CN117965182A - Coke oven combustion chamber top structure - Google Patents
Coke oven combustion chamber top structure Download PDFInfo
- Publication number
- CN117965182A CN117965182A CN202311370555.0A CN202311370555A CN117965182A CN 117965182 A CN117965182 A CN 117965182A CN 202311370555 A CN202311370555 A CN 202311370555A CN 117965182 A CN117965182 A CN 117965182A
- Authority
- CN
- China
- Prior art keywords
- coke
- combustion chamber
- hole
- bricks
- crossing
- 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.)
- Pending
Links
- 239000000571 coke Substances 0.000 title claims abstract description 74
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 37
- 239000011449 brick Substances 0.000 claims abstract description 78
- 238000000034 method Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 9
- 230000001174 ascending effect Effects 0.000 description 4
- 238000003763 carbonization Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005338 heat storage 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
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to a top structure of a combustion chamber of a coke oven, which comprises a crossing hole, a top cover layer and a fire observation hole layer which are sequentially arranged from bottom to top; the thickness of the cover top brick of the crossing hole at the machine side furnace end is smaller than that of the cover top brick of the crossing hole at the coke side furnace end, namely the height of the crossing hole at the machine side furnace end is higher than that of the crossing hole at the coke side furnace end, so that the maturity of coke at the machine side furnace end is ensured; the wedge-shaped sealing structure is adopted between the cover top bricks and the side wall bricks at the crossing holes, so that the overall structural strength of the crossing holes is improved, the static strength of the combustion chamber is enhanced, the sealing performance of the top area of the combustion chamber is improved, and the service life of the coke oven body is prolonged.
Description
Technical Field
The invention relates to the technical field of coke ovens, in particular to a top structure of a combustion chamber of a coke oven.
Background
The coke oven body is divided into a regenerator, a chute, a combustion chamber and a furnace top according to the parts. The combustion chamber is generally composed of a plurality of pairs of duplex flame paths, each pair of duplex flame paths comprises an ascending flame path and a descending flame path, the ascending flame path and the descending flame path are connected through crossing holes, waste gas generated in combustion in the ascending flame path enters the descending flame path through crossing holes, and is collected into a small flue of a heat storage chamber after passing through the inclined path and the heat storage chamber, and then is collected into the flue through an exchange shutter, and finally is discharged through a chimney after being purified.
The cross hole at the top of the combustion chamber not only determines the static strength of the combustion chamber and the tightness of the top of the combustion chamber, but also directly determines the heating level value of the coke oven. The heating level is an extremely important size in the coke oven body structure, and too small heating level can cause the temperature of the top space of the carbonization chamber to be too high, increase the carbon deposit on the oven top and influence the quality and yield of the coking products; excessive heating levels can lower the upper coke cake temperature, causing the top coke to be unripe. Particularly, the maturity of coke at the top of the machine side furnace end of a tamping coke oven is often poorer than that of the coke side.
The Chinese patent application with the application publication number of CN 116083095A discloses a coke oven combustion chamber with a staggered heating horizontal structure, which comprises a combustion chamber, wherein the combustion chamber consists of a plurality of duplex flame paths along the machine side-coke side direction, the tops of 2 duplex flame paths forming the duplex flame paths are communicated through a crossing hole, carbonization chambers are arranged on two sides of the combustion chamber, and the distance between the tops of the carbonization chambers and the tops of the duplex flame paths is the heating level of the coke oven; along the machine side-coke side direction, the heating level of the coke oven is gradually increased. According to the different operation characteristics of the machine side and the coke side, the heating levels of the machine side and the coke side are set to different values, the uniformity and the maturity of the heating of the coke of the machine side and the coke side are considered, and the coke quality problems such as coke generation or coke overripening are avoided. More specifically, the bottom surfaces of the tops of the carbonization chambers are on the same horizontal plane along the machine side-coke side direction, the top surfaces of the vertical flame paths are sequentially lowered, and the sizes of the crossing holes are the same.
Disclosure of Invention
The invention provides a top structure of a coke oven combustion chamber, wherein cover top bricks of crossing holes at an oven head of an oven machine side and an oven head of the oven machine side are of different thicknesses, so that the crossing hole height at the oven head of the oven machine side is higher than the crossing hole height at the oven head of the oven machine side, thereby ensuring the maturity of coke at the oven head of the oven machine side; the wedge-shaped sealing structure is adopted between the cover top bricks and the side wall bricks at the crossing holes, so that the overall structural strength of the crossing holes is improved, the static strength of the combustion chamber is enhanced, the sealing performance of the top area of the combustion chamber is improved, and the service life of the coke oven body is prolonged.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
A top structure of a coke oven combustion chamber comprises a crossing hole, a top cover layer and a fire-viewing hole layer which are sequentially arranged from bottom to top; the first layer of bricks above the corresponding crossing holes of the cover top layer are cover top bricks, and the cover top bricks are wedge-shaped cover top bricks; the thickness of the cover top brick of the crossing hole at the machine side furnace end is smaller than that of the cover top brick of the crossing hole at the coke side furnace end, namely the height of the crossing hole at the machine side furnace end is higher than that of the crossing hole at the coke side furnace end.
