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Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 145
- 239000003546 flue gas Substances 0.000 title claims abstract description 145
- 238000005245 sintering Methods 0.000 title claims abstract description 62
- 239000000779 smoke Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000002829 reductive effect Effects 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000003517 fume Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002918 waste heat 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
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
-
- 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)
- General Engineering & Computer Science (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a sintering flue gas circulation flow equalizing cover and a sintering system, wherein the flow equalizing cover comprises a flue gas distribution area, a flue gas diversion area and a flue gas receiving area which are sequentially communicated from top to bottom, the middle part of the flue gas distribution area is communicated with a flue gas inlet pipeline, the flue gas distribution area comprises a first section and a second section which are symmetrical with each other about the middle position of the flue gas distribution area, the cross section sizes of the first section and the second section are gradually reduced along the direction away from the middle position of the flue gas distribution area, a plurality of vertical plates which can enable flue gas to vertically flow downwards are arranged in the flue gas diversion area, and an opening leading to the material surface of a sintering trolley is arranged at the bottom of the flue gas receiving area. The invention optimizes the structures of the smoke distribution area and the smoke diversion area, and the smoke reaches the smoke receiving area after passing through the pressure equalization and diversion areas, so that the smoke can flow uniformly on the trolley surface, the phenomenon of uneven airflow in the cover is avoided, the smoke is stably sent out, and conditions are created for stably absorbing the smoke by the sintering material.
Description
Technical Field
The invention relates to the technical field of sintering flue gas circulation equipment, in particular to a sintering flue gas circulation flow equalizing cover and a sintering system using the same.
Background
The sintering flue gas circulation is one of important technologies for utilizing waste heat of a sintering process, and is an energy-saving technology for recycling part of hot flue gas of a sintering large flue back to a trolley material surface. The upper fume hood of the trolley is an important part of sintering fume circulation and has the function of a device for returning the sintering fume conveyed by a pipeline to the material surface of the sintering trolley. At present, the general shape of the fume hood is a dome shape, the fume hood is arranged at the upper part of the trolley, the fume is conveyed into the fume hood by a pipeline, the fume is in a jet flow state, the attenuation speed of the jet flow is related to the diameter of the pipeline and the flow velocity of the pipeline, and generally, the larger the diameter of the pipeline is, the slower the flow velocity is attenuated; the higher the flow rate, the slower the flow rate decay. If the flow rate is slow, the distance from high to low is longer, the size in the cover is limited, uneven flow field in the cover is caused, the pressure of flue gas in partial area of the cover is high, the flue gas overflows, the pressure of some parts is low, and the air quantity is insufficient.
Disclosure of Invention
The invention aims to provide a sintering flue gas circulation flow equalizing cover, which solves the problems that the flow field in the existing flue gas cover is uneven and the supply of flue gas overflow is insufficient.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows: the utility model provides a sintering flue gas circulation cover that flow equalizes, includes from top to bottom in proper order the flue gas distribution district, flue gas water conservancy diversion district and flue gas receiving area that communicates, the middle part and the flue gas admission line in flue gas distribution district are linked together, the flue gas distribution district includes first section and the second section of symmetry about its intermediate position, the cross sectional dimension of first section and second section is followed and is kept away from the direction of flue gas distribution district intermediate position reduces gradually, be equipped with a plurality of risers that can make the flue gas flow downwards perpendicularly in the flue gas water conservancy diversion district, the bottom in flue gas receiving area is equipped with the opening that leads to the sintering platform truck charge level.
According to the sintering flue gas circulation flow equalizing cover provided by the invention, the structure of the flue gas distribution area is designed and optimized, so that the flue gas can enter the flue gas distribution area to maintain the same static pressure along the length direction of the distribution area, the air flow is uniformly distributed in the length direction of the flue gas distribution area, and the vertical plates are arranged in the flue gas diversion area, so that the flue gas horizontally flowing in the distribution area can be changed into vertical downward flowing after entering the flue gas diversion area, the transverse turbulence in the cover is avoided, the flue gas reaches the flue gas receiving area after being equalized and guided by the structure, the uniform flow of the flue gas in the trolley is ensured, the phenomenon of nonuniform air flow in the cover is avoided, the flue gas is stably sent out, the condition is created for stably absorbing the flue gas by the sintering material, and the problem of nonuniform flow field in the cover is avoided.
In addition, the sintering flue gas circulation flow equalizing cover according to the embodiment of the invention can also have the following additional technical characteristics:
according to one example of the invention, the lower part of the flue gas distribution area is provided with a constriction part with gradually reduced horizontal width, and the constriction part is communicated with the flue gas diversion area.
