CN214528836U - Coke oven top structure for realizing smokeless coal charging - Google Patents
Coke oven top structure for realizing smokeless coal charging Download PDFInfo
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- CN214528836U CN214528836U CN202023273061.5U CN202023273061U CN214528836U CN 214528836 U CN214528836 U CN 214528836U CN 202023273061 U CN202023273061 U CN 202023273061U CN 214528836 U CN214528836 U CN 214528836U
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- 239000000571 coke Substances 0.000 title claims abstract description 68
- 239000003245 coal Substances 0.000 title claims abstract description 64
- 239000000779 smoke Substances 0.000 claims abstract description 66
- 230000001174 ascending effect Effects 0.000 claims abstract description 27
- 238000003763 carbonization Methods 0.000 claims abstract description 15
- 230000000630 rising effect Effects 0.000 claims abstract description 3
- 239000000428 dust Substances 0.000 abstract description 18
- 238000004939 coking Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000007789 gas Substances 0.000 abstract description 2
- 208000004067 Flatfoot Diseases 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
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- Coke Industry (AREA)
Abstract
The utility model relates to a coke oven top structure for realizing smokeless coal charging, wherein the coke oven top is provided with a coal charging hole/a smoke guide hole and a rising pipe hole; the coal charging hole/smoke guide hole is formed by sequentially connecting a circular hole section I, an upper conical hole section and a lower conical hole section from top to bottom; the taper of the lower taper hole section is larger than that of the upper taper hole section; the ascending pipe hole is formed by sequentially connecting a circular hole section II, an upper half conical hole section and a lower half conical hole section from top to bottom; the upper semi-conical hole section and the lower semi-conical hole section are semi-conical holes on one side facing the carbonization chamber, and semi-cylindrical holes on the other side; and the taper of the lower half taper hole section is larger than that of the upper half taper hole section. The utility model discloses an increase coal-charging hole/smoke guide hole, the air current flow area of tedge hole department, reduce the system resistance of circulation of gas, effectively improve tedge and coal-charging hole/smoke guide hole to the collection efficiency of raw coke oven gas and smoke and dust, reduce the pollution sources and reduce harmful gas and discharge, make coking production realize green energy-conserving operation.
Description
Technical Field
The utility model relates to a coke oven technical field especially relates to a coke oven roof structure of smokeless coal charging of realization.
Background
In a large coke oven, a coke oven body consists of a regenerator, a chute, a combustion chamber/carbonization chamber and an oven top, wherein the oven top is arranged at the upper part of the combustion chamber/carbonization chamber. The top of the coke oven is generally provided with 4 coal charging holes (the tamping coke oven is a smoke guide hole and a graphite removing hole) and 1 ascending tube hole. The area between the coal charging line determined by the coal charging height and the overhead bricks at the lower part of the furnace top in the carbonization chamber is the furnace top space, and the raw gas and the smoke dust generated in the coking process are led into the ascending pipe through the furnace top space and the coal charging hole circulation space and then are led out of the coke furnace through the ascending pipe. At present, most coal charging holes adopt a flat-foot horn-mouth-shaped 'splayed' structure, and the structure can be used for intensively collecting and retreating coke oven raw coke gas and smoke dust generated in the coal charging process and smoke dust generated in the coke discharging process of a normally produced coke oven.
However, in the actual production process, in order to increase the coke yield, the excess production of the coke oven becomes a normal state; the coal charging quantity is large, so that a coke oven generates a large amount of raw coke oven gas and smoke dust, the circulation space of the coal charging hole at the top of the oven cannot meet the pressure requirement of the top of the oven during production, and the smoke dust is seriously escaped; sometimes, the furnace top will smoke and fire in the production process, which causes environmental pollution and potential safety hazard, and also seriously worsens the environment of the furnace top operation area.
With the increasingly strict environmental protection requirements of China, in the production process of the coke oven, the problem of reducing the emission of raw coke oven gas and smoke dust from the aspect of improving the structure of the oven body and controlling pollution from the source is always the subject to be faced by the technical designers of the coke oven equipment.
