CN216106760U - Coke oven carbonization chamber structure capable of reducing smoke emission - Google Patents
Coke oven carbonization chamber structure capable of reducing smoke emission Download PDFInfo
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- CN216106760U CN216106760U CN202122377254.3U CN202122377254U CN216106760U CN 216106760 U CN216106760 U CN 216106760U CN 202122377254 U CN202122377254 U CN 202122377254U CN 216106760 U CN216106760 U CN 216106760U
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Abstract
The utility model relates to a coke oven carbonization chamber structure for reducing smoke dust emission, wherein a top-spanning brick is arranged at the top of a carbonization chamber, and the top space of the carbonization chamber between the top-spanning brick and a coal charging line is the top space of the coke oven; two sides of the furnace top space respectively extend outwards to form a groove structure, so that the width of the furnace top space is larger than that of the carbonization chamber. The utility model reduces the pressure in the coking chamber at the initial stage of coal charging by enlarging the flow cross section of the raw coke gas in the top space of the coking chamber, and can effectively reduce the escape of the raw coke gas and smoke dust on the premise of not influencing the height of the coke cake to be mature.
Description
Technical Field
The utility model relates to the technical field of coke ovens, in particular to a coke oven carbonization chamber structure for reducing smoke dust emission.
Background
In a large coke oven, a coke oven body consists of a regenerator, chutes, combustion chambers and carbonization chambers arranged at intervals and an oven top, a top-spanning brick is arranged at the top of the corresponding carbonization chamber, and the oven top is provided with a coal charging hole (for a top-loading coke oven, a tamping coke oven is provided with a smoke guide hole and a carbon removal hole) and a riser hole. In the coking chamber, the area between the coal charging line and the overhead bricks, which is determined by the coal charging height, is called as the furnace top space, and raw gas and smoke generated in the coal charging and coking processes 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 oven through the ascending pipe. The height of the furnace top space is an important parameter in the design of the coke oven body, and the maturity of the coke cake top and the export of crude gas can be influenced by over-large or under-small height.
During the coal charging and leveling processes and at the initial stage of coking, a great amount of raw gas carrying dust is generated in the coking chamber, and the raw gas enters the ascending pipe through the furnace top space. Because a large amount of gas is generated in a limited space in a short time, the air pressure of the top space of the carbonization chamber is higher, the phenomena of smoke and fire are generated at the furnace top and the furnace door at the initial stages of coal charging, coal leveling and coking, the environmental pollution and the potential safety hazard are caused, and the environment of the operation area of the furnace top is also seriously worsened.
In order to reduce the phenomenon of escape of raw coke oven gas and smoke dust during coal charging, the existing coke oven is generally provided with a high-pressure ammonia water matched coal charging dust removal system or a coking chamber pressure monotonous system, but the actual field use effect is not ideal, and the raw coke oven gas still emerges from the oven top and the oven door during coal charging of the coke oven.
Disclosure of Invention
The utility model provides a coke oven carbonization chamber structure for reducing smoke emission, which can effectively reduce the escape of raw coke gas and smoke dust by enlarging the flow cross section of the raw coke gas in the furnace top space of the carbonization chamber and reducing the pressure in the carbonization chamber at the initial coal charging stage on the premise of not influencing the height maturation of coke cakes.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a coke oven carbonization chamber structure for reducing smoke dust emission is characterized in that a top-spanning brick is arranged at the top of a carbonization chamber, and the space at the top of the carbonization chamber between the top-spanning brick and a coal charging line is a furnace top space; two sides of the furnace top space respectively extend outwards to form a groove structure, so that the width of the furnace top space is larger than that of the carbonization chamber.
The groove structure is formed by furnace top masonry when the coke oven is built, corbels are respectively arranged at the upper part and the lower part of the groove structure for transition, and the corbels adopt a layer-by-layer overhanging structure.
The inner side surface of the bracket is a straight surface or an arc surface.
