Recovery of carbon dioxide from flue gas streams by vacuum swing adsorption

Abstract

Pressure swing adsorption is a widely accepted technology for gas separation. There has been interest in using this technology for CO2 capture from exhaust gases to help mitigate global warming. Separation of CO2 from flue gases containing 10% CO2 in nitrogen by vacuum swing adsorption (VSA) using zeolite 13X was studied theoretically. Application of control loops within the simulation led to a constrained cyclic steady state (CSS) solution which satisfies the designed specifications, that is, some dependent variables in the PSA system are forced to reach their preset target values at CSS by adjusting those parameters with Proportional Integral Derivative algorithms. Two different rectifying..