CN116162473A - Annular air duct with double-layer inner annular wall structure - Google Patents
Annular air duct with double-layer inner annular wall structure Download PDFInfo
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- CN116162473A CN116162473A CN202211614640.2A CN202211614640A CN116162473A CN 116162473 A CN116162473 A CN 116162473A CN 202211614640 A CN202211614640 A CN 202211614640A CN 116162473 A CN116162473 A CN 116162473A
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- air duct
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- 239000011449 brick Substances 0.000 claims abstract description 68
- 238000005192 partition Methods 0.000 claims description 41
- 238000000926 separation method Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 abstract description 16
- 230000000171 quenching effect Effects 0.000 abstract description 16
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000000571 coke Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 208000032912 Local swelling Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 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
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Duct Arrangements (AREA)
Abstract
The utility model relates to an annular air duct with a double-layer inner annular wall structure, which comprises an annular air duct consisting of an inner annular wall and an outer annular wall; the inner annular wall consists of an inner annular wall and an outer annular wall, the inner annular wall and the outer annular wall are of independent structures, staggered joints are built between the inner annular wall and the outer annular wall, and expansion joints or brick joints are arranged between the inner annular wall and the outer annular wall. The inner annular wall of the annular air duct consists of the inner annular wall and the outer inner annular wall which are independent, and the inner annular wall and/or the outer annular wall are/is provided with the arch masonry, the inner annular wall and/or the outer annular wall adopt the snap-in connection structure, and the expansion joints, the sliding joints and the like are arranged at the connection positions, so that the overall strength of the annular air duct is effectively improved, and the service life of the dry quenching furnace is prolonged.
Description
Technical Field
The utility model relates to the technical field of coke dry quenching furnaces, in particular to an annular air duct with a double-layer inner annular wall structure.
Background
The dry quenching technology is an important energy-saving and environment-friendly technology in the metallurgical industry, is obviously superior to wet quenching in the aspects of energy saving, environment protection, coke quality improvement and the like, and brings great economic and social benefits to coking enterprises by popularization and application of the dry quenching technology.
The annular air duct is a very important part in the dry quenching device, is positioned in the middle of the dry quenching furnace, and is arranged on the periphery of the pre-storing area and above the inclined channel area, and is used for collecting the thermal cycle gas passing through the inclined channel from bottom to top. In the existing dry quenching furnace, an annular air duct is an annular cavity formed by combining an inner annular wall and an outer annular wall, one side of the annular air duct is provided with a radial outlet and is correspondingly provided with an outlet partition wall, and the other side of the annular air duct is provided with a partition wall; the inner annular wall is of a cylindrical hollow structure, and in order to ensure that the outlet separating wall and the separating wall do not collapse in the using process, a connecting structure with one end inserted into the inner annular wall is adopted. The wall bricks forming the inner annular wall are wedge-shaped, namely, the inner end is small in size, the outer end is large in size, staggered joints are adopted between the upper layer wall bricks and the lower layer wall bricks, and each brick is loosely matched.
The inner side of the inner annular wall of the annular air duct of the dry quenching furnace is contacted with high-temperature coke, and the outer side of the inner annular wall is contacted with high-temperature circulating gas. The inner ring wall needs to bear the friction and extrusion of coke for a long time, and in addition, the conditions of coke falling impact in the coke loading process, coke lateral pressure in the production process, temperature difference between the inside and outside of the wall, pressure fluctuation, combustion reaction or detonation of combustible components when encountering the introduced supplementary air are added, so that the inner ring wall is extremely easy to crack, and even the phenomena of local swelling and hole penetrating of the inner ring wall occur when serious, thereby reducing the service life of the dry quenching furnace.