The distance between the outward extending single side of the furnace top space, namely the depth of the groove structure, is not more than 1/4 of the distance between the wall of the carbonization chamber and the edge of the fire hole at the corresponding side, and the distance from the edge of the fire hole is at least 150 mm.
Along the machine side-coke side direction of the coke oven, 2 outer end surfaces of the grooves do not exceed the inner surfaces of the furnace door lining bricks at the corresponding ends.
The coke oven is a top-loading coke oven or a tamping coke oven.
Compared with the prior art, the utility model has the beneficial effects that:
the raw coke oven gas circulation area of the top space of the coking chamber is increased, the gas circulation resistance is reduced, the pressure in the coking chamber at the initial stage of coal charging and coking is reduced, the source control is realized, the escape of the raw coke oven gas and smoke dust is effectively reduced, and the coke oven production is more energy-saving and environment-friendly.
Drawings
FIG. 1 is a schematic cross-sectional view of a conventional coke oven carbonization chamber and a combustion chamber.
FIG. 2 is a schematic cross-sectional view of the coking chamber and the combustion chamber of the coke oven of the present invention.
Fig. 3 is an enlarged view of a portion B in fig. 2.
Fig. 4 is a view a-a in fig. 3.
In the figure: 1. combustion chamber 2, carbonization chamber 3, coal charging line 4, furnace top space 5, furnace top 6, cross-over brick 7, groove structure 8, fire observation hole 9, ascending pipe hole 10, coal charging hole/smoke guiding hole 11, bracket 12 and vertical coal charging line
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 2-4, the top of the carbonization chamber 2 is provided with a cross-top brick 6, and the top space of the carbonization chamber 2 between the cross-top brick 6 and the coal charging line 3 is a furnace top space 4; two sides of the furnace top space 4 extend outwards respectively to form a groove structure 7, so that the width of the furnace top space 4 is larger than that of the carbonization chamber 2.
The groove structure 7 is formed by furnace top masonry when the coke oven is built, brackets 11 are respectively arranged at the upper part and the lower part of the groove structure 7 for transition, and the brackets 11 adopt a layer-by-layer overhanging structure.
The inner side surface of the bracket 11 is a straight surface or an arc surface.
The distance of the outwardly extending single side of the furnace roof space 4, i.e. the depth of the groove structure 7, is not more than 1/4 of the distance from the wall of the carbonization chamber to the edge of the corresponding side fire hole 8, and the distance from the edge of the fire hole 8 is at least 150 mm.
Along the machine side-coke side direction of the coke oven, 2 outer end surfaces of the groove structures 7 do not exceed the inner surfaces of the furnace door lining bricks at the corresponding ends.
The coke oven is a top-loading coke oven or a tamping coke oven.
FIG. 1 is a schematic cross-sectional view of a coking chamber and a combustion chamber of a conventional coke oven. In the coke oven, a carbonization chamber 2 and a combustion chamber 1 are arranged at intervals, a top-spanning brick 6 is arranged at the top of the carbonization chamber 2, the part above the top-spanning brick 6 is an oven top 5, and the space between the top surface of a coal cake (corresponding to the height of a coal charging line 3) in the carbonization chamber 2 and the top-spanning brick 6 is called as an oven top space 4. During the coking process, the raw gas and the dust flow in the furnace top space 4 above the coal charging line 3 and the coal charging hole/smoke guide hole 10, then enter the riser hole 9 and enter the gas collecting pipe through the riser to be discharged outside. In the initial stage of coal charging, because the amounts of raw gas and dust are relatively large, the pressure in the carbonization chamber 2 is rapidly increased, and the smoke and dust easily escape from the furnace top 5 and the furnace door.
As shown in figure 2, the coke oven carbonization chamber structure for reducing smoke emission, provided by the utility model, is characterized in that two sides of the oven top space 4 of the carbonization chamber 2 are respectively expanded outwards to form groove structures 7, the cross section area and the volume of the oven top space 4 are increased through the groove structures 7, and the flow of raw coke oven gas above a coal cake at the initial coal charging stage can be smoother, so that the flow resistance of the raw coke oven gas and the pressure of the carbonization chamber 2 are reduced, and the aim of reducing the leakage of the raw coke oven gas and dust from the source is fulfilled.
