CN216106787U - Modified asphalt production system - Google Patents
Modified asphalt production system Download PDFInfo
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- CN216106787U CN216106787U CN202121979124.0U CN202121979124U CN216106787U CN 216106787 U CN216106787 U CN 216106787U CN 202121979124 U CN202121979124 U CN 202121979124U CN 216106787 U CN216106787 U CN 216106787U
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Abstract
The utility model relates to the technical field of modified asphalt production, in particular to a modified asphalt production system. Comprises a first reaction kettle, a multi-material heating furnace and a second reaction kettle; the bottom outlet of the first reaction kettle is connected with the lower inlet of the multi-material heating furnace through a first pipeline, the upper outlet of the multi-material heating furnace is connected with the upper inlet of the first reaction kettle through a second pipeline, the medium-temperature asphalt raw material pipeline is connected with the second pipeline, and the top outlet of the first reaction kettle is connected with the noncondensable gas pipeline; an outlet at the bottom of the second reaction kettle is connected with a lower inlet of the multi-material heating furnace through a third pipeline, an upper outlet of the multi-material heating furnace is connected with an upper inlet of the second reaction kettle through a fourth pipeline, and an outlet at the top of the second reaction kettle is connected with a non-condensable gas pipeline; the third pipeline is connected with the modified asphalt product pipeline, and two ends of the intermediate product pipeline are respectively connected with the first pipeline and the third pipeline. Short flow, simple operation, less equipment, less investment, small occupied area and high product quality.
Description
Technical Field
The utility model relates to the technical field of modified asphalt production, in particular to a modified asphalt production system.
Background
The typical production methods of modified asphalt at home and abroad mainly comprise a vacuum flash evaporation method and a thermal polycondensation method. Wherein, the vacuum flash evaporation method is not ideal in product quality and is rarely adopted at present, so the thermal polycondensation method is gradually popularized; the thermal polycondensation method can be classified into a kettle heating method and a tube furnace heating method according to the different heating methods. In recent years, the tube furnace heating method has become mainstream. The tubular furnace heating method comprises a single furnace and a single kettle, a single furnace and double kettles and double furnaces and double kettles.
The single furnace and single kettle is that a heating furnace and a reaction kettle are adopted in the production process, and the raw material asphalt and the circulating asphalt after the heating furnace are mixed and enter the reaction kettle to generate polymerization reaction. Pumping out asphalt at the bottom of the kettle by a circulating pump, and returning a part of asphalt into the kettle after reheating by a heating furnace; and the other part is subjected to flash evaporation to obtain a modified asphalt product. The method has short flow, simple operation and poor product quality, so the method is rarely adopted to produce the modified asphalt in engineering practice.
The method adopts two reaction kettles and increases the flow, but the two kettles adopt cascade operation, so that the method can be simply understood that one reaction kettle with larger volume is replaced by the two reaction kettles with smaller volume, the essence still belongs to one-step reaction, and the effect of improving the product quality is limited.
