CN118048162A - Method for treating leakage of raw gas in coking chamber of coke oven to vertical flame path - Google Patents
Method for treating leakage of raw gas in coking chamber of coke oven to vertical flame path Download PDFInfo
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- CN118048162A CN118048162A CN202211426755.9A CN202211426755A CN118048162A CN 118048162 A CN118048162 A CN 118048162A CN 202211426755 A CN202211426755 A CN 202211426755A CN 118048162 A CN118048162 A CN 118048162A
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- steel pipe
- temperature measuring
- coke oven
- raw gas
- hole
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- 239000000571 coke Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004939 coking Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 239000011449 brick Substances 0.000 claims abstract description 25
- 239000004927 clay Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 238000009529 body temperature measurement Methods 0.000 abstract description 4
- 239000002817 coal dust Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 238000011049 filling Methods 0.000 abstract description 2
- 230000000630 rising effect Effects 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 9
- 238000003763 carbonization Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005360 mashing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Landscapes
- Coke Industry (AREA)
Abstract
The invention relates to a method for treating leakage of raw gas in a coking chamber of a coke oven to a vertical flame path, belonging to the technical field of coke oven components. According to the method, a special steel pipe is inserted into a temperature measuring hole of the vertical fire channel, the bottom end of the temperature measuring hole of the vertical fire channel is lower than the lower edge of a baking hole, so that raw gas leaked from the baking hole to the vertical fire channel can only rise along a gap between the steel pipe and the wall surface of a pipe brick in the temperature measuring hole of the vertical fire channel when floating upwards, the temperature measurement can be carried out through the vertical fire channel in the steel pipe, substances such as coal dust, coke powder and tar contained in the raw gas are easy to gradually gather in the gap between the outer wall of the steel pipe and the inner wall of the pipe brick to form a filling plug so as to prevent the raw gas from rising and then pulling out, and the leakage point at the baking hole is also converged with coal dust, coke powder and tar, so that the leakage point at the baking hole is automatically sealed for a long time; can be called three at a time.
Description
Technical Field
The invention relates to a method for treating leakage of a vertical flame path of a coke oven head of a coke oven, which is particularly suitable for treating leakage of raw gas from a carbonization chamber in a flame path at the head of the coke oven head of a top-loading coke oven, and belongs to the technical field of coke oven components.
Background
Coking is a process of producing coke, coke oven gas and chemical products by dry distillation of matched coking coal isolated from air. The main equipment for coking is a coke oven. The coke oven body consists of a carbonization chamber, a combustion chamber, a regenerator, a chute area, a furnace top area and a basic part. The coking chamber is a furnace chamber for coking coal materials to be separated from air and dry distilled into coke, combustion chambers for providing heat by gas combustion are arranged at two sides of the coking chamber, the combustion chambers are divided into a plurality of vertical flame paths, and the combustion chambers are separated from the coking chamber by furnace walls.
For heat transfer during the baking process, a plurality of baking holes communicated with a vertical flame path of the combustion chamber are reserved in the top space of the carbonization chamber, and the baking holes are blocked by plug bricks before production. But is influenced by the on-off vibration of the coke side furnace door, the friction of the coal leveling rod and the pressure fluctuation in the production process, the plug bricks or the plug brick seat bricks which block the baking furnace hole can be loosened, so that the raw gas of the carbonization chamber is leaked to the combustion chamber in series. The continuous raw gas which is leaked in series can not only influence the normal heating in the vertical flame path, but also be pulled out (thermal buoyancy) from a temperature measuring hole (also called a fire viewing hole) at the top of the vertical flame path, and tar and graphite contained in the long-term raw gas can block the temperature measuring hole, so that the measurement of the temperature in the vertical flame path is influenced.
The prior art adopts a method for plugging a drying furnace hole, such as the method for maintaining a plug brick maintenance structure of a drying hole of a sealing coke oven disclosed in China patent publication No. CN105419822A, wherein the method comprises the steps of feeding a plug from a viewing hole to plug the viewing hole below the drying hole (drying furnace hole), then grouting slurry to plug the drying hole from one side of a combustion chamber, and mashing the dry slurry in the viewing hole to recover the smoothness of the viewing hole after the slurry is dried. The prior art also has the problem of smearing and repairing the leakage points of the furnace holes from one side of the carbonization chamber. The leakage points still can be generated after the long time of the method for plugging the oven Kong Loudian, and the leakage of the raw gas in the carbonization chamber can not be radically treated.
