Preparation method of high softening point asphalt, prepared high softening point asphalt and binder prepared by using high softening point asphalt
A high softening point asphalt and binder technology, which is applied in the direction of melting and processing tar asphalt/petroleum asphalt/natural asphalt, chemical processing of tar asphalt/petroleum asphalt/natural asphalt, asphalt material adhesives, etc., can solve the problem of heat Problems such as unevenness, poor thermal conductivity, and uncontrollable softening point of the product can achieve the effect of stable quality indicators
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Embodiment 1
[0035] The preparation method of high softening point asphalt, the step comprises:
[0036] S1. Import the modified pitch into the monomer container 1, and pass an inert gas into the monomer container 1. The inert gas is nitrogen, and the heating temperature of the four-stage electric heater 3 is sequentially adjusted from top to bottom to 253°C, 257°C, 259°C and 260°C, and turn on the heating to keep the pressure in the monomer container 1 at 0.03MPa;
[0037] S2. After the modified asphalt is heated to 250° C., the temperature is maintained for 13 hours to obtain the high softening point asphalt.
[0038] Finally, the softening point of the high softening point pitch prepared in this example is 250°C, the fixed carbon content is 81%wt, and the ash content is 0.5%wt.
[0039] Utilize this high softening point pitch as raw material to prepare binding agent, after measuring, the softening point of described binding agent is 250 ℃, and fixed carbon content is 80%wt, and ash con...
Embodiment 2
[0041] The preparation method of high softening point asphalt, the step comprises:
[0042] S1. Import the modified asphalt into the monomer container 1, and pass an inert gas into the monomer container 1. The inert gas is nitrogen, and the heating temperature of the four-stage electric heater 3 is adjusted to 354°C from top to bottom. , 355°C, 356°C and 358°C, and turn on the heating to keep the pressure in the monomer container 1 at 0.04MPa;
[0043]S2. After the modified asphalt is heated to 350° C., the temperature is maintained to continue the reaction for 16 hours to obtain the high softening point asphalt.
[0044] Finally, the softening point of the high softening point pitch prepared in this example is 350°C, the fixed carbon content is 87%wt, and the ash content is 0.45%wt.
[0045] Using the high softening point pitch as raw material to prepare a binder, the softening point of the binder is determined to be 350°C, the fixed carbon content is 86%wt, and the ash cont...
Embodiment 3
[0047] The preparation method of high softening point asphalt, the step comprises:
[0048] S1. Import the modified asphalt into the monomer container 1, and pass an inert gas into the monomer container 1. The inert gas is nitrogen, and the heating temperature of the four-stage electric heater 3 is adjusted to 375°C from top to bottom. , 376°C, 378°C and 382°C, and turn on the heating to keep the pressure in the monomer container 1 at 0.05MPa;
[0049] S2. After the modified asphalt is heated to 370° C., the temperature is maintained for 18 hours to obtain the high softening point asphalt.
[0050] Finally, the softening point of the high softening point pitch prepared in this example is 370°C, the fixed carbon content is 89%wt, and the ash content is 0.42%wt.
[0051] A binder was prepared using the high softening point pitch as a raw material. After measurement, the softening point of the binder was 250°C, the fixed carbon content was 88%wt, and the ash content was 0.42%wt....
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