The lower boundary of the groove structure 7 is positioned above the coal charging line 3, so that the problems of coke generation, difficult coke pushing and the like caused by the increase of the width above the coal cake are avoided. The upper boundary of the groove structure 7 is positioned below the roof-spanning brick 6, so that the influence on the structural strength of the coke oven caused by changing the shape of the roof-spanning brick is avoided.
The depth of the groove structure 7 is not more than 1/4 of the distance from the wall of the carbonization chamber to the edge of the fire observation hole 8 at the corresponding side, and the distance from the edge of the fire observation hole 8 is at least 150mm, so that the structural strength of the combustion chamber 1 is ensured.
The upper portion and the lower portion of the groove structure 7 are respectively provided with a bracket 11, the bracket 11 adopts a layer-by-layer overhanging structure, and the sectional area of the furnace top space 4 is enlarged while the strength of the furnace top space is ensured. The inner side surface of the bracket 11 may be a straight surface or an arc surface.
Along the length direction of the coke oven (machine side-coke side direction), the outer end surface of the groove structure 7 does not exceed the inner surface of the lining brick of the oven door at the corresponding end, so as to avoid influencing the sealing effect of the oven door. For a top-loading coke oven, the inner surface of the oven door lining brick is the coal loading line on the machine side or the coke side.
The utility model is suitable for the top-loading coke oven and the tamping coke oven.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (6)
1. A coke oven carbonization chamber structure for reducing smoke dust emission is characterized in that a top-spanning brick is arranged at the top of a carbonization chamber, and the space at the top of the carbonization chamber between the top-spanning brick and a coal charging line is a furnace top space; the furnace is characterized in that two sides of the furnace top space respectively extend outwards to form a groove structure, so that the width of the furnace top space is larger than that of the carbonization chamber.
2. The coke oven carbonization chamber structure for reducing smoke and dust emission of claim 1, wherein the groove structure is formed by oven top masonry during coke oven construction, corbels are respectively arranged at the upper part and the lower part of the groove structure for transition, and the corbels adopt a layer-by-layer overhanging structure.
3. The coke oven carbonization chamber structure for reducing smoke and dust emission of claim 2, wherein the inner side surface of the bracket is a straight surface or a cambered surface.
4. The coke oven coking chamber structure with reduced smoke and dust emissions of claim 1, wherein the oven roof space extends outwardly a single-sided distance, i.e., the depth of the groove structure, no greater than 1/4 of the distance from the coking chamber walls to the corresponding side fire hole edge, and at least 150mm from the fire hole edge.
5. The coke oven coking chamber structure with reduced smoke and dust emissions of claim 1, wherein 2 outer end faces of the grooves do not exceed the inner surfaces of the corresponding end oven door lining bricks in the machine-to-coke side direction of the coke oven.
6. The coke oven coking chamber structure with reduced smoke emissions of claim 1, wherein the coke oven is a top-loading coke oven or a stamp-charging coke oven.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122377254.3U CN216106760U (en) | 2021-09-29 | 2021-09-29 | Coke oven carbonization chamber structure capable of reducing smoke emission |
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| CN202122377254.3U CN216106760U (en) | 2021-09-29 | 2021-09-29 | Coke oven carbonization chamber structure capable of reducing smoke emission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113956890A (en) * | 2021-09-29 | 2022-01-21 | 中冶焦耐(大连)工程技术有限公司 | Coke oven carbonization chamber structure capable of reducing smoke emission |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113956890A (en) * | 2021-09-29 | 2022-01-21 | 中冶焦耐(大连)工程技术有限公司 | Coke oven carbonization chamber structure capable of reducing smoke emission |
| CN113956890B (en) * | 2021-09-29 | 2024-07-09 | 中冶焦耐(大连)工程技术有限公司 | Coke oven carbonization chamber structure capable of reducing smoke emission |
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