Disclosure of Invention
The utility model provides a realize coke oven roof structure of smokeless coal charging, through the airflow circulation area of increase coal charging hole/smoke guide hole, tedge hole department, reduce the system resistance of gas circulation, effectively improve the collection efficiency of tedge and coal charging hole/smoke guide hole to raw coke oven gas and smoke and dust, reduce the pollution sources and reduce harmful gas and discharge, make coking production realize green energy-conserving operation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a coke oven roof structure for realizing smokeless coal charging is characterized in that a coal charging hole/smoke guide hole is arranged above a corresponding carbonization chamber of the coke oven roof, and a rising pipe hole is arranged above the carbonization chamber close to the machine side or the coke side; the coal charging hole/smoke guide hole is formed by sequentially connecting a circular hole section I, an upper conical hole section and a lower conical hole section from top to bottom; the taper of the lower taper hole section is larger than that of the upper taper hole section; the ascending pipe hole is formed by sequentially connecting a circular hole section II, an upper half conical hole section and a lower half conical hole section from top to bottom; the upper semi-conical hole section and the lower semi-conical hole section are semi-conical holes on one side facing the carbonization chamber, and semi-cylindrical holes on the other side; and the taper of the lower half taper hole section is larger than that of the upper half taper hole section.
On the vertical central section of the coal charging hole/smoke guide hole, the contour line of the upper conical hole section is a straight line, and the contour line of the lower conical hole section is a straight line or an arc line.
On the vertical central section of the riser hole, the contour line of the upper half-cone hole section is a straight line, and the contour line of the lower half-cone hole section is a straight line or an arc line.
In the upper conical hole section and the upper half conical hole section, the included angle between the hole wall and the horizontal plane is more than 45 degrees and less than 75 degrees; in the half-cone holes of the lower cone hole section and the lower half-cone hole section, the included angle between the hole wall and the horizontal plane is more than 15 degrees and less than or equal to 45 degrees.
Compared with the prior art, the beneficial effects of the utility model are that:
the system resistance of gas circulation is reduced by increasing the airflow circulation areas of the coal charging hole/smoke guide hole and the ascending pipe hole, the raw coke oven gas and smoke dust collection efficiency of the ascending pipe and the coal charging hole/smoke guide hole is effectively improved, the pollution source is reduced, the emission of harmful gas is reduced, and green and energy-saving operation of coking production is realized.
Drawings
FIG. 1 is a schematic structural view of a coke oven roof of embodiment 1 of the present invention.
FIG. 2 is a schematic structural view of a coke oven roof of embodiment 2 of the present invention.
FIG. 3 is a schematic structural view of a coke oven roof of embodiment 3 of the present invention.
FIG. 4 is a structural schematic diagram of a coke oven roof of embodiment 4 of the present invention.
In the figure: 1. the method comprises the following steps of carbonizing a chamber 2, a furnace top 3, a coal charging hole 4, a smoke guide hole 5, an ascending pipe hole 6, a coal charging line I7, a coal charging line II 8, an airflow flowing direction 9, a circular hole section I10, an upper conical hole section 11, a lower conical hole section 12, a circular hole section II 13, an upper semi-conical hole section 14, a lower semi-conical hole section 15, a semi-cylindrical hole A1, an included angle A2 between the hole wall of the upper conical hole section and the horizontal plane, an included angle A3 between the hole wall of the lower conical hole section and the horizontal plane, an included angle A4 between the hole wall of the semi-conical hole of the upper semi-conical hole section and the horizontal plane, and an included angle A4 between the hole wall of the semi-conical hole of the lower semi-conical hole section II and the horizontal plane
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1-4, the coke oven top structure for realizing smokeless coal charging of the utility model is characterized in that a coke oven top 2 is provided with a coal charging hole 3/a smoke guide hole 4 above a corresponding coking chamber 1, and an ascending pipe hole 5 is arranged above the coking chamber 1 close to the machine side or the coking side; the coal charging hole 3/the smoke guide hole 4 are formed by sequentially connecting a round hole section I9, an upper conical hole section 10 and a lower conical hole section 11 from top to bottom; and the conicity of the lower conical hole section 11 is greater than that of the upper conical hole section 10; the ascending pipe hole 5 is formed by sequentially connecting a round hole section II 12, an upper half-conical hole section 13 and a lower half-conical hole section 14 from top to bottom; the upper semi-conical hole section 13 and the lower semi-conical hole section 14 are semi-conical holes on one side facing the interior of the carbonization chamber 1, and semi-cylindrical holes on the other side; and the taper of the lower half-bore section 14 is greater than the taper of the upper half-bore section 13.
