Efficient feeding temperature control system of modified asphalt development tank

Abstract

The utility model relates to the technical field of modified asphalt production, in particular to an efficient feeding temperature control system of a modified asphalt development tank. The efficient feeding temperature control system of the modified asphalt development tank comprises a material mixing tank, the material mixing tank is connected with a colloid mill through a premixing swelling kettle, the colloid mill is connected with the development tank through a secondary premixing kettle, a spiral feeder is arranged on the secondary premixing kettle, a premixing swelling kettle coil pipe is arranged in the premixing swelling kettle, and the spiral feeder is connected with the colloid mill. The premixing swelling kettle coil pipe is connected with a heat exchange tank through a pipeline, and the heat exchange tank is connected with a low-temperature heat conduction oil temporary storage tank through a pipeline. By means of collaborative operation of the heat exchange tank, the low-temperature heat conduction oil temporary storage tank and related pipelines, heat conduction oil led out of a coil pipe of the premixing swelling kettle is used for heating water in the heat exchange tank, and warm water heats raw materials in the mixing tank, so that the feeding temperature is greatly increased. The fusion speed of the asphalt and the modifier is accelerated, the production period is effectively shortened, the production efficiency is improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to modified asphalt production technical field, concretely is modified asphalt development jar high -efficient feeding temperature control system. BACKGROUND

[0002] Modified asphalt is a kind of road building material with excellent performance, by adding specific modifier in ordinary asphalt, through special process, with outstanding high and low temperature stability, anti-aging and anti-rutting ability, is widely used in modern road construction field.

[0003] The existing anticorrosion modified asphalt production device has many problems. First, the low temperature of modifier feeding is a big problem. Low temperature feeding causes the slow fusion of asphalt and modifier, greatly prolongs the production cycle, reduces the production efficiency, increases the production cost and affects the economic benefit of enterprises. Secondly, when adding powder stabilizer, the mixing effect of the existing device is not satisfactory. Usually, the stabilizer is directly added to the premixing swelling kettle. Due to the lack of reasonable dispersion means, the stabilizer is easy to float on the upper asphalt, and it is difficult to disperse uniformly, which seriously affects the stability and uniformity of the quality of modified asphalt, resulting in uneven product performance. Finally, the existing development tank asphalt cooling method is unreasonable. Direct cooling with water, the cooling process is too violent, which is easy to produce temperature stress in the asphalt, destroy the microstructure of the asphalt, and further reduce the product quality, which cannot meet the needs of high standard road construction. CONTENT OF THE UTILITY MODEL

[0004] According to the above deficiencies in the prior art, the utility model aims at providing a modified asphalt development tank high-efficiency feeding temperature control system, which utilizes the heat-conducting oil discharged by the premixing swelling kettle coil to heat the water in the heat exchange tank, and then the warm water is used to heat the raw materials in the mixing tank, so that the feeding temperature is greatly increased. This accelerates the fusion speed of asphalt and modifier, effectively shortens the production cycle, improves the production efficiency and reduces the production cost.

[0005] The utility model is implemented by the following technical solutions:

[0006] The modified asphalt development tank high-efficiency feeding temperature control system comprises a mixing tank, the mixing tank is connected with a colloid mill through a premixing swelling kettle, the colloid mill is connected with a development tank through a secondary premixing kettle, a spiral feeder is arranged on the secondary premixing kettle, a premixing swelling kettle coil is arranged in the premixing swelling kettle, the premixing swelling kettle coil is connected with a heat exchange tank through a pipeline, and the heat exchange tank is connected with a low-temperature heat-conducting oil temporary storage tank through a pipeline.

[0007] The inclined guide plate guides the dispersion of materials, the stirring paddle realizes the preliminary mixing of materials, the spiral feeder accurately adds the powder stabilizer, the temperature control sleeve utilizes the warm water to heat the materials, promotes the preliminary fusion of materials and provides a good material basis for subsequent processes.

[0008] The inside of the mixing tank is provided with a stirring paddle driven by a stirring motor, and the upper portion of the stirring paddle is provided with an inclined guide plate.

[0009] The upper portion of the mixing tank is provided with an SBS feeding port and an SBR feeding port, the lower portion of each of the SBS feeding port and the SBR feeding port is provided with an inclined guide plate, and the outer side of the mixing tank is provided with a temperature control sleeve.

