CN210561598U - Hot blast stove device for eliminating water vapor at exhaust port of asphalt mixing plant - Google Patents
Hot blast stove device for eliminating water vapor at exhaust port of asphalt mixing plant Download PDFInfo
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- CN210561598U CN210561598U CN201921202481.9U CN201921202481U CN210561598U CN 210561598 U CN210561598 U CN 210561598U CN 201921202481 U CN201921202481 U CN 201921202481U CN 210561598 U CN210561598 U CN 210561598U
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Abstract
A hot blast stove device for eliminating water vapor at an exhaust port of an asphalt mixing plant comprises a hot blast stove, a burner, a connecting pipe and a chimney, wherein the hot blast stove comprises a shell and an inner hearth sleeved in the shell, the shell is provided with an air inlet connected with the exhaust port of the asphalt mixing plant, and a tail gas channel is formed between the inner wall of the shell and the outer wall of the inner hearth; the burner is connected with the front end of the inner hearth and used for supplying heat to the inner hearth; one end of the connecting pipe is connected with the shell, the other end of the connecting pipe is connected with the chimney, tail gas flows along the tail gas channel to the chimney direction and is mixed and heated with hot gas flowing out of the inner hearth, the tail gas enters the chimney through the connecting pipe to be discharged, the temperature of the heated tail gas is higher than the dew point temperature, the tail gas is discharged into the atmosphere and then is not reduced to be below the dew point temperature before being fully diffused, the phenomenon that water vapor is not generated at the outlet of the chimney is guaranteed, and visual pollution is.
Description
Technical Field
The utility model belongs to pitch preparation field, concretely relates to eliminate hot-blast furnace device of pitch mixing plant gas vent steam.
Background
In the production process of the asphalt mixing plant, a large amount of high-temperature and high-moisture-content tail gas is discharged into the atmosphere, the temperature of the tail gas is rapidly reduced after the tail gas meets the atmosphere with very low ambient temperature, when the temperature of the tail gas is reduced to be below the dew point temperature, water vapor in the tail gas is condensed into liquid water drops, a large amount of water vapor is formed at the air outlet, and strong visual pollution is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a hot blast stove device for eliminating the steam at the exhaust port of an asphalt mixing plant.
The utility model adopts the following technical scheme:
a hot blast stove device for eliminating water vapor at an exhaust port of an asphalt mixing plant comprises a hot blast stove, a burner, a connecting pipe and a chimney, wherein the hot blast stove comprises a shell and an inner hearth sleeved in the shell, the shell is provided with an air inlet connected with the exhaust port of the asphalt mixing plant, and a tail gas channel is formed between the inner wall of the shell and the outer wall of the inner hearth; the burner is connected with the front end of the inner hearth and used for supplying heat to the inner hearth; one end of the connecting pipe is connected with the shell, the other end of the connecting pipe is connected with the chimney, tail gas flows along the tail gas channel to the chimney direction and is mixed with hot gas flowing out of the inner hearth for heating, and then enters the chimney through the connecting pipe to be discharged.
Further, the air inlet is connected with the exhaust port of the asphalt mixing plant through an air inlet pipe, and the pipe diameter of the air inlet pipe is gradually reduced along the air inlet direction of tail gas.
Furthermore, the minimum pipe diameter of the air inlet pipe is smaller than or equal to the difference between the radius of the outer shell and the radius of the inner hearth.
Furthermore, the air inlet is arranged on the side wall of the shell close to one end of the combustor, and the air inlet direction of the tail gas is perpendicular to the tail gas channel.
Furthermore, the tail end of the inner hearth is provided with a connecting cylinder, and the wall of the connecting cylinder is provided with a plurality of air holes.
Furthermore, the sum of the lengths of the inner hearth and the connecting cylinder is two thirds of the length of the shell.
Further, the length of the inner hearth is one half of the length of the outer shell.
Furthermore, the connecting pipe comprises a connecting section and a drainage section which are sequentially connected, and the drainage section is bent upwards and connected with the chimney.
Furthermore, the tail end of the shell is of a necking structure.
Furthermore, the outer surface of the shell, the outer surface of the connecting pipe and the outer surface of the chimney are all provided with heat insulation layers.