Chinese patent application publication No. CN103937512a discloses an "annular duct", in which the inner annular wall is designed as a multi-layer inner wall brick structure, and the strength of the inner annular wall is increased by means of the protrusions and the recesses on the brick body; the Chinese patent with publication number of CN202322725U discloses a dry quenching annular air duct structure, which is provided with a stainless steel hoop and radial support columns at the periphery of an inner annular wall to increase the strength of the wall of the inner annular wall; the Chinese patent with publication number of CN205188203U discloses an annular air duct inner annular wall of a dry quenching device, which increases the strength of the inner annular wall by a concave-convex groove structure between two single bricks; the Chinese patent publication No. CN205740882U discloses an annular air duct for preventing the inner wall from collapsing, wherein a heat-resistant support rod is arranged between the inner annular wall and the outer annular wall; chinese patent application publication No. CN 102888234a discloses a "dry quenching annular duct structure", which sets a ventilation type flower wall between an inner annular wall and an outer annular wall. In the above-mentioned disclosed technology, the brick-type structure forming the inner annular wall is too complex, and there is no expansion joint and other structures, and the protrusion, pit and concave-convex groove structures on the brick body are influenced by structural stress and thermal stress to lower the strength of the masonry, so that the inner annular wall is easy to be damaged at the protrusion, pit and concave-convex groove structures and other positions; the stainless steel hoop and the heat-resistant supporting rod cannot reach the expected strength at all under the high-temperature condition; practice proves that the ventilation type flower wall can greatly influence the treatment capacity of the dry quenching, so that the technical scheme cannot achieve an ideal effect.
Disclosure of Invention
The utility model provides an annular air duct with a double-layer inner annular wall structure, wherein the inner annular wall consists of an inner annular wall and an outer inner annular wall which are independent from each other, and the inner annular wall and/or the outer annular wall are provided with arch brickworks, the inner annular wall and/or the outer annular wall adopt the measures of a snap-in connection structure, expansion joints, sliding joints and the like at each connection position, so that the integral strength of the annular air duct is effectively improved, and the service life of a dry quenching furnace is prolonged.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
an annular air duct with a double-layer inner annular wall structure comprises an annular air duct consisting of an inner annular wall and an outer annular wall; the inner annular wall consists of an inner annular wall and an outer annular wall, the inner annular wall and the outer annular wall are of independent structures, staggered joints are built between the inner annular wall and the outer annular wall, and expansion joints or brick joints are arranged between the inner annular wall and the outer annular wall.
Further, the thickness of the expansion joint or the width of the brick joint is 2-20 mm.
Further, the inner annular wall and/or the outer annular wall are annular wall structures formed by a plurality of sections of brickwork, and each section of brickwork comprises horizontal brickwork layers at two sides and an arched brickwork layer at the middle part; the horizontal brickwork is formed by building a plurality of layers of rectangular refractory bricks, the arch brickwork is formed by building a plurality of layers of special-shaped refractory bricks, and the special-shaped refractory bricks comprise arch foot bricks at two sides and arch bricks in the middle; the horizontal layer is arranged on the bracket, and the width is not more than the width of the bracket.
Furthermore, the refractory bricks of the horizontal masonry layer and/or the arched masonry layer are connected in a meshed mode through a brick groove and brick tongue locking structure.
Further, a radial outlet is arranged on one side of the annular air duct, an outlet partition wall is arranged in the annular air duct in the middle of the radial outlet, and one end of the outlet partition wall is connected with an inner annular wall; the other side of the annular air duct is provided with a separation wall, and two ends of the separation wall are respectively connected with the outer annular wall and the inner annular wall of the inner layer.
Further, the outlet partition wall and the partition wall are arranged on the bracket, and sliding joints are arranged between the outlet partition wall and the bracket as well as between the partition wall and the bracket.
Further, a sliding seam is arranged between the inner annular wall and the bracket.
Further, the height of the outer-layer inner annular wall is smaller than or equal to the height of the inner-layer inner annular wall.
Further, the outer inner ring wall is provided with an arch connecting section at the end part close to the outlet partition wall/partition wall, the arch connecting section is composed of arch foot brick masonry and arch brick masonry, the arch foot brick masonry arranged on the outer side of the arch brick masonry is connected with the horizontal masonry layer of the adjacent section of masonry, and the arch foot brick masonry arranged on the outer side of the arch brick masonry is connected with the outlet partition wall/partition wall.
Compared with the prior art, the utility model has the beneficial effects that:
1) The inner annular wall and the outer annular wall are of independent structures, and an expansion joint or a large brick joint is arranged between the inner annular wall and the outer annular wall, so that the thermal expansion is absorbed conveniently;
2) The inner annular wall and/or the outer annular wall are/is provided with an arch masonry structure, so that the structural strength is higher;
3) The outer inner annular wall is connected with the outlet partition wall and the partition wall through an arch structure, the outlet partition wall and the partition wall are not inserted into the inner annular wall, and the inner annular wall is good in integrity and high in strength;
4) Sliding joints are arranged among the inner annular wall, the central partition wall and the bracket, so that the heat dissipation stress can be divided, and the masonry can be prevented from being damaged due to overhigh local thermal stress;
5) The inner annular wall and/or the outer annular wall adopt a snap connection structure, so that the overall strength is improved;
6) When the annular air duct is affected by accidents such as detonating, the damaged area of the masonry is small, the masonry is convenient to overhaul and maintain, and overhaul time and spare part cost are saved.
