CN219922497U - Tail gas treatment system for asphalt production line - Google Patents
Tail gas treatment system for asphalt production line Download PDFInfo
- Publication number
- CN219922497U CN219922497U CN202321211847.5U CN202321211847U CN219922497U CN 219922497 U CN219922497 U CN 219922497U CN 202321211847 U CN202321211847 U CN 202321211847U CN 219922497 U CN219922497 U CN 219922497U
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- China
- Prior art keywords
- asphalt
- tail gas
- buffer tank
- oil
- outlet
- 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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- 239000010426 asphalt Substances 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 70
- 238000011084 recovery Methods 0.000 claims abstract description 25
- 239000002918 waste heat Substances 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 56
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 239000010724 circulating oil Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Road Paving Machines (AREA)
Abstract
The utility model discloses an asphalt production line tail gas treatment system, which comprises a condenser, a fan, a buffer tank, a burner and a waste heat recovery boiler, wherein the fan is arranged at the bottom of the buffer tank; the condenser is positioned at the front end of the fan, and the rear end of the fan is connected with the air inlet of the buffer tank through an air pipeline; the condenser is used for cooling the asphalt tail gas, and the fan is used for pumping the asphalt tail gas into the buffer tank after the asphalt tail gas is treated by the condenser; the gas outlet of the buffer tank is connected with the gas inlet of the burner through a gas pipeline, and the burner is used for burning asphalt tail gas, and the gas generated after burning is discharged after reaching the standard; the waste heat recovery boiler is arranged above the burner, heat conduction oil is arranged in the waste heat recovery boiler and used for absorbing heat generated by burning in the burner, and the heat conduction oil can supply heat for heat utilization equipment through an oil pipeline.
Description
Technical Field
The utility model belongs to the technical field of asphalt tail gas treatment application, and particularly relates to a tail gas treatment system of an asphalt production line.
Background
Before the asphalt tail gas is combusted, distillate oil and a large amount of water in the waste gas are usually removed, and the rest of oxygen, inert gas, low-molecular hydrocarbon compounds, cancerogenic substances such as benzopyrene and the like, malodorous substances such as oxygen, sulfur and the like are sent to an incinerator for treatment. The necessity of treating the asphalt tail gas is a common knowledge, but the high-efficiency utilization of the heat energy generated by the incineration of the asphalt tail gas is often neglected, so that the energy waste is caused.
Disclosure of Invention
In order to solve the problems in the background art, the utility model adopts the following technical scheme: an asphalt production line tail gas treatment system comprises a condenser, a fan, a buffer tank, a combustor and a waste heat recovery boiler;
the condenser is positioned at the front end of the fan, and the rear end of the fan is connected with the air inlet of the buffer tank through an air pipeline;
the condenser is used for cooling the asphalt tail gas, and the fan is used for pumping the asphalt tail gas into the buffer tank after the asphalt tail gas is treated by the condenser;
the gas outlet of the buffer tank is connected with the gas inlet of the burner through a gas pipeline, and the burner is used for burning asphalt tail gas, and the gas generated after burning is discharged after reaching the standard;
the waste heat recovery boiler is arranged above the burner, heat conduction oil is arranged in the waste heat recovery boiler and used for absorbing heat generated by burning in the burner, and the heat conduction oil can supply heat for heat utilization equipment through an oil pipeline.
In some embodiments, the top of the buffer tank is also provided with a secondary air outlet, a pressure limiting valve is arranged at the secondary air outlet, and the secondary air outlet is connected with the activated carbon box through an air pipeline;
the pressure limiting valve is used for enabling partial gas to pass through the pressure limiting valve and be discharged after being treated by the active carbon box when the air pressure in the buffer tank exceeds the pressure limit.
In some embodiments, a drain outlet is further formed in the bottom of the buffer tank, and a drain valve is arranged at the drain outlet and is used for discharging dirt generated by condensation and sedimentation of asphalt tail gas.
