Production process for producing modified asphalt from medium-low-temperature coal tar heavy components
A technology of low-temperature coal tar and modified asphalt, which is applied in the direction of chemically processing tar pitch/petroleum pitch/natural pitch, tar processing by distillation method, etc., to achieve the effects of controllable product quality and simple production process
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[0037] Example 1:
[0038] The medium and low temperature coal tar heavy components produced from the medium and low temperature coal tar processing process are used as raw materials. The indicators: toluene insolubles 4.4%, quinoline insolubles 1.9%, softening point 86.5°C, coking value 29.8%, ash content 0.2%, passed The asphalt pump exchanges heat to 175°C through the asphalt heat exchanger, mixed with the asphalt from the asphalt circulation pump, enters the modified asphalt heating furnace and is heated to 400°C, and then enters the modified asphalt reactor for modification. Part of the light oil is flashed into the flash oil condenser to be condensed and then enters the heavy oil intermediate tank. After the modified asphalt is partly recycled, part is produced, and the produced part enters the vacuum flash evaporator, and the heavy oil is removed at a vacuum of 85kPa. Product modified asphalt. The vacuum flash vapor is condensed by the heavy oil condenser, enters the heav...
Example Embodiment
[0040] Example 2:
[0041] The medium and low temperature coal tar heavy components produced from the medium and low temperature coal tar processing process are used as raw materials. The indicators: toluene insolubles 5.3%, quinoline insolubles 2.4%, softening point 90℃, coking value 32.5%, ash content 0.2%, passed The asphalt pump exchanges heat to 170°C through the asphalt heat exchanger, and is mixed with the asphalt from the asphalt circulation pump into the modified asphalt heating furnace to be heated to 390°C, and then enters the modified asphalt reactor for modification. Part of the light oil is flashed into the flash oil condenser to be condensed and then enters the heavy oil intermediate tank. After the modified asphalt is partly recycled, part is produced, and the produced part enters the vacuum flash evaporator, and the heavy oil is removed at a vacuum of 85kPa. Product modified asphalt. The vacuum flash vapor is condensed by the heavy oil condenser, enters the heav...
Example Embodiment
[0043] Example 3:
[0044] The medium and low temperature coal tar heavy components produced from the medium and low temperature coal tar processing process are used as raw materials. The indicators: 4.1% toluene insolubles, 1.6% quinoline insolubles, softening point 85.5°C, coking value 26.8%, and ash content 0.2%. The asphalt pump exchanges heat to 175°C through the asphalt heat exchanger, mixed with the asphalt from the asphalt circulation pump, enters the modified asphalt heating furnace and is heated to 400°C, and then enters the modified asphalt reactor for modification. Part of the light oil is flashed into the flash oil condenser to be condensed and then enters the heavy oil intermediate tank. After the modified asphalt is partly recycled, part is produced, and the produced part enters the vacuum flash evaporator, and the heavy oil is removed at a vacuum of 85kPa. Product modified asphalt. The vacuum flash vapor is condensed by the heavy oil condenser, enters the heavy o...
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