CN218721622U - Recovery unit of flue gas heat energy - Google Patents
Recovery unit of flue gas heat energy Download PDFInfo
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- CN218721622U CN218721622U CN202222602624.3U CN202222602624U CN218721622U CN 218721622 U CN218721622 U CN 218721622U CN 202222602624 U CN202222602624 U CN 202222602624U CN 218721622 U CN218721622 U CN 218721622U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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Abstract
The utility model discloses a recovery unit of flue gas heat energy, which belongs to the technical field of asphalt production equipment and comprises a heat exchanger, a heat-conducting oil pump, an asphalt conveying pipe and a heating pipe, wherein the heat-conducting oil pump is internally provided with a heat-conducting oil coil pipe, and the heating pipe is sleeved outside the asphalt conveying pipe; the heat exchanger is connected with a smoke outlet of the heat conducting oil boiler; and the heat conduction oil pump is used for conveying the heat conduction oil in the heating pipe to the heat conduction oil coil. Through set up heat conduction oil coil pipe in heat exchanger, the high temperature flue gas that heat conduction oil boiler during operation produced can be carried to heat exchanger in and carry out the heat exchange with the conduction oil in the heat conduction oil coil pipe for the conduction oil can heat up, thereby realizes the recovery to flue gas heat energy. The heating pipe is sleeved outside the asphalt conveying pipe, and the heat conduction oil is heated and then conveyed to the heating pipe, so that the matrix asphalt in the asphalt conveying pipe is heated, and the problems that the heat energy contained in the flue gas is effectively utilized, and the pipeline is blocked and normal conveying of the pipeline is influenced in the conveying process of the matrix asphalt are solved.
Description
Technical Field
The utility model relates to a pitch production facility technical field, in particular to recovery unit of flue gas heat energy.
Background
The heat conduction oil boiler adopts heat conduction oil as a heat energy carrier, has the advantages of high system heat utilization rate, high conveying temperature, convenient operation and maintenance and the like, is widely applied to the industrial fields of asphalt (such as heating an asphalt heating tank) and the like which need high temperature, but the exhaust gas temperature of the heat conduction oil boiler can reach more than 350 ℃ in the operation process, the part of the exhaust gas is generally directly discharged into the air, and the heat energy contained in the exhaust gas can not be effectively utilized.
In addition, when production modified asphalt, matrix asphalt need be modified in the asphalt heating jar through the pipe-line transportation, and when matrix asphalt carried in the pipeline, the outside of pipeline can be transmitted to the heat in the matrix asphalt for matrix asphalt can appear cooling in transportation process, serious can appear blockking up the pipeline and then influence the problem that the pipeline normally carried.
It is seen that improvements and enhancements to the prior art are needed.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing disadvantages of the prior art, an object of the present invention is to provide a flue gas heat energy recovery device, which is used to recover the heat energy of the flue gas discharged from the heat-conducting oil boiler and solve the problem of asphalt solidification in the pipeline.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a recovery unit of heat energy of flue gas, including heat exchanger, heat conduction oil pump, pitch delivery pipe, and the heating pipe that is set up outside the pitch delivery pipe; the heat exchanger is connected with a smoke outlet of the heat conducting oil boiler; and the heat conduction oil pump is used for conveying the heat conduction oil in the heating pipe to the heat conduction oil coil.
Furthermore, the device for recovering the heat energy of the flue gas also comprises a flue gas inlet pipe and a flue gas outlet pipe; the smoke outlet pipe is arranged at the upper part of the heat exchanger; the smoke inlet pipe is connected with the smoke outlet of the heat conduction oil boiler and communicated with the lower part of the heat exchanger.
In the device for recovering the heat energy of the flue gas, a heat-conducting oil coil is arranged in the heat exchanger, the heat-conducting oil coil is in a snake shape, and the oil inlet end and the oil outlet end of the heat-conducting oil coil vertically and downwards extend out of the heat exchanger respectively.
In the flue gas heat energy recovery device, the number of the smoke inlet pipes is not less than two, and the smoke inlet pipes are communicated with the lower part of the heat exchanger and are respectively connected with the smoke outlets of the heat conducting oil boilers.
In the device for recovering the heat energy of the flue gas, the smoke inlet pipe comprises a first pipe body and a second pipe body which are communicated with each other; the first pipe body is connected with a smoke outlet of the heat conduction oil boiler, and a pipe orifice of the first pipe body is fixedly sleeved with a first ring handle; the second pipe body is communicated with the heat exchanger, and a pipe orifice of the second pipe body is fixedly sleeved with a second ring handle; the first and second ring handles may be assembled to each other.
