CN220393609U - Waste gas shutter for reheating coke oven - Google Patents
Waste gas shutter for reheating coke oven Download PDFInfo
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- CN220393609U CN220393609U CN202322099197.6U CN202322099197U CN220393609U CN 220393609 U CN220393609 U CN 220393609U CN 202322099197 U CN202322099197 U CN 202322099197U CN 220393609 U CN220393609 U CN 220393609U
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- 239000000571 coke Substances 0.000 title claims abstract description 62
- 239000002912 waste gas Substances 0.000 title claims abstract description 33
- 238000003303 reheating Methods 0.000 title claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 112
- 238000006243 chemical reaction Methods 0.000 claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 21
- 238000002485 combustion reaction Methods 0.000 description 11
- 238000005338 heat storage Methods 0.000 description 10
- 230000001174 ascending effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Coke Industry (AREA)
Abstract
The utility model relates to an exhaust gas shutter for a reheating coke oven, which comprises a shutter valve body, an exhaust gas mound, a conversion adjusting channel, a gas small flue connecting pipe, an air small flue connecting pipe and a lean gas pipe; the conversion regulating channel consists of 2 mutually independent channels I and II, wherein the channel I is provided with a large air door, and the channel II is provided with a small air door; one end of the first channel and one end of the second channel, which are connected with the shutter valve body, are changed into 2 channels which are separated up and down, and the opening and the closing of the channels are controlled by the first weight disc and the second weight disc; the air flow can be adjusted through adjusting baffles and air adjusting plates which are arranged at the large air door and the small air door, and the waste gas resistance can be adjusted through the first adjusting plate and the second adjusting plate; the adjusting means are more, and the adjusting can be respectively carried out at different positions in different production processes.
Description
Technical Field
The utility model relates to the technical field of coke ovens, in particular to an exhaust gas shutter for a reheating coke oven.
Background
Along with the continuous improvement of Jiao Lujie energy environmental protection requirements, the large-scale and automatic coke oven is a development trend of coke oven technology, and the adjustment capability and automatic control level of a coke oven heating system are significant for reducing coking energy consumption and NOx emission. At present, large-scale steel and iron united enterprises mostly adopt a reheating coke oven, and the reheating coke oven refers to a coke oven which can be heated by coke oven gas or lean gas (blast furnace gas).
The Chinese patent with the publication number of CN 219032073U discloses a regenerative coke oven system which comprises a mixed gas feeding unit, a coke oven gas feeding unit, an exhaust gas shutter, a coke oven body and an exhaust gas feeding unit; after an exhaust main pipe is directly connected with an exhaust shutter, when the coke oven is heated by adopting mixed gas, a coke oven gas supply unit is closed, the exhaust gas supply unit is closed, the mixed gas supply unit is opened, the mixed gas enters a gas heat storage chamber through the exhaust shutter, air enters an air heat storage chamber through an air door of the exhaust shutter, and two gases enter the bottom part and the middle upper part of a vertical flame path respectively for combustion heating; when the coke oven is heated by coke oven gas, the coke oven gas supply unit is opened, the gas supply of the mixed gas supply unit is cut off, the waste gas supply unit is opened, air enters the air regenerator through the air door of the waste gas shutter, and waste gas enters the gas regenerator through the waste gas supply unit.
The Chinese patent application with the application publication number of CN 113122283A discloses a regulating method of a reheating type multi-section heating coke oven heating system, wherein when coke oven gas is used for heating, blast furnace gas stops being fed; coke oven gas enters the vertical flame path from the first bottom gas outlet through the pipe brick channel; combustion air is introduced through an exhaust gas shutter, enters the lower part of the vertical fire channel through an ascending air flow heat storage chamber A and an ascending air flow heat storage chamber B, and exhaust gas generated by combustion enters a branch flue through a descending air flow heat storage chamber; when the blast furnace gas is adopted for heating, the coke oven gas stops feeding; the blast furnace gas reaches the bottom of the vertical flame path through the ascending gas flow heat storage chamber B and enters the vertical flame path through the second bottom gas outlet; air enters the vertical flame path after passing through the ascending air flow heat storage chamber A, and the air and the ascending air flow heat storage chamber A are mixed and combusted in the vertical flame path, and generated waste gas enters the gas separation flue after passing through the descending air flow heat storage chamber.