[0010] The mixing tank and the premixing swelling kettle are connected through an elevator, the inside of the development tank is provided with a development tank coil pipe, and the development tank coil pipe is connected with a heat conducting oil inlet pipeline.

[0011] The inside of the heat exchange tank is provided with a heat exchange tank coil pipe, the upper portion of the heat exchange tank is provided with a heat exchange tank inlet, and the heat exchange tank is connected with the temperature control sleeve through a temperature rising water pipeline.

[0012] The low-temperature heat conducting oil temporary storage tank is connected with the heat conducting oil inlet pipeline through an outlet pump, a low-position outlet pipeline is connected between the low-temperature heat conducting oil temporary storage tank and the outlet pump, and the low-temperature heat conducting oil temporary storage tank is connected with the low-position outlet pipeline through a high-position outlet pipeline.

[0013] The connection between the low-position outlet pipeline and the low-temperature heat conducting oil temporary storage tank is located at the bottom of the low-temperature heat conducting oil temporary storage tank, and the connection between the high-position outlet pipeline and the low-temperature heat conducting oil temporary storage tank is located at 1 / 2-2 / 3 of the vertical wall of the low-temperature heat conducting oil temporary storage tank. According to different cooling requirements, the conveying mode and speed of the heat conducting oil can be flexibly adjusted, so that the development tank can realize effective cooling in normal and emergency situations.

[0014] The premixing swelling kettle coil pipe is connected with the heat exchange tank coil pipe through a pipeline, and the heat exchange tank coil pipe is connected with the low-temperature heat conducting oil temporary storage tank through a pipeline.

[0015] The premixing swelling kettle coil pipe in the premixing swelling kettle is connected with the heat exchange tank and the low-temperature heat conducting oil temporary storage tank. The premixing swelling kettle coil pipe is heated by heat conducting oil to provide a reaction temperature of 160-180 DEG C for the material, so that the modifier is fully swollen and the modification effect is enhanced. Meanwhile, the heat conducting oil exported by the premixing swelling kettle coil pipe is used for heating the water in the heat exchange tank, so that the energy is recycled.

[0016] The working principle of the utility model is as follows:

[0017] The mixing stage: SBS and SBR enter the mixing tank from the SBS feeding port and the SBR feeding port respectively, and are dispersed and fallen by the inclined guide plate. At the same time, the stirring paddle is started to stir at a speed of 50-100 r / min. At this time, the heat conducting oil in the premixing swelling kettle coil pipe flows into the heat exchange tank to heat the water in the heat exchange tank, the heated water enters the temperature control sleeve outside the mixing tank through the temperature rising water pipeline, the temperature in the mixing tank is controlled at 60-80 DEG C, the material is preliminarily fused, and the mixing time is controlled at 15-30 minutes.

[0018] Premixing and swelling stage: the preliminary mixed material in the mixing tank is transported to the premixing and swelling kettle by the elevator. The premixing and swelling kettle coil in the premixing and swelling kettle continuously introduces the heat conducting oil from the low temperature heat conducting oil temporary storage tank, so that the temperature in the premixing and swelling kettle is maintained at 160-180 DEG C. The material is subjected to premixing and swelling reaction at the temperature for 1-2 hours, so that the modifier is fully swollen, and preparation is made for subsequent reaction.

[0019] Grinding and dispersing stage: the material after premixing and swelling enters the colloid mill. The grinding gap of the colloid mill is adjusted to 0.1-0.5 mm. The material is subjected to grinding and dispersing for 15-30 minutes, so that the modifier is further refined and uniformly dispersed in the asphalt, and the microstructure of the modified asphalt is improved.

[0020] Second premixing stage: the material from the colloid mill enters the second premixing kettle. Other additives that may be needed are added by the screw feeder. The stirring device in the second premixing kettle stirs the material at a speed of 30-60 revolutions per minute for 30-60 minutes, so as to ensure uniform distribution of various components and further improve the quality stability of the modified asphalt.

[0021] Development stage: the material after second premixing enters the development tank. The heat conducting oil heats and controls the temperature of the material through the development tank coil. The temperature in the development tank is controlled at 170-190 DEG C. The material is developed at the temperature for 1-3 hours, so as to optimize the performance of the modified asphalt.