Disclosure of Invention
The invention aims to solve the technical problems that: how to ensure that the serial leakage of the raw gas in the carbonization chamber of the top-loading coke oven can not influence the temperature measurement and heating in the vertical flame path.
The technical scheme provided by the invention for solving the technical problems is as follows: a method for treating the serial leakage of raw gas in a coking chamber of a coke oven to a vertical flame path comprises the following steps:
a. the steel pipe was manufactured according to the following requirements
One end of the steel pipe is provided with a circle of baffle plate, the length of the steel pipe is larger than the height from a baking hole of the coke oven to the lower edge of a top layer pipe brick of a vertical fire path temperature measuring hole of the coke oven, and the outer diameter of the steel pipe is smaller than the inner diameter of the vertical fire path temperature measuring hole;
b. removing the top layer tube bricks in the vertical flame path temperature measuring holes with raw gas leakage on the top surface of the coke oven, and plastering clay fireclay on the convex table surface of the next layer tube bricks on the top layer in the temperature measuring holes;
c. Placing the steel pipe along the vertical flame path temperature measuring hole, enabling a retainer plate at one end of the steel pipe to be clamped and attached to the convex table surface, enabling the other end of the steel pipe inserted into the vertical flame path temperature measuring hole to be lower than the lower edge of the baking furnace hole, and forming a gap between the outer wall of the steel pipe and the inner wall of a pipe brick in the vertical flame path temperature measuring hole;
d. and re-laying the top layer tube bricks in the vertical flame path temperature measuring holes.
Further, for the vertical flame path provided with the steel pipe, the pressure of the gas collecting pipe at the corresponding section of the vertical flame path is regulated for three days, and the normal pressure of the gas collecting pipe is recovered after no raw gas is leaked in the vertical flame path.
Further, the pressure of the heightened gas collecting tube is 5-15pa higher than the normal value.
The beneficial effects of the invention are as follows: because the special steel pipe is inserted into the vertical flame path temperature measuring hole, the other end (bottom end) of the steel pipe inserted into the vertical flame path temperature measuring hole is lower than the lower edge of the baking hole, and therefore raw gas leaked from the baking hole to the vertical flame path can only rise along the gap between the steel pipe and the wall surface of the pipe brick in the vertical flame path temperature measuring hole and then be pulled out, and three effects are brought: 1) Raw gas is not contained in the steel pipe, so that temperature measurement can be performed through a fire opposition channel in the steel pipe, and the temperature measurement is not affected by any influence; 2) Substances such as coal dust, coke powder and tar contained in the raw gas are easy to gradually gather in a gap between the outer wall of the steel pipe and the inner wall of the pipe brick to form a filling plug, so that the raw gas is prevented from being pulled out after rising; 3) As the raw gas floats upwards through the gap between the outer wall of the steel pipe and the inner wall of the pipe brick and finally cannot float upwards, the resistance of the raw gas passing through the leakage point at the oven hole is gradually increased, and the flow speed is reduced, so that the raw gas is converged with coal dust, coke powder and tar at the leakage point at the oven hole, and the leakage point at the oven hole is automatically sealed over time; can be called three at a time.
Drawings
The method for treating the leakage of the raw gas in the coking chamber of the coke oven to the vertical flame path is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a partial cross-sectional structure of a coke oven according to an exemplary abatement process.
Detailed Description
Examples
The coke oven related to the method for treating the serial leakage of raw gas in the coking chamber of the coke oven to the vertical flame paths is a 60-hole coke oven with the height of 7 meters in the coking chamber 1, each combustion chamber 2 is divided into 34 vertical flame paths, each coking chamber 1 is provided with 36 baking holes, the turnover time of coke oven production is 22 hours, and the pressure of a gas collecting pipe is 150Pa. The treatment method comprises the following steps:
a. The steel pipe 3 was produced according to the following requirements
One end of the steel pipe 3 is provided with a circle of baffle plate, the length of the steel pipe 3 is larger than the height from the oven hole 4 of the coke oven to the top surface of the coke oven, and the outer diameter of the steel pipe 3 is smaller than the inner diameter of the vertical fire path temperature measuring hole 5. In the embodiment, the height from the lower edge of the oven hole 4 to the top surface of the coke oven is 1490mm, the inner diameter of the vertical flame path temperature measuring hole 5 is 120mm, the height from the top surface of the coke oven to the lower edge of the top layer pipe brick of the vertical flame path temperature measuring hole 5 is 210mm, 1490-210=1280 mm, the length of the steel pipe 3 is 1400mm, and the outer diameter of the steel pipe 3 is 100mm; the baffle plate is welded with the outer wall of the steel pipe.
