CN215112663U - Energy-saving and emission-reducing system of asphalt mixing plant - Google Patents
Energy-saving and emission-reducing system of asphalt mixing plant Download PDFInfo
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- CN215112663U CN215112663U CN202121713612.7U CN202121713612U CN215112663U CN 215112663 U CN215112663 U CN 215112663U CN 202121713612 U CN202121713612 U CN 202121713612U CN 215112663 U CN215112663 U CN 215112663U
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Abstract
The utility model discloses an asphalt mixing plant energy saving and emission reduction system is equipped with high temperature gas passageway and low temperature gas passageway in the heat exchanger, cold wind air-blower pass through the pipeline with low temperature entry intercommunication, air intlet pass through the pipeline with low temperature export intercommunication, tail gas export pass through the pipeline with high temperature entry intercommunication, through the pipeline with high temperature export intercommunication. Through the pitch mixing plant energy saving and emission reduction system of above-mentioned optimal design, structural design is reasonable, through adding the heat exchanger, the high temperature tail gas in the drying roller carries out the heat exchange with the air before getting into the combustor, on the one hand, has improved high temperature waste heat utilization ratio, improves the temperature when air gets into the combustor, and the fuel in the help combustor fully burns, and on the other hand, high temperature tail gas is through removing dust, the heat exchange back, because its temperature reduces for harmful substance content greatly reduced who contains in the tail gas, thereby reduce harmful gas's discharge.
Description
Technical Field
The utility model relates to an asphalt mixing technical field especially relates to an energy saving and emission reduction system of asphalt mixing plant.
Background
The asphalt is a waterproof, moistureproof and anticorrosive organic cementing material, and is a black brown complex mixture composed of hydrocarbons with different molecular weights and non-metallic derivatives thereof. When the asphalt is used industrially, an industrial burner is required to be arranged to heat the asphalt and further stir and mix the asphalt.
The asphalt mixing plant can produce certain tail gas pollution in the working process, the tail gas is directly discharged into the atmosphere, the tail gas has certain temperature, the temperature of a chimney outlet is about 70 ℃, the temperature of an induced draft fan is about 100 ℃, the temperature is usually directly discharged into the atmosphere to cause heat loss, and harmful gases such as benzopyrene, anthracene, naphthalene and the like are discharged along with the tail gas. In order to solve the problems, some asphalt mixing plants directly send tail gas into a combustor for secondary combustion, however, on one hand, the sending of the tail gas dilutes combustion-supporting gas in the combustor to influence combustion efficiency, and on the other hand, corrosive gas in the tail gas is brought into a combustion cavity of the combustor to corrode the combustion cavity to influence the service life of the combustion cavity.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem who exists among the background art, the utility model provides an energy saving and emission reduction system of asphalt mixing plant.
The utility model provides a pair of asphalt mixing plant energy saving and emission reduction system, include: the device comprises a burner, a drying roller, a heat exchanger, a cold air blower and a discharge chimney;
a combustion port and a tail gas outlet are arranged on the drying roller, a burner is arranged at the combustion port, and an air inlet is arranged on the burner;
the heat exchanger is provided with a high-temperature inlet, a high-temperature outlet, a low-temperature inlet and a low-temperature outlet, a high-temperature gas channel is formed between the high-temperature inlet and the high-temperature outlet, and a low-temperature gas channel is formed between the low-temperature inlet and the low-temperature outlet;
the cold air blower is communicated with the low-temperature inlet through a pipeline, the air inlet is communicated with the low-temperature outlet through a pipeline, and the tail gas outlet is communicated with the high-temperature inlet through a pipeline and communicated with the high-temperature outlet through a pipeline.
Preferably, still include the tail gas draught fan, the tail gas draught fan sets up on the pipeline between emission chimney and high temperature export.
Preferably, a dust removal device is arranged on a pipeline between the tail gas outlet and the heat exchanger.
Preferably, the dust removing device adopts a bag-type dust remover.
Preferably, an air supplementing valve is arranged on a pipeline between the air inlet and the low-temperature outlet.
