Dehydrogenation reaction apparatus and system including the same

A dehydrogenation reaction system comprising:

• a dehydrogenation reaction apparatus comprising:
• a main housing;
• a dehydrogenation reactor provided inside the main housing and including a catalyst, the dehydrogenation reactor configured to generate hydrogen from a liquid organic hydrogen carrier (LOHC);
• and a heating device provided inside of the main housing and configured to apply heat to the dehydrogenation reactor through a phase change material, wherein the phase change material is provided between the main housing, the dehydrogenation reactor and the heating device;
• a preheater for preheating the liquid organic hydrogen carrier supplied to the dehydrogenation reaction apparatus;
• and
• a gas-liquid separator that separates the hydrogen produced in the dehydrogenation reaction apparatus and the liquid organic hydrogen carrier.