Further, the crossing hole is formed by building an upper top cover brick, side wall bricks on two sides and a lower bottom brick; the two ends of the wedge-shaped top brick extend to the outside of the top edge of the corresponding crossing hole and are matched with the side wall bricks on the two sides for masonry.
Further, the crossing hole is an octagonal hole.
Furthermore, the wedge-shaped top brick is characterized in that chamfer angles are respectively arranged at two ends of the top of the rectangular brick body.
Further, the machine side furnace end refers to a region between the first vertical flame path and the fourth vertical flame path of the machine side; the coke side furnace end refers to an area between the first vertical flame path and the fourth vertical flame path of the coke side.
Further, the height of the crossing hole at the machine side furnace end is 20-100 mm higher than that at the coke side furnace end.
Further, the thickness of the side wall brick is 100-170 mm.
Further, the fire hole layer is built by large bricks, and the cross section area of the large bricks is larger than that of the capping bricks.
Compared with the prior art, the invention has the beneficial effects that:
1) The cover top bricks of the crossing holes at the machine side furnace end and the coke side furnace end are of different thicknesses, so that the crossing hole at the machine side furnace end is higher than the crossing hole at the coke side furnace end, thereby ensuring the maturity of coke at the machine side furnace end;
2) The wedge-shaped sealing structure is adopted between the cover top bricks and the side wall bricks at the crossing holes, so that the overall structural strength of the crossing holes is improved, the static strength of the combustion chamber is enhanced, the sealing performance of the top area of the combustion chamber is improved, and the service life of the coke oven body is prolonged;
3) The top structure of the combustion chamber has good integrity, when the combustion chamber of the coke oven needs to be maintained, the construction method is suitable for adopting a suspended ceiling method, the construction amount is small, the process is rapid and convenient, the damage degree of the furnace body of the coke oven is low, the rapid maintenance of the coke oven is facilitated, and the production is quickly restored.
Drawings
FIG. 1 is a top view of a top structure of a combustion chamber of a coke oven according to the present invention.
Fig. 2 is A-A view of fig. 1.
Fig. 3 is a B-B view in fig. 1.
In the figure: 1. the side furnace head 2, the coke oven furnace head 3, the duplex fire channel 4, the spanning hole 5, the cover top layer 6, the viewing hole layer 7, the cover top brick 8, the side wall brick 9 and the bottom brick
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
as shown in fig. 1-3, the top structure of the combustion chamber of the coke oven comprises a crossing hole 4, a top cover layer 5 and a fire-viewing hole layer 6 which are sequentially arranged from bottom to top; the first layer of bricks which correspond to the covering layer 5 and span the position right above the hole 4 are covering bricks 7, and the covering bricks 7 are wedge-shaped covering bricks; the thickness of the cover top bricks 7 crossing the holes 4 at the machine side furnace end 1 is smaller than the thickness of the cover top bricks 7 crossing the holes 4 at the coke side furnace end 2, namely the height of the crossing holes 4 at the machine side furnace end 1 is higher than the height of the crossing holes 4 at the coke side furnace end 2.
Further, the crossing hole 4 is formed by building an upper cover top brick 7, side wall bricks 8 on two sides and a lower bottom brick 9; the two ends of the wedge-shaped top cover bricks extend to the outside of the top edges of the corresponding spanning holes 4 and are matched with the side wall bricks 8 on the two sides for masonry.
Further, the crossing hole 4 is an octagonal hole.
Furthermore, the wedge-shaped top brick is characterized in that chamfer angles are respectively arranged at two ends of the top of the rectangular brick body.
Further, the machine side furnace end 1 refers to a region between a first fire channel and a fourth fire channel of the machine side; the coke side furnace end 2 refers to a region between the first vertical flame path and the fourth vertical flame path of the coke side.
Further, the height of the crossing hole 4 at the machine side furnace end 1 is 20-100 mm higher than the height of the crossing hole 4 at the coke side furnace end 2.
Further, the thickness of the side wall brick 8 is 100-170 mm.