Preferably, the heat exchanger is one or more of a cast iron type heat exchanger, a plate type heat exchanger, a barrel type heat exchanger and a steel type heat exchanger.
The utility model discloses in, the pitch mixing plant energy saving and emission reduction system that provides is equipped with high temperature gas passageway and low temperature gas passageway in the heat exchanger, the cold wind air-blower pass through the pipeline with low temperature entry intercommunication, air intlet pass through the pipeline with low temperature export intercommunication, tail gas outlet pass through the pipeline with high temperature entry intercommunication, through the pipeline with high temperature export intercommunication. Through the pitch mixing plant energy saving and emission reduction system of above-mentioned optimal design, structural design is reasonable, through adding the heat exchanger, the high temperature tail gas in the drying roller carries out the heat exchange with the air before getting into the combustor, on the one hand, has improved high temperature waste heat utilization ratio, improves the temperature when air gets into the combustor, and the fuel in the help combustor fully burns, and on the other hand, high temperature tail gas is through removing dust, the heat exchange back, because its temperature reduces for harmful substance content greatly reduced who contains in the tail gas, thereby reduce harmful gas's discharge.
Drawings
Fig. 1 is the utility model provides a bituminous mixing plant energy saving and emission reduction system's schematic structure diagram.
Fig. 2 is the utility model provides a local structure schematic diagram of asphalt mixing plant energy saving and emission reduction system.
Detailed Description
As shown in fig. 1 and 2, fig. 1 is the utility model provides a structural schematic diagram of asphalt mixing plant energy saving and emission reduction system, fig. 2 is the utility model provides a local structural schematic diagram of asphalt mixing plant energy saving and emission reduction system.
Referring to fig. 1 and 2, the utility model provides an energy saving and emission reduction system of asphalt mixing plant, include: the device comprises a burner 1, a drying roller 2, a heat exchanger 3, a cold air blower 4 and a discharge chimney 5;
a combustion port and a tail gas outlet are arranged on the drying roller 2, the combustor 1 is arranged at the combustion port, and an air inlet is arranged on the combustor 1;
the heat exchanger 3 is provided with a high-temperature inlet, a high-temperature outlet, a low-temperature inlet and a low-temperature outlet, a high-temperature gas channel is formed between the high-temperature inlet and the high-temperature outlet, and a low-temperature gas channel is formed between the low-temperature inlet and the low-temperature outlet;
the cold air blower 4 is communicated with the low-temperature inlet through a pipeline, the air inlet is communicated with the low-temperature outlet through a pipeline, and the tail gas outlet is communicated with the high-temperature inlet through a pipeline and communicated with the high-temperature outlet through a pipeline.
In the concrete working process of asphalt mixing plant energy saving and emission reduction system of this embodiment, the air gets into the interior and combustion medium reaction of combustor, the flame that the burning produced gets into drying drum, pitch to in the cylinder heats, pitch produces high temperature tail gas in the heating process, high temperature tail gas is discharged from drying drum's tail gas outlet, high temperature entry through heat exchanger gets into the high temperature gas passageway, carry out the heat exchange with air in the low temperature gas passageway, air admission combustor after the heat exchange, avoid the entering of cold air to influence the combustion efficiency in the combustion chamber, simultaneously tail gas temperature greatly reduced, some harmful substance content greatly reduced such as of tail gas after the cooling.
In this embodiment, the energy saving and emission reduction system for the asphalt mixing plant is provided with a high-temperature gas channel and a low-temperature gas channel in a heat exchanger, a cold air blower is communicated with a low-temperature inlet through a pipeline, an air inlet is communicated with a low-temperature outlet through a pipeline, and a tail gas outlet is communicated with the high-temperature inlet through a pipeline and communicated with a high-temperature outlet through a pipeline. Through the pitch mixing plant energy saving and emission reduction system of above-mentioned optimal design, structural design is reasonable, through adding heat exchanger, the high temperature tail gas in the drying roller carries out the heat exchange with the air before getting into the combustor, on the one hand, has improved high temperature waste heat utilization ratio, improves the temperature when air gets into the combustor, and the fuel in the help combustor fully burns, and on the other hand, high temperature tail gas is after the heat exchange, because its temperature reduces for harmful substance content greatly reduced who contains in the tail gas, thereby reduce harmful gas's discharge.
