| 摘要 |
<p>The process for hydrogenation of coal is carried out in presence of a catalyst and hydrogen. This process is characterized by the fact that the fresh coal slurry, brought to the reaction pressure by pumping, is divided in two partial currents which are separately conveyed to the reaction zone (12). The preheating is effected, on one hand, for a first partial current outside the reaction zone (12) by heat exchange with the hydrogenated product being in a gas or vapor phase, and on the other hand the preheating is effected, for a second partial current inside of the reaction zone (12) by direct heat transmission, said heat being emitted by the exothermic reaction taking place inside the reaction zone (12), which also allows to heat the partial current up to the priming temperature of hydrogenation.</p> |