In some embodiments, an air valve is arranged at the air inlet outlet of the buffer tank, a pressure stabilizing valve is arranged at the air outlet of the buffer tank, and a fire stopping valve is also arranged at the air inlet of the combustor.
In some embodiments, the heat utilization apparatus includes an asphalt heat exchanger disposed adjacent to the heat recovery boiler;
the waste heat recovery boiler and the asphalt heat exchanger are connected to a bypass of an oil pipeline of a main boiler of the factory building, and at least one circulating oil pump and a plurality of oil valves are arranged in the oil pipeline.
In some embodiments, the asphalt heat exchanger is provided with an asphalt inlet and an asphalt outlet, and asphalt butterfly valves are arranged at the asphalt inlet and the asphalt outlet;
the shell of the asphalt heat exchanger is provided with a heat conducting oil channel, an oil inlet of the heat conducting oil channel is connected with an oil outlet in the waste heat recovery boiler, and an oil outlet of the heat conducting oil channel is connected with a main road of a main boiler oil pipeline of a factory building.
Compared with the prior art, the utility model has the beneficial effects that:
according to the asphalt production line tail gas treatment system, asphalt tail gas is subjected to multi-layer treatment, heat energy generated by incineration of the asphalt tail gas is fully utilized, energy conservation and environmental protection are realized, and the cost is low.
Drawings
FIG. 1 is a schematic diagram of an asphalt production line tail gas treatment system provided by the utility model.
Reference numerals illustrate:
1. a condenser; 2. a blower; 3. a buffer tank; 4. a burner; 5. a waste heat recovery boiler; 6. a pressure limiting valve; 7. an activated carbon box; 8. a blow-down valve; 9. an air valve; 10. a pressure stabilizing valve; 11. a fire stop valve; 12. a main boiler; 13. a circulating oil pump; 14. an oil valve; 15. using a heating device; 16. an asphalt heat exchanger; 17. asphalt butterfly valve.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present utility model easy to understand, the following further describes how the present utility model is implemented with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, the utility model provides an asphalt production line tail gas treatment system, which comprises a condenser 1, a fan 2, a buffer tank 3, a combustor 4 and a waste heat recovery boiler 5; the condenser 1 is positioned at the front end of the fan 2, and the rear end of the fan 2 is connected with the air inlet of the buffer tank 3 through an air pipeline; the condenser 1 is used for cooling the asphalt tail gas, the fan 2 is used for pumping the asphalt tail gas into the buffer tank 3 after the asphalt tail gas is treated by the condenser 1; the gas outlet of the buffer tank 3 is connected with the gas inlet of the burner 4 through a gas pipeline, the burner 4 is used for burning asphalt tail gas, and the gas generated after burning is discharged after reaching the standard; the waste heat recovery boiler 5 is installed above the burner 4, heat conduction oil is installed in the waste heat recovery boiler 5 and used for absorbing heat generated by burning in the burner 4, and the heat conduction oil can supply heat for the heat utilization equipment 15 through an oil pipeline.
Preferably, the top of the buffer tank 3 is also provided with a secondary air outlet, the secondary air outlet is provided with a pressure limiting valve 6, and the secondary air outlet is connected with the activated carbon box 7 through an air pipeline; the pressure limiting valve 6 is used for discharging part of the gas after the pressure limiting valve 6 is used for processing the gas through the activated carbon box 7 when the gas pressure in the buffer tank 3 exceeds the pressure limit.
Preferably, the bottom of the buffer tank 3 is also provided with a drain outlet, and a drain valve 8 is arranged at the drain outlet and is used for discharging dirt generated by condensation and sedimentation of asphalt tail gas.
Preferably, an air valve 9 is arranged at the air inlet of the buffer tank 3, a pressure stabilizing valve 10 is arranged at the air outlet of the buffer tank 3, and a fire stopping valve 11 is also arranged at the air inlet of the combustor 4.