It can be known from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: tail gas exhausted from an exhaust port of the asphalt mixing plant enters a tail gas channel through a gas inlet, is uniformly mixed with hot gas exhausted from an inner hearth, and is exhausted from a chimney, the temperature of the heated tail gas is higher than the dew point temperature, and the temperature of the tail gas is not reduced to be lower than the dew point temperature before the tail gas is fully diffused after being exhausted into the atmosphere, so that no water vapor phenomenon is formed at an outlet of the chimney, and visual pollution is reduced;
the tail end of the inner hearth is provided with a connecting cylinder, the wall of the connecting cylinder is provided with air holes, the connecting cylinder can prevent high-temperature hot gas generated by the burner from radiating heat on the inner side wall of the shell, and meanwhile, tail gas flowing in the tail gas channel can enter the connecting cylinder through the air holes to be mixed with the hot gas, so that the contact area of the tail gas and the hot gas is increased, and the heat exchange efficiency of the tail gas and the hot gas is ensured;
the gas inlet is arranged on the side wall of the shell, and the gas inlet direction of the tail gas is vertical to the tail gas channel, so that the tail gas forms rotational flow in the tail gas channel and the chimney, the resistance of the burner is reduced, the tail gas can be promoted to fully exchange heat with high-temperature gas generated by the burner, and the gas temperature at the outlet of the chimney is uniformly distributed;
an inner hearth is arranged in the shell, and the air inlet is arranged on the side wall of one end, close to the burner, of the shell, so that tail gas entering from the air inlet cannot be contacted with flame of the burner;
the outer surface of the shell, the outer surface of the connecting pipe and the outer surface of the chimney are provided with heat insulation layers so as to reduce heat loss in the tail gas flowing process and ensure that the temperature of the tail gas flowing out from the gas outlet of the chimney cannot be reduced below the dew point temperature.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a schematic structural diagram of a second embodiment of the present invention;
in the figure, 1-hot blast stove, 2-burner, 3-connecting pipe, 4-chimney, 5-air inlet pipe, 6-tail gas channel, 11-shell, 12-inner hearth, 13-connecting cylinder, 31-connecting section, 32-drainage section, 111-air inlet, 131-air vent.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Referring to fig. 1 to 3, the hot blast stove device for eliminating the steam at the exhaust port of the asphalt mixing plant comprises a hot blast stove 1, a burner 2, a connecting pipe 3 and a chimney 4.
The hot blast stove comprises two embodiments, in the first embodiment, the hot blast stove 1 comprises a shell 11 and an inner hearth 12, an air inlet 111 connected with an exhaust port of an asphalt mixing plant is formed in the shell 11, the air inlet 111 is connected with the exhaust port of the asphalt mixing plant through an air inlet pipe 5, the pipe diameter of the air inlet pipe 5 is gradually reduced along the air inlet direction of tail gas, the minimum pipe diameter of the air inlet pipe 5 is smaller than or equal to the difference between the radius of the shell 11 and the radius of the inner hearth 12, and the tail gas entering from an air inlet cannot form huge impact on the inner hearth 12; the inner hearth 12 is arranged in the shell 11 in a sleeved mode and extends along the length direction of the shell 11, a tail gas channel 6 is formed between the inner wall of the shell 11 and the outer wall of the inner hearth 12, the length of the inner hearth 12 is half of that of the shell 11, the inner hearth 12 is made of high-temperature resistant materials to guarantee stable combustion of the combustor 2, specifically, the gas inlet 111 is arranged on the side wall, close to one end of the combustor 2, of the shell 11, the air inlet direction of tail gas is perpendicular to the tail gas channel 6, so that the tail gas forms rotational flow in the tail gas channel 6 and the chimney 4, resistance of the combustor 2 is reduced, the tail gas and high-temperature gas generated by the combustor 2 can be made to conduct sufficient heat exchange, and the gas temperature at the outlet of; furthermore, the outer surface of the shell 11 is provided with a heat insulation layer, so that the heat loss in the tail gas flowing process is reduced.
The structure of the second embodiment is basically the same as that of the first embodiment, and the difference is that the hot blast stove 1 further comprises a connecting cylinder 13 which is arranged in the shell 11 and connected with the tail end of the inner hearth 12, the cylinder wall of the connecting cylinder 13 is uniformly provided with a plurality of air holes 131 to prevent the heat radiation of high-temperature hot gas generated by the burner 2 to the inner wall of the shell 11, meanwhile, tail gas flowing in the tail gas channel 6 can enter the connecting cylinder 13 through the air holes 131 to be mixed with the hot gas, the contact area between the tail gas and the hot gas is increased, the heat exchange efficiency between the tail gas and the hot gas is ensured, the diameter of the connecting cylinder 13 is the same as that of the inner hearth 12, and the sum of the lengths of the inner hearth 12 and the.
Combustor 2 sets up the front end at hot-blast furnace 1, and the front end sealing connection with interior furnace 12 for to interior furnace 12 heat supply, be connected combustor 2 and interior furnace 12, guarantee that the tail gas that gets into from air inlet 111 can not contact with the flame of combustor 2 front end, guarantee combustor 2's safe in utilization, combustor 2 is combustor 2 commonly used in the pitch preparation field, and its specific structure is no longer further elaborated on this side.
3 one ends of connecting pipe are connected with shell 11, the other end is connected with chimney 4, tail gas flows and the steam hybrid heating who flows from interior furnace 12 along tail gas channel 6 to 4 directions of chimney, 3 entering chimney 4 discharges of rethread connecting pipe, it is concrete, connecting pipe 3 is including linkage segment 31 and the drainage segment 32 that sets gradually, drainage segment 32 kickup is connected with chimney 4, guarantee that tail gas can flow into chimney 4 fast, the tail end of shell 11 is the throat structure, the minimum diameter of its tail end is unanimous with linkage segment 31's diameter, it is further, the surface of connecting pipe 3 is provided with the heat preservation insulating layer, with the thermal loss of tail gas after the reduction heating at the flow in-process.