Both of the above two reheating coke oven heating systems involve the exhaust gas shutter, but do not involve the specific structure of the exhaust gas shutter, or a conventional exhaust gas shutter is adopted. The waste gas shutter of the traditional reheating coke oven has huge volume and few gas resistance adjusting means, and especially for the coke oven with multi-stage heating, the distribution of heating air is difficult to meet the requirement, the excess coefficient of combustion air has to be increased, so that the waste gas amount is increased, more heat is consumed, and the treatment capacity of a flue gas desulfurization and denitrification system is increased.
The waste gas shutter realizes the opening and closing of the waste gas mound disc and the air throttle through exchanging the transmission brace, thereby realizing the switching of air flow. The installation accuracy of the exchange transmission brace is low, accurate adjustment of the opening of the air flow by the waste gas weight disc and the air damper is difficult to realize, and an additional adjusting means is required to be added. The existing waste gas shutter for the reheating coke oven has few adjusting means and heavy structure, and the requirements of the heating system of the coke oven on accurate adjustment of airflow flow and resistance through the waste gas shutter are difficult to meet.
Disclosure of Invention
The utility model provides an exhaust gas shutter for a reheating type coke oven, wherein a conversion regulating channel consists of 2 mutually independent channels I and channels II, the channels I are provided with large air doors, and the channels II are provided with small air doors; one end of the first channel and one end of the second channel, which are connected with the shutter valve body, are changed into 2 channels which are separated up and down, and the opening and the closing of the channels are controlled by the first weight disc and the second weight disc; the air flow can be adjusted through adjusting baffles and air adjusting plates which are arranged at the large air door and the small air door, and the waste gas resistance can be adjusted through the first adjusting plate and the second adjusting plate; the adjusting means are more, and the adjusting can be respectively carried out at different positions in different production processes.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
an exhaust gas shutter for a reheating coke oven comprises a shutter valve body, an exhaust gas mound, a conversion adjusting channel, a gas small flue connecting pipe, an air small flue connecting pipe and a lean gas pipe; the conversion adjusting channel consists of a first channel, a second channel, a large air door, a small air door, a first adjusting plate and a second adjusting plate; the first channel and the second channel are arranged side by side in an inclined way to form a body of a conversion and adjustment channel, an opening at the upper end of the first channel is communicated with an air small flue connecting pipe, and a large air door is arranged at the top of the first channel; the opening at the upper end of the second channel is communicated with a small gas flue connecting pipe, and a small air door is arranged at the top of the second channel; the lower end opening of the first channel and the lower end opening of the second channel are communicated with the shutter valve body; the waste gas block consists of a first block disc, a second block disc and a block rod, wherein the first block disc is arranged at an opening at the lower end of a corresponding channel in the shutter valve body, the second block disc is arranged at an opening at the lower end of the corresponding channel, and the first block disc and the second block disc are driven by the block rod to synchronously move up and down; the bottom opening of the shutter valve body is connected with the main flue of the coke oven; the bottom of the second channel is connected with a lean gas pipe; an adjusting plate I is arranged at the opening of the lower end of the first channel, and an adjusting plate II is arranged at the opening of the lower end of the second channel.
Further, a horizontal section I is arranged at the opening of the lower end of the first channel, and an adjusting plate I is arranged in the horizontal section I; the lower end opening of the second channel is provided with a second horizontal section, and the second adjusting plate is arranged in the second horizontal section.
Further, the upper part and the lower part of the shutter valve body are respectively provided with a fixed slip ring at the outer side of the weight rod.
Furthermore, the big air door and the small air door are of a turning plate structure, and the inner sides of the big air door and the small air door are respectively provided with an adjusting baffle.
Further, an air adjusting plate is arranged in the small air flue connecting pipe.
Compared with the prior art, the utility model has the beneficial effects that:
1) The exhaust gas shutter has a compact structure, the channel I and the channel II are controlled to be opened and closed by adopting 2 weight plates arranged up and down, and the occupied installation space is small under the condition that the air flow paths are equal;
2) The air quantity and the waste gas resistance can be respectively adjusted by a plurality of adjusting means, and can be respectively adjusted at different positions in different production processes, so that the adjusting precision is high;
3) The air flow is regulated by adopting the regulating plate, so that the installation accuracy of the exchange transmission system has little influence on the resistance and flow of the waste gas.
Drawings
Fig. 1 is a plan view of an exhaust gas shutter for a reheat coke oven according to the present utility model.
Fig. 2 is a sectional view A-A in fig. 1.
