CN115353894A - Coke oven roof structure - Google Patents
Coke oven roof structure Download PDFInfo
- Publication number
- CN115353894A CN115353894A CN202210904595.8A CN202210904595A CN115353894A CN 115353894 A CN115353894 A CN 115353894A CN 202210904595 A CN202210904595 A CN 202210904595A CN 115353894 A CN115353894 A CN 115353894A
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- CN
- China
- Prior art keywords
- coke oven
- holes
- brickwork
- hole
- grouting
- 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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- 239000000571 coke Substances 0.000 title claims abstract description 53
- 239000012791 sliding layer Substances 0.000 claims abstract description 29
- 239000000779 smoke Substances 0.000 claims abstract description 18
- 239000003245 coal Substances 0.000 claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 238000003763 carbonization Methods 0.000 claims abstract description 7
- 230000000630 rising effect Effects 0.000 claims abstract description 4
- 239000011449 brick Substances 0.000 claims description 60
- 239000010410 layer Substances 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 8
- 239000004927 clay Substances 0.000 claims description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N glycerol Substances OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000643 oven drying Methods 0.000 abstract description 3
- 239000011819 refractory material Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
Images
Classifications
-
- 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
- C10B29/00—Other details of coke ovens
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a coke oven roof structure.A roof area of a coke oven comprises an upper masonry, a lower masonry and a sliding layer arranged between the upper masonry and the lower masonry; along the machine side-coke side direction, a plurality of observation holes are arranged above the corresponding combustion chamber in the furnace top area, a plurality of coal charging holes/smoke guide holes are arranged above the corresponding carbonization chamber, and a rising pipe hole and a furnace end grouting hole are arranged at the position of the furnace end; the furnace top area is also provided with a plurality of middle grouting holes. The tightness of the coke oven top in the whole expansion process can be ensured through the mutual engagement structure between the upper brickworks and between the lower brickworks; and the raw coke oven gas leakage rate of the whole oven top area of the coke oven in the production process can be effectively reduced by grouting through the reserved middle grouting hole after oven drying.
Description
Technical Field
The invention relates to the technical field of coke ovens, in particular to a coke oven roof structure.
Background
The coke oven top area refers to the position of the coking chamber over the top brick, and is generally provided with a coal charging hole/smoke guide hole, a rising pipe hole, a fire observation hole, an oven drying hole, a transverse and longitudinal brace groove and an oven top cart foundation. The refractory used in the bricklaying furnace top area has more types, and the common top-spanning brick adopts silica brick, but clay bricks are used on the two sides of the machine coke, coal-charging holes/smoke guide holes and ascending pipes; the lower part of the part right above the carbonization chamber and between the coal charging hole and the smoke guide hole is mostly made of silica bricks and clay bricks, the upper part of the part is mostly made of refractory heat-insulating bricks, and the upper surface of the furnace top area is paved with the pot bricks.
The modern coke oven is continuously developed towards the large-scale direction, the length from the coke oven side to the coke side and the distance between the center lines of the coking chambers are increasingly larger, and the complicated structure of the furnace top area brings challenges to the sealing performance of the furnace top area under the thermal state condition. The upper part and the lower part of the furnace top area adopt refractory materials with different expansion coefficients, so that the furnace top area has expansion difference.
The Chinese patent application with the application publication number CN102146294A discloses a method for improving the air tightness of the top of a coke oven and a top structure, wherein the top of the coke oven is divided into two parts of structures, namely the upper part and the lower part of the top, the upper part and the lower part of the top are respectively built into an independent whole, and a sliding layer is arranged between the upper part and the lower part of the top; when the oven is dried, after the upper part of the oven top and the lower part of the oven top are respectively expanded, grouting is carried out through the grouting holes on the upper part of the oven top to fill the gap of the oven top on the upper part of the oven top and the gap between the lower part of the oven top and the large protection plate, so that mutual leakage between adjacent carbonization chambers is prevented, and the tightness of the coke oven is ensured. The problem that the upper part of the furnace top is damaged by the joint expansion of the lower part of the furnace top due to the uneven expansion of the upper part and the lower part of the furnace top of the coke oven can be effectively solved. However, the furnace end grouting can only improve the sealing performance of the furnace end part (mainly between the furnace end refractory material and the furnace end protection plate), and the overall sealing performance of the furnace top area of the coke oven still needs to be enhanced.
