Adsorber-reactor systems for emission treatment from mobile sources

Several typical reactor-adsorber arrangements proposed for elimination of e missions of hydrocarbons during the cold-start of automotive engines were s tudied and compared by means of mathematical modelling. The effects of syst em properties such as heat capacities, catalyst activity and operating para meters such as time of switching from adsorption mode to desorption mode an d bypass ratio were investigated. While some arrangements revealed relative ly high robustness and large range of available operating parameter interva ls for complete conversion of hydrocarbons, others exhibited high sensitivi ty to system properties and operating parameters. A simple adaptive control was tested for the reactor-adsorber-reactor arrangement. (C) 2001 Elsevier Science Ltd. All rights reserved.