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2