Disclosure of Invention
The invention provides a coke oven top structure, which can ensure the tightness of the coke oven top in the whole expansion process through the mutual engagement structure between the upper brickworks and the lower brickworks; and the raw coke oven gas leakage rate of the whole oven top area of the coke oven in the production process can be effectively reduced by grouting through the reserved middle grouting hole after oven drying.
In order to achieve the purpose, the invention adopts the following technical scheme:
a coke oven top structure, the top area of the coke oven includes upper brickwork, lower brickwork and sliding floor between the upper brickwork and the lower brickwork; along the machine side-coke side direction, a plurality of fire watching holes are arranged above the corresponding combustion chamber in the furnace top area, a plurality of coal charging holes/smoke guiding holes are arranged above the corresponding carbonization chamber, and a riser hole and a furnace end grouting hole are arranged at the position of the furnace end; the furnace top area is also provided with a plurality of middle grouting holes, the middle grouting holes comprise a first middle grouting hole arranged outside the four corners of the coal charging hole/smoke guiding hole and a second middle grouting hole arranged between every two adjacent coal charging holes/smoke guiding holes, and the second middle grouting hole is arranged on two sides of the fire watching hole brick and is respectively arranged in a row with the first middle grouting hole on the corresponding side.
The brickwork in the furnace top area above the combustion chamber is a fire observation hole wall, the upper brickwork corresponding to the fire observation hole wall is composed of clay bricks, and the lower brickwork is composed of silica bricks.
The furnace end grouting hole is arranged on an extension line of a central connecting line of the fire observation hole, the cross section of the furnace end grouting hole is rectangular, and the furnace end grouting hole is formed by communicating holes arranged in the middle of the multilayer furnace end brick.
The cross section of the middle grouting hole is rectangular and is formed by building multiple layers of special-shaped bricks.
The refractory bricks forming the upper masonry are connected by adopting an occlusion structure, and the refractory bricks forming the lower masonry are connected by adopting an occlusion structure; the bottom surface of the upper brickwork in contact with the sliding layer and the top surface of the lower brickwork are both planes.
Height difference exists between each layer of refractory bricks forming the observation hole wall and other refractory bricks on the same layer, and each layer of refractory bricks forming the observation hole wall is lower than other refractory bricks on the same layer.
The sliding layer corresponding to the wall part of the observation hole has a height difference with the sliding layers of other parts, and the sliding layer corresponding to the wall part of the observation hole is lower than the sliding layers of other parts.
The sliding layer is composed of an aluminum foil, a graphite glycerol mixture and an aluminum foil which are sequentially arranged from top to bottom.
Compared with the prior art, the invention has the beneficial effects that:
1) The tightness of the coke oven top in the whole expansion process can be ensured through the mutual meshing structures between the upper brickworks and between the lower brickworks;
2) The raw coke oven is grouted through the reserved middle grouting hole after the oven is dried, so that the raw coke oven gas leakage rate of the whole oven top area of the coke oven in the production process can be effectively reduced;
3) The brickwork on the upper part of the furnace top and the brickwork on the lower part adopt different refractory materials, the two brickworks can slide relatively in the temperature rise process of the coke oven, and the sealing performance after thermal expansion can be effectively improved through a sliding layer;
4) The multilayer refractory bricks forming the observation hole wall, the sliding layers of the corresponding parts and the refractory bricks on the same layer or the sliding layers of other parts have height difference, so that raw coke oven gas in a carbonization chamber can be prevented from leaking into a combustion chamber through the coal charging holes/smoke guide holes in the production process, and the integral tightness of the coke oven is ensured.
