Simulation of H2-Recovery for PSA Process in Indirect Coal Liquefaction System

The hydrogen recovered from tail gas of a clean fuel production system based on indirect coal liquefaction technology could be used as a source gas of hydrogenation. It is beneficial to environment protection and waste gas utilization. The advantages of pressure swing adsorption(PSA) include high efficiency, automatical operation, low capital investment and operating cost. In order to simulate the multicomponent separation process in a clean fuel production system, an implicit backward finite difference method was used to solve the equations of PSA. After about 10 cycles, the steadystate was achieved. After analysis of simulated data, the factors influcing on product concentration were summerized.