Polymerization tower for producing modified asphalt

Abstract

The utility model relates to a polymerization tower, in particular to a polymerization tower for producing modified asphalt, which comprises an exhaust hole, an external heater, a feed port, a tray and a liquid outlet, and the exhaust hole, the feed port, the tray and the liquid outlet are vertically sleeved in the polymerization tower. The polymerization tower realizes uniform temperature of materials, the polymerization time of the materials in the tower is basically consistent, and the problem that part of materials are over-polymerized due to non-uniform temperature field of a conventional polymerization kettle and a flowing dead zone of equipment is solved.

Description

Technical Field

[0001] This utility model relates to a polymerization tower, and more particularly to a polymerization tower for the production of modified asphalt. Background Technology

[0002] Asphalt, as an important basic material, is widely used in various fields such as road construction and building waterproofing. With economic development and technological progress, the quality requirements for asphalt products are becoming increasingly stringent, and traditional modification technologies are no longer sufficient to meet the needs of modern industry.

[0003] Currently, the most commonly used asphalt modification technologies on the market mainly include batch modification using conventional polymerization reactors. While this method can improve asphalt quality to some extent, it still has the following shortcomings in actual production:

[0004] Uneven temperature field: Due to the uneven temperature distribution inside the polymerization reactor, some materials may over-polymerize, affecting the quality of the final product.

[0005] Long production cycle: The intermittent operation mode makes the entire production process time-consuming, which is not conducive to large-scale continuous production.

[0006] High energy consumption: Intermittent production requires frequent start-ups and shutdowns, resulting in energy waste.

[0007] Unable to achieve continuous production: Intermittent production modes limit the scale of industrial applications.

[0008] Although some improved modification technologies exist on the market, most literature still focuses on how to optimize existing batch polymerization reactors, and an ideal solution has not yet been found. Utility Model Content

[0009] To address the aforementioned issues, this invention proposes a polymerization tower for modified asphalt production. This tower achieves uniform material temperature and consistent polymerization time within the tower, overcoming the problem of overpolymerization caused by uneven temperature field and dead zones in conventional polymerization reactors. The details are as follows.

[0010] A polymerization tower for producing modified asphalt includes an exhaust port, a heat treatment section, a feed inlet, and a material collection section. The heat treatment section includes an external heater and an atomizer. The external heater is installed on the outer wall of the polymerization tower. The exhaust port, atomizer, and feed inlet are located above the liquid surface and are fitted together inside the polymerization tower.

[0011] The material collection section includes a liquid collection section, a tray, and a drain outlet. The trays are paired and have different shapes. The liquid collection section, the tray, and the drain outlet are all located below the liquid surface and are fitted together inside the polymerization tower. The liquid collection section pumps the collected material to the atomizer.

[0012] Preferably, the atomizer is a ring-shaped eccentric combined atomizing nozzle. The liquid is sprayed through the eccentric nozzle and flows down the tower wall, which increases the contact area between the material and the tower wall and enhances the heat exchange efficiency.

[0013] Preferably, the liquid collecting section is an annular liquid collecting port, which can minimize the material deviation inside the tower.

[0014] The polymerization tower for asphalt modification described above also includes a demister, which is installed between the exhaust port and the atomizer. The demister can minimize the asphalt droplets entrained in the flue gas during the vacuum exhaust process.

[0015] The polymerization tower for asphalt modification described above also includes an umbrella-shaped distributor installed below the feed inlet. This arrangement ensures uniform mixing of the feed and circulating liquid, and the material flows down the tower wall and the narrow slit of the umbrella-shaped distributor, which improves the heat exchange effect.

[0016] As described above, in the polymerization tower for asphalt modification, the external heater is located below the liquid surface, resulting in higher heating efficiency. The heating temperature range of the external heater is 340℃~420℃, preferably 370℃~420℃.

[0017] As described above, the polymerization tower for asphalt modification has 1 to 6 pairs of trays, preferably 4 pairs. The trays allow the material to fall evenly, ensuring that the polymerization time of the material is basically consistent.

[0018] The asphalt modification polymerization tower described above uses vacuum exhaust for its venting.

[0019] As described above, the polymerization tower for asphalt modification can be connected in multiple stages in series.

[0020] This utility model has the following beneficial effects:

[0021] (1) Temperature field uniformity: Through the design of the annular eccentric combination atomizing nozzle and multi-layer tray, the material is uniformly distributed in the tower, ensuring the consistency of the temperature field and effectively avoiding the occurrence of local over-aggregation.