Drawings
Fig. 1 isbase:Sub>A front view (viewbase:Sub>A-base:Sub>A in fig. 2) of the coke oven crown structure of the present invention.
Fig. 2 is a view B-B in fig. 1.
Fig. 3 is a view C-C in fig. 1.
Fig. 4 is a view D-D in fig. 1.
In the figure: 1. coal charging hole/smoke guiding hole 2, fire watching hole 3, ascending pipe hole 4, furnace end grouting hole 5, middle grouting hole 6, upper masonry 7, lower masonry 8 and sliding layer
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1-4, the coke oven roof structure of the invention comprises an upper brickwork 6, a lower brickwork 7 and a sliding layer 8 arranged between the upper brickwork 6 and the lower brickwork 7; along the machine side-coke side direction, a plurality of observation holes 2 are arranged above the corresponding combustion chamber in the furnace top area, a plurality of coal charging holes/smoke guide holes 1 are arranged above the corresponding carbonization chamber, and a rising pipe hole 3 and a furnace end grouting hole 4 are arranged at the position of a furnace end; the furnace top area is also provided with a plurality of middle grouting holes 5, the middle grouting holes 5 comprise a first middle grouting hole arranged at the outer sides of four corners of the coal charging hole/smoke guide hole 1 and a second middle grouting hole arranged between the adjacent 2 coal charging/smoke guide holes 1, and the second middle grouting hole is arranged at two sides of the fire hole brick and is respectively arranged in a row with the first middle grouting hole at the corresponding side.
The brickwork in the furnace top area above the combustion chamber is a fire observation hole wall, the brickwork on the upper part corresponding to the fire observation hole wall is composed of clay bricks, and the brickwork on the lower part is composed of silica bricks.
The furnace end grouting hole 4 is arranged on an extension line of a central connecting line of the fire observation hole 2, the cross section of the furnace end grouting hole 4 is rectangular, and the furnace end grouting hole is formed by communicating holes arranged in the middle of the multilayer furnace end bricks.
The cross section of the middle grouting hole 5 is rectangular and is formed by building multiple layers of special-shaped bricks.
The refractory bricks forming the upper brickwork 6 are connected by adopting an occlusion structure, and the refractory bricks forming the lower brickwork 7 are connected by adopting an occlusion structure; the bottom surface of the upper brickwork 6 contacted with the sliding layer 8 and the top surface of the lower brickwork 7 are both planes.
Height difference exists between each layer of refractory bricks forming the observation hole wall and other refractory bricks on the same layer, and each layer of refractory bricks forming the observation hole wall is lower than other refractory bricks on the same layer.
The sliding layer corresponding to the wall part of the observation hole has a height difference with the sliding layers of other parts, and the sliding layer corresponding to the wall part of the observation hole is lower than the sliding layers of other parts.
The sliding layer 8 is composed of an aluminum foil, a graphite glycerin mixture and an aluminum foil which are sequentially arranged from top to bottom.
The coke oven top structure comprises an upper brickwork 6 and a lower brickwork 7, wherein a sliding layer 8 is arranged between the upper brickwork 6 and the lower brickwork 7, the upper brickwork 6 and the lower brickwork 7 corresponding to the wall part of a fire observation hole are respectively made of different refractory materials, a plurality of coal charging holes/smoke guide holes 1 are arranged in the top area of the coke oven, an ascending pipe hole 3 and a furnace end grouting hole 4 are arranged at the head part of the coke oven, and a plurality of middle grouting holes 5 are also arranged along the longitudinal direction of the coke oven.
The slide layer 8 divides the wall of the observation hole into an upper part and a lower part, wherein the refractory material of the part below the slide layer 8 adopts silica bricks, and the refractory material of the part above the slide layer 8 adopts clay bricks.
The opening of the middle grouting hole 5 is rectangular and is formed by building special-shaped bricks; the furnace end grouting hole 4 is formed in the furnace end brick, and the opening shape is rectangular.
