A system and process for purifying hydrogen by pressure swing adsorption

Abstract

The application discloses a kind of variable pressure adsorption purification hydrogen system and process, belong to variable pressure adsorption gas technical field.The variable pressure adsorption purification hydrogen system of the application includes several adsorption towers, and raw material gas pipeline connected with each adsorption tower, order release system, flushing system, product gas system, equal pressure system, final filling system, reverse release system and flushing out system;The adsorption tower is divided into N series, N≥2, and the adsorbent ratio in the adsorption tower of same series is same;The adsorption tower of each series is provided with independent raw material gas pipeline, order release system, flushing system;The adsorption tower of each series shares product gas system, equal pressure system, final filling system, reverse release system and flushing out system.The application also discloses variable pressure adsorption purification hydrogen process using the above system.The application divides adsorption tower into N (N≥2) different series, and the adsorption process, order release process, flushing process of each series are independent, and N different compositions of raw material gas enters the adsorption tower of N series respectively to purify hydrogen, to realize the accurate treatment of different raw material gas.

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