In the figure: 1. the gas-saving device comprises a shutter valve body 2, a conversion adjusting channel 3, a gas small flue connecting pipe 4, a large air door 5, a small air door 6, a lean gas pipe 7, an air small flue connecting pipe 8, a first adjusting plate 9, a second adjusting plate 10, a first weight disc 11, a second weight disc 12 and a weight rod
Detailed Description
The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:
as shown in fig. 1 and 2, the exhaust gas shutter for the reheating type coke oven comprises a shutter valve body 1, an exhaust gas mound, a conversion adjusting channel 2, a gas small flue connecting pipe 3, an air small flue connecting pipe 7 and a lean gas pipe 6; the conversion adjusting channel 2 consists of a channel I, a channel II, a large air door 4, a small air door 5, an adjusting plate I8 and an adjusting plate II 9; the first channel and the second channel are arranged side by side in an inclined way to form a body of the conversion and adjustment channel 2, an opening at the upper end of the first channel is communicated with an air small flue connecting pipe 7, and a big air door 4 is arranged at the top of the first channel; the upper end opening of the second channel is communicated with a small gas flue connecting pipe 3, and a small air door 5 is arranged at the top of the second channel; the lower end opening of the first channel and the lower end opening of the second channel are communicated with the shutter valve body 1; the waste gas block consists of a first block disc 10, a second block disc 11 and a block rod 12, wherein the first block disc 10 is arranged at an opening at the lower end of a corresponding channel in the shutter valve body 1, the second block disc 11 is arranged at an opening at the lower end of the corresponding channel, and the first block disc 10 and the second block disc 11 are driven by the block rod 12 to synchronously move up and down; the bottom opening of the shutter valve body 1 is connected with a main flue of the coke oven; the bottom of the second channel is connected with a lean gas pipe 6; the lower end opening of the first channel is provided with a first adjusting plate 8, and the lower end opening of the second channel is provided with a second adjusting plate 9.
Further, a horizontal section I is arranged at the opening of the lower end of the first channel, and an adjusting plate I8 is arranged in the horizontal section I; the lower end opening of the second channel is provided with a second horizontal section, and the second adjusting plate 9 is arranged in the second horizontal section.
Further, the upper and lower parts of the shutter valve body 1 are respectively provided with a fixed slip ring at the outer side of the weight rod 12.
Furthermore, the big air door 4 and the small air door 5 are all of a turning plate structure, and the inner sides of the big air door 4 and the small air door 5 are respectively provided with an adjusting baffle.
Further, an air adjusting plate is arranged in the small air flue connecting pipe 7.
The working process of the exhaust gas shutter for the reheating coke oven is as follows:
1) When lean gas is adopted for heating and the ascending gas flow is adopted, the first roller disc 10 and the second roller disc 11 fall down, and the connection between the waste gas shutter and the main flue of the coke oven is cut off; the large air door 4 is opened, air enters the first channel through the large air door 4 and then enters the air regenerator through the small air flue connecting pipe 7; lean gas enters a channel II through a lean gas pipe 6 and enters a gas regenerator through a gas small flue connecting pipe 3; air and lean gas enter a combustion chamber for mixed combustion after heat exchange of corresponding regenerators;
2) When lean gas is adopted for heating and is the descending air flow, the burnt waste gas enters a corresponding first channel and a corresponding second channel through an air small flue connecting pipe 7 and a gas small flue connecting pipe 3 after heat exchange of a regenerator, and the descending air flow resistance is respectively regulated through a regulating plate I8 and a regulating plate II 9 arranged at the lower end opening of the first channel and the lower end opening of the second channel; the first weight disc 10 and the second weight disc 11 are synchronously lifted under the drive of the weight rod 12, and waste gas is introduced into a coke oven main flue after passing through the shutter valve body 1;
3) When coke oven gas is adopted for heating and is updraft, the large air door 4 and the small air door 5 are opened, air enters the first channel through the large air door 4, and air enters the second channel through the small air door 5; then respectively entering corresponding regenerators through an air small flue connecting pipe 7 and a gas small flue connecting pipe 3, and after heat exchange, mixing with coke oven gas introduced from the bottom of the coke oven in a combustion chamber for combustion;
4) When coke oven gas is adopted for heating and is used as descending air flow, the burnt waste gas enters a corresponding first channel and a corresponding second channel through an air small flue connecting pipe 7 and a gas small flue connecting pipe 3 after heat exchange of a regenerator, and descending air flow resistance is respectively regulated through a regulating plate I8 and a regulating plate II 9 arranged at an opening at the lower end of the first channel and an opening at the lower end of the second channel; the first weight disc 10 and the second weight disc 11 are synchronously lifted under the drive of the weight rod 12, and waste gas is introduced into a coke oven main flue after passing through the shutter valve body 1.
