A kind of road asphalt prepared from coal tar and preparation method thereof
A technology for road asphalt and coal tar pitch, applied in the field of road asphalt and its production technology, can solve the problems of high raw material transportation cost and production cost, high production cost and raw material transportation cost, and difficulty in matching the output of coal tar pitch, so as to achieve anti-aging of products. High performance, improved anti-aging properties, easy to scale production
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Embodiment 1
[0027] Add 70 parts of coal tar pitch 1 into the reactor, and raise the temperature in the reactor to 100°C to soften the coal tar pitch; then add 3 parts of waste rubber powder, 30 parts of coking solvent naphtha, 1.25 parts of 2,2,4-trimethyl -1,2-dihydroquinoline polymer, and the temperature in the reactor was raised to 200°C and mixed for 1.5h.
[0028] The quality index of the prepared road polymer modified coal tar pitch is as follows:
[0029]
[0030] The coking solvent oil used in this example is anthracene oil 1, and the distillate before 400°C accounts for 92.2%.
Embodiment 2
[0032] Add 60 parts of coal tar pitch 1 into the reactor, and raise the temperature in the reactor to 100°C to soften the coal tar pitch; then add 3 parts of waste rubber powder, 2.5 parts of N-phenyl-N'-isopropyl-terephthal Amine, 30 parts of coking mineral spirits and 10 parts of high boiling point low vapor pressure oil and the temperature inside the reactor was raised to 220°C and mixed for 1.5h.
[0033] The quality index of the prepared road polymer modified coal tar pitch is as follows:
[0034]
[0035] The coking solvent oil used in this example is anthracene oil 1, and the distillate before 400°C accounts for 92.2%.
[0036] The high boiling point and low vapor pressure oil used in this example has an initial boiling point of 303° C. and a saturated vapor pressure of 3.5 Pa at 100° C.; the high boiling point and low vapor pressure oil is waste tire oil.
Embodiment 3
[0038] Add 60 parts of coal tar pitch 1 into the reactor, and raise the temperature in the reactor to 100°C to soften the coal tar pitch; then add 3 parts of waste rubber powder, 1.25 parts of 2,2,4-trimethyl-1,2-di Hydrogenated quinoline polymer, 1.25 parts of N-phenyl-N'-isopropyl-p-phenylenediamine, 20 parts of coking solvent oil and 20 parts of high boiling point and low vapor pressure oil and the temperature in the reactor is raised to 220°C After mixing for 2 hours; finally, the temperature in the reactor was lowered to 100°C and kept constant, and 1.25 parts of high boiling point and low vapor pressure oil was added and mixed for 0.5 hours.
[0039] The quality index of the prepared road polymer modified coal tar pitch is as follows:
[0040]
[0041] The coking solvent oil used in this example is anthracene oil 2, and the distillate before 400°C accounts for 96.4%.
[0042] The high boiling point and low vapor pressure oil used in this example has an initial boilin...
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