A plurality of fire observation hole bricks are arranged at certain intervals on the fire observation hole wall, and the middle parts of the fire observation hole bricks are provided with fire observation holes 2; in the upper brickwork 6 or the lower brickwork 7, the upper surface and the lower surface of the fire observation hole brick are respectively provided with a groove and a protrusion to form a mutually meshed structure, each layer of fire observation hole brick has a certain height difference with other refractory bricks on the same layer, and the lower surface of the fire observation hole brick on the lowest layer in the upper brickwork 6 and the upper surface (namely the surface contacted with the sliding layer 8) of the fire observation hole brick on the uppermost layer in the lower brickwork are both planes.
The sliding layer 8 arranged between the upper masonry 6 and the lower masonry 7 consists of aluminum foil, graphite-glycerol mixture and aluminum foil, and replaces the traditional mortar.
And the refractory bricks of each layer of the coal charging hole/smoke guide hole 1 are hermetically connected through an occlusion structure.
The middle grout holes 5 are positioned at two sides of the fire observation hole bricks, in the construction process of the coke oven top, the refractory bricks at corresponding positions are processed in advance to reserve openings of the middle grout holes (namely special-shaped refractory bricks), and the middle grout holes 5 extend downwards from the oven top quarry bricks to the sliding layer 8. When the furnace is baked to a certain degree, the central grouting hole 5 is irrigated by fire clay, and the furnace top cylinder bricks are built after the irrigation. The problem of poor sealing caused by the fact that mortar joints crack due to inconsistent expansion of the upper brickwork 6 and the lower brickwork 7 after the temperature of the coke oven is raised can be solved through grouting operation of the middle grouting hole 5, and meanwhile the brickwork around the coal charging hole/smoke guide hole 1 can be sealed.
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 as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (8)
1. A coke oven top structure, the top area of the coke oven includes upper brickwork, lower brickwork and sliding floor between the upper brickwork and the lower brickwork; along the machine side-coke side direction, a plurality of observation holes are arranged above the corresponding combustion chamber in the furnace top area, a plurality of coal charging holes/smoke guide holes are arranged above the corresponding carbonization chamber, and a rising pipe hole and a furnace end grouting hole are arranged at the position of the furnace end; the coal-fired boiler is characterized in that the top area of the boiler is also provided with a plurality of middle grouting holes, each middle grouting hole comprises a first middle grouting hole and a second middle grouting hole, the first middle grouting holes are arranged on the outer sides of four corners of each coal charging hole/each smoke guide hole, the second middle grouting holes are arranged between every two adjacent 2 coal charging holes/each smoke guide holes, the second middle grouting holes are arranged on two sides of a fire hole brick and are respectively arranged in a row with the first middle grouting holes on the corresponding side.
2. The coke oven roof structure of claim 1, wherein the roof area brickwork above the combustion chamber is a manhole wall, the upper brickwork corresponding to the manhole wall is made of clay bricks, and the lower brickwork is made of silica bricks.
3. The coke oven crown structure according to claim 1, wherein the burner grouting holes are formed on an extension line of a central connecting line of the fire observation holes, and the cross section of the burner grouting holes is rectangular and is formed by communicating holes formed in the middle of the plurality of layers of burner bricks.
4. The coke oven roof structure according to claim 1, wherein the cross section of the middle grouting hole is rectangular and is formed by building multiple layers of special-shaped bricks.
5. The coke oven roof structure as claimed in claim 1, wherein the refractory bricks constituting the upper brickwork are connected by an engagement structure, and the refractory bricks constituting the lower brickwork are connected by an engagement structure; the bottom surface of the upper brickwork in contact with the sliding layer and the top surface of the lower brickwork are both planes.
6. The coke oven roof structure of claim 1, wherein the layers of refractory bricks comprising the manhole wall are at a different height from the other refractory bricks in the same layer, and the layers of refractory bricks comprising the manhole wall are lower than the other refractory bricks in the same layer.
