Hydrogen heating apparatus for blast furnaces, hydrogen heating method for blast furnaces, and blast furnace operation method

A hydrogen heating method for a blast furnace that heats a hydrogen-based gas containing hydrogen and supplies the hydrogen-based gas to the blast furnace, the hydrogen heating method for a blast furnace comprising:

• a lead-in step of leading the hydrogen-based gas into a sealed container;
• a temperature adjusting step of adjusting a temperature of a heat generating element provided inside the sealed container by a temperature adjustment unit;
• and
• a heat generating step of generating heat from the heat generating element by occluding and discharging the hydrogen in the heat generating element, wherein
• the heat generating element includes one or more stacked bodies each including a support made of at least one of a porous body, a hydrogen permeable film, and a proton conductor, and a multilayer film supported by the support,
• the multilayer film has a first layer made of a hydrogen storage metal or a hydrogen storage alloy and having a thickness of less than 1000 nm, and a second layer made of a hydrogen storage metal or a hydrogen storage alloy different from the first layer, or ceramics and having a thickness of less than 1000 nm, and
• the hydrogen-based gas is heated to a predetermined temperature by the heat generating element.