[0022] Cooling stage: after development is completed, under normal circumstances, the heat conducting oil in the low temperature heat conducting oil temporary storage tank is transported to the heat conducting oil inlet pipeline through the high liquid outlet pipeline and the liquid outlet pump, and then the heat of the asphalt in the development tank is taken away through the development tank coil, so as to realize gentle cooling. In case of emergency, the low liquid outlet pipeline is started, and the power of the liquid outlet pump is increased, so as to accelerate the heat conducting oil conveying speed, rapidly reduce the asphalt temperature in the development tank, and according to the actual production requirement, the asphalt temperature is reduced to the discharge temperature of 120-150 DEG C.

[0023] Compared with the prior art, the utility model has the advantages that:

[0024] (1) With the cooperation of the heat exchange tank, the low temperature heat conducting oil temporary storage tank and the related pipeline, the heat conducting oil led out by the premixing and swelling kettle coil is used to heat the water in the heat exchange tank. The warm water is used to warm the raw materials in the mixing tank, so that the feeding temperature is greatly increased. This accelerates the fusion speed of the asphalt and the modifier, effectively shortens the production cycle, improves the production efficiency, reduces the production cost, and enhances the market competitiveness of enterprises.

[0025] (2) The powdery stabilizer is added from the screw feeder, the stabilizer is added while feeding, the problem that the stabilizer is floated on the upper layer in the asphalt is effectively avoided, the uniform dispersion of the stabilizer is ensured, the stability and consistency of the quality of the modified asphalt are improved, and the strict requirements of road construction on product performance are met.

[0026] (3) The development tank adopts heat conducting oil for temperature control, under normal circumstances, low-temperature heat conducting oil is transported by the high-position liquid outlet pipeline to cool the development tank, and under emergency circumstances, the heat conducting oil is transported by the low-position liquid outlet pipeline to cool the development tank by increasing the power of the liquid outlet pump. The cooling mode is gentle and controllable, damage to the structure of the asphalt caused by rapid cooling is avoided, and the product quality of the modified asphalt is effectively ensured. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structure diagram of the efficient feeding and temperature control system of the modified asphalt development tank of the utility model.

[0028] In the figure: 1, the mixing tank; 2, the premixing swelling kettle; 3, the colloid mill; 4, the secondary premixing kettle; 5, the development tank; 6, the heat exchange tank; 7, the low-temperature heat conducting oil temporary storage tank; 8, the SBS feeding port; 9, the SBR feeding port; 10, the inclined guide plate; 11, the stirring paddle; 12, the elevator; 13, the temperature control sleeve; 14, the premixing swelling kettle coil pipe; 15, the screw feeder; 16, the development tank coil pipe; 17, the heat conducting oil inlet pipeline; 18, the heat exchange tank coil pipe; 19, the high-position liquid outlet pipeline; 20, the low-position liquid outlet pipeline; 21, the liquid outlet pump; 22, the heating water pipeline; 23, the heat exchange tank inlet. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme of the utility model more clearly, in the following, the utility model is further explained in detail in combination with the drawings.

