FLOW RATE CONTROL PRESSURIZATION METHOD FOR FOUR TOWER- TYPE PRESSURE-SWING ADSORPTION EQUIPMENT FOR PURIFYING HYDROGEN

摘要

PROBLEM TO BE SOLVED: To increase the pressure to a target value of the pressure in pressurization process of each adsorption tower and suppress the fluctuation of the amount of product hydrogen without depending on factors, such as the temperature of the outside air environment in wintertime, summertime, daytime or nighttime in a four tower-type pressure-swing adsorption equipment for purifying hydrogen. SOLUTION: A flow rate control pressurization method for the four-tower-type pressure-swing adsorption apparatus for purifying hydrogen is characterized in that, by monitoring as needed the pressure in the adsorption tower in a hydrogen pressurizing process while controlling the flow rate of pressurization hydrogen according to the preset value of the flow rate of hydrogen, and correcting little by little the preset value of the flow rate of hydrogen when the pressure in the adsorption tower is increased to a predetermined adsorption pressure while using a portion of the product hydrogen, the pressure is increased to the predetermined pressure and the fluctuation of the amount of the product hydrogen can be suppressed without depending on the factors such as the temperature of the outside air.