Further, the observation hole layer 6 is built by large bricks, and the cross-sectional area of the large bricks is larger than that of the capping bricks.
The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present invention, but the scope of the present invention is not limited to the following examples.
[ Example ]
In this embodiment, the top structure of the coke oven combustion chamber comprises a spanning hole 4, a top cover layer 5 and a fire-viewing hole layer 6 which are sequentially arranged from bottom to bottom.
The coke oven combustion chamber consists of a plurality of pairs of duplex fire channels 3, the ascending fire channels are communicated with the descending fire channels through crossing holes 4, and a top cover layer 5 and a fire observation hole layer 6 are areas where the coke oven combustion chamber is connected with the oven top.
In this embodiment, the cross hole 4 has an octagonal hole structure.
In this embodiment, the thicknesses of the cover top bricks 7 of the crossing holes at the machine side furnace end 1 and the coke side furnace end 2 are different, and the cover top bricks 7 of the crossing holes 4 at the machine side furnace end 1 are thinner by 80mm than the cover top bricks 7 of the crossing holes 4 at the coke side furnace end 2, i.e. the height of the crossing holes 4 at the machine side furnace end 1 is 80mm higher than the height of the crossing holes 4 at the coke side furnace end 2.
In this embodiment, the machine side burner 1 is a region corresponding to the first to fourth vertical flame paths of the machine side, and the coke side burner 2 is a region corresponding to the Jiao Cedi to fourth vertical flame paths.
The top cover brick 7 is a first layer brick positioned right above the crossing hole 4 in the top cover layer 5, and the top cover brick 7 adopts a wedge-shaped top cover brick, as shown in fig. 3, the two ends of the top cover brick are respectively provided with a chamfer angle on the basis of a rectangular brick body, and the two ends of the wedge-shaped top cover brick extend into side wall bricks 8 on two sides of the crossing hole 4, so that a wedge-shaped sealing structure is formed.
In this embodiment, the sidewall brick 8 spanning the hole 4 has a thickness of 120mm.
The viewing hole layer 6 is built by large bricks, and the length and the width of the large bricks are 1.2 times of the corresponding length and width of the cover top bricks.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. A top structure of a coke oven combustion chamber comprises a crossing hole, a top cover layer and a fire-viewing hole layer which are sequentially arranged from bottom to top; the method is characterized in that a first layer of bricks above the corresponding crossing holes of the cover top layer are cover top bricks, and the cover top bricks are wedge-shaped cover top bricks; the thickness of the cover top brick of the crossing hole at the machine side furnace end is smaller than that of the cover top brick of the crossing hole at the coke side furnace end, namely the height of the crossing hole at the machine side furnace end is higher than that of the crossing hole at the coke side furnace end.
2. The coke oven combustion chamber top structure of claim 1, wherein the spanning hole is formed by building an upper roof brick, side wall bricks on two sides and a lower bottom brick; the two ends of the wedge-shaped top brick extend to the outside of the top edge of the corresponding crossing hole and are matched with the side wall bricks on the two sides for masonry.
3. The coke oven combustion chamber roof structure of claim 1, wherein the spanning aperture is an octagonal aperture.
4. The coke oven combustion chamber top structure of claim 1, wherein the wedge-shaped top cover bricks are respectively provided with chamfers at two ends of the top on the basis of rectangular brick bodies.
5. The coke oven combustion chamber top structure of claim 1, wherein the machine side burner is a region between the machine side first vertical flame path and the fourth vertical flame path; the coke side furnace end refers to an area between the first vertical flame path and the fourth vertical flame path of the coke side.
6. A coke oven combustion chamber top structure as claimed in claim 1, wherein the cross hole height at the machine side burner is 20-100 mm higher than the cross hole height at the coke side burner.
7. The coke oven combustion chamber top structure of claim 2, wherein the sidewall brick has a thickness of 100-170 mm.
8. The coke oven combustion chamber roof structure of claim 1, wherein the view port layer is constructed of large bricks having a cross-sectional area greater than a cross-sectional area of the roof brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311370555.0A CN117965182A (en) | 2023-10-20 | 2023-10-20 | Coke oven combustion chamber top structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311370555.0A CN117965182A (en) | 2023-10-20 | 2023-10-20 | Coke oven combustion chamber top structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117965182A true CN117965182A (en) | 2024-05-03 |
Family
ID=90854208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311370555.0A Pending CN117965182A (en) | 2023-10-20 | 2023-10-20 | Coke oven combustion chamber top structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117965182A (en) |
-
2023
- 2023-10-20 CN CN202311370555.0A patent/CN117965182A/en active Pending
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