CN110437851B - Dry quenching furnace chute structure - Google Patents
Dry quenching furnace chute structureInfo
- Publication number
- CN110437851B CN110437851B CN201910815130.3A CN201910815130A CN110437851B CN 110437851 B CN110437851 B CN 110437851B CN 201910815130 A CN201910815130 A CN 201910815130A CN 110437851 B CN110437851 B CN 110437851B
- Authority
- CN
- China
- Prior art keywords
- wall
- bracket
- chute
- dividing wall
- dry quenching
- 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
- 238000010791 quenching Methods 0.000 title claims abstract description 36
- 230000000171 quenching effect Effects 0.000 title claims abstract description 36
- 238000005192 partition Methods 0.000 claims abstract description 36
- 239000011449 brick Substances 0.000 claims description 21
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 abstract description 5
- 239000000571 coke Substances 0.000 description 20
- 239000007789 gas Substances 0.000 description 10
- 238000001816 cooling Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention relates to a chute structure of a dry quenching furnace, which comprises a chute area inner wall, brackets, bracket ring beams and partition walls, wherein the partition walls are provided with 2 layers along the height direction and divide the chute area into 3 parallel airflow channels; the gas flow sectional areas of the gas flow channels are gradually increased from top to bottom, namely the distance A between the bracket ring beam and the upper dividing wall is less than the distance B between the upper dividing wall and the lower dividing wall is less than the distance C between the lower dividing wall and the inner wall of the chute area; the bracket is arranged in a segmented mode, each segment corresponds to an air flow channel with different heights, the thickness of each segment of bracket gradually increases from top to bottom, boss structures are formed at the edges of the adjacent 2 segments of brackets, and two ends of the partition wall are erected on the corresponding boss structures. The invention can effectively improve the processing capacity of the dry quenching furnace, increase the strength of the chute area, realize the positioning and masonry of the dividing wall, and ensure that the dividing wall is firmly fixed and is not easy to fall off.
Description
Technical Field
The invention relates to a dry quenching furnace body structure, in particular to a dry quenching furnace chute structure.
Background
The dry quenching is a quenching method for cooling red Jiao Jiangwen by adopting inert gas relative to the wet quenching. In the dry quenching process, red coke is pushed out of a coke oven carbonization chamber and then is filled into a rotary coke tank, a coke tank truck moves to the lower part of a derrick of a lifting machine, the lifting machine lifts the coke tank to fill the red coke from the top of the dry quenching furnace, low-temperature inert gas is blown into the dry quenching furnace red Jiao Cengna by a circulating fan to absorb red Jiao Xianre, and cooled coke is discharged from the bottom of the dry quenching furnace.
The dry quenching furnace generally adopts a shaft furnace structure with a circular cross section, and is divided into a pre-storing area, an annular air duct area, a chute area and a cooling area from top to bottom. The chute area is positioned at the lower part of the annular air duct area and the upper part of the cooling area, and low-temperature circulating gas entering from the air supply device at the bottom of the coke dry quenching furnace absorbs sensible heat of red coke and then is converged into the annular air duct area through the chute area to be discharged. When circulating gas flows through the cooling section of the dry quenching furnace and enters the annular air duct from the chute area, part of coke at the chute opening is blown up, so that the surface of the coke is lifted, namely the phenomenon of so-called coke floating at the chute opening of the dry quenching furnace occurs. Coke floating is a key factor limiting the processing capacity of the dry quenching furnace, the early dry quenching furnaces are of a single-chute structure, the processing capacity is smaller, and the strength of a chute area is poorer, so that brackets are more fragile in the production process.