[0030] Example 1

[0031] As Figure 1The modified asphalt development tank high-efficiency feeding temperature control system is shown, including a mixing tank 1, the mixing tank 1 is connected with a colloidal mill 3 through a premixing swelling kettle 2, the colloidal mill 3 is connected with a development tank 5 through a secondary premixing kettle 4, a spiral feeder 15 is arranged on the secondary premixing kettle 4, a premixing swelling kettle coil pipe 14 is arranged in the premixing swelling kettle 2, the premixing swelling kettle coil pipe 14 is connected with a heat exchange tank 6 through a pipeline, and the heat exchange tank 6 is connected with a low-temperature heat conducting oil temporary storage tank 7 through a pipeline. A stirring paddle 11 driven by a stirring motor is arranged in the mixing tank 1, and an inclined guide plate 10 is arranged above the stirring paddle 11. An SBS feeding port 8 and an SBR feeding port 9 are arranged above the mixing tank 1, and the inclined guide plates 10 are arranged below the SBS feeding port 8 and the SBR feeding port 9, and a temperature control sleeve 13 is arranged on the outside of the mixing tank 1. A hoist 12 is arranged between the mixing tank 1 and the premixing swelling kettle 2, a development tank coil pipe 16 is arranged in the development tank 5, and a heat conducting oil inlet pipeline 17 is connected to the development tank coil pipe 16. A heat exchange tank coil pipe 18 is arranged in the heat exchange tank 6, a heat exchange tank inlet 23 is arranged above the heat exchange tank 6, and the heat exchange tank 6 is connected with the temperature control sleeve 13 through a temperature rising water pipeline 22. The heat exchange tank 6 is connected with the premixing swelling kettle coil pipe 14, the low-temperature heat conducting oil temporary storage tank 7 and the temperature control sleeve 13 of the mixing tank 1 through pipelines. The heat exchange tank 6 uses the heat conducting oil led out by the premixing swelling kettle coil pipe 14 to heat the water in the heat exchange tank 6, provides a temperature rising heat source for the mixing tank 1, simultaneously realizes temperature reduction and recovery of the heat conducting oil, stores the heat conducting oil to the low-temperature heat conducting oil temporary storage tank 7 and improves energy utilization efficiency. The low-temperature heat conducting oil temporary storage tank 7 is connected with the heat conducting oil inlet pipeline 17 through a liquid outlet pump 21, a low-position liquid outlet pipeline 20 is connected between the low-temperature heat conducting oil temporary storage tank 7 and the liquid outlet pump 21, and the low-temperature heat conducting oil temporary storage tank 7 is connected with the low-position liquid outlet pipeline 20 through a high-position liquid outlet pipeline 19. The connection position of the low-position liquid outlet pipeline 20 and the low-temperature heat conducting oil temporary storage tank 7 is located at the bottom of the low-temperature heat conducting oil temporary storage tank 7, and the connection position of the high-position liquid outlet pipeline 19 and the low-temperature heat conducting oil temporary storage tank 7 is located at 2 / 3 of the vertical wall of the low-temperature heat conducting oil temporary storage tank 7. The premixing swelling kettle coil pipe 14 is connected with the heat exchange tank coil pipe 18 through a pipeline, and the heat exchange tank coil pipe 18 is connected with the low-temperature heat conducting oil temporary storage tank 7 through a pipeline.

[0032] The modified asphalt development tank high-efficiency feeding temperature control system works, and the following steps are included:

[0033] (1) SBS and SBR enter the mixing tank 1 from the SBS feed port 8 and the SBR feed port 9 respectively, and are dispersed and fallen by means of the inclined guide plate 10. At the same time, the stirring paddle 11 is started to stir at a speed of 50-100 revolutions per minute. At this time, the heat conduction oil in the pre-mixing swelling kettle coil pipe 14 flows into the heat exchange tank 6 to heat the water in the heat exchange tank, and the heated water enters the temperature control sleeve 13 outside the mixing tank 1 through the heating water pipeline 22 to control the temperature in the mixing tank at 60-80℃, promoting the preliminary fusion of the materials, and the mixing time is controlled at 15-30 minutes. The preliminarily mixed materials in the mixing tank 1 are transported to the pre-mixing swelling kettle 2 by means of the elevator 12. The pre-mixing swelling kettle coil pipe 14 in the pre-mixing swelling kettle 2 continuously inputs the heat conduction oil from the low-temperature heat conduction oil temporary storage tank 7 to maintain the temperature in the pre-mixing swelling kettle 2 at 160-180℃, and the materials are subjected to pre-mixing swelling reaction at this temperature for 1-2 hours to make the modifier swell sufficiently and prepare for the subsequent reaction.(2) The pre-mixing swelling materials enter the colloid mill 3, and the grinding gap of the colloid mill 3 is adjusted to 0.1-0.5 millimeters to grind and disperse the materials for 15-30 minutes, so that the modifier is further refined and uniformly dispersed in the asphalt, and the microstructure of the modified asphalt is improved. The materials from the colloid mill 3 enter the secondary pre-mixing kettle 4, and the spiral feeder 15 is used to add other additives that may be needed. The stirring device in the secondary pre-mixing kettle 4 stirs the materials at a speed of 30-60 revolutions per minute for 30-60 minutes to ensure uniform distribution of various components and further improve the quality stability of the modified asphalt. The secondarily pre-mixed materials enter the development tank 5, and the heat conduction oil heats and controls the temperature of the materials through the development tank coil pipe 16 to control the temperature in the development tank 5 at 170-190℃, and the materials are developed at this temperature for 1-3 hours to optimize the performance of the modified asphalt.(3) After the development is completed, under normal circumstances, the heat conduction oil in the low-temperature heat conduction oil temporary storage tank 7 is transported to the heat conduction oil inlet pipeline 17 through the high-level liquid outlet pipeline 19 and the liquid outlet pump 21, and then the heat conduction oil takes away the heat of the asphalt in the development tank 5 through the development tank coil pipe 16 to realize gentle cooling. If an emergency occurs, the low-level liquid outlet pipeline 20 is started, and the power of the liquid outlet pump 21 is increased to speed up the heat conduction oil delivery speed, rapidly reduce the temperature of the asphalt in the development tank, and according to the actual production requirements, the temperature of the asphalt is reduced to the discharge temperature of 120-150℃.