On the vertical central section of the coal charging hole 3/the smoke guide hole 4, the contour line of the upper conical hole section 10 is a straight line, and the contour line of the lower conical hole section 11 is a straight line or an arc line.
On the vertical central section of the riser hole 5, the contour line of the upper half-conical hole section 13 is a straight line, and the contour line of the lower half-conical hole section 14 is a straight line or an arc line.
In the upper conical hole section 10 and the upper half conical hole section 13, the included angle between the hole wall and the horizontal plane is more than 45 degrees and less than 75 degrees; in the half-cone holes of the lower cone hole section 11 and the lower half-cone hole section 14, the included angle between the hole wall and the horizontal plane is more than 15 degrees and less than or equal to 45 degrees.
The following examples are carried out on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.
[ example 1 ]
As shown in FIG. 1, in the present embodiment, the coke oven is a top-charging coke oven, 4 coal charging holes 3 are provided in the top 2 of the coke oven along the longitudinal direction of the coking chamber 1, and 1 ascending pipe hole 5 is provided near the machine side.
In the embodiment, the coal charging hole 3 is formed by sequentially connecting a round hole section I9, an upper conical hole section 10 and a lower conical hole section 11 from top to bottom; and the conicity of the lower conical hole section 11 is greater than that of the upper conical hole section 10; the ascending pipe hole 5 is formed by sequentially connecting a circular hole section II 12, an upper half-conical hole section 13 and a lower half-conical hole section 14 from top to bottom; the upper semi-conical hole section 13 and the lower semi-conical hole section 14 are semi-conical holes on one side facing the interior of the carbonization chamber 1, and semi-cylindrical holes on the other side; and the taper of the lower half-bore section 14 is greater than the taper of the upper half-bore section 13.
On the vertical central section of the coal charging hole 3, the contour line of the upper conical hole section 10 is a straight line, and the contour line of the lower conical hole section 11 is a straight line. Compared with the coal charging hole with the splayed structure with the flat feet at the lower part, the coal charging hole is equivalently provided with a chamfer angle structure at the bottom. On the vertical central section of the riser hole 5, the contour line of the upper half-cone hole section 13 is a straight line, and the contour line of the lower half-cone hole section 14 is a straight line. Compared with the riser hole with the lower part of a splayed structure with flat feet, the novel riser hole is equivalent to the fact that a chamfer structure is additionally arranged at the bottom of the riser hole.
In this embodiment, the angle between the hole wall of the upper conical hole section 10 of the coal charging hole 3 and the horizontal plane is 60 degrees; the angle between the hole wall of the lower conical hole section 11 and the horizontal plane is 35 degrees. The included angle between the hole wall of the upper half conical hole section 13 of the ascending pipe hole 5 and the horizontal plane is 60 degrees; the angle between the wall of the semi-conical hole of the lower semi-conical hole section 14 and the horizontal plane is 35 degrees.
In the production process of the top-charging coke oven, when coal is charged to the coal charging line I6 through the coal charging hole 3, the coal charging line I6 and the bottom of the oven top 2 form an oven top space, raw coke gas and smoke dust generated during coal charging and coking pass through the coal charging hole 3 in the oven top space according to the airflow flowing direction 8, due to the existence of the lower taper hole section 11, the opening degree of the bottom of the coal charging hole 3 is increased, the flowing section of airflow is increased, the system resistance can be effectively reduced, and the raw coke gas and the smoke dust are guided to reach the ascending tube hole 5.
