Foreign modified asphalt processes

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The medium-temperature asphalt obtained from tar distillation enters the mixer in the outlet pipeline of the 1# asphalt circulation pump, where it mixes with the asphalt coming from the bottom of the 1# reactor. This mixture then enters the heating furnace of the 1# reactor, where a certain amount of β-resin is produced. A portion of the asphalt exiting the heating furnace, along with the oil vapor from the top of the reactor, enters the 1# stripping tower. There, the asphalt is stripped of its oils using superheated steam from the 2# stripping tower. The asphalt obtained at the top of the tower is cooled by the 1# steam generator and cooler, and then separated from water in an oil-water separator before being sent to the storage tank. The pitch at the bottom of Tower 1 is pumped out by the pitch extraction pump and sent to the mixer in the outlet pipeline of Pump 2 for mixing with the pitch coming from the bottom of Reactor 2; this mixture then enters the heating furnace of Reactor 2, where a certain amount of α-resin is produced. A portion of the pitch exiting the heating furnace, along with the oil vapor from the top of the reactor, enters Tower 2, where the pitch is stripped using superheated steam from the steam superheater. The modified pitch obtained at the bottom of the tower is pumped out by a pitch pump and sent to the intermediate tank via Pump 2 and Steam Generator 2. The superheated steam and oil vapor coming from the top of Tower 2# enter Tower 1#. The finished asphalt in the intermediate tank of the modified asphalt is continuously pumped out by an asphalt shaping and loading pump, cooled in a cooler, then fed into an asphalt shaping machine for cooling and shaping, before being packaged and transported away.