NOVELTY - The hydrogen production apparatus has Bunsen reactor (1), phase-separation device (2), hydrogen iodide concentrator (3), hydrocracking device (5), hydrogen iodide and iodine reclaimer (8), sulfuric acid concentrator (4), sulfuric acid decomposition device (6a) and sulfuric acid reclaimer (7). Reactor (1) decomposes sulfur dioxide (13), iodine (12) and water (9) to produce hydrogen iodide (14) and sulfuric acid (15). Device (5) decomposes hydrogen iodide into hydrogen (10) and iodine. Device (6a) decomposes sulfuric acid into sulfur dioxide, oxygen (11) and water.    USE - For producing hydrogen (claimed).    ADVANTAGE - The hydrogen production apparatus has favorable thermal efficiency, sulfuric acid decomposition ratio, and achieves non-equilibrium state exceeding thermodynamic chemical equilibrium state.    DETAILED DESCRIPTION - The hydrogen production apparatus has a Bunsen reactor (1), a phase-separation device (2), a hydrogen iodide concentrator (3), an iodination hydrocracking device (5), a hydrogen iodide and iodine reclaimer (8), a sulfuric acid concentrator (4), a magnetic field control sulfuric acid decomposition device (6a) and a sulfuric acid reclaimer (7). The Bunsen reactor decomposes sulfur dioxide, iodine and water (9) to produce hydrogen iodide (14) and sulfuric acid (15). The phase-separation device separates hydrogen iodide and sulfuric acid. The concentrated concentrates hydrogen iodide, and iodination hydrocracking device decomposes concentrated hydrogen iodide into hydrogen (10) and iodine (12). The hydrogen iodide and iodine reclaimer recovers iodine, hydrogen and non-decomposed hydrogen iodide. The sulfuric acid concentrator concentrates sulfuric acid. The decomposition device decomposes concentrated sulfuric acid into sulfur dioxide (13), oxygen (11) and water, and separates oxygen using magnetic field. The sulfuric acid reclaimer recovers decomposed sulfur dioxide. An INDEPENDENT CLAIM is included for hydrogen production method.    DESCRIPTION OF DRAWING(S) - The figure shows the block diagram of the structure of hydrogen production apparatus.    Bunsen reactor (1)    Phase-separation device (2)    Hydrogen iodide concentrator (3)    Sulfuric acid concentrator (4)    Iodination hydrocracking device (5)    Magnetic field control sulfuric acid decomposition device (6a)    Sulfuric acid reclaimer (7)    Hydrogen iodide and iodine reclaimer (8)    Water (9)    Hydrogen (10)    Oxygen (11)    Iodine (12)    Sulfur dioxide (13)    Hydrogen iodide (14)    Sulfuric acid (15)