Dehydrogenation reaction system and control method thereof

A method performed by an apparatus of a fuel cell system, the method comprising:

• determining whether a pressure of a hydrogen tank of the fuel cell system is less than a target pressure;
• based on the pressure of the hydrogen tank being less than the target pressure, supplying an acid aqueous solution to a dehydrogenation reactor of the fuel cell system and supplying a chemical hydride to the dehydrogenation reactor;
• storing hydrogen gas generated in the dehydrogenation reactor in the hydrogen tank;
• and
• controlling a pressure of the dehydrogenation reactor, to maintain a reference pressure after a dehydrogenation reaction in the dehydrogenation reactor is completed and a product generated in the dehydrogenation reactor is discharged, wherein the controlling of the pressure of the dehydrogenation reactor comprises;
• supplying an acid aqueous solution or water to the dehydrogenation reactor so that the product has a set volume within the dehydrogenation reactor while the hydrogen gas is maintained at a set pressure;
• and
• discharging the product to a product tank.

An apparatus of a fuel cell system, the apparatus comprising:

• a plurality of dehydrogenation reactors configured to generate, based on a chemical reaction of a chemical hydride and an aqueous acid solution, hydrogen gas;
• an acid aqueous solution tank configured to supply an acid aqueous solution to the plurality of dehydrogenation reactors;
• a chemical hydride tank configured to supply a chemical hydride to the plurality of dehydrogenation reactors;
• a hydrogen tank configured to store hydrogen gas generated in the plurality of dehydrogenation reactors;
• a hydrogen back pressure regulator disposed along a hydrogen discharge path between the plurality of dehydrogenation reactors and the hydrogen tank;
• a product tank configured to store products generated in the plurality of dehydrogenation reactors;
• a processor;
• and
• a memory storing at least one instruction that, when executed by the processor communicating with the memory, is configured to cause the apparatus to:
• control a pressure of one of the plurality of dehydrogenation reactors to maintain a reference pressure after a dehydrogenation reaction in the one of the plurality of dehydrogenation reactors is completed and a respective product generated in the one of the plurality of dehydrogenation reactors is discharged, wherein the pressure of the one of the plurality of dehydrogenation reactors is controlled by:
• before discharging the respective product to the product tank, discharge hydrogen gas from the one of the plurality of dehydrogenation reactors to another of the plurality of dehydrogenation reactors while maintaining a set volume ratio between the respective product and the hydrogen gas in the one of the plurality of dehydrogenation reactors.