Drawings
FIG. 1 is a top view of an annular duct having a double-layered inner annular wall structure according to the present utility model.
Fig. 2 is A-A view of fig. 1.
FIG. 3 is a schematic view of the construction of horizontal courses and arched courses in a length of masonry according to the utility model.
FIG. 4 is a schematic view of the construction of a segment of masonry of the outer inner annular wall of the present utility model adjacent to the outlet dividing wall.
In the figure: 1. inner annular wall 2, outer annular wall 3, radial outlet 4, dividing wall 5, outlet dividing wall 6, outer annular wall 61, horizontal course 62, arched course 63, arched brick course 64, arch foot brick course 7, sliding seam 8, expansion seam 9, annular duct 10, bracket
Detailed Description
The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:
as shown in fig. 1 and 2, the annular air duct with the double-layer inner annular wall structure comprises an annular air duct 9 consisting of an inner annular wall and an outer annular wall 2; the inner annular wall consists of an inner annular wall 1 and an outer annular wall 6, the inner annular wall 1 and the outer annular wall 6 are of independent structures, staggered joints between the inner annular wall 1 and the outer annular wall 6 are built, and expansion joints 8 or brick joints are arranged between the inner annular wall 1 and the outer annular wall 6.
Further, the thickness of the expansion joint 8 or the width of the brick joint is 2-20 mm.
Further, the inner annular wall 1 and/or the outer inner annular wall 6 are annular wall structures composed of a plurality of sections of brickwork, as shown in fig. 3, each section of brickwork comprises horizontal brickwork layers 61 on two sides and an arched brickwork layer 62 in the middle; wherein the horizontal brickwork 61 is built by a plurality of layers of rectangular refractory bricks, the arch brickwork 62 is built by a plurality of layers of special-shaped refractory bricks, and the special-shaped refractory bricks comprise arch foot bricks at two sides and arch bricks at the middle part; the horizontal ply 61 is provided on the bracket 10 and has a width not greater than the width of the bracket 10.
Further, the refractory bricks of the horizontal masonry layer 61 and/or the arched masonry layer 62 are connected in a meshed manner by adopting a brick groove and brick tongue locking structure.
Further, a radial outlet 3 is arranged at one side of the annular air duct 9, an outlet partition wall 5 is arranged in the annular air duct 9 in the middle of the radial outlet 3, and one end of the outlet partition wall 5 is connected with the inner annular wall 1; the other side of the annular air duct 9 is provided with a separation wall 4, and two ends of the separation wall 4 are respectively connected with the outer annular wall 2 and the inner annular wall 1.
Further, the outlet partition wall 5 and the partition wall 4 are arranged on the bracket 10, and sliding slits 7 are arranged between the outlet partition wall 5 and the bracket 10 and between the partition wall 4 and the bracket 10.
Further, a sliding seam 7 is arranged between the inner annular wall and the bracket 10.
Further, the height of the outer-layer inner annular wall 6 is smaller than or equal to the height of the inner-layer inner annular wall 1.
Further, as shown in fig. 4, the outer inner annular wall 6 is provided with an arch connecting section at the end close to the outlet partition wall 5/partition wall 4, the arch connecting section is composed of an arch foot brick masonry 64 and an arch brick masonry 63, the arch foot brick masonry 64 arranged at the outer side of the arch brick masonry 63 is connected with the horizontal masonry 61 of the adjacent section of masonry, and the arch foot brick masonry 64 arranged at the outer side of the arch brick masonry 63 is connected with the outlet partition wall 5/partition wall 4.
The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present utility model, but the scope of the present utility model is not limited to the following examples.
[ example ]
In the embodiment, the dry quenching furnace adopts a double-layer inner annular wall to strengthen the structural strength of the annular air duct, and the method specifically comprises the following steps:
as shown in fig. 1 and 2, the annular air duct 9 is an annular cavity formed by an inner annular wall (comprising an inner annular wall 1 and an outer annular wall 6) and an outer annular wall 2, one side of the annular air duct 9 is provided with a radial outlet 3, an outlet partition wall 5 is arranged, the other side of the annular air duct 9 is provided with a partition wall 4, the partition wall 4 partitions the annular air duct 9 into two independent cavities, circulating gas enters the two independent cavities of the annular air duct 9 from a chute outlet and is discharged from the radial outlet 3, and the outlet partition wall 5 is used for preventing two parts of air flow from forming vortex.
