NOVELTY - An apparatus (1) for manufacturing hydrogen and synthetic natural gas (AA), consists of an apparatus (2) which produces synthetic natural gas from hydrogen and carbon dioxide by reverse shift reaction and methanation, and an apparatus (3) which produces hydrogen from a hydrogenated aromatic compound (BB) by dehydrogenation. Heat is supplied to the hydrogen generating apparatus from the synthetic-natural-gas production apparatus to utilize the reaction heat of methanation which is exothermic reaction for dehydrogenation which is endothermic reaction.    USE - Apparatus is used for manufacturing hydrogen and synthetic natural gas (claimed).    ADVANTAGE - The apparatus has improved thermal efficiency. Heat supply for dehydrogenation can be carried out and the amount of carbon-dioxide apparatus is suppressed.    DETAILED DESCRIPTION - An apparatus for manufacturing hydrogen and synthetic natural gas, consists of a synthetic-natural-gas production apparatus which produces synthetic natural gas from hydrogen and carbon dioxide by reverse shift reaction and methanation, and a hydrogen generating apparatus which produces hydrogen from a hydrogenation aromatic compound by dehydrogenation. Heat is supplied to the hydrogen generating apparatus from the synthetic-natural-gas production apparatus to utilize the reaction heat of methanation which is exothermic reaction for dehydrogenation which is endothermic reaction. An INDEPENDENT CLAIM is included for manufacture of hydrogen and synthetic natural gas, which involves producing synthetic natural gas from hydrogen and carbon dioxide by reverse shift reaction and methanation, producing hydrogen from a hydrogenated aromatic compound by dehydrogenation.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of apparatus used for manufacturing hydrogen and synthetic natural gas. (Drawing includes non-English language text)    Apparatus for manufacturing hydrogen and synthetic natural gas (1)    Synthetic-natural-gas production apparatus (2)    Hydrogen generating apparatus (3)    Pyrogenic synthesis-natural-gas production apparatus (11)    Low-temperature synthesis-natural-gas production apparatus (12)    Synthetic natural gas (AA)    Hydrogenated aromatic compound (BB)