Stable method of operating a hydrogen purification for 4-column pressure swing adsorption apparatus

摘要

PROBLEM TO BE SOLVED: To stabilize the flow rate of product gas, the purity of product hydrogen and the recovery rate of the product hydrogen corresponding to the temperature of the outside air environment in wintertime, summertime or the like in a four-tower-type pressure-swing adsorption equipment for hydrogen purification. ;SOLUTION: The method of stably operating the four tower-type pressure- swing adsorption equipment for hydrogen purification is characterized in that, by measuring and detecting the temperature of the product hydrogen gas, and then changing the cycle time according to the measured value, the flow amount of the product gas, the purity of the product hydrogen and the recovery rate of the product hydrogen can be stabilized.;COPYRIGHT: (C)2003,JPO