CN214620753U - Heat recovery system for asphalt production of high-grade road - Google Patents
Heat recovery system for asphalt production of high-grade road Download PDFInfo
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- CN214620753U CN214620753U CN202120617057.1U CN202120617057U CN214620753U CN 214620753 U CN214620753 U CN 214620753U CN 202120617057 U CN202120617057 U CN 202120617057U CN 214620753 U CN214620753 U CN 214620753U
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Abstract
The utility model belongs to the technical field of the production of the asphalt of the high-grade road, in particular to a heat recovery system for the asphalt production of the high-grade road, which comprises an oil slurry raw material tank, wherein the oil slurry raw material tank is connected with a decompression fractionating tower through a multistage series heat exchanger in sequence; the heat exchanger in the multistage series heat exchanger comprises a shell and a flow guide pipe arranged in the shell, a plurality of flow guide baffles are arranged in the shell, the bottom ends of two adjacent flow guide baffles are connected with the inner left wall and the inner right wall of the shell respectively, the flow guide pipe penetrates through the flow guide baffles in sequence, heat exchange fins are arranged on the outer wall of the flow guide pipe, and a heat exchange jacket is arranged on the outer wall of the shell. The utility model discloses a set up multistage series heat exchanger and can improve the heat transfer effect, increase the processingquantity, set up a plurality of water conservancy diversion baffles and heat transfer fin simultaneously, multiplicable heat transfer area improves heat exchange efficiency.
Description
Technical Field
The utility model belongs to the technical field of the production of advanced road pitch, concretely relates to advanced road pitch production heat recovery system.
Background
Along with the continuous increase of the investment of highway infrastructure construction in China, the demand of road asphalt is increased year by year, and the track is formed due to insufficient high-temperature stability of asphalt concrete, so that the track is one of the main disease forms of the asphalt pavement of the high-grade highway in China. To solve this problem, it is necessary to use road asphalt of higher quality.
At present, the main process methods for producing asphalt comprise: distillation, oxidation, semi-oxidation, solvent deasphalting, blending, combinations thereof, and the like. The catalytic cracking slurry oil is a byproduct in the petroleum refining process, is mainly rich in aromatic components and colloid, wherein the polycyclic aromatic hydrocarbon accounts for about half of the aromatic components, and is easy to generate oxidative condensation reaction to generate coke due to the unstable active carbon bond, so that the production efficiency of a catalytic cracking device is directly influenced; in addition, it contains small amounts of asphaltenes and catalyst fines. At present, the catalytic slurry is mainly used as fuel oil, the added value is low, and a certain fuel tax is paid. The production of road asphalt by catalytic cracking of slurry oil has become a mature technology.
When the catalytic cracking slurry oil is adopted to produce the road asphalt, the catalytic cracking slurry oil raw material needs to be heated to about 260 ℃ firstly, and then enters a reduced pressure fractionating tower for reduced pressure deep drawing, the raw material is heated mainly by exchanging heat with an asphalt product at present, however, the problems of low working efficiency and the like exist at present.
SUMMERY OF THE UTILITY MODEL
For solving the deficiency of the prior art, the to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, the heat recovery system for the asphalt production of the high-grade road is provided, and the heat exchange efficiency and the heat utilization rate can be improved.
The utility model discloses an adopt technical scheme to realize:
the heat recovery system for the asphalt production of the high-grade road comprises an oil slurry raw material tank, wherein the oil slurry raw material tank is sequentially connected with a pressure-reducing fractionating tower through a multi-stage series heat exchanger, the bottom of the pressure-reducing fractionating tower is connected with a reactor through a heating furnace, and the bottom of the reactor is sequentially connected with the multi-stage series heat exchanger; the heat exchanger in the multistage series heat exchanger comprises a shell and a flow guide pipe arranged in the shell, a plurality of flow guide baffles are arranged in the shell, the bottom ends of two adjacent flow guide baffles are connected with the inner left wall and the inner right wall of the shell respectively, the flow guide pipe penetrates through the flow guide baffles in sequence, heat exchange fins are arranged on the outer wall of the flow guide pipe, and a heat exchange jacket is arranged on the outer wall of the shell.
Preferably, the multistage series heat exchanger comprises at least two stages of heat exchangers.
Preferably, the heat exchange fins are spiral heat exchange fins.
