| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing hydrogen enabling the production, in a high productivity, of hydrogen from a raw ingredient consisting of a hydrocarbon-containing gas having a high hydrogen content and a relatively low pressure such as an off gas from an oil refinery, etc.SOLUTION: The provided method for manufacturing hydrogen includes: a hydrogenating step of hydrogenating a gas including hydrocarbons and hydrogen together with a hydrocarbon oil including at least one type selected from the group consisting of unsaturated hydrocarbons and aromatic hydrocarbons in the presence of a hydrogenating catalyst at a liquid spatial velocity of 0.5-5 hand at 0.1-0.6 Mpa within a range of 100 to 250°C; a separating step of separating the hydrogenated product obtained at the hydrogenating step into a hydrocarbon gas including no more than 10 vol.% of hydrogen and a hydrocarbon oil; and a hydrogen production step of manufacturing hydrogen by using, as a raw ingredient, the hydrocarbon gas separated at the separating step based on a steam reforming reaction. |