Claims

1. A modified asphalt development tank high-efficiency feeding temperature control system, characterized in that, Including mixing tank (1), mixing tank (1) is connected with colloid mill (3) through premixing swelling kettle (2), colloid mill (3) is connected with development tank (5) through secondary premixing kettle (4), screw feeder (15) is arranged on secondary premixing kettle (4), premixing swelling kettle coil pipe (14) is arranged in premixing swelling kettle (2), premixing swelling kettle coil pipe (14) is connected with heat exchange tank (6) through pipeline, heat exchange tank (6) is connected with low-temperature heat conducting oil temporary storage tank (7) through pipeline.

2. The modified bitumen development tank efficient feeding temperature control system according to claim 1, characterized in that, The inside of the mixing tank (1) is provided with a stirring paddle (11) driven by a stirring motor, and the upper part of the stirring paddle (11) is provided with an inclined guide plate (10).

3. The modified bitumen development tank efficient feeding temperature control system according to claim 2, characterized in that, The upper part of the mixing tank (1) is provided with an SBS feed inlet (8) and an SBR feed inlet (9), and the lower part of the SBS feed inlet (8) and the SBR feed inlet (9) is provided with an inclined guide plate (10), and the outer side of the mixing tank (1) is provided with a temperature control sleeve (13).

4. The modified bitumen development tank efficient feeding temperature control system according to claim 1, characterized in that, The mixing tank (1) and the premixing swelling kettle (2) are provided with an elevator (12), and the inside of the development tank (5) is provided with a development tank coil pipe (16), and the development tank coil pipe (16) is connected with a heat conducting oil inlet pipeline (17).

5. The modified bitumen development tank efficient feeding temperature control system according to claim 3, characterized in that, The inside of the heat exchange tank (6) is provided with a heat exchange tank coil pipe (18), and the upper part of the heat exchange tank (6) is provided with a heat exchange tank inlet (23), and the heat exchange tank (6) is connected with the temperature control sleeve (13) through the heating water pipeline (22).

6. The modified bitumen development tank efficient feeding temperature control system according to claim 4, characterized in that, The low-temperature heat conducting oil temporary storage tank (7) is connected with the heat conducting oil inlet pipeline (17) through the liquid outlet pump (21), and the low-temperature heat conducting oil temporary storage tank (7) and the liquid outlet pump (21) are connected with a low-level liquid outlet pipeline (20), and the low-temperature heat conducting oil temporary storage tank (7) is connected with the low-level liquid outlet pipeline (20) through the high-level liquid outlet pipeline (19).

7. The modified bitumen development tank efficient feeding temperature control system according to claim 6, characterized in that, The connection between the low-level liquid outlet pipeline (20) and the low-temperature heat conducting oil temporary storage tank (7) is located at the bottom of the low-temperature heat conducting oil temporary storage tank (7), and the connection between the high-level liquid outlet pipeline (19) and the low-temperature heat conducting oil temporary storage tank (7) is located at 1 / 2-2 / 3 of the vertical wall of the low-temperature heat conducting oil temporary storage tank (7).

8. The modified bitumen development tank efficient feeding temperature control system according to claim 5, characterized in that, The premixing swelling kettle coil pipe (14) is connected with the heat exchange tank coil pipe (18) through the pipeline, and the heat exchange tank coil pipe (18) is connected with the low-temperature heat conducting oil temporary storage tank (7) through the pipeline.

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