The invention provides a recycling hydrogen-donating solvent for direct coal liquefaction and a preparation method therefor and use thereof, the recycling hydrogen-donating solvent provided by the preparation method of the invention can be used for obtaining the recycling hydrogen-donating solvent with good hydrogen-donating capacity through a relatively simple process flow. The preparation method comprises the following steps: 1) carrying out first fractionation on a direct coal liquefaction oil to obtain liquefied medium oil and liquefied heavy oil; 2) feeding the liquefied heavy oil into a first hydrogenation reactor and carrying out a first-stage hydrogenation reaction; 3) feeding the liquefied medium oil and the liquefied heavy oil subjected to the first-stage hydrogenation reaction in the step 2) into a second hydrogenation reactor, and carrying out a second-stage hydrogenation reaction to obtain hydrogenated product oil; 4) performing second fractionation on the hydrogenated product oil to obtain medium-temperature solvent oil and high-temperature solvent oil; and 5) mixing the medium-temperature solvent oil and the high-temperature solvent oil to prepare the recycling hydrogen-donating solvent.

Refinement of asphaltene products (e.g. roof shingles) derived either from synthetic usages as well as naturally occurring crude oil in formation that has asphaltene content, is disclosed. The refinement has no need for any energy to be applied, in contrast with methods that produce pyrolytic oil from shingles. The refinement with PRIF derives a certain amount oil per ton of asphaltene product pyrolyzed and, how much by products can also be cleanly recycled, and how each of those constituents can be reused in the multiple ways. A pyrolytic oil-separation process but doing so while consuming minimal energy is disclosed. One intent is remanufacturing asphalt based products back into their natural constituents.