The 'double-furnace double-kettle' is that two heating furnaces and two reaction kettles are adopted in the production process, the raw material medium-temperature asphalt is firstly mixed with the circulating asphalt behind the No. 1 heating furnace and then enters the No. 1 reaction kettle to carry out polymerization reaction. And (3) pumping the asphalt at the bottom of the kettle by a No. 1 circulating pump, heating one part of the asphalt by a No. 1 heating furnace and then returning the heated asphalt to the No. 1 reaction kettle, mixing the other part of the asphalt with the circulating asphalt of the No. 2 reaction kettle, then feeding the mixture into a No. 2 tubular furnace, heating and then feeding the mixture into the No. 2 reaction kettle, and further carrying out polymerization reaction. And (3) pumping out the asphalt at the bottom of the kettle by a No. 2 circulating pump, feeding one part of the asphalt into a No. 2 tube furnace for heating, returning the heated part of the asphalt into the kettle, and flashing the other part of the asphalt to obtain a modified asphalt product. The polymerization reaction in the method is carried out in two steps, the generation amount of different components in the modified asphalt product can be effectively controlled, the modified asphalt product has high quality, but the flow is long, the equipment is more, the operation is complex, the investment is high, and the occupied area is large.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a modified asphalt production system which has the advantages of short flow, simple operation, small equipment quantity, small investment, small occupied area and high product quality.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a modified asphalt production system comprises a first reaction kettle, a multi-material heating furnace and a second reaction kettle; the bottom outlet of the first reaction kettle is connected with the lower inlet of the multi-material heating furnace through a first pipeline, the upper outlet of the multi-material heating furnace is connected with the upper inlet of the first reaction kettle through a second pipeline, the medium-temperature asphalt raw material pipeline is connected with the second pipeline, and the top outlet of the first reaction kettle is connected with the noncondensable gas pipeline; an outlet at the bottom of the second reaction kettle is connected with a lower inlet of the multi-material heating furnace through a third pipeline, an upper outlet of the multi-material heating furnace is connected with an upper inlet of the second reaction kettle through a fourth pipeline, and an outlet at the top of the second reaction kettle is connected with a non-condensable gas pipeline; the third pipeline is connected with the modified asphalt product pipeline, and two ends of the intermediate product pipeline are respectively connected with the first pipeline and the third pipeline.
And a first circulating pump is arranged on the first pipeline.
And a second circulating pump is arranged on the third pipeline.
The multi-material heating furnace is provided with more than two sets of furnace tubes.
Compared with the prior art, the utility model has the beneficial effects that:
1) the method has the advantages of short flow, simple operation and capability of meeting the product quality requirement.
2) The utility model has reasonable process, less equipment and equipment investment saving.
3) The utility model has compact and reasonable equipment arrangement, small occupied area, reduced construction work amount, short construction period and saved project investment.
Drawings
FIG. 1 is a schematic diagram of the structure and process of the present invention.
In the figure: 1-a first reaction kettle; 2-a multi-material heating furnace; 3-a first circulation pump; 4-a second reaction kettle; 5-a second circulation pump; 61-a first conduit; 62-a second conduit; 63-a third conduit; 64-a fourth conduit; 65-noncondensable gas pipeline; 66-medium temperature asphalt feedstock piping; 67-modified bitumen product pipeline; 68-intermediate product conduit.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1, a modified asphalt production system comprises a first reaction kettle 1, a multi-material heating furnace 2 and a second reaction kettle 4.
An outlet at the bottom of the first reaction kettle 1 is connected with an inlet at the lower part of the multi-material heating furnace 2 through a first pipeline 61, and a first circulating pump 3 is arranged on the first pipeline 61.
The multi-material heating furnace 2 is provided with two sets of furnace tubes, and the multi-material heating furnace 2 can provide different heat loads for two materials.
An outlet at the upper part of the multi-material heating furnace 2 is connected with an inlet at the upper part of the first reaction kettle 1 through a second pipeline 62, and a medium-temperature asphalt raw material pipeline 66 is connected with the second pipeline 62.
The outlet at the top of the first reaction kettle 1 is connected with a noncondensable gas pipeline 65; the top outlet of the second reaction kettle 4 is connected with a noncondensable gas pipeline 65.
An outlet at the bottom of the second reaction kettle 4 is connected with an inlet at the lower part of the multi-material heating furnace 2 through a third pipeline 63, and a second circulating pump 5 is arranged on the third pipeline 63.
An outlet at the upper part of the multi-material heating furnace 2 is connected with an inlet at the upper part of the second reaction kettle 4 through a fourth pipeline 64, and a third pipeline 63 is connected with a modified asphalt product pipeline 67.
The intermediate product conduit 68 is connected to the first conduit 61 at its left end and to the third conduit 63 at its right end.