The waste gas shutter for the reheating type coke oven is characterized in that the waste gas shutter is suitable for the reheating type coke oven which can be heated by adopting lean gas or coke oven gas, the exchange operation of a heating system is realized through the cooperation of a large air door 4, a small air door 5 and a waste gas mound, the large air door 4, the small air door 5 and a lean gas pipe 6 are arranged on a conversion regulating channel 2, a regulating plate I8 and a regulating plate II 9 are respectively arranged in the channel I and the channel II, and waste gas resistance can be respectively regulated; for the multi-section heating reheating type coke oven, the air inlet quantity of each section can be respectively adjusted.
The large air door 4 and the small air door 5 can be provided with adjusting baffles to adjust the air inlet.
The exhaust gas inlet end of the conversion regulating channel 2 adopts a left-right side-by-side arrangement mode, the exhaust gas outlet end adopts a top-bottom arrangement mode, and the conversion of two internal air flows from side-by-side to top-bottom outflow is realized through the conversion regulating channel 2; the exhaust gas resistance in the first and second channels can be adjusted respectively. When lean gas is used for heating and is an updraft, the lean gas and air can be effectively isolated.
Two weight plates are arranged in the shutter valve body 2 one above the other, when the exhaust gas flow passage is opened, the weight plate I10 and the weight plate II 11 are lifted together with the weight rod 12, and when the exhaust gas flow passage is closed, the weight plate I10 and the weight plate II 11 fall together with the weight rod 12. The upper part and the lower part of the shutter valve body 1 are respectively provided with a fixed slip ring for sliding the weight rod 12, which plays a role in guiding and ensures the stability of the up-and-down movement of the weight rod 12.
The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present utility model, but the scope of the present utility model is not limited to the following examples.
[ example ]
In this embodiment, the exhaust gas shutter for the reheat coke oven includes a shutter valve body, an exhaust gas mound, a conversion adjusting passage, a gas small flue connecting pipe, an air small flue connecting pipe, and a lean gas pipe.
As shown in fig. 1 and 2, the switching adjusting channel consists of a channel one, a channel two, a large air door 4, a small air door 5, an adjusting plate one 8 and an adjusting plate two 9; the first channel and the second channel are arranged side by side in a left-right inclined way to form a body of the conversion and adjustment channel 2, an opening at the upper end of the first channel is communicated with an air small flue connecting pipe 7, and a large air door 4 is arranged at the top of the first channel; the upper end opening of the second channel is communicated with a small gas flue connecting pipe 3, and a small air door 5 is arranged at the top of the second channel; the lower end opening of the first channel is arranged below, and the lower end opening of the second channel is arranged above and communicated with the shutter valve body 1 respectively; the waste gas block consists of a first block disc 10, a second block disc 11 and a block rod 12, wherein the first block disc 10 is arranged at an opening at the lower end of a corresponding channel in the shutter valve body 1, the second block disc 11 is arranged at an opening at the lower end of the corresponding channel, and the first block disc 10 and the second block disc 11 are driven by the block rod 12 to synchronously move up and down; the bottom opening of the shutter valve body 1 is connected with a main flue of the coke oven; the bottom of the second channel is connected with a lean gas pipe 6; the lower end opening of the first channel is provided with a first adjusting plate 8, and the lower end opening of the second channel is provided with a second adjusting plate 9.
When lean gas is adopted for heating and is updraft, the large air door 4 is opened, air enters the first channel at the left side of the conversion regulating channel 2 from the large air door 4, and then enters the air regenerator through the small air flue connecting pipe 7; the air quantity can be effectively adjusted by the adjusting baffle arranged at the big air door 5 and the air adjusting plate arranged in the air small flue connecting pipe 7. At this time, the small air door 5 is closed, lean gas enters the second channel on the right side of the conversion regulating channel 2 from the lean gas pipe 6, and then enters the gas regenerator through the gas small flue connecting pipe 3. Air and coal gas are subjected to heat exchange through corresponding regenerators and then enter a combustion chamber for mixed combustion. At this time, the first weight disc 10 and the second weight disc 12 in the shutter valve body 1 fall down completely, so that air or coal gas is prevented from entering the main flue of the coke oven.