According to one example of the invention, the plurality of risers includes a first riser and a second riser perpendicular to each other, wherein the first riser is disposed along a length of the flue gas diversion area.
According to an example of the present invention, one of the first risers is installed at the middle of the smoke guiding zone, and the plurality of second risers are uniformly spaced.
According to an example of the present invention, the horizontal width of the flue gas guiding zone and/or the flue gas receiving zone increases gradually from top to bottom.
According to one example of the invention, the device comprises a top plate and side plates on two sides of the top plate, wherein the upper part of the top plate and the two side plates enclose a smoke distribution area, the middle parts of the two side plates enclose a smoke diversion area, the lower parts of the two side plates enclose a smoke receiving area, and a plurality of reinforcing rib plates which are distributed at intervals along the length direction of the sintering smoke circulation flow equalizing cover are arranged on the outer walls of the top plate and the side plates.
According to one example of the invention, the lower part of the side plate is provided with at least one access hole, and an openable door body is arranged at the access hole.
The second object of the invention is to provide a sintering system, which comprises a flue gas inlet pipeline, a sintering trolley and at least one sintering flue gas circulation flow equalizing cover, wherein the sintering flue gas circulation flow equalizing cover is arranged above the sintering trolley, and the flue gas inlet pipeline is communicated with the sintering flue gas circulation flow equalizing cover.
According to an example of the invention, the flue gas inlet duct is a horizontal duct.
The advantages of the above additional aspects will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a top view of a sintering flue gas circulation flow straightener in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a section B-B of FIG. 2;
in the drawings, the list of components represented by the various numbers is as follows:
1. a top plate; 2. a side plate; 3. a flue gas distribution area; 301. a first section; 302. a second section; 303. an opening; 4. a flue gas diversion area; 5. a flue gas receiving zone; 6. a flue gas inlet duct; 7. a flue gas inlet; 8. a riser; 9. sintering trolley; 10. a material surface; 11. reinforcing rib plates; 12. a support frame; 13. a door body.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
Example 1
Referring to fig. 1-3, this embodiment provides a sintering flue gas circulation flow equalizing cover, the flow equalizing cover is an upper end closed lower end open structure, the flow equalizing cover includes at least one flow equalizing cover unit with a certain structural length, this embodiment is three flow equalizing cover units, the flow equalizing cover unit is composed of a top plate 1 and side plates 2 on two sides of the top plate 1, the upper portion of the top plate 1 and the two side plates 2 enclose a flue gas distribution area 3, the middle portions of the two side plates enclose a flue gas diversion area 4, the lower portions enclose a flue gas receiving area 5, the flue gas distribution area 3, the flue gas diversion area 4 and the flue gas receiving area 5 are sequentially communicated from top to bottom, the width of the flue gas distribution area 3 is smaller than the width of a sintering trolley, so as to achieve the primary increase of flow velocity attenuation rate, a flue gas inlet 7 communicated with a flue gas inlet pipe 6 is formed in the middle portion of the flue gas distribution area 3, and the flue gas inlet 7 is in particular flange connection with the flue gas inlet pipe 6. The flue gas distribution area 3 comprises a first section 301 and a second section 302 which are symmetrical with respect to the middle position, and the cross-sectional dimensions of the first section 301 and the second section 302 gradually decrease along the direction away from the middle position of the flue gas distribution area 301, and it should be noted that the "middle" and the "middle" refer to the middle positions which are distinguished along the length direction (i.e. the "left-right" direction in the figure) of the flow equalization cover, and the "cross-section" refers to the cross-section perpendicular to the length direction. Through the structure, when the flue gas enters the flue gas distribution area 3 through the flue gas inlet 7, the first section 301 and the second section 302 are of variable cross-section design, so that the flue gas can maintain the same static pressure in the distribution area 3 along the length direction of the distribution area, and the air flow is uniformly distributed in the length direction of the flue gas distribution area.
Furthermore, in this embodiment, a plurality of vertical plates 8 are disposed in the flue gas guiding area 4 to enable the flue gas to flow vertically downwards, and openings leading to the material surface 10 of the sintering pallet 9 are disposed at the bottom of the flue gas receiving area 5. According to the embodiment, the structural design optimization is carried out on the smoke diversion area 4, the vertical plate 8 is arranged in the smoke diversion area 4, so that smoke horizontally flowing in the distribution area can be changed into vertical downward flowing after entering the smoke diversion area, transverse turbulence is avoided in the cover, the smoke reaches the smoke receiving area after being subjected to pressure equalizing and diversion through the structure, the smoke can be ensured to uniformly flow on the trolley, the phenomenon of nonuniform airflow in the cover is avoided, the smoke is stably sent out, and conditions are created for stably absorbing the smoke by sintering materials.