At the riser hole 5, due to the existence of the lower semi-conical hole section 14, the opening degree of the bottom of the riser hole 5 is increased, the flow cross section of the airflow is increased, the system resistance can be effectively reduced, and the raw coke oven gas and the smoke dust can be smoothly guided out of the coke oven through the riser hole 5.
[ example 2 ]
As shown in FIG. 2, in the present embodiment, the coke oven is a top-charging coke oven, 4 coal charging holes 3 are provided in the top 2 of the coke oven along the longitudinal direction of the coking chamber 1, and 1 ascending pipe hole 5 is provided near the oven side.
In the embodiment, the coal charging hole 3 is formed by sequentially connecting a round hole section I9, an upper conical hole section 10 and a lower conical hole section 11 from top to bottom; and the conicity of the lower conical hole section 11 is greater than that of the upper conical hole section 10; the ascending pipe hole 5 is formed by sequentially connecting a circular hole section II 12, an upper half-conical hole section 13 and a lower half-conical hole section 14 from top to bottom; the upper semi-conical hole section 13 and the lower semi-conical hole section 14 are semi-conical holes on one side facing the interior of the carbonization chamber 1, and semi-cylindrical holes on the other side; and the taper of the lower half-bore section 14 is greater than the taper of the upper half-bore section 13.
On the vertical central section of the coal charging hole 3, the contour line of the upper conical hole section 10 is a straight line, and the contour line of the lower conical hole section 11 is an arc line. Compared with the coal charging hole with the splayed structure with the flat feet at the lower part, the coal charging hole is equivalently provided with a rounding structure at the bottom. On the vertical central section of the riser hole 5, the contour line of the upper half-conical hole section 13 is a straight line, and the contour line of the lower half-conical hole section 14 is an arc line. Compared with the riser hole with the lower part of a splayed structure with flat feet, the riser hole is equivalently provided with a round structure at the bottom of the riser hole.
In this embodiment, the angle between the hole wall of the upper conical hole section 10 of the coal charging hole 3 and the horizontal plane is 70 degrees; the angle between the hole wall of the lower conical hole section 11 and the horizontal plane is 40 degrees. The angle between the hole wall of the upper half conical hole section 13 of the ascending pipe hole 5 and the horizontal plane is 70 degrees; the angle between the wall of the half-cone hole of the lower half-cone hole section 14 and the horizontal plane is 40 degrees.
[ example 3 ]
As shown in FIG. 3, in the present embodiment, the coke oven is a stamp-charging coke oven, and 2 smoke guide holes 3 are provided in the oven top 2 along the longitudinal direction of the coking chamber 1, and 1 ascending pipe hole 5 is provided near the coke side.
In this embodiment, the smoke guide hole 4 is formed by sequentially connecting a first circular hole section 9, an upper conical hole section 10 and a lower conical hole section 11 from top to bottom; and the conicity of the lower conical hole section 11 is greater than that of the upper conical hole section 10; the ascending pipe hole 5 is formed by sequentially connecting a circular hole section II 12, an upper half-conical hole section 13 and a lower half-conical hole section 14 from top to bottom; the upper semi-conical hole section 13 and the lower semi-conical hole section 14 are semi-conical holes on one side facing the interior of the carbonization chamber 1, and semi-cylindrical holes on the other side; and the taper of the lower half-bore section 14 is greater than the taper of the upper half-bore section 13.
On the vertical central section of the smoke guide hole 4, the contour line of the upper conical hole section 10 is a straight line, and the contour line of the lower conical hole section 11 is a straight line. Compared with the existing common smoke guide hole with a splayed structure with a flat foot at the lower part, the smoke guide hole is equivalently provided with a chamfer angle structure at the bottom. On the vertical central section of the riser hole 5, the contour line of the upper half-cone hole section 13 is a straight line, and the contour line of the lower half-cone hole section 14 is a straight line. Compared with the riser hole with the lower part of a splayed structure with flat feet, the novel riser hole is equivalent to the fact that a chamfer structure is additionally arranged at the bottom of the riser hole.