When lean gas is adopted for heating and descending air flow is adopted, a big air door 4 and a small air door 5 are closed, a first weight disc 10 and a second weight disc 11 in a shutter valve body 1 are opened, and after the heat exchange of the burnt waste gas is completed in a heat storage chamber, the burnt waste gas enters a main flue of the coke oven through a small flue connecting pipe (comprising an air small flue connecting pipe 7 and a gas small flue connecting pipe 3), a conversion adjusting channel 2 (comprising a channel I and a channel II) and the shutter valve body 1. The exhaust gas is two air flows before entering the shutter valve body 1, and the two air flows respectively flow through the corresponding channels and respectively adjust the exhaust gas resistance through the adjusting plates (comprising the first adjusting plate 8 and the second adjusting plate 9) in the corresponding channels.
When coke oven gas is used for heating and is updraft, the large air door 4 and the small air door 5 are opened, the air inlet quantity is regulated by the regulating baffle, air enters from the large air door 4 and the small air door 5 and then enters the coke oven regenerator through the corresponding small air flue connecting pipe 7 and the small gas flue connecting pipe 3, at the moment, the coke oven gas is fed from the bottom of the oven body, and the air subjected to heat exchange by the regenerator and the coke oven gas are mixed and combusted in the combustion chamber.
The conditions for heating coke oven gas and downdraft are the same as those for lean gas.
It should be understood that the directions or positional relationships indicated by "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. in this embodiment are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the utility model.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. The exhaust gas shutter for the reheating type coke oven is characterized by comprising a shutter valve body, an exhaust gas mound, a conversion adjusting channel, a gas small flue connecting pipe, an air small flue connecting pipe and a lean gas pipe; the conversion adjusting channel consists of a first channel, a second channel, a large air door, a small air door, a first adjusting plate and a second adjusting plate; the first channel and the second channel are arranged side by side in an inclined way to form a body of a conversion and adjustment channel, an opening at the upper end of the first channel is communicated with an air small flue connecting pipe, and a large air door is arranged at the top of the first channel; the opening at the upper end of the second channel is communicated with a small gas flue connecting pipe, and a small air door is arranged at the top of the second channel; the lower end opening of the first channel and the lower end opening of the second channel are communicated with the shutter valve body; the waste gas block consists of a first block disc, a second block disc and a block rod, wherein the first block disc is arranged at an opening at the lower end of a corresponding channel in the shutter valve body, the second block disc is arranged at an opening at the lower end of the corresponding channel, and the first block disc and the second block disc are driven by the block rod to synchronously move up and down; the bottom opening of the shutter valve body is connected with the main flue of the coke oven; the bottom of the second channel is connected with a lean gas pipe; an adjusting plate I is arranged at the opening of the lower end of the first channel, and an adjusting plate II is arranged at the opening of the lower end of the second channel.
2. The exhaust gas shutter for the reheating type coke oven according to claim 1, wherein a horizontal section I is arranged at the opening of the lower end of the channel I, and the adjusting plate I is arranged in the horizontal section I; the lower end opening of the second channel is provided with a second horizontal section, and the second adjusting plate is arranged in the second horizontal section.
3. The exhaust gas shutter for a reheating coke oven according to claim 1, wherein the upper and lower parts of the shutter valve body are respectively provided with a fixed slip ring at the outer side of the mound bar.
4. The exhaust gas shutter for a reheating coke oven according to claim 1, wherein the large air door and the small air door are both of a flap structure, and the inner sides of the large air door and the small air door are respectively provided with an adjusting baffle.
5. The exhaust shutter for a reheat coke oven as claimed in claim 1, wherein an air regulating plate is provided in the air small flue connection pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322099197.6U CN220393609U (en) | 2023-08-07 | 2023-08-07 | Waste gas shutter for reheating coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322099197.6U CN220393609U (en) | 2023-08-07 | 2023-08-07 | Waste gas shutter for reheating coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220393609U true CN220393609U (en) | 2024-01-26 |
Family
ID=89599309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322099197.6U Active CN220393609U (en) | 2023-08-07 | 2023-08-07 | Waste gas shutter for reheating coke oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220393609U (en) |
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2023
- 2023-08-07 CN CN202322099197.6U patent/CN220393609U/en active Active
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