Furthermore, the device for recovering the heat energy of the flue gas also comprises a controller and a thermometer; the thermometer is arranged on the heating pipe, and the thermometer and the heat conduction oil pump are both electrically connected with the controller.
Furthermore, the device for recovering the heat energy of the flue gas also comprises two oil conveying pipes connected with the heating pipe; the two oil conveying pipes are respectively connected with the oil inlet and the oil outlet of the heat-conducting oil coil pipe, and the outer walls of the oil conveying pipes are provided with first heat-insulating layers; the heat conduction oil pump is arranged on one of the oil delivery pipes.
In the boiler flue gas heat energy recovery device, a second heat insulation layer is arranged on the outer wall of the heating pipe.
Has the advantages that:
the utility model provides a recovery unit of flue gas heat energy through set up heat conduction oil coil pipe in heat exchanger, the high temperature flue gas that the heat conduction oil boiler during operation produced can carry to heat exchanger in and carry out the heat exchange with the conduction oil in the heat conduction oil coil pipe for the conduction oil can heat up, thereby realizes the recovery to flue gas heat energy. The heating pipe is sleeved outside the asphalt conveying pipe, and the heat conduction oil is heated and then conveyed to the heating pipe, so that the matrix asphalt in the asphalt conveying pipe is heated, the heat energy contained in the flue gas is effectively utilized, and meanwhile, the problems that the pipeline is blocked and the normal conveying of the pipeline is influenced in the conveying process of the matrix asphalt are solved, and the matrix asphalt can be smoothly conveyed to the asphalt heating tank for modification treatment.
Drawings
Fig. 1 is a schematic structural view of the flue gas heat energy recovery device provided by the present invention.
Fig. 2 is a schematic structural view of the heat exchanger.
Fig. 3 is an enlarged schematic view of a portion a in fig. 2.
FIG. 4 is a diagram showing the relative position of the smoke barrier and the second tube.
Reference numerals:
1-a heat exchanger; 2-heat conducting oil coil pipe; 3-a heat-conducting oil pump; 4-asphalt conveying pipe; 5-heating the tube;
6-smoke inlet pipe; 61-a first tube; 62-a second tube; 63-a first ring handle; 64-a second ring handle; 641-positioning holes;
7-a screw; 8-a smoke barrier; 9-discharging the smoke tube; 10-a thermometer; 11-an oil delivery pipe; 12-a first insulating layer; 13-a second thermally insulating layer; 14-a heat transfer oil boiler; 15-a matrix asphalt storage tank; 16-a bitumen heating tank; 17-asphalt pump; 18-bolt.
Detailed Description
The utility model provides a recovery unit of flue gas heat energy, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the following refers to the attached drawing and the embodiment is lifted the utility model discloses do further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
As shown in fig. 1, the utility model provides a recovery device of flue gas heat energy, which comprises a heat exchanger 1 with a heat conducting oil coil 2 inside, a heat conducting oil pump 3, an asphalt conveying pipe 4 and a heating pipe 5 sleeved outside the asphalt conveying pipe 4; the heat exchanger 1 is connected with a smoke outlet of the heat conducting oil boiler 14; the heat conduction oil pump 3 is used for conveying heat conduction oil in the heating pipe 5 to the heat conduction oil coil 2 for heat exchange, and the heat conduction oil is conveyed back to the heating pipe 5 after being heated.
As shown in fig. 1, the asphalt delivery pipe 4 is provided with an asphalt pump 17, and asphalt in the base asphalt storage tank 15 can be delivered to the asphalt heating tank 16 through the asphalt delivery pipe 4 by the asphalt pump 17 for modification treatment.
When the heat conduction oil boiler 14 works, high-temperature flue gas generated by the boiler enters the heat exchanger 1 and exchanges heat with heat conduction oil in the heat conduction oil coil 2, so that the heat conduction oil can be heated, and the heat energy of the flue gas can be recycled. The heat conducting oil is heated and then is delivered to the heating pipe 5 through the heat conducting oil pump 3, so that the matrix asphalt in the asphalt delivery pipe 4 is heated, the problems that the pipeline is blocked and normal delivery of the pipeline is affected in the delivery process of the matrix asphalt can be solved, and the matrix asphalt can be smoothly delivered to the asphalt heating tank 16 for modification treatment. After the heat conduction oil is absorbed by the matrix asphalt, the heat conduction oil can be conveyed to the heat conduction oil coil 2 through the heat conduction oil pump 3 and exchanges heat with the exhaust smoke of the boiler, so that the heat conduction oil is circulated continuously, the heat energy contained in the smoke can be effectively utilized, and meanwhile, the heat conduction oil in the heating pipe 5 has enough temperature to continuously heat the matrix asphalt during conveying.