In a specific implementation manner, the system of this embodiment further includes a tail gas induced draft fan 6, and the tail gas induced draft fan 6 is arranged on the pipeline between the exhaust chimney 5 and the high-temperature outlet, and the exhaust efficiency of the tail gas is improved through the tail gas induced draft fan.
In other specific embodiments, a dust removal device 7 is arranged on a pipeline between the tail gas outlet and the heat exchanger 3, and before heat exchange, dust in the tail gas is removed through the dust removal device, so that the tail gas quantity participating in heat exchange is ensured, and further the heat exchange efficiency is ensured.
Further, in a specific selection of the dust removing device, the dust removing device 7 employs a bag-type dust remover.
When the temperature of the air after heat exchange is too high, the air is expanded, so that the oxygen content in unit intake volume is insufficient, and the combustion efficiency in the combustor is further influenced. In order to solve the above problem, in this embodiment, an air supply valve 8 is disposed on the pipeline between the air inlet and the low temperature outlet, and when the air temperature is too high, the low temperature air is supplied to the air pipeline through the air supply valve, so as to ensure the oxygen supply amount to the burner.
In practical design, the heat exchanger 3 may adopt one or more of cast iron type heat exchanger, plate type heat exchanger, barrel type heat exchanger and steel type heat exchanger.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides an asphalt mixing plant energy saving and emission reduction system which characterized in that includes: the device comprises a burner (1), a drying roller (2), a heat exchanger (3), a cold air blower (4) and a discharge chimney (5);
a combustion port and a tail gas outlet are formed in the drying roller (2), the combustor (1) is installed at the combustion port, and an air inlet is formed in the combustor (1);
a high-temperature inlet, a high-temperature outlet, a low-temperature inlet and a low-temperature outlet are arranged on the heat exchanger (3), a high-temperature gas channel is formed between the high-temperature inlet and the high-temperature outlet, and a low-temperature gas channel is formed between the low-temperature inlet and the low-temperature outlet;
the cold air blower (4) is communicated with the low-temperature inlet through a pipeline, the air inlet is communicated with the low-temperature outlet through a pipeline, and the tail gas outlet is communicated with the high-temperature inlet through a pipeline and communicated with the high-temperature outlet through a pipeline.
2. The energy-saving and emission-reducing system for the asphalt mixing plant according to claim 1, further comprising a tail gas induced draft fan (6), wherein the tail gas induced draft fan (6) is arranged on a pipeline between the discharge chimney (5) and the high-temperature outlet.
3. The energy-saving and emission-reducing system for the asphalt mixing plant according to claim 1, wherein a dust removal device (7) is arranged on a pipeline between the tail gas outlet and the heat exchanger (3).
4. The energy-saving and emission-reducing system for the asphalt mixing plant according to claim 3, wherein the dust removing device (7) adopts a bag-type dust remover.
5. The asphalt mixing plant energy conservation and emission reduction system according to claim 1, wherein an air supplement valve (8) is arranged on a pipeline between the air inlet and the low-temperature outlet.
6. The energy-saving and emission-reducing system for the asphalt mixing plant according to claim 1, wherein the heat exchanger (3) is one or more of a cast iron type heat exchanger, a plate type heat exchanger, a barrel type heat exchanger and a steel type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121713612.7U CN215112663U (en) | 2021-07-26 | 2021-07-26 | Energy-saving and emission-reducing system of asphalt mixing plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121713612.7U CN215112663U (en) | 2021-07-26 | 2021-07-26 | Energy-saving and emission-reducing system of asphalt mixing plant |
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| Publication Number | Publication Date |
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| CN215112663U true CN215112663U (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121713612.7U Active CN215112663U (en) | 2021-07-26 | 2021-07-26 | Energy-saving and emission-reducing system of asphalt mixing plant |
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| Country | Link |
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| CN (1) | CN215112663U (en) |
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2021
- 2021-07-26 CN CN202121713612.7U patent/CN215112663U/en active Active
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