Process for the hydrogenation of a carbon containing feedstock, in particular coal and/or heavy oil

Abstract From the Canadian patent

A process for the hydrogenation of a carbon compound containing feedstock, such as coal and/or heavy oil, by reaction with hydrogen at elevated pressure and temperature in a reactor. The feedstock is introduced under pressure into the upper part of the reactor and passes downwardly through the latter first through a heating or prereaction zone and then through a main reaction zone, while the required hydrogen passes upwardly in countercurrent through the reactor. The hydrogenation products are withdrawn at the top and the residue is withdrawn at the lower part of the reactor. Part of the contents of the reactor, which flows downwardly through the reactor is continuously recirculated from …