CN219867911U - Flue gas waste heat recovery system of RTO (regenerative thermal oxidizer) furnace of coking plant - Google Patents
Flue gas waste heat recovery system of RTO (regenerative thermal oxidizer) furnace of coking plant Download PDFInfo
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- CN219867911U CN219867911U CN202321139853.4U CN202321139853U CN219867911U CN 219867911 U CN219867911 U CN 219867911U CN 202321139853 U CN202321139853 U CN 202321139853U CN 219867911 U CN219867911 U CN 219867911U
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- rto
- pipeline
- recovery system
- flue gas
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000003546 flue gas Substances 0.000 title claims abstract description 23
- 238000011084 recovery Methods 0.000 title claims abstract description 22
- 239000002918 waste heat Substances 0.000 title claims abstract description 22
- 238000004939 coking Methods 0.000 title abstract description 13
- 230000001172 regenerating effect Effects 0.000 title description 6
- 239000007800 oxidant agent Substances 0.000 title description 3
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 238000000746 purification Methods 0.000 claims abstract description 9
- 239000003034 coal gas Substances 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 32
- 239000000571 coke Substances 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 15
- 239000002699 waste material Substances 0.000 claims description 8
- 238000010926 purge Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000010908 plant waste Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
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Abstract
The utility model relates to a flue gas waste heat recovery system of an RTO (room temperature oxygen) furnace of a coking plant, which comprises a rotary RTO furnace, wherein the right side of the rotary RTO furnace is communicated with a chimney through a heat bypass pipeline, the lower part of the heat bypass pipeline is communicated with a heat exchanger, the left side of the heat exchanger is communicated with a liquid outlet pipeline, the liquid outlet pipeline is communicated with a coal gas purification user point through an external circulating pump, the right side of the heat exchanger is communicated with a liquid inlet pipeline, the liquid inlet pipeline is communicated with a coal gas purification user through an internal circulating pump, the liquid inlet pipeline is pumped into the heat exchanger again through the internal circulating pump for heating treatment, and the heat of the combustion flue gas of the RTO furnace is recovered and reused through waste heat recovery.
Description
Technical Field
The utility model belongs to the technical field of flue gas emission of an RTO incinerator, and particularly relates to a flue gas waste heat recovery system of an RTO incinerator of a coking plant.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Along with the continuous popularization and application of the Regenerative Thermal Oxidation (RTO) technology in the tail gas treatment of a coking plant, more and more regenerative thermal oxidation incinerators are put into the tail gas treatment process of the coking plant, and organic waste gas generated in the production process of the coking industry is heated to 800 ℃ through the regenerative RTO furnace, so that VOCs in the waste gas are oxidized and decomposed into harmless CO2 and H2O, and then the harmless CO2 and H2O are discharged to the atmosphere through a chimney.
The inventor knows that if the high Wen Mohai gas of the waste gas after the purification and combustion of the regenerator directly enters a chimney to be discharged into the atmosphere, not only the heat loss is caused, but also a certain harm is brought to the environment.
In the process flow of gas purification in the coking industry, the heat of the combustion flue gas of the RTO furnace can be recycled through waste heat recovery of the waste gas, and the part of energy is applied to the method of gas purification heat tracing pipes in the coking industry, so that the production cost is reduced, and the aims of energy conservation and emission reduction are fulfilled.
Disclosure of Invention
The utility model aims to provide a flue gas waste heat recovery system of an RTO (regenerative thermal oxidizer) furnace of a coking plant, which can at least solve one of the technical problems.
In order to achieve the above purpose, the utility model provides a flue gas waste heat recovery system of an RTO (room temperature oxygen) furnace of a coking plant, which comprises a rotary RTO furnace, wherein the right side of the rotary RTO furnace is communicated with a chimney through a heat bypass pipeline, the lower part of the heat bypass pipeline is communicated with a heat exchanger, a tail gas discharge pipeline is arranged below the heat exchanger, the rotary RTO furnace is communicated with the chimney through the tail gas discharge pipeline, the left side of the heat exchanger is communicated with a liquid outlet pipeline, the liquid outlet pipeline is communicated with a coal gas purifying user point through an outer circulating pump, the right side of the heat exchanger is communicated with a liquid inlet pipeline, the liquid inlet pipeline is communicated with the coal gas purifying user point through an inner circulating pump, and the liquid inlet pipeline is pumped into the heat exchanger again through the inner circulating pump to perform heating treatment;
the liquid outlet pipeline comprises a hot water storage tank arranged on the liquid outlet pipeline, and a remote thermometer is communicated above the hot water storage tank.
The left side of the hot water storage tank is communicated with a user point inlet pipeline through an external circulating pump.