In this embodiment, the upper taper hole section 10 of the smoke guiding hole 4 has an angle of 55 ° with the horizontal plane; the angle between the hole wall of the lower conical hole section 11 and the horizontal plane is 30 degrees. The upper half taper hole section 13 of the ascending pipe hole 5 has an included angle of 55 degrees with the horizontal plane; the angle between the wall of the semi-conical hole of the lower semi-conical hole section 14 and the horizontal plane is 30 degrees.
In the production process of the tamping coke oven, the coal cakes loaded reach a coal loading line II 7, a furnace top space is formed between the coal loading line II 7 and the bottom of a furnace top 2, raw coke oven gas and smoke dust generated in the coal loading period enter a smoke guide car sleeve through a smoke guide hole according to the airflow flowing direction 8, due to the existence of a lower conical hole section 11, the opening degree of the bottom of the smoke guide hole 4 is increased, the flowing section of airflow is increased, the system resistance can be effectively reduced, and the raw coke oven gas and the smoke dust are guided to reach the smoke guide car sleeve. The raw gas and the smoke generated during the coking process pass through the smoke guide hole 4 according to the airflow flowing direction 8, and the flowing section of the airflow is increased because the opening degree at the bottom of the smoke guide hole 4 is increased, so that the system resistance can be reduced, and the raw gas and the smoke can be effectively guided to the riser hole 5. At the ascending pipe hole, due to the existence of the lower semi-conical hole section 14, the opening degree of the bottom of the ascending pipe hole 5 is increased, the flow cross section of the airflow is increased, the system resistance can be effectively reduced, and the raw coke oven gas and the smoke dust can be smoothly guided out of the coke oven through the ascending pipe hole 5.
[ example 4 ]
As shown in FIG. 4, in the present embodiment, the coke oven is a stamp-charging coke oven, and 2 smoke guide holes 4 are provided in the oven top 2 along the longitudinal direction of the coking chamber 1, and 1 ascending pipe hole 5 is provided near the coke side.
In this embodiment, the smoke guide hole 4 is formed by sequentially connecting a first circular hole section 9, an upper conical hole section 10 and a lower conical hole section 11 from top to bottom; and the conicity of the lower conical hole section 11 is greater than that of the upper conical hole section 10; the ascending pipe hole 5 is formed by sequentially connecting a circular hole section II 12, an upper half-conical hole section 13 and a lower half-conical hole section 14 from top to bottom; the upper semi-conical hole section 13 and the lower semi-conical hole section 14 are semi-conical holes on one side facing the interior of the carbonization chamber 1, and semi-cylindrical holes on the other side; and the taper of the lower half-bore section 14 is greater than the taper of the upper half-bore section 13.
On the vertical central section of the smoke guide hole 4, the contour line of the upper conical hole section 10 is a straight line, and the contour line of the lower conical hole section 11 is an arc line. Compared with the existing common smoke guide hole with the splayed structure with the flat feet at the lower part, the smoke guide hole is equivalently provided with a rounding structure at the bottom. On the vertical central section of the riser hole 5, the contour line of the upper half-conical hole section 13 is a straight line, and the contour line of the lower half-conical hole section 14 is an arc line. Compared with the riser hole with the lower part of a splayed structure with flat feet, the riser hole is equivalently provided with a round structure at the bottom of the riser hole.
In this embodiment, the upper taper hole section 10 of the smoke guiding hole 4 has an angle of 65 ° with the horizontal plane; the angle between the hole wall of the lower taper hole section 11 and the horizontal plane is 45 degrees. The angle between the hole wall of the upper half conical hole section 13 of the ascending pipe hole 5 and the horizontal plane is 65 degrees; the angle between the wall of the semi-conical hole of the lower semi-conical hole section 14 and the horizontal plane is 45 degrees.
