Recommendations are given on organizing comprehensive processing of asphalt from deasphalting of vacuum resid with liquid propane to obtain a number of commercial products and valuable distillates.Asphalt from deasphalting vacuum resid with liquid propane is a "residual" by-product,a mixture of hydrocarbons,resins and asphaltenes,and heterocyclic compounds.This high-molecular-weight,high-viscosity product has a softening point t_s(R & B)from 35 to 50deg C and higher.
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