In this embodiment, 6 sets up the expansion joint between inlayer inner ring wall 1 and the outer inner ring wall, and the thickness of expansion joint is in 15mm, makes inlayer inner ring wall 1 and outer inner ring wall 6 become mutually independent structure through setting up the expansion joint, is convenient for absorb thermal expansion, avoids buffering the influence of the impact such as detonating.
As shown in fig. 3, in this embodiment, the outer-layer inner annular wall 6 is an annular wall structure composed of a plurality of segments of masonry, each segment of masonry includes horizontal masonry layers 61 on both sides and arched masonry layers 62 in the middle; wherein the horizontal brickwork 61 is built by a plurality of layers of rectangular refractory bricks, and the arch brickwork 62 is built by a plurality of layers of special-shaped refractory bricks (comprising arch foot bricks and arch bricks); the horizontal course 61 is provided on the bracket 10 and has a width smaller than that of the bracket 10.
The connection structure design between the outer inner annular wall 6 and the outlet dividing wall 5 and the dividing wall 4 is an arch connection structure shown in fig. 4, the arch connection section consists of an arch foot brick masonry 64 and an arch brick masonry 63, the dividing wall 4 and the outlet dividing wall 5 replace a horizontal masonry layer on one side of the masonry, and two sides of the dividing wall 4 and the outlet dividing wall 5 are clamped by the arch brick masonry, so that the strength of the arch connection section is enhanced.
In this embodiment, expansion joints 8 are respectively arranged between the partition wall 4, the outlet partition wall 5, the inner annular wall 1 and the outer annular wall 6, and the thickness of the expansion joints 8 is 12mm.
In this embodiment, the height H2 of the outer-layer inner annular wall 6 is equal to the height H1 of the inner-layer inner annular wall 1, and the outer-layer inner annular wall 6 reinforces the inner-layer inner annular wall 1.
In this embodiment, sliding slits 7 are provided between the inner annular wall (including the inner annular wall 1 and the outer annular wall 6), the partition wall 4, the outlet partition wall 5 and the bracket 10.
In the embodiment, all layers of wall bricks of the inner annular wall are connected in a meshed mode through a brick groove brick tongue locking structure, so that the inner annular wall structure of the annular air duct is formed into a tightly connected whole.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (9)
1. An annular air duct with a double-layer inner annular wall structure comprises an annular air duct consisting of an inner annular wall and an outer annular wall; the inner annular wall is characterized by comprising an inner annular wall and an outer inner annular wall, wherein the inner annular wall and the outer annular wall are of independent structures, staggered joints are built between the inner annular wall and the outer annular wall, and expansion joints or brick joints are arranged between the inner annular wall and the outer annular wall.
2. The annular duct with the double-layer inner annular wall structure according to claim 1, wherein the thickness of the expansion gap or the width of the brick gap is 2-20 mm.
3. The annular air duct with the double-layer inner annular wall structure according to claim 1, wherein the inner annular wall and/or the outer annular wall are annular wall structures composed of a plurality of sections of brickwork, and each section of brickwork comprises horizontal brickwork layers on two sides and an arched brickwork layer in the middle; the horizontal brickwork is formed by building a plurality of layers of rectangular refractory bricks, the arch brickwork is formed by building a plurality of layers of special-shaped refractory bricks, and the special-shaped refractory bricks comprise arch foot bricks at two sides and arch bricks in the middle; the horizontal layer is arranged on the bracket, and the width is not more than the width of the bracket.
4. An annular duct having a double-layered inner annular wall structure according to claim 3, wherein the bricks of the horizontal and/or arched courses are joined by a tongue-and-groove locking arrangement.
5. The annular air duct with the double-layer inner annular wall structure according to claim 1, wherein a radial outlet is arranged on one side of the annular air duct, an outlet partition wall is arranged in the annular air duct in the middle of the radial outlet, and one end of the outlet partition wall is connected with the inner annular wall; the other side of the annular air duct is provided with a separation wall, and two ends of the separation wall are respectively connected with the outer annular wall and the inner annular wall of the inner layer.