7. The coke oven roof structure of claim 1, wherein the sliding layer corresponding to the site of the manhole wall has a height difference from the sliding layers corresponding to the other sites, and the sliding layer corresponding to the site of the manhole wall is lower than the sliding layers corresponding to the other sites.
8. The coke oven roof structure as claimed in claim 1, wherein the sliding layer is composed of an aluminum foil, a graphite-glycerol mixture and an aluminum foil which are arranged in sequence from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210904595.8A CN115353894A (en) | 2022-07-29 | 2022-07-29 | Coke oven roof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210904595.8A CN115353894A (en) | 2022-07-29 | 2022-07-29 | Coke oven roof structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115353894A true CN115353894A (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210904595.8A Pending CN115353894A (en) | 2022-07-29 | 2022-07-29 | Coke oven roof structure |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146294A (en) * | 2011-02-23 | 2011-08-10 | 中冶焦耐(大连)工程技术有限公司 | Method for increasing air tightness of coke oven top and oven top structure |
| JP2018145356A (en) * | 2017-03-08 | 2018-09-20 | 新日鐵住金株式会社 | Method for constructing furnace top part of chamber oven type coke oven and structure of furnace top part of chamber oven type coke oven |
| CN109796992A (en) * | 2017-11-16 | 2019-05-24 | 中冶宝钢技术服务有限公司 | Oven top of coke oven is coaling the hot online Replacement procedure in hole |
| CN110066664A (en) * | 2018-01-22 | 2019-07-30 | 五冶集团上海有限公司 | The method for maintaining that a kind of small burner of 7.63 meters of coke ovens is smoldered |
| CN110330986A (en) * | 2019-06-11 | 2019-10-15 | 唐山中润煤化工有限公司 | A method of replacement carbonizing chamber of coke oven bottom brick |
| CN209508137U (en) * | 2018-12-20 | 2019-10-18 | 中冶焦耐(大连)工程技术有限公司 | A kind of oven top structure for coke oven that air-tightness is strong |
| CN110724539A (en) * | 2019-11-28 | 2020-01-24 | 中冶焦耐(大连)工程技术有限公司 | Energy-saving coke oven top |
| CN218025924U (en) * | 2022-07-29 | 2022-12-13 | 中冶焦耐(大连)工程技术有限公司 | Coke oven roof structure |
-
2022
- 2022-07-29 CN CN202210904595.8A patent/CN115353894A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146294A (en) * | 2011-02-23 | 2011-08-10 | 中冶焦耐(大连)工程技术有限公司 | Method for increasing air tightness of coke oven top and oven top structure |
| JP2018145356A (en) * | 2017-03-08 | 2018-09-20 | 新日鐵住金株式会社 | Method for constructing furnace top part of chamber oven type coke oven and structure of furnace top part of chamber oven type coke oven |
| CN109796992A (en) * | 2017-11-16 | 2019-05-24 | 中冶宝钢技术服务有限公司 | Oven top of coke oven is coaling the hot online Replacement procedure in hole |
| CN110066664A (en) * | 2018-01-22 | 2019-07-30 | 五冶集团上海有限公司 | The method for maintaining that a kind of small burner of 7.63 meters of coke ovens is smoldered |
| CN209508137U (en) * | 2018-12-20 | 2019-10-18 | 中冶焦耐(大连)工程技术有限公司 | A kind of oven top structure for coke oven that air-tightness is strong |
| CN110330986A (en) * | 2019-06-11 | 2019-10-15 | 唐山中润煤化工有限公司 | A method of replacement carbonizing chamber of coke oven bottom brick |
| CN110724539A (en) * | 2019-11-28 | 2020-01-24 | 中冶焦耐(大连)工程技术有限公司 | Energy-saving coke oven top |
| CN218025924U (en) * | 2022-07-29 | 2022-12-13 | 中冶焦耐(大连)工程技术有限公司 | Coke oven roof structure |
Non-Patent Citations (1)
| Title |
|---|
| 高海潮 等编著: "《马钢炼铁技术与管理》", 31 January 2018, 冶金工业出版社, pages: 263 * |
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