Preferably, the heat utilization device 15 comprises an asphalt heat exchanger 16, the asphalt heat exchanger 16 being arranged in the vicinity of the waste heat recovery boiler 5; the waste heat recovery boiler 5 and the asphalt heat exchanger 16 are both connected to a bypass of an oil pipeline of the main boiler 12 of the factory building, and at least one circulating oil pump 13 and a plurality of oil valves 14 are arranged in the oil pipeline.
Preferably, the asphalt heat exchanger 16 is provided with an asphalt inlet and an asphalt outlet, and asphalt butterfly valves 17 are arranged at the asphalt inlet and the asphalt outlet; the shell of the asphalt heat exchanger 16 is provided with a heat conducting oil channel, an oil inlet of the heat conducting oil channel is connected with an oil outlet in the waste heat recovery boiler 5, and the oil outlet of the heat conducting oil channel is connected with a main road of an oil pipeline of the main boiler 12 of the factory building.
The tail gas treatment system equipment for the asphalt production line has low investment and running cost, and can fully utilize heat energy generated by the system. The system is used as a bypass system of a pipeline of the asphalt production main boiler 12, heat generated by combustion of asphalt flue gas is utilized for heating heat conduction oil, and heat energy is utilized to the maximum extent; even if the asphalt flue gas burns, the heat conduction oil pipeline is corroded, the bypass is only influenced, and no influence is caused on the main boiler. The bypass heat conduction oil pipeline can be replaced integrally and quickly; the system can be used as an auxiliary boiler and a standby boiler, is a supplement to the main boiler 12, and can save more energy and protect environment because the main boiler 12 is not started by a small amount of heat requirements such as pipeline heat preservation; the system can adopt conventional heating modes such as fuel gas, oil, electricity and the like; the temperature of the heat conduction oil can be locally increased, and a special small amount of high-temperature heat energy is provided for the parts of the asphalt heat exchanger 16, rubber asphalt production and the like which need the high-temperature heat conduction oil.
In a specific embodiment, the utility model provides an asphalt production line tail gas treatment system device, which is characterized in that when in operation:
firstly, asphalt flue gas enters a condenser 1, the temperature of the asphalt flue gas is reduced in the condenser 1, and part of the asphalt flue gas is condensed into liquid oil which is recycled; the uncondensed part is sent by the fan 2 to the buffer tank 3 through the damper 9. Stabilizing the pressure in the buffer tank 3, and allowing a very small amount of asphalt tail gas exceeding the pressure limit to enter an activated carbon box 7 through a pressure limiting valve 6 for adsorption and then reach the standard for emission; in addition, a small amount of asphalt tail gas is condensed and settled at the bottom of the tail gas buffer tank 3 for a long time, and is discharged from the blow-down valve 8 to be recycled; most asphalt tail gas enters the tail gas burner 4 through the pressure stabilizing valve 10 and the fire stopping valve 11, and is burnt at high temperature to reach the standard for emission. The heat energy generated by incineration is collected by the waste heat recovery boiler 5, is conducted to heat carrier conduction oil and enters the asphalt heat exchanger 16 through the oil valve 14. The waste heat recovery boiler 5 pipeline is used as a bypass of the main boiler 12 pipeline, is close to the asphalt heat exchanger 16, has short pipeline and small heat loss along the way, is easier to retain the heat energy of the heat conduction oil, and the high-temperature heat conduction oil can also meet the requirements of the asphalt heat exchanger 16. When low temperature asphalt enters the asphalt heat exchanger 16 from the asphalt butterfly valve 17 and flows out from the other asphalt butterfly valve 17, it becomes high temperature asphalt, and is sent to a required place by a pipeline. When high-temperature asphalt is not needed, the oil valve 14 corresponding to the asphalt heat exchanger 16 is closed, the oil valve 14 connected to the pipeline of the main boiler 12 is opened, and the heat conduction oil pipeline of the waste heat recovery boiler 5 is connected to the heat conduction oil pipeline of the main boiler 12 to supply heat to the heat utilization equipment 15 of the whole system.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (6)
