The desorption of ammonia and carbon dioxide from multicomponent solutions: I. Model description and development

A mathematical model of the desorption process based on the synthesised technological topology of the regeneration process gas components NH3 and CO2, was developed. The logical principle methodology of the mathematical modelling of desorption processes was worked out in detail. The mathematical model of the process, including the following: - The synthesized technological scheme of the desorption of components NH3 and CO2, with all the necessary requirements and limitations of the mathematical model; - The relevant multicomponent systems which exist in the process were defined in which the interphase transformation occurs; - The considered units (aparatus) are defined which make up the basic technological topology of the process; - Desorption processes in towers with different types of trays were defined and mathematically described; - The cooling process and condensation of gas phase in a complex multicomponent system was of the gas phase in a complex multicomponent system was defined and mathematically described. Many variants of the process were analyzed by using developed model with the aim of determining the relevant functional dependences between some basic parameters of the process. They will be published in the second part of this study. U radu se analizira matematicki model procesa regeneracije amonijaka i ugljen dioksida iz visekomponentnog sistema NH3-CO2-H2O-NaCl-NH4CI. Razradjena je metodologija modelovanja desorpcionih procesa na usvojenoj tehnoloskoj topologiji postrojenja. Svi segmenti ovog slozenog tehnoloskog procesa su matematicki opisani, stvorenje originalan, kompleksan model predstavljen odgovarajucim algoritmom. Model je iskoriscen za proracun brojnih varijanti i simulacija procesa desorpcije NH3 i CO2 pri cemu je testirana i potvrdjena valjanost ovog modela, a rezultati ovih proracuna bice publikovani u II delu rada.