For a period of time, researchers at home and abroad have conducted various researches on the chute structure, such as a separation device disclosed in China patent publication No. CN107502375A and a coke dry fire-extinguishing device disclosed in China patent publication No. CN101827915B, the thickness of coke accumulation in the chute area is obviously reduced by arranging a suspended separation device in the chute area, and the resistance of a coke layer is reduced; chinese patent publication No. CN208791553U discloses a "partition type chute device for dry quenching", which uniformly separates the chute area by an arched partition wall, so as to improve the gas flow rate of the chute area, effectively inhibit the floating of coke, and improve the service life of corbels of the chute area. According to the technical scheme disclosed by the above, simulation and semi-industrial experiments show that the effect is not ideal, and the upper part of the suspended separation device is extremely easy to damage after the suspended separation device is used for a period of time; the method of evenly dividing the inclined channels by the arched partition walls leads to uneven gas distribution of the divided upper and lower air channels, no increase of processing capacity, difficult positioning and easy falling off when the inclined arches are built, and insufficient structural strength.
Disclosure of Invention
The invention provides a dry quenching furnace chute structure, which can effectively improve the processing capacity of the dry quenching furnace, increase the strength of a chute area, realize the positioning and masonry of a dividing wall, and ensure that the dividing wall is firmly fixed and is not easy to fall off.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
The dry quenching furnace chute structure comprises a chute area inner wall, brackets, bracket ring beams and partition walls, wherein the partition walls are provided with 2 layers along the height direction and divide the chute area into 3 parallel airflow channels; the gas flow sectional areas of the gas flow channels are gradually increased from top to bottom, namely the distance A between the bracket ring beam and the upper dividing wall is less than the distance B between the upper dividing wall and the lower dividing wall is less than the distance C between the lower dividing wall and the inner wall of the chute area; the brackets are arranged in a segmented mode, each segment corresponds to an air flow channel with different heights, the thickness of each bracket is gradually increased from top to bottom, boss structures are formed at the edges of the adjacent 2 segments of brackets, and two ends of the partition wall are erected on the corresponding boss structures; a sliding structure is arranged between the partition wall and the bracket, and consists of a stainless steel plate and oilpaper.
The bracket ring beam is of a double-layer arched beam structure, namely, consists of 2 layers of arched beams built along the height direction, and each layer of arched beam consists of beam arch foot bricks arranged at two ends and a plurality of beam arch top bricks arranged in the middle.
The partition wall is built by multiple layers of arch walls, two ends of each layer of arch wall are respectively provided with wall arch foot bricks, and the wall arch foot bricks are matched with boss structures on brackets to form surface supports; the middle part of each layer of arch wall is provided with a plurality of wall arch bricks.
Grooves or stepped platform structures are respectively arranged on two sides of each section of bracket, and two sides of the dividing wall are matched with the grooves or the stepped platform structures to realize positioning and supporting.
Compared with the prior art, the invention has the beneficial effects that:
1) The dry quenching chute structure adopts an unequal partition structure, so that the distribution of circulating air flow at the mouth of the dry quenching chute can be effectively regulated, and the problems of local overlarge resistance at the mouth of the chute, high dust content of circulating air and the like caused by uneven distribution of circulating air at the mouth of the chute are avoided;
2) The dry quenching furnace treatment capacity is improved, and the rise of the gas temperature at the inlet of the boiler and the coke discharging temperature can be effectively avoided;
3) The scouring of the medium-sized and small-sized coke brought into the circulating gas to the high-temperature expansion joint, the primary dust remover and the boiler system is avoided;
4) Realizes the positioning and masonry of the dividing wall, ensures that the dividing wall is fixed firmly and is not easy to fall off.
Drawings
Fig. 1 is a schematic structural view of a chute structure of a dry quenching furnace according to the present invention.
Fig. 2 is a D-D view of fig. 1.