Preferably, in this embodiment, the lower portion of the flue gas distribution area 3 is provided with an opening 303 with a constant horizontal width, the opening 303 is communicated with the flue gas guiding area 4, and the static pressure of flue gas in the distribution area along the length direction can be ensured to be basically constant by the structure formed by the distribution area 3 with a gradually contracted cross section in the length direction and the opening 303 with a constant width at the lower portion, so that the air flow can be kept uniform and stable when entering the flue gas guiding area 4.
Preferably, the plurality of risers 8 of this embodiment include perpendicular first riser and second riser, wherein, first riser sets up along the length direction of flue gas guiding district 4, the length of first riser and the length looks adaptation of flue gas guiding district 3, first riser and second riser can separate the air current into a plurality of regions, further avoid producing horizontal and vertical turbulence in the cover, more preferably, first riser quantity of this embodiment is one, it installs on the intermediate position of flue gas guiding district 4, this "intermediate position" refers to the intermediate position that flue gas guiding district 4 inside its width direction (i.e. "fore-and-aft" direction in the drawing) distinguished, and a plurality of second risers evenly spaced arrangement is in flue gas guiding district 3, can further guarantee that the air current is even when flue gas in the flue gas guiding district 4 descends to flue gas receiving district 5.
Specifically, in this embodiment, the horizontal widths of the smoke guiding area 4 and the smoke receiving area 5 are designed to gradually increase from top to bottom, that is, the two side plates are designed to be inclined plates, so that the lower opening of the smoke guiding area 4 is adapted to the material surface 10 of the sintering pallet 9.
In addition, this embodiment still installs a plurality of reinforcing rib plates 11 that evenly distribute along sintering flue gas circulation cover length direction that flow equalizes on the outer wall of roof 1 and curb plate 2, and this reinforcing rib plate 11 falls into two kinds, and one kind only plays the effect that improves the structural strength of the cover body, and another kind not only plays the effect that improves structural strength, but also is connected with the support frame 12 of below through connection structure such as bolt to flow equalizing the cover and install in the top of sintering platform truck 9, preferably, two kinds of reinforcing rib plates are crisscross to be laid, have improved holistic structural stability.
In addition, in this embodiment, one or more access holes are further formed in the lower portion of the side plate 2, and an openable door body 13 is installed at the access hole, so that workers can conveniently perform work such as overhaul on the internal structure.
Example two
The embodiment provides a sintering system who contains above-mentioned embodiment, and this system includes flue gas air inlet pipe 6, sintering platform truck 9 and sintering flue gas circulation cover that flow equalizes, the sintering flue gas circulation cover that flow equalizes is installed the top of sintering platform truck 9, flue gas air inlet pipe 6 with sintering flue gas circulation cover that flow equalizes is linked together, and this flue gas air inlet pipe 6 has three spinal branch pipes, and every leg joint has foretell a cover unit that flow equalizes, can distribute the air current in advance in flue gas air inlet pipe 6, also can play the effect of reducing distribution area 3 size.
By adopting the sintering system of the embodiment, the smoke of the smoke inlet pipeline reaches the smoke receiving area after being subjected to pressure equalization and flow guide through the flow equalization cover structure, so that the smoke can be ensured to flow uniformly on the trolley surface, the phenomenon of nonuniform airflow in the cover is avoided, the smoke is stably sent out, conditions are created for stably absorbing the smoke by the sintering material, the problem of nonuniform flow field in the cover is avoided, and the working efficiency of the sintering system is improved.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (5)
1. The utility model provides a sintering flue gas circulation flow equalizing cover which is characterized in that the sintering flue gas circulation flow equalizing cover comprises a flue gas distribution area (3), a flue gas diversion area (4) and a flue gas receiving area (5) which are sequentially communicated from top to bottom, the middle part of the flue gas distribution area (3) is communicated with a flue gas inlet pipeline (6), the flue gas distribution area (3) comprises a first section (301) and a second section (302) which are symmetrical relative to the middle part of the flue gas distribution area, the cross section sizes of the first section (301) and the second section (302) are gradually reduced along the direction far away from the middle position of the flue gas distribution area (3), a plurality of vertical plates (8) which can enable flue gas to vertically flow downwards are arranged in the flue gas diversion area (4), and the bottom of the flue gas receiving area (5) is provided with an opening which leads to a material surface (10) of a sintering trolley (9);
an opening (303) with constant horizontal width is arranged at the bottom of the flue gas distribution area (3), and the opening (303) is communicated with the flue gas diversion area (4);
the plurality of vertical plates (8) comprise a first vertical plate and a second vertical plate which are perpendicular to each other, wherein the first vertical plates are arranged along the length direction of the flue gas diversion area;
the first vertical plates are arranged in the middle of the smoke diversion area, and the second vertical plates are uniformly distributed at intervals;
the horizontal width of the flue gas diversion area (4) and/or the flue gas receiving area (5) is gradually increased from top to bottom;
the width of the flue gas distribution area is smaller than that of the sintering trolley;
a flue gas inlet communicated with a flue gas inlet pipeline is formed in the middle of the flue gas distribution area, and the flue gas inlet is specifically connected with the flue gas inlet pipeline in a flange manner;
the length of first riser and the length looks adaptation of flue gas water conservancy diversion district, and first riser and second riser divide into a plurality of regions with the air current.
