Patent ID: 8048177
Filing Date: 2011-11-01
Classification: B01J,C01B,H01M,Y02E,Y02P

Abstract:
1. A hydrogen production system comprising: a gasifier for gasifying a mixed material containing a hydrocarbon-based material by heating; a reformer for producing reformed gas containing hydrogen from the gasified mixed material by reforming reaction of the hydrocarbon-based material; a gas-liquid separator for separating and removing a liquid component contained in the reformed gas from the reformed gas for discharge as drain; and a pressure swing adsorption gas separation apparatus for performing pressure swing adsorption gas separation using an adsorption tower loaded with an adsorbent, in which the reformed gas after passing through the gas-liquid separator is supplied into the adsorption tower for adsorbing an unnecessary component contained in the reformed gas by the adsorbent, hydrogen-rich gas is discharged from the adsorption tower, the unnecessary component is desorbed from the adsorbent, and offgas containing hydrogen remaining in the adsorption tower and the unnecessary component is discharged; the gasifier being designed to burn the offgas discharged from the adsorption tower to produce combustion gas and heat the mixed material by using the combustion gas as heat source, the gasifier including a first container having a combustion gas outlet for discharging the combustion gas; wherein the system further comprises a second container accommodating an evaporator for evaporating the drain discharged from the gas-liquid separator by the combustion gas discharged from the gasifier, the second container also accommodating a decomposer downstream from the evaporator for catalytically decomposing a hazardous component contained in the evaporated gas from the evaporator, the second container having a combustion gas inlet connected to the combustion gas outlet of the first container for introducing the combustion gas from the gasifier into the second container and a drain inlet connected to the gas-liquid separator for receiving the drain from the gas-liquid separator, the second container including a common gas outlet for discharging the combustion gas to an outside environment together with gases resulting from the evaporation of the drain and the decomposition of the hazardous component.