| 摘要 |
A method for the treatment of drain in hydrogen production which comprises the gasification step conducted in a gasifier (1), the reforming step conducted in a reformer (2), the gas-liquid separation step conducted in a gas-liquid separator (4), the PSA gas separation step conducted in a PSA separator (5), and the evaporation step conducted in a drain treatment unit (6). A methanol-containing mixed raw material is gasified by heating in the gasification step, and a hydrogen-containing reformed gas is produced from the mixed raw material through the reforming of methanol in the reforming step. The liquid component of the reformed gas is separated in the gas-liquid separation step and discharged as drain, while hydrogen-rich gas and off-gas are taken out from the reformed gas in the PSA gas separation step by a PSA separation method with an adsorption column. In the gasification step, the off-gas is burnt and the formed combustion gas acts as a heat source to heat the mixed raw material. Further, the combustion gas after the heating of the mixed raw material is used as a heat source in evaporating the drain in the evaporation step. |