2. The sintering flue gas circulation flow equalizing cover according to claim 1, comprising a top plate (1) and side plates (2) on two sides of the top plate (1), wherein the upper part of the top plate (1) and the two side plates (2) enclose a flue gas distribution area (3), the middle parts of the two side plates (2) enclose a flue gas diversion area (4), the lower parts of the two side plates enclose a flue gas receiving area (5), and a plurality of reinforcing rib plates (11) distributed at intervals along the length direction of the sintering flue gas circulation flow equalizing cover are arranged on the outer walls of the top plate (1) and the side plates (2).
3. The sintering flue gas circulation flow equalizing cover according to claim 2, wherein the lower part of the side plate (2) is provided with at least one access hole, and an openable door body (13) is arranged at the access hole.
4. A sintering system, characterized by comprising a flue gas inlet pipe (6), a sintering trolley (8) and at least one sintering flue gas circulation flow equalizing cover according to any one of claims 1-3, wherein the sintering flue gas circulation flow equalizing cover is arranged above the sintering trolley (8), and the flue gas inlet pipe (6) is communicated with the sintering flue gas circulation flow equalizing cover.
5. Sintering system according to claim 4, characterized in that the flue gas inlet duct (6) is a horizontal duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019567.1A CN108168324B (en) | 2018-01-09 | 2018-01-09 | Sintering flue gas circulation flow equalizing cover and sintering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810019567.1A CN108168324B (en) | 2018-01-09 | 2018-01-09 | Sintering flue gas circulation flow equalizing cover and sintering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108168324A CN108168324A (en) | 2018-06-15 |
| CN108168324B true CN108168324B (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810019567.1A Active CN108168324B (en) | 2018-01-09 | 2018-01-09 | Sintering flue gas circulation flow equalizing cover and sintering system |
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| Country | Link |
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| CN (1) | CN108168324B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608618A (en) * | 2019-10-14 | 2019-12-24 | 中国科学院过程工程研究所 | External support type sintering flue gas circulation sealing device and stacking method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201058284Y (en) * | 2007-06-21 | 2008-05-14 | 山东大学 | Venturi tube fluidizer with adjustable load |
| CN102052701A (en) * | 2011-01-20 | 2011-05-11 | 毛学东 | Upwind cone-shaped full air curtain split type injection range hood |
| CN103574570A (en) * | 2013-10-31 | 2014-02-12 | 安徽海螺川崎节能设备制造有限公司 | Novel heat recovery boiler of cement kiln head |
| KR20170091212A (en) * | 2016-01-29 | 2017-08-09 | 주식회사 포스코 | Gas supply device and apparatus for manufacturing sintered ore with the same |
| CN207797770U (en) * | 2018-01-09 | 2018-08-31 | 中钢集团工程设计研究院有限公司 | A kind of sintering flue gas cycle stream cover and sintering system |
-
2018
- 2018-01-09 CN CN201810019567.1A patent/CN108168324B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201058284Y (en) * | 2007-06-21 | 2008-05-14 | 山东大学 | Venturi tube fluidizer with adjustable load |
| CN102052701A (en) * | 2011-01-20 | 2011-05-11 | 毛学东 | Upwind cone-shaped full air curtain split type injection range hood |
| CN103574570A (en) * | 2013-10-31 | 2014-02-12 | 安徽海螺川崎节能设备制造有限公司 | Novel heat recovery boiler of cement kiln head |
| KR20170091212A (en) * | 2016-01-29 | 2017-08-09 | 주식회사 포스코 | Gas supply device and apparatus for manufacturing sintered ore with the same |
| CN207797770U (en) * | 2018-01-09 | 2018-08-31 | 中钢集团工程设计研究院有限公司 | A kind of sintering flue gas cycle stream cover and sintering system |
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| Publication number | Publication date |
|---|---|
| CN108168324A (en) | 2018-06-15 |
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