B. Removing the top layer tube bricks in the vertical flame path temperature measuring holes 5 with raw gas leakage on the top surface of the coke oven, forming a convex table surface by the next layer tube bricks on the top layer, taking 140mm of the outer diameter of the baffle plate if the outer diameter of the convex table surface is about 150mm, and then plastering clay fireclay on the convex table surface if the inner diameter of the baffle plate is the same as the outer diameter of the steel tube 3.
C. Placing a steel pipe 3 along the vertical flame path temperature measuring hole 5, enabling a retainer plate at one end of the steel pipe 3 to be stuck on the boss surface, at the moment, inserting the steel pipe 3 into the lower edge of the furnace drying hole 4 at the other end of the vertical flame path temperature measuring hole 5, and forming a gap between the outer wall of the steel pipe 3 and the inner wall of the inner pipe brick of the vertical flame path temperature measuring hole 5; the gap=120-100=20 mm.
D. the top layer tube bricks in the vertical flame path temperature measuring holes 5 with raw gas leakage are rebuilt.
In use, the vertical fire channel provided with the steel pipe can be used for three days (other time periods can be also used, such as two days, four days and the like) when the pressure of the gas collecting tube at the corresponding section of the vertical fire channel is increased, and the normal gas collecting tube pressure is recovered after no raw gas leaks in the vertical fire channel. The pressure of the gas collecting tube can be 10Pa higher than the normal value, or 5Pa, 15Pa Pa and the like, and generally 5-15Pa is adopted.
The foregoing description is only of the preferred embodiments of the invention, but the invention is not limited thereto, and all equivalents and modifications according to the concept of the invention and the technical solutions thereof are intended to be included in the scope of the invention.
Claims (3)
1. A method for treating the serial leakage of raw gas in a coking chamber of a coke oven to a vertical flame path is characterized by comprising the following steps:
a. the steel pipe was manufactured according to the following requirements
One end of the steel pipe is provided with a circle of baffle plate, the length of the steel pipe is larger than the height from a baking hole of the coke oven to the lower edge of a top layer pipe brick of a vertical fire path temperature measuring hole of the coke oven, and the outer diameter of the steel pipe is smaller than the inner diameter of the vertical fire path temperature measuring hole;
b. removing the top layer tube bricks in the vertical flame path temperature measuring holes with raw gas leakage on the top surface of the coke oven, and plastering clay fireclay on the convex table surface of the next layer tube bricks on the top layer in the temperature measuring holes;
c. Placing the steel pipe along the vertical flame path temperature measuring hole, enabling a retainer plate at one end of the steel pipe to be clamped and attached to the convex table surface, enabling the other end of the steel pipe inserted into the vertical flame path temperature measuring hole to be lower than the lower edge of the baking furnace hole, and forming a gap between the outer wall of the steel pipe and the inner wall of a pipe brick in the vertical flame path temperature measuring hole;
d. and re-laying the top layer tube bricks in the vertical flame path temperature measuring holes.
2. The method for treating the leakage of raw gas in the coking chamber of the coke oven to the vertical flame path is characterized in that: for the vertical fire channel provided with the steel pipe, the pressure of the gas collecting pipe at the corresponding section of the vertical fire channel is regulated to be used for three days, and the normal pressure of the gas collecting pipe is recovered after no raw gas is leaked in the vertical fire channel.
3. The method for treating the leakage of raw gas in the coking chamber of the coke oven to the vertical flame path according to claim 2, which is characterized in that: the pressure of the heightened gas collecting tube is 5-15pa higher than the normal value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211426755.9A CN118048162A (en) | 2022-11-15 | 2022-11-15 | Method for treating leakage of raw gas in coking chamber of coke oven to vertical flame path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211426755.9A CN118048162A (en) | 2022-11-15 | 2022-11-15 | Method for treating leakage of raw gas in coking chamber of coke oven to vertical flame path |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118048162A true CN118048162A (en) | 2024-05-17 |
Family
ID=91048862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211426755.9A Pending CN118048162A (en) | 2022-11-15 | 2022-11-15 | Method for treating leakage of raw gas in coking chamber of coke oven to vertical flame path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118048162A (en) |
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2022
- 2022-11-15 CN CN202211426755.9A patent/CN118048162A/en active Pending
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