The outer surface of the chimney 4 is provided with a heat insulation layer to reduce the heat loss of the heated tail gas in the flowing process.
During the operation, the tail gas of pitch mixing plant gas vent passes through intake pipe 5 and gets into in tail gas passageway 6, and after the steam hybrid heating that flows along 6 whirl of tail gas passageway and 12 tail ends of interior furnace, rethread connecting pipe 3 gets into chimney 4 and discharges, and the temperature is higher than dew point temperature after the tail gas heating, before abundant diffusion after discharging into the atmosphere, the temperature can not drop below dew point temperature, guarantees that chimney 4 export does not have the steam phenomenon to form, reduces "visual pollution".
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.
Claims (10)
1. The utility model provides an eliminate hot-blast furnace device of pitch mixing plant gas vent steam which characterized in that: the device comprises a hot blast stove, a burner, a connecting pipe and a chimney, wherein the hot blast stove comprises a shell and an inner hearth sleeved in the shell, the shell is provided with an air inlet connected with an exhaust port of an asphalt mixing plant, and a tail gas channel is formed between the inner wall of the shell and the outer wall of the inner hearth; the burner is connected with the front end of the inner hearth and used for supplying heat to the inner hearth; one end of the connecting pipe is connected with the shell, the other end of the connecting pipe is connected with the chimney, tail gas flows along the tail gas channel to the chimney direction and is mixed with hot gas flowing out of the inner hearth for heating, and then enters the chimney through the connecting pipe to be discharged.
2. The hot blast stove device for eliminating the steam at the exhaust port of the asphalt mixing plant according to claim 1, characterized in that: the air inlet is connected with the exhaust port of the asphalt mixing plant through an air inlet pipe, and the pipe diameter of the air inlet pipe is gradually reduced along the air inlet direction of tail gas.
3. The hot blast stove device for eliminating the steam at the exhaust port of the asphalt mixing plant according to claim 2, characterized in that: the minimum pipe diameter of the air inlet pipe is smaller than or equal to the difference between the radius of the outer shell and the radius of the inner hearth.
4. The hot blast stove device for eliminating the steam at the exhaust port of the asphalt mixing plant according to the claim 1, 2 or 3, characterized in that: the air inlet is arranged on the side wall of the shell close to one end of the combustor, and the air inlet direction of the tail gas is perpendicular to the tail gas channel.
5. The hot blast stove device for eliminating the steam at the exhaust port of the asphalt mixing plant according to the claim 1, 2 or 3, characterized in that: the tail end of the inner hearth is provided with a connecting cylinder, and the wall of the connecting cylinder is provided with a plurality of air holes.
6. The hot blast stove device for eliminating the steam at the exhaust port of the asphalt mixing plant according to claim 5, characterized in that: the sum of the lengths of the inner hearth and the connecting cylinder is two thirds of the length of the shell.
7. The hot blast stove device for eliminating the steam at the exhaust port of the asphalt mixing plant according to the claim 1, 2 or 3, characterized in that: the length of the inner hearth is one half of the length of the outer shell.
8. The hot blast stove device for eliminating the steam at the exhaust port of the asphalt mixing plant according to the claim 1, 2 or 3, characterized in that: the connecting pipe comprises a connecting section and a drainage section which are sequentially connected, and the drainage section is bent upwards and connected with the chimney.
9. The hot blast stove device for eliminating the steam at the exhaust port of the asphalt mixing plant according to the claim 1, 2 or 3, characterized in that: the tail end of the shell is of a necking structure.
10. The hot blast stove device for eliminating the steam at the exhaust port of the asphalt mixing plant according to the claim 1, 2 or 3, characterized in that: and the outer surface of the shell, the outer surface of the connecting pipe and the outer surface of the chimney are all provided with heat insulation layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921202481.9U CN210561598U (en) | 2019-07-29 | 2019-07-29 | Hot blast stove device for eliminating water vapor at exhaust port of asphalt mixing plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921202481.9U CN210561598U (en) | 2019-07-29 | 2019-07-29 | Hot blast stove device for eliminating water vapor at exhaust port of asphalt mixing plant |
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| CN210561598U true CN210561598U (en) | 2020-05-19 |
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| CN201921202481.9U Active CN210561598U (en) | 2019-07-29 | 2019-07-29 | Hot blast stove device for eliminating water vapor at exhaust port of asphalt mixing plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211068A (en) * | 2020-09-28 | 2021-01-12 | 山东省大通公路工程有限责任公司 | Energy-saving asphalt mixing station |
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2019
- 2019-07-29 CN CN201921202481.9U patent/CN210561598U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211068A (en) * | 2020-09-28 | 2021-01-12 | 山东省大通公路工程有限责任公司 | Energy-saving asphalt mixing station |
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