[0022] (2) Improved production efficiency: The adoption of continuous production methods has greatly shortened the production cycle and improved production efficiency;

[0023] (3) Reduced energy consumption: The optimized heat utilization design, combined with electric heat tracing or molten salt heating, effectively reduces energy consumption;

[0024] (4) Continuous production realization: The equipment structure and control strategy have been improved, realizing the continuous production of asphalt modification and meeting the needs of large-scale industrial applications;

[0025] (5) Improved product quality: Through optimized process parameter control, key performance indicators of asphalt products such as softening point, toluene insoluble matter, quinoline insoluble matter, coking value and volatile matter have been significantly improved;

[0026] (6) Easy equipment maintenance: The equipment is designed to be easy to maintain and repair, reducing maintenance costs and downtime;

[0027] (7) Environmental performance: The design of the top demister reduces the problem of asphalt droplets being carried by the flue gas, which helps to reduce environmental pollution. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the polymerization tower of this utility model. Detailed Implementation

[0029] The following detailed description is provided in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figure 1 As shown, this utility model provides a polymerization tower for modified asphalt production, including an exhaust port 1, a heat treatment section, a feed inlet 4, and a material collection section.

[0031] The heat treatment section includes an external heater 7 and an atomizer 3. The external heater 7 is installed on the outer wall of the polymerization tower. The exhaust port 1, the atomizer 3, and the feed inlet 4 are located above the liquid level 6 and are fitted together inside the polymerization tower.

[0032] The material collection section includes a liquid collection section, a circulation section, a tray 9, and a drain port 10. The trays 9 are paired trays with different shapes. The liquid collection section 8, the trays 9, and the drain port 10 are all located below the liquid level 6 and are fitted together inside the polymerization tower. The liquid collection section 8 pumps the collected material to the atomizer 3.

[0033] Preferably, the atomizer 3 is an annular eccentric combined atomizing nozzle, which increases the contact area between the material and the tower wall and enhances the heat exchange efficiency.

[0034] Preferably, the liquid collection section 8 is an annular liquid collection port, which can minimize the material deviation in the tower.

[0035] The polymerization tower for asphalt modification as described above also includes a demister 2, which is installed between the exhaust port 1 and the atomizer 3. The demister 2 can minimize the asphalt droplets entrained in the flue gas during the vacuum exhaust process.

[0036] The asphalt modification polymerization tower described above also includes an umbrella-shaped distributor 5, which is installed below the feed inlet 4. This arrangement allows the feed and circulating liquid to mix evenly, and the material flows down the tower wall and the narrow slit of the umbrella-shaped distributor 5, which can improve the heat exchange effect.

[0037] As described above, in the polymerization tower for asphalt modification, the external heater 7 is located below the liquid level 6, resulting in higher heating efficiency. The heating temperature range of the external heater 7 is 340℃~420℃, preferably 370℃~420℃.

[0038] As described above, the polymerization tower for asphalt modification has 1 to 6 pairs of trays 9, preferably 4 pairs. The trays 9 can make the material fall evenly and ensure that the polymerization time of the material is basically consistent.

[0039] The asphalt modification polymerization tower described above uses vacuum exhaust for exhaust port 1.

[0040] As described above, the polymerization tower for asphalt modification can be connected in multiple stages in series.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0042] While the specific embodiments of this utility model have been described above, they are not intended to limit the scope of protection of this utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of this utility model are still within the scope of protection of this utility model.

Claims

1. A polymerization tower for producing modified asphalt, characterized in that, It includes an exhaust port (1), a heat treatment section, a feed inlet (4), and a material collection section. The heat treatment section is an external heater (7), which is installed on the outer wall of the polymerization tower. The vent (1) and inlet (4) are located above the liquid surface (6) and are fitted inside the polymerization tower, one above the other. The material collection section includes a tray (9) and a drain port (10). Both the tray (9) and the drain port (10) are located below the liquid level (6) and are fitted inside the polymerization tower.

2. The polymerization tower for modified asphalt production as described in claim 1, characterized in that, It also includes a demister (2), which is installed below the exhaust port (1).

3. The polymerization tower for modified asphalt production as described in claim 1, characterized in that, It also includes an umbrella-shaped fabric feeder (5), which is installed below the feed inlet (4).

4. The polymerization tower for modified asphalt production as described in claim 1, characterized in that, The external heater (7) is positioned below the liquid level (6), and the heating temperature range of the external heater (7) is 340℃~420℃.

5. The polymerization tower for modified asphalt production as described in claim 1, characterized in that, The trays (9) are in pairs and have different shapes, with 1 to 6 pairs.

6. The polymerization tower for modified asphalt production as described in claim 1, characterized in that, The exhaust port (1) is a vacuum exhaust port.

7. The polymerization tower for modified asphalt production as described in claim 1, characterized in that, Multiple stages can be connected in series.

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