6. The annular air duct with the double-layer inner annular wall structure according to claim 5, wherein the outlet partition wall and the partition wall are arranged on the bracket, and sliding slits are arranged between the outlet partition wall and the bracket.
7. The annular air duct with the double-layer inner annular wall structure according to claim 1, wherein a sliding seam is arranged between the inner annular wall and the bracket.
8. The annular duct of claim 1, wherein the height of the outer inner annular wall is less than or equal to the height of the inner annular wall.
9. The annular air duct with the double-layer inner annular wall structure according to claim 1, wherein the outer annular wall is provided with an arch-shaped connecting section at the end part close to the outlet dividing wall/dividing wall, the arch-shaped connecting section is composed of arch foot brick masonry and arch brick masonry, the arch foot brick masonry arranged on the outer side of the arch foot brick masonry is connected with the horizontal masonry layer of the adjacent section of masonry, and the arch foot brick masonry arranged on the outer side of the arch foot brick masonry is connected with the outlet dividing wall/dividing wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211614640.2A CN116162473B (en) | 2022-12-15 | 2022-12-15 | Annular air duct with double-layer inner annular wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211614640.2A CN116162473B (en) | 2022-12-15 | 2022-12-15 | Annular air duct with double-layer inner annular wall structure |
Publications (2)
| Publication Number | Publication Date |
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| CN116162473A true CN116162473A (en) | 2023-05-26 |
| CN116162473B CN116162473B (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211614640.2A Active CN116162473B (en) | 2022-12-15 | 2022-12-15 | Annular air duct with double-layer inner annular wall structure |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09272869A (en) * | 1996-04-05 | 1997-10-21 | Nippon Steel Corp | Duct structure in coke dry quencher |
| CN103045272A (en) * | 2013-01-18 | 2013-04-17 | 四川达兴能源股份有限公司 | Support wall for recirculating air duct of coke dry-quenching furnace |
| CN103937512A (en) * | 2013-01-23 | 2014-07-23 | 北京华泰焦化工程技术有限公司 | Annular air duct |
| WO2015192764A1 (en) * | 2014-06-18 | 2015-12-23 | 段炼山 | Hollow building block and wall built by using same |
| CN110006257A (en) * | 2019-04-19 | 2019-07-12 | 中冶焦耐(大连)工程技术有限公司 | A kind of adaptive inner ring wall construction of Light deformation |
| CN110437851A (en) * | 2019-08-30 | 2019-11-12 | 中冶焦耐(大连)工程技术有限公司 | A kind of novel coke dry quenching furnace chute structure |
| CN210974529U (en) * | 2019-10-23 | 2020-07-10 | 金牛天铁煤焦化有限公司 | Coke dry quenching coke quenching furnace based on inert gas |
| CN219032079U (en) * | 2022-12-15 | 2023-05-16 | 中冶焦耐(大连)工程技术有限公司 | Annular air duct with double-layer inner annular wall structure |
-
2022
- 2022-12-15 CN CN202211614640.2A patent/CN116162473B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09272869A (en) * | 1996-04-05 | 1997-10-21 | Nippon Steel Corp | Duct structure in coke dry quencher |
| CN103045272A (en) * | 2013-01-18 | 2013-04-17 | 四川达兴能源股份有限公司 | Support wall for recirculating air duct of coke dry-quenching furnace |
| CN103937512A (en) * | 2013-01-23 | 2014-07-23 | 北京华泰焦化工程技术有限公司 | Annular air duct |
| WO2015192764A1 (en) * | 2014-06-18 | 2015-12-23 | 段炼山 | Hollow building block and wall built by using same |
| CN110006257A (en) * | 2019-04-19 | 2019-07-12 | 中冶焦耐(大连)工程技术有限公司 | A kind of adaptive inner ring wall construction of Light deformation |
| CN110437851A (en) * | 2019-08-30 | 2019-11-12 | 中冶焦耐(大连)工程技术有限公司 | A kind of novel coke dry quenching furnace chute structure |
| CN210974529U (en) * | 2019-10-23 | 2020-07-10 | 金牛天铁煤焦化有限公司 | Coke dry quenching coke quenching furnace based on inert gas |
| CN219032079U (en) * | 2022-12-15 | 2023-05-16 | 中冶焦耐(大连)工程技术有限公司 | Annular air duct with double-layer inner annular wall structure |
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| CN116162473B (en) | 2024-07-09 |
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