In the figure: 1. the inner wall 2 of the inclined channel area, the bracket 21, the upper bracket 22, the middle bracket 23, the lower bracket 3, the bracket ring beam 31, the beam arch foot brick 32, the beam arch top brick 4, the partition wall 41, the upper partition wall 42, the lower partition wall 43, the wall arch foot brick 44, the wall arch top brick 5, the boss structure 6, the groove or step structure 7, the sliding structure
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
As shown in fig. 1 and 2, the chute structure of the dry quenching furnace comprises a chute area inner wall 1, brackets 2, bracket ring 3 beams and a partition wall 4, wherein the partition wall 4 is provided with 2 layers along the height direction and divides the chute area into 3 parallel airflow channels; the gas flow sectional areas of the gas flow channels are gradually increased from top to bottom, namely the distance A between the bracket ring beam 3 and the upper separating wall 41 is smaller than the distance B between the upper separating wall 41 and the lower separating wall 42 is smaller than the distance C between the lower separating wall 42 and the chute area inner wall 1; the brackets 2 are arranged in sections, each section corresponds to an air flow channel with different heights, the thickness of each section of bracket gradually increases from top to bottom, boss structures 5 are formed at the edges of the adjacent 2 sections of brackets, and two ends of the partition wall 4 are erected on the corresponding boss structures 5; a sliding structure 7 is arranged between the partition wall 4 and the bracket 2, and the sliding structure 7 consists of a stainless steel plate and oilpaper.
The bracket ring beam 3 is of a double-layer arched beam structure, namely, is composed of 2 layers of arched beams built along the height direction, and each layer of arched beam is composed of beam arch foot bricks 31 arranged at two ends and a plurality of beam arch top bricks 32 arranged in the middle.
The partition wall 4 is built by a plurality of layers of arch walls, two ends of each layer of arch wall are respectively provided with wall arch foot bricks 43, and the wall arch foot bricks 43 are matched with boss structures 5 on the bracket 2 to form a surface support; a plurality of wall crown blocks 44 are provided in the middle of each layer of arch wall.
Grooves or stepped platform structures 6 are respectively arranged on two sides of each section of bracket 21, 22 and 23, and two sides of the partition wall 4 are matched with the grooves or the stepped platform structures 6 to realize positioning and supporting.
The invention discloses a dry quenching furnace chute structure, which is positioned between a ring-shaped air duct and a cooling area of a dry quenching furnace and comprises a chute area inner wall 1, brackets 2, an upper separating wall 41, a lower separating wall 42 and bracket ring beams 3. The brackets 2 are uniformly distributed along the circumference of the dry quenching furnace, and the brackets 2 are cantilever structures layer by layer along the height direction; the upper partition wall 41 and the lower partition wall 42 are positioned between the adjacent 2 brackets 2, dividing the air flow passage divided by the 2 brackets 2 into upper, middle and lower 3 parallel spaces; the bracket ring beams 3 are positioned at the tops of the adjacent 2 brackets 2 and are connected with the 2 brackets 2; the inner wall 1, the bracket 2, the upper dividing wall 41, the lower dividing wall 42 and the bracket ring beam 3 of the chute area are all built by refractory bricks.
As shown in fig. 1, the bracket 2 is also a cantilever structure, and is divided into 3 sections corresponding to 3 parallel spaces, the width of the upper bracket 21 is smaller than the width of the middle bracket 22, and the width of the middle bracket 22 is smaller than the width of the lower bracket 23, i.e. the dimension H1 < H2 < H3 shown in fig. 1.
Due to the different widths of the legs 21, 22, 23, a boss structure 5 is formed between the adjacent 2 legs, and the boss structure 5 is used for positioning the upper and lower banks 41, 42, i.e. the bottoms of the upper and lower banks 41, 42 are respectively supported on the corresponding boss structure 5.
As shown in fig. 2, the cross-sectional areas of the 3 parallel spaces divided by the upper partition wall 41 and the lower partition wall 42 are not equal, i.e. the chute area is not an equipartition structure, the distance between the bracket ring beam 3 and the upper partition wall 41 is smaller than the distance between the upper partition wall 41 and the lower partition wall 42, the distance between the upper partition wall 41 and the lower partition wall 42 is smaller than the distance between the lower partition wall 42 and the chute area inner wall 1, i.e. the dimension a < B < C shown in fig. 2, so that the lower air volume of the chute area is ensured to be larger than the upper air volume, thereby generating vortex effect, preventing the phenomenon of floating coke at the chute opening, and being beneficial to enhancing the cooling effect of the dry quenching furnace.