Preferably, the heat exchange jacket is provided with a water inlet and a water outlet, and the heat exchange jacket can further recycle heat.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model discloses a set up multistage series heat exchanger and can improve the heat transfer effect, increase the processingquantity, set up a plurality of water conservancy diversion baffles and heat transfer fin simultaneously, multiplicable heat transfer area improves heat exchange efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of a heat exchanger in the multistage series heat exchanger of the present invention;
in the figure: 1. a slurry head tank; 2. a multi-stage series heat exchanger; 3. a vacuum fractionation column; 4. heating furnace; 5. a reactor; 6. a housing; 7. a flow guide pipe; 8. heat exchange fins; 9. a flow guide baffle plate; 10. a heat exchange jacket; 11. a water inlet; 12. and (7) a water outlet.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-2, the heat recovery system for producing high-grade road asphalt comprises an oil slurry material tank 1, wherein the oil slurry material tank 1 is sequentially connected with a pressure-reducing fractionating tower 3 through a multistage series heat exchanger 2, the bottom of the pressure-reducing fractionating tower 3 is connected with a reactor 5 through a heating furnace 4, and the bottom of the reactor 5 is sequentially connected with the multistage series heat exchanger 2; the multistage heat exchanger 2 of establishing ties be two-stage heat exchanger, heat exchanger all includes shell 6 and the honeycomb duct 7 of locating in the shell 6 in the multistage heat exchanger 2 of establishing ties, is equipped with a plurality of water conservancy diversion baffles 9 in the shell 6, the bottom of two adjacent water conservancy diversion baffles 9 is connected with the interior left wall and the interior right wall of shell 6 respectively, honeycomb duct 7 runs through a plurality of water conservancy diversion baffles 9 in proper order, honeycomb duct 7 outer wall is equipped with spiral heat transfer fin 8, be equipped with heat transfer on the outer wall of shell 6 and press from both sides the cover 10, heat transfer press from both sides and be equipped with water inlet 11 and delivery port 12 on the cover 10.
When the device works, raw materials in an oil slurry raw material tank 1 are heated to about 260 ℃ through a multistage series heat exchanger 2, then enter a reduced pressure fractionating tower 3, are fractionated under reduced pressure, heavy wax oil (220 ℃) is discharged from the bottom of the reduced pressure fractionating tower 3, enters a heating furnace 4 through a heavy wax oil pump, is heated to about 380 ℃ and then enters a reactor 5 for reaction, a concentrated high-grade road cold asphalt product is obtained at the bottom of the reactor 5, is pumped out under the pressure of 0.4MPa through an asphalt pump, is discharged out of the device after being subjected to heat exchange and cooling through the multistage series heat exchanger 2, and cold water is introduced into a water inlet 11 in the inner diameter of a heat exchange jacket 10, is subjected to heat exchange and heating, and then is discharged and utilized through a water outlet 12.
Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.
Claims (4)
1. The utility model provides a heat recovery system for advanced road asphalt production, includes slurry oil head tank (1), its characterized in that: the oil slurry raw material tank (1) is sequentially connected with a decompression fractionating tower (3) through a multistage series heat exchanger (2), the bottom of the decompression fractionating tower (3) is connected with a reactor (5) through a heating furnace (4), and the bottom of the reactor (5) is sequentially connected with the multistage series heat exchanger (2); heat exchanger all includes shell (6) and honeycomb duct (7) of locating in shell (6) in multistage series connection heat exchanger (2), is equipped with a plurality of water conservancy diversion baffles (9) in shell (6), and the bottom of two adjacent water conservancy diversion baffles (9) is connected with the interior left wall and the interior right wall of shell (6) respectively, honeycomb duct (7) run through a plurality of water conservancy diversion baffles (9) in proper order, and honeycomb duct (7) outer wall is equipped with heat transfer fin (8), it presss from both sides cover (10) to be equipped with the heat transfer on the outer wall of shell (6).
2. The advanced road asphalt production heat recovery system of claim 1, wherein: the multistage series heat exchanger (2) at least comprises two stages of heat exchangers.
3. The advanced road asphalt production heat recovery system of claim 1, wherein: the heat exchange fins (8) are spiral heat exchange fins.
4. The advanced road asphalt production heat recovery system of claim 1, wherein: the heat exchange jacket (10) is provided with a water inlet (11) and a water outlet (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120617057.1U CN214620753U (en) | 2021-03-26 | 2021-03-26 | Heat recovery system for asphalt production of high-grade road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120617057.1U CN214620753U (en) | 2021-03-26 | 2021-03-26 | Heat recovery system for asphalt production of high-grade road |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214620753U true CN214620753U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120617057.1U Active CN214620753U (en) | 2021-03-26 | 2021-03-26 | Heat recovery system for asphalt production of high-grade road |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214620753U (en) |
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2021
- 2021-03-26 CN CN202120617057.1U patent/CN214620753U/en active Active
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