Device for manufacturing direct-reduced iron and method for manufacturing direct-reduced iron

This device (100) for manufacturing direct-reduced iron has the following: a shift reactor (25) that uses the water-gas shift reaction to obtain, from an exhaust gas from a direct reduction furnace (30), a reaction gas that has a higher hydrogen concentration than the exhaust gas; CO 2 -removal equipment (28) that reduces the amount of carbon dioxide in the reaction gas, yielding a hydrogen-containing circulation gas; a heater (29) that heats the circulation gas, which is supplied to the direct reduction furnace (30); a junction part (51), in a gas channel (21) between the heater (29) and the direct reduction furnace (30), that mixes the circulation gas with coal gas; and a pressure-reduction part (19) in a coal-gas channel between a coal gasification furnace (10) and the junction part (51).