1. The tail gas treatment system of the asphalt production line is characterized by comprising a condenser (1), a fan (2), a buffer tank (3), a combustor (4) and a waste heat recovery boiler (5);
the condenser (1) is positioned at the front end of the fan (2), and the rear end of the fan (2) is connected with the air inlet of the buffer tank (3) through an air pipeline;
the condenser (1) is used for cooling asphalt tail gas, and the fan (2) is used for pumping the asphalt tail gas into the buffer tank (3) after the asphalt tail gas is processed by the condenser (1);
the gas outlet of the buffer tank (3) is connected with the gas inlet of the burner (4) through a gas pipeline, the burner (4) is used for burning asphalt tail gas, and the gas generated after burning is discharged after reaching standards;
the waste heat recovery boiler (5) is arranged above the burner (4), heat conduction oil is arranged in the waste heat recovery boiler (5) and used for absorbing heat generated by burning in the burner (4), and the heat conduction oil can supply heat for the heat utilization equipment (15) through an oil pipeline.
2. The tail gas treatment system of the asphalt production line according to claim 1, wherein a secondary gas outlet is further formed in the top of the buffer tank (3), a pressure limiting valve (6) is arranged at the secondary gas outlet, and the secondary gas outlet is connected with an activated carbon box (7) through a gas pipeline;
the pressure limiting valve (6) is used for enabling partial gas to pass through the pressure limiting valve (6) and be discharged after being treated by the active carbon box (7) when the air pressure in the buffer tank (3) exceeds the pressure limit.
3. The tail gas treatment system of the asphalt production line according to claim 1, wherein a drain outlet is further formed in the bottom of the buffer tank (3), and a drain valve (8) is arranged at the drain outlet and is used for discharging dirt generated by condensation and sedimentation of asphalt tail gas.
4. The asphalt production line tail gas treatment system according to claim 1, wherein an air inlet of the buffer tank (3) is provided with an air valve (9), an air outlet of the buffer tank (3) is provided with a pressure stabilizing valve (10), and an air inlet of the combustor (4) is further provided with a fire stopping valve (11).
5. The asphalt production line tail gas treatment system according to claim 1, wherein said heat utilization apparatus (15) comprises an asphalt heat exchanger (16), said asphalt heat exchanger (16) being disposed in proximity to a waste heat recovery boiler (5);
the waste heat recovery boiler (5) and the asphalt heat exchanger (16) are connected to a bypass of an oil pipeline of the main boiler (12) of the factory building, and at least one circulating oil pump (13) and a plurality of oil valves (14) are arranged in the oil pipeline.
6. The tail gas treatment system of the asphalt production line according to claim 5, wherein an asphalt inlet and an asphalt outlet are formed in the asphalt heat exchanger (16), and asphalt butterfly valves (17) are arranged at the asphalt inlet and the asphalt outlet;
a heat conducting oil channel is arranged on the shell of the asphalt heat exchanger (16), an oil inlet of the heat conducting oil channel is connected with an oil outlet in the waste heat recovery boiler (5), and an oil outlet of the heat conducting oil channel is connected with a main road of an oil pipeline of a main boiler (12) of the factory building.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321211847.5U CN219922497U (en) | 2023-05-18 | 2023-05-18 | Tail gas treatment system for asphalt production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321211847.5U CN219922497U (en) | 2023-05-18 | 2023-05-18 | Tail gas treatment system for asphalt production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219922497U true CN219922497U (en) | 2023-10-31 |
Family
ID=88493148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321211847.5U Active CN219922497U (en) | 2023-05-18 | 2023-05-18 | Tail gas treatment system for asphalt production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219922497U (en) |
-
2023
- 2023-05-18 CN CN202321211847.5U patent/CN219922497U/en active Active
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