Differences between coal tar and residue hydrogenation
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Which is easier, tar hydrogenation or atmospheric residue hydrogenation? What are the differences in conversion rates?
Residue hydrocracking is easier. Due to its lower content of aromatic hydrocarbons
Coal tar is divided into low-temperature coal tar, medium-temperature coal tar, and high-temperature coal tar, based on the temperature during the carbonization of coal; as a result, the tar produced varies, and there are significant differences in their properties. Medium- and low-temperature coal tar has better properties, with a high content of alkanes; its distillation fractions are similar to those of diesel, so hydrogenation of medium- and low-temperature coal tar is easier than that of residue oil ； High-temperature coal tar, on the other hand, has a higher content of aromatics and heteroatoms, making it more difficult to process compared to residue hydrogenation.