As shown in fig. 1, the upper dividing wall 41 and the lower dividing wall 42 are each constructed by combining 3 layers of arch-shaped structural walls, and each layer of arch-shaped structural wall is constructed by constructing a plurality of special-shaped refractory bricks.
Sliding structures 7 for digestion expansion are arranged between the upper dividing wall 41, the lower dividing wall 42 and the bracket 2, and the sliding structures 7 are composed of stainless steel plates and oilpaper.
The bracket ring beam 3 is formed by combining and building double-layer arched structure beams, and each layer of arched structure beam is built by a plurality of special-shaped refractory bricks.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The dry quenching furnace chute structure comprises a chute area inner wall, brackets, bracket ring beams and partition walls, and is characterized in that the partition walls are provided with 2 layers along the height direction to divide the chute area into 3 parallel airflow channels; the gas flow sectional areas of the gas flow channels are gradually increased from top to bottom, namely the distance A between the bracket ring beam and the upper dividing wall is less than the distance B between the upper dividing wall and the lower dividing wall is less than the distance C between the lower dividing wall and the inner wall of the chute area; the brackets are arranged in a segmented mode, each segment corresponds to an air flow channel with different heights, the thickness of each bracket is gradually increased from top to bottom, boss structures are formed at the edges of the adjacent 2 segments of brackets, and two ends of the partition wall are erected on the corresponding boss structures; a sliding structure is arranged between the partition wall and the bracket, and consists of a stainless steel plate and oilpaper.
2. The chute structure of a dry quenching furnace according to claim 1, wherein the bracket ring beam is a double-layer arched beam structure, namely, the bracket ring beam consists of 2 layers of arched beams built along the height direction, and each layer of arched beam consists of beam arch foot bricks arranged at two ends and a plurality of beam arch top bricks arranged in the middle.
3. The dry quenching furnace chute structure according to claim 1, wherein the partition wall is built by a plurality of layers of arch walls, two ends of each layer of arch wall are respectively provided with wall arch foot bricks, and the wall arch foot bricks are matched with boss structures on brackets to form surface supports; the middle part of each layer of arch wall is provided with a plurality of wall arch bricks.
4. The dry quenching furnace chute structure according to claim 1, wherein grooves or stepped platform structures are respectively arranged on two sides of each section of bracket, and two sides of the dividing wall are matched with the grooves or the stepped platform structures to realize positioning and supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815130.3A CN110437851B (en) | 2019-08-30 | Dry quenching furnace chute structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910815130.3A CN110437851B (en) | 2019-08-30 | Dry quenching furnace chute structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110437851A CN110437851A (en) | 2019-11-12 |
| CN110437851B true CN110437851B (en) | 2024-07-09 |
Family
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62250090A (en) * | 1986-04-22 | 1987-10-30 | Nippon Kokan Kk <Nkk> | Coke dry quenching furnace |
| CN103509566A (en) * | 2012-06-20 | 2014-01-15 | 五冶集团上海有限公司 | Overhaul construction method of double chute position of dry quenching furnace |
| CN204039325U (en) * | 2014-07-22 | 2014-12-24 | 通化钢铁股份有限公司 | Chute of dry quenching furnace arch supporting leg |
| CN208791553U (en) * | 2018-08-09 | 2019-04-26 | 西安华江环保科技股份有限公司 | A kind of dry coke quenching cellular-type chute device |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62250090A (en) * | 1986-04-22 | 1987-10-30 | Nippon Kokan Kk <Nkk> | Coke dry quenching furnace |
| CN103509566A (en) * | 2012-06-20 | 2014-01-15 | 五冶集团上海有限公司 | Overhaul construction method of double chute position of dry quenching furnace |
| CN204039325U (en) * | 2014-07-22 | 2014-12-24 | 通化钢铁股份有限公司 | Chute of dry quenching furnace arch supporting leg |
| CN208791553U (en) * | 2018-08-09 | 2019-04-26 | 西安华江环保科技股份有限公司 | A kind of dry coke quenching cellular-type chute device |
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