As shown in fig. 1, in an embodiment, the apparatus for recovering heat energy from flue gas further comprises a flue gas inlet pipe 6 and a flue gas outlet pipe 9; the smoke outlet pipe 9 is arranged at the upper part of the heat exchanger 1; the smoke inlet pipe 6 is connected with the smoke outlet of the heat conducting oil boiler 14, and the smoke inlet pipe 6 is communicated with the lower part of the heat exchanger 1.
When the heat conducting oil boiler 14 works, the generated flue gas enters the heat exchanger 1 from the lower part of the heat exchanger 1, and then the flue gas in the heat exchanger 1 gradually rises (power comes from a boiler burner) and is discharged from the smoke outlet pipe 9, however, the smoke discharging process needs a certain time, so that the flue gas can fully exchange heat with the heat conducting oil, and the recovery efficiency of the heat energy of the flue gas can be improved.
As shown in fig. 1, in one embodiment, the conduction oil coil 2 has a serpentine shape, and an oil inlet end and an oil outlet end of the conduction oil coil 2 respectively vertically extend downward out of the heat exchanger 1. Through designing conduction oil coil 2 into snakelike, when the flue gas rises gradually, the flue gas can carry out the heat exchange with conduction oil coil 2 fully, and then in the conduction oil with heat transfer to coil pipe for the heat energy of flue gas is effectively retrieved.
In one embodiment, as shown in fig. 1, the number of the smoke inlet pipes 6 is not less than two, and the smoke inlet pipes 6 are all communicated with the lower portion of the heat exchanger 1 and are respectively connected with the smoke outlets of the plurality of heat transfer oil boilers 14, so that not only can the requirement of recovering the heat energy of the smoke of the plurality of heat transfer oil boilers 14 be met, but also the heat transfer oil in the heating pipe 5 can be ensured to have enough temperature to continuously heat the conveyed matrix asphalt.
As shown in fig. 1 and 2, in one embodiment, the smoke inlet pipe 6 includes a first pipe body 61 and a second pipe body 62 which are communicated with each other; the first pipe body 61 is connected with the smoke exhaust port of the heat conduction oil boiler 14, and a first ring handle 63 is fixedly sleeved on the pipe orifice of the first pipe body 61; the second pipe 62 is communicated with the heat exchanger 1, and a second ring handle 64 is fixedly sleeved at the pipe orifice of the second pipe 62; the first ring handle 63 and the second ring handle 64 can be assembled with each other, and when the first ring handle 63 and the second ring handle 64 are assembled together, the first pipe 61 and the second pipe 62 are connected to form the smoke inlet pipe 6, so that a plurality of second pipes 62 can be reserved at the lower part of the heat exchanger 1 in the embodiment, and when a plurality of heat conduction oil boilers 14 are required to be connected with the heat exchanger 1, the first pipe 61 is only required to be led to the pipe orifice of the second pipe 62 for assembly.
As shown in fig. 2 and 3, a screw 7 can be inserted into the first ring handle 63, and a positioning hole 641 for matching with the screw 7 can be disposed on the second ring handle 64. When the first and second ring handles 63 and 64 are assembled together, the screw 7 is inserted into the first and second ring handles 63 and 64 at the same time, and the screw is sleeved with the bolt 18 for locking the first and second ring handles 63 and 64.
As shown in fig. 4, when the second pipe 62 is not connected to the first pipe 61, in order to prevent the flue gas in the heat exchanger 1 from overflowing from the second pipe 62 and improve the heat energy recovery efficiency, a circular smoke barrier 8 may be disposed at the pipe opening of the second pipe 62; the connection of the smoke barrier 8 and the second tube 62 can be made by assembling the first ring handle 63 and the second ring handle 64.
As shown in fig. 1, in an embodiment, the flue gas heat energy recovery device further includes a controller and a thermometer 10; the thermometer 10 is arranged on the heating pipe 5, and the thermometer 10 and the heat conduction oil pump 3 are both electrically connected with the controller. The thermometer 10 can monitor the temperature of the heat conduction oil in the heating pipe 5, when the temperature of the heat conduction oil in the heating pipe 5 is lower, the controller can control the heat conduction oil pump 3 to accelerate the flow velocity of the heat conduction oil in the heat conduction oil coil pipe 2, so that the heat exchange frequency of the heat conduction oil can be increased, the temperature of the heat conduction oil in the heating pipe 5 is not too low, and the substrate asphalt in the asphalt conveying pipe 4 can be effectively heated.
