Hydrogen production system and hydrogen production method using biochar oven

A hydrogen production system using a biochar oven, the system comprising:

• a vertical pyrolysis furnace into which a pyrolysis target including at least one of waste plastic and fossil fuel is supplied in a free fall scheme by its own weight;
• a plate-shaped flameless heater configured to heat the vertical pyrolysis furnace such that a high-temperature atmosphere of 800 to 1300° C. is generated therein;
• a solid-gas separator installed under a bottom of the vertical pyrolysis furnace and configured to receive a biochar-gas mixture produced from the vertical pyrolysis furnace and to separate the biochar-gas mixture into the BOG and the biochar and to discharge the BOG and the biochar;
• and
• a BOG purification unit configured to receive therein the biochar separated using the solid-gas separator therefrom, and use the received biochar as an adsorbent, wherein the BOG separated using the solid-gas separator passes through the received biochar in the BOG purification unit such that impurities contained in the BOG are removed therefrom.

A hydrogen production method using a biochar oven, the method comprising:

• inputting a pyrolysis target into a vertical pyrolysis furnace in a free fall manner under a gravity;
• generating heat in a range of 800 to 1300° C. from a plate-shaped flameless heater installed on one side of the vertical pyrolysis furnace to maintain an internal temperature of the vertical pyrolysis furnace at around 700 to 1100° C. such that a biochar-gas mixture is produced from the vertical pyrolysis furnace;
• transferring a biochar-gas mixture produced from the vertical pyrolysis furnace is to a solid-gas separator in which the solid-gas separator separates the biochar-gas mixture into solid biochar and gaseous BOG, and discharges the solid biochar downwardly by gravity, and discharges the gaseous BOG upwardly to an exhaust pipe;
• filling the solid biochar separated using the solid-gas separator into a BOG purification unit so as to be used as an adsorbent thereby;
• and
• passing the BOG separated using the solid-gas separator through the biochar contained in the BOG purification unit such that the adsorbent absorbs and removes impurities contained in the BOG.