In the production process of the tamping coke oven, the coal cakes loaded reach a coal loading line II 7, a furnace top space is formed between the coal loading line II 7 and the bottom of a furnace top 2, raw coke oven gas and smoke dust generated in the coal loading period enter a smoke guide car sleeve through a smoke guide hole 4 according to the airflow flowing direction 8, the opening degree of the bottom of the smoke guide hole 4 is increased due to the existence of a lower conical hole section 11, the flowing section of airflow is increased, the system resistance can be effectively reduced, and the raw coke oven gas and the smoke dust are guided to reach the smoke guide car sleeve. The raw gas and the smoke generated during the coking process pass through the smoke guide hole 4 according to the airflow flowing direction 8, and the flowing section of the airflow is increased because the opening degree at the bottom of the smoke guide hole 4 is increased, so that the system resistance can be reduced, and the raw gas and the smoke can be effectively guided to the riser hole 5. At the riser hole 5, due to the existence of the lower semi-conical hole section 14, the opening degree of the bottom of the riser hole 5 is increased, the flow cross section of the airflow is increased, the system resistance can be effectively reduced, and the raw coke oven gas and the smoke dust can be smoothly guided out of the coke oven through the riser hole 5.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. A coke oven roof structure for realizing smokeless coal charging is characterized in that a coal charging hole/smoke guide hole is arranged above a corresponding carbonization chamber of the coke oven roof, and a rising pipe hole is arranged above the carbonization chamber close to the machine side or the coke side; the coal charging hole/smoke guide hole is formed by sequentially connecting a circular hole section I, an upper conical hole section and a lower conical hole section from top to bottom; the taper of the lower taper hole section is larger than that of the upper taper hole section; the ascending pipe hole is formed by sequentially connecting a circular hole section II, an upper half conical hole section and a lower half conical hole section from top to bottom; the upper semi-conical hole section and the lower semi-conical hole section are semi-conical holes on one side facing the carbonization chamber, and semi-cylindrical holes on the other side; and the taper of the lower half taper hole section is larger than that of the upper half taper hole section.
2. The coke oven roof structure for realizing smokeless coal charging according to claim 1, wherein on the vertical central cross section of the coal charging hole/smoke guide hole, the contour line of the upper conical hole section is a straight line, and the contour line of the lower conical hole section is a straight line or an arc line.
3. The coke oven roof structure for realizing smokeless coal charging according to claim 1, wherein on the vertical central section of the riser hole, the contour line of the upper half-cone hole section is a straight line, and the contour line of the lower half-cone hole section is a straight line or an arc line.
4. The coke oven roof structure for realizing smokeless coal charging according to claim 1, wherein in the upper conical hole section and the upper semi-conical hole section, the included angle between the hole wall and the horizontal plane is more than 45 degrees and less than 75 degrees; in the half-cone holes of the lower cone hole section and the lower half-cone hole section, the included angle between the hole wall and the horizontal plane is more than 15 degrees and less than or equal to 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023273061.5U CN214528836U (en) | 2020-12-30 | 2020-12-30 | Coke oven top structure for realizing smokeless coal charging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023273061.5U CN214528836U (en) | 2020-12-30 | 2020-12-30 | Coke oven top structure for realizing smokeless coal charging |
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| CN214528836U true CN214528836U (en) | 2021-10-29 |
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| CN202023273061.5U Withdrawn - After Issue CN214528836U (en) | 2020-12-30 | 2020-12-30 | Coke oven top structure for realizing smokeless coal charging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112574761A (en) * | 2020-12-30 | 2021-03-30 | 中冶焦耐(大连)工程技术有限公司 | Coke oven top structure for realizing smokeless coal charging |
-
2020
- 2020-12-30 CN CN202023273061.5U patent/CN214528836U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112574761A (en) * | 2020-12-30 | 2021-03-30 | 中冶焦耐(大连)工程技术有限公司 | Coke oven top structure for realizing smokeless coal charging |
| CN112574761B (en) * | 2020-12-30 | 2024-07-09 | 中冶焦耐(大连)工程技术有限公司 | Coke oven top structure for realizing smokeless coal charging |
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