As shown in fig. 1, in an embodiment, the flue gas heat energy recovery device further includes two oil pipelines 11 connected to the heating pipe 5; the two oil pipelines 11 are respectively connected with an oil inlet and an oil outlet of the heat conduction oil coil 2, and a first heat insulation layer 12 is arranged on the outer wall of each oil pipeline 11; the heat-conducting oil pump 3 is arranged on one oil delivery pipe 11. The first heat insulation layer 12 is arranged on the oil delivery pipe 11, so that heat loss of heat conduction oil during back-and-forth conveying between the heat exchanger 1 and the heating pipe 5 can be reduced, and the utilization efficiency of heat energy is further improved.
In one embodiment, as shown in fig. 1, the outer wall of the heating pipe 5 is provided with a second heat insulation layer 13, so that the heat transferred from the heat conducting oil in the heating pipe 5 to the outside of the pipe can be reduced, and further, the substrate asphalt in the asphalt conveying pipe 4 can be effectively heated.
To sum up, the utility model provides a recovery unit of flue gas heat energy through set up the heat conduction oil coil pipe in heat exchanger, the high temperature flue gas that the heat conduction oil boiler during operation produced can carry to heat exchanger in and carry out the heat exchange with the conduction oil in the heat conduction oil coil pipe for the conduction oil can heat up, thereby realizes the recovery to flue gas heat energy. The heating pipe is sleeved outside the asphalt conveying pipe, and the heat conduction oil is heated and then conveyed to the heating pipe, so that the matrix asphalt in the asphalt conveying pipe is heated, the heat energy contained in the flue gas is effectively utilized, and meanwhile, the problems that the pipeline is blocked and the normal conveying of the pipeline is influenced in the conveying process of the matrix asphalt are solved, and the matrix asphalt can be smoothly conveyed to the asphalt heating tank for modification treatment.
It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications should fall within the scope of the appended claims.
Claims (8)
1. The device for recovering the heat energy of the flue gas is characterized by comprising a heat exchanger, a heat-conducting oil pump, an asphalt conveying pipe and a heating pipe sleeved outside the asphalt conveying pipe; the heat exchanger is connected with a smoke outlet of the heat conducting oil boiler; and the heat conduction oil pump is used for conveying the heat conduction oil in the heating pipe to the heat conduction oil coil.
2. The flue gas heat energy recovery device of claim 1, further comprising a flue gas inlet pipe and a flue gas outlet pipe; the smoke outlet pipe is arranged at the upper part of the heat exchanger; the smoke inlet pipe is connected with the smoke outlet of the heat conducting oil boiler and communicated with the lower part of the heat exchanger.
3. The flue gas heat energy recovery device of claim 2, wherein a heat conducting oil coil is arranged in the heat exchanger; the heat conduction oil coil is snakelike, and the oil inlet end and the oil outlet end of the heat conduction oil coil vertically extend out of the heat exchanger downwards respectively.
4. The device for recovering the heat energy of the flue gas as claimed in claim 2, wherein the number of the smoke inlet pipes is not less than two, and the smoke inlet pipes are communicated with the lower part of the heat exchanger and respectively connected with the smoke outlets of the plurality of heat conducting oil boilers.
5. The flue gas heat energy recovery device of claim 4, wherein the smoke inlet pipe comprises a first pipe body and a second pipe body which are communicated with each other; the first pipe body is connected with a smoke exhaust port of the heat conduction oil boiler, and a first ring handle is fixedly sleeved on a pipe orifice of the first pipe body; the second pipe body is communicated with the heat exchanger, and a pipe orifice of the second pipe body is fixedly sleeved with a second ring handle; the first and second ring handles may be assembled to each other.
6. The flue gas heat energy recovery device of claim 1, further comprising a controller and a thermometer; the thermometer is arranged on the heating pipe, and the thermometer and the heat conduction oil pump are both electrically connected with the controller.
7. The recovery device of the heat energy of the flue gas of claim 1, further comprising two oil pipelines connected with the heating pipe; the two oil conveying pipes are respectively connected with the oil inlet and the oil outlet of the heat-conducting oil coil pipe, and the outer walls of the oil conveying pipes are provided with first heat-insulating layers; the heat conduction oil pump is arranged on one of the oil delivery pipes.
8. The flue gas heat energy recovery device of claim 1, wherein the outer wall of the heating pipe is provided with a second heat insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222602624.3U CN218721622U (en) | 2022-09-28 | 2022-09-28 | Recovery unit of flue gas heat energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222602624.3U CN218721622U (en) | 2022-09-28 | 2022-09-28 | Recovery unit of flue gas heat energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218721622U true CN218721622U (en) | 2023-03-24 |
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ID=85638379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222602624.3U Active CN218721622U (en) | 2022-09-28 | 2022-09-28 | Recovery unit of flue gas heat energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218721622U (en) |
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2022
- 2022-09-28 CN CN202222602624.3U patent/CN218721622U/en active Active
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