Hydro-upgrading Technology of Direct Coal Liquefied Oil (RCHU)
- Introduction
- Technical Characteristics
Introduction
Liquefied oil produced by direct coal liquefaction (coal liquefied crude oil) maintains some properties of coal such as high aromatics, nitrogen and oxygen content, which need further hydro-upgrading before being used as final products.
The hydro-upgrading of direct coal liquefied oil usually contains two steps: stable hydrogenation and hydro-upgrading. Under moderate conditions, fixed bed hydrofining and hydro-upgrading are applied to get rid of atoms of nitrogen, sulfur and oxygen and improve cetane number of diesel at the same time.
The hydro-upgrading of direct coal liquefied oil usually contains two steps: stable hydrogenation and hydro-upgrading. Under moderate conditions, fixed bed hydrofining and hydro-upgrading are applied to get rid of atoms of nitrogen, sulfur and oxygen and improve cetane number of diesel at the same time.
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