The process principle and the working process of the utility model are as follows:
1) the medium temperature asphalt raw material is firstly mixed with the asphalt of the second pipeline 62 at the outlet of the multi-material heating furnace through the medium temperature asphalt raw material pipeline 66, and then enters the first reaction kettle 1, and polymerization reaction is carried out in the first reaction kettle 1, so that the beta-resin is mainly generated. The asphalt at the bottom of the first reaction vessel is pumped out by the first circulating pump through the first pipeline 61, most of the asphalt is circularly heated by the multi-material heating furnace 2, and the small asphalt is sent to the second reaction vessel 4 through the intermediate product pipeline 68.
2) The modified asphalt intermediate product sent from the first circulating pump 3 through the intermediate product pipe 38 is mixed with the asphalt at the inlet of the multi-material heating furnace 2 through the third pipe 3, and then the mixture enters the multi-material heating furnace 2, and the heated mixture enters the second reaction vessel 4 through the fourth pipe 64, so that polymerization reaction occurs, and alpha-resin is mainly generated. The asphalt at the bottom of the second reaction kettle 4 is pumped out by a second circulating pump through a third pipeline 63, most of the asphalt is taken as a modified asphalt product and is sent out by a modified asphalt product pipeline 67, a modified asphalt product with the softening point of 105-115 ℃ is obtained, and a small part of the asphalt returns to the multi-material heating furnace 2 to be heated and then enters the second reaction kettle 4 for further reaction.
3) The gas flashed at the tops of the first reaction kettle 1 and the second reaction kettle 4 is collected by a non-condensable gas pipeline 65, and then is condensed and cooled to obtain non-condensable gas, and the non-condensable gas is sent out by the non-condensable gas pipeline 65. The main component of the gas is combustible oil gas, and the gas is generally discharged or burnt after being purified by oil gas cleaning equipment.
The method has the advantages of short flow, simple operation and capability of meeting the product quality requirement. The process is reasonable, the equipment quantity is small, and the equipment investment is saved. The utility model has compact and reasonable equipment arrangement, small occupied area, reduced construction work amount, short construction period and saved project investment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (4)
1. A modified asphalt production system is characterized by comprising a first reaction kettle, a multi-material heating furnace and a second reaction kettle; the bottom outlet of the first reaction kettle is connected with the lower inlet of the multi-material heating furnace through a first pipeline, the upper outlet of the multi-material heating furnace is connected with the upper inlet of the first reaction kettle through a second pipeline, the medium-temperature asphalt raw material pipeline is connected with the second pipeline, and the top outlet of the first reaction kettle is connected with the noncondensable gas pipeline; an outlet at the bottom of the second reaction kettle is connected with a lower inlet of the multi-material heating furnace through a third pipeline, an upper outlet of the multi-material heating furnace is connected with an upper inlet of the second reaction kettle through a fourth pipeline, and an outlet at the top of the second reaction kettle is connected with a non-condensable gas pipeline; the third pipeline is connected with the modified asphalt product pipeline, and two ends of the intermediate product pipeline are respectively connected with the first pipeline and the third pipeline.
2. The modified asphalt production system according to claim 1, wherein: and a first circulating pump is arranged on the first pipeline.
3. The modified asphalt production system according to claim 1, wherein: and a second circulating pump is arranged on the third pipeline.
4. The modified asphalt production system according to claim 1, wherein: the multi-material heating furnace is provided with more than two sets of furnace tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121979124.0U CN216106787U (en) | 2021-08-20 | 2021-08-20 | Modified asphalt production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121979124.0U CN216106787U (en) | 2021-08-20 | 2021-08-20 | Modified asphalt production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216106787U true CN216106787U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121979124.0U Active CN216106787U (en) | 2021-08-20 | 2021-08-20 | Modified asphalt production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216106787U (en) |
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2021
- 2021-08-20 CN CN202121979124.0U patent/CN216106787U/en active Active
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