Abstract
In the process of road bitumen production, the raw material mixture is fed into an oxidizing column, where it is oxidized with air oxygen. Using this production method, a large amount of oxygen, without reacting, is sent to the scrubber and then to the afterburning furnace. One of the ways to use air oxygen more efficiently in the process of oxidized bitumen production is the use of pre-oxidant mixers. There is also a problem related to such a quality indicator as bitumen aging due to the use of air for mixing commercial bitumen, this problem is solved in a similar way – using a flow jet hydraulic mixer with a cone swirl. This article compares the existing remote gas-liquid cavitation vortex apparatus with a flow jet hydraulic mixer based on building their models in the Ansys CFX program and determining the air concentration in the mixture passing through the mixer. This indicator will reveal the most effective apparatus for the preoxidation of raw materials for bitumen production. A simulation of the flow of tar through a flow jet hydraulic mixer with a conical flow swirl is also performed to determine the turbulence and turbolization of the flow, which shows its effectiveness in mixing compounded bitumen.
Published Version
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