The liquid outlet pipeline is provided with a first temperature display controller and a first temperature regulating valve, and the liquid inlet pipeline is provided with a second temperature display controller and a second temperature regulating valve.
The first temperature display controller and the first temperature regulating valve arranged on the liquid outlet pipeline are communicated with the second temperature display controller and the second temperature regulating valve arranged on the liquid inlet pipeline through a remote thermometer.
The left side of the rotary RTO furnace is communicated with a coke oven gas inlet.
The coke oven gas inlet is communicated with the combustion-supporting fan, and a main fan communicated with the rotary RTO furnace is arranged below the coke oven gas inlet.
A blowing fan communicated with the rotary RTO furnace is arranged below the main fan, and the waste discharge fan is communicated with a tail gas discharge point.
The main fan is communicated with the signal interlocking electric valve which is interlocked with the remote thermometer.
The signal interlocking electric valve is communicated with the waste discharge fan to transmit and interlock temperature signals.
The beneficial effects of one or more of the technical schemes are as follows:
by adopting the waste heat recovery method, waste of heat energy of flue gas can be effectively reduced, the heat energy recovered by waste heat is used as a heat tracing pipeline, medium in the pipe can be recycled, steam consumption can be reduced, resource recovery and reutilization are effectively carried out, waste heat recovery is carried out on heat of flue gas combusted by an RTO furnace, and temperature rising treatment is carried out on the recovered heat, so that the use requirement of rich oil heating is met, the medium in the pipe is recycled through a circulating pump, and a green low-carbon development road is emphasized;
the temperature in the hot water storage tank is controlled through the regulating valve, so that the temperature of the pipeline requiring heat tracing for gas purification is controlled, and the temperature required by a user is ensured to reach the standard.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a schematic diagram of a flue gas waste heat recovery system of an RTO furnace in a coking plant.
In the figure, 1, a flue gas pipeline; 2. a heat exchanger; 3. a liquid outlet pipe; 4. a liquid inlet pipe; 5. a first temperature display controller; 6. a first temperature regulating valve; 7. a remote thermometer; 8. a second temperature display controller; 9. a second temperature regulating valve; 10. an external circulation pump; 11. an internal circulation pump; 12. a user point pipeline; 13. outputting a user point pipeline; 14. a hot water storage tank; 15. a heat bypass pipe; 16. a rotary RTO furnace; 17. purging the fan; 18. a main fan; 19. a combustion fan; 20. a coke oven gas inlet; 21. signal interlocking electric valve; 22. waste discharge fans; 23. a tail gas emission point; 24. the gas purifying user point, 25, chimney, 26 and tail gas exhaust pipeline.
Detailed Description
The following describes a specific implementation of the present embodiment with reference to the drawings.
Referring to fig. 1, an embodiment of the utility model provides a flue gas waste heat recovery system of an RTO furnace in a coking plant, which comprises a rotary RTO furnace 16, wherein the right side of the rotary RTO furnace 16 is communicated with a chimney 25 through a heat bypass pipeline 15, the lower part of the heat bypass pipeline 15 is communicated with a heat exchanger 2, a tail gas exhaust pipeline 26 is arranged below the heat exchanger 2, the rotary RTO furnace 16 is communicated with the chimney 25 through the tail gas exhaust pipeline 26, the left side of the heat exchanger 2 is communicated with a liquid outlet pipeline 3, the liquid outlet pipeline 3 is communicated with a gas purifying user point 24 through an outer circulating pump 10, the right side of the heat exchanger 2 is communicated with a liquid inlet pipeline 4, the liquid inlet pipeline 4 is communicated with the gas purifying user point 24 through an inner circulating pump 11, and the liquid inlet pipeline 4 is again led into the heat exchanger 2 through the inner circulating pump 11 for heating treatment;
the liquid outlet pipeline 3 comprises a hot water storage tank 14 arranged on the liquid outlet pipeline 3, and a remote thermometer 7 is communicated above the hot water storage tank 14.
The left side of the hot water storage tank 14 is communicated with the user-entering point pipeline 12 through the external circulating pump 10.
The liquid outlet pipe 3 is provided with a first temperature display controller 5 and a first temperature regulating valve 6, and the liquid inlet pipe 4 is provided with a second temperature display controller 8 and a second temperature regulating valve 9.
The first temperature display controller 5 and the first temperature regulating valve 6 which are arranged on the liquid outlet pipeline 3 are communicated with the second temperature display controller 8 and the second temperature regulating valve 9 which are arranged on the liquid inlet pipeline 4 through the remote thermometer 7.
The left side of the rotary RTO furnace 16 communicates with a coke oven gas inlet 20.
The coke oven gas inlet 20 is communicated with the combustion fan 19, and a main fan 18 communicated with the rotary RTO furnace 16 is arranged below the coke oven gas inlet 20.
A blowing fan 17 communicated with the rotary RTO furnace 16 is arranged below the main fan 18, and a waste air discharge fan 22 is communicated with a tail gas discharge point 23.
The main fan 18 is communicated with the signal interlocking electric valve 21, and the signal interlocking electric valve 21 is interlocked with the remote thermometer 7.
The signal interlocking electric valve 21 is communicated with the waste air discharge fan 22 to transmit and interlock temperature signals.
Working principle: the temperature of the water in the hot water storage tank 14 is maintained within a set temperature range in real time by a temperature display and controller and a temperature regulating valve.
The liquid in the hot water storage tank 14 is conveyed to pipelines which need heat tracing for gas purification through the external circulating pump 10, cooled condensate can also be recovered to the hot water storage tank 14, and the condensate is pumped into the heat exchanger 2 again through the internal circulating pump 11 for heating treatment, so that the cyclic utilization of water resources in the pipeline is realized.
The high-temperature flue gas from the RTO furnace heat bypass pipeline is discharged after passing through the heat exchanger 2, the liquid conveyed by the internal circulation pump 11 passes through the liquid inlet pipeline 4, the liquid heated after heat exchange passes through the liquid outlet pipeline 3, flows through the first temperature display controller 5 and the first temperature regulating valve 6, and then enters the hot water storage tank 14, and the heat energy of the part is stored.
While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.
Claims (9)
1. The utility model provides a coke-oven plant RTO stove flue gas waste heat recovery system, includes rotary RTO stove, its characterized in that, rotary RTO stove right side is through heat bypass pipeline intercommunication chimney, heat bypass pipeline below intercommunication heat exchanger is located the heat exchanger below sets up the tail gas exhaust pipe, rotary RTO stove is through tail gas exhaust pipe intercommunication chimney, heat exchanger left side intercommunication drain pipe, the drain pipe passes through outer circulating pump intercommunication coal gas purification user point, heat exchanger right side intercommunication feed liquor pipeline, the feed liquor pipeline passes through inner circulating pump intercommunication coal gas purification user, beats the heat exchanger again through the inner circulating pump and carries out the intensification treatment.
2. The coke oven plant RTO furnace flue gas waste heat recovery system of claim 1, wherein the liquid outlet pipeline comprises a hot water storage tank arranged on the liquid outlet pipeline, and a remote thermometer is communicated above the hot water storage tank.
3. The coke oven plant RTO furnace flue gas waste heat recovery system of claim 2, wherein the left side of the hot water storage tank is communicated with a user point inlet pipeline through an external circulation pump.
4. The coke oven plant RTO furnace flue gas waste heat recovery system of claim 1, wherein the liquid outlet pipeline is provided with a first temperature display controller and a first temperature regulating valve, and the liquid inlet pipeline is provided with a second temperature display controller and a second temperature regulating valve.
5. The coke oven plant RTO furnace flue gas waste heat recovery system according to claim 4 or 2, wherein the first temperature display controller and the first temperature regulating valve of the liquid outlet pipeline are communicated with the second temperature display controller and the second temperature regulating valve of the liquid inlet pipeline through a remote thermometer.
6. The coke oven plant RTO furnace flue gas waste heat recovery system of claim 1, wherein the rotary RTO furnace left side communicates with a coke oven gas inlet.
7. The coke oven plant RTO furnace flue gas waste heat recovery system of claim 6, wherein the coke oven gas inlet is communicated with a combustion fan, a main fan communicated with the rotary RTO furnace is arranged below the coke oven gas inlet, the main fan is communicated with a signal linkage electric valve, and the signal linkage electric valve is communicated with a waste discharge fan.
8. The coke plant RTO furnace flue gas waste heat recovery system of claim 7, wherein a purge fan communicated with the rotary RTO furnace is arranged below the main fan, and the waste discharge fan is communicated with a tail gas discharge point.
9. The coke oven plant RTO furnace waste heat recovery system of claim 8, wherein the signal-interlocked electrically operated valve is interlocked with a remote thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321139853.4U CN219867911U (en) | 2023-05-10 | 2023-05-10 | Flue gas waste heat recovery system of RTO (regenerative thermal oxidizer) furnace of coking plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321139853.4U CN219867911U (en) | 2023-05-10 | 2023-05-10 | Flue gas waste heat recovery system of RTO (regenerative thermal oxidizer) furnace of coking plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219867911U true CN219867911U (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321139853.4U Active CN219867911U (en) | 2023-05-10 | 2023-05-10 | Flue gas waste heat recovery system of RTO (regenerative thermal oxidizer) furnace of coking plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219867911U (en) |
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2023
- 2023-05-10 CN CN202321139853.4U patent/CN219867911U/en active Active
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