Operating ammonia storage system for catalyst system operating based on principle of selective catalytic reduction comprises a main memory that is equipped with heating device and contains ammonia-storing material

摘要

Operating an ammonia storage system (32) for a catalyst system operating based on the principle of selective catalytic reduction (SCR), comprises at least a main memory (34) equipped with a heating device (38), where the main memory contains ammonia-storing material reversibly binds to a temperature-dependent ammonia and is heated for the desorption of ammonia from the ammonia-storage material, and the heating of the main memory takes place using a pressure (P1) that exists in the main memory and controlled as the reference variable. Operating an ammonia storage system (32) for a catalyst system operating based on the principle of selective catalytic reduction (SCR), comprises at least a main memory (34) equipped with a heating device (38), where the main memory contains an ammonia-storing material reversibly binds to a temperature-dependent ammonia and is heated for the desorption of ammonia from the ammonia-storage material, the heating of the main memory takes place using a pressure (P1) that exists in the main memory and is controlled as the reference variable, and a heat quantity (Q) given by the heating device of the main memory is calculated such that a predetermined pressure (P2) in the main memory is adjusted corresponding to temperature-dependent pressure model that predicts a pressure change as a function of a temperature (T1) of the main memory. An independent claim is included for an ammonia storage system for SCR catalyst system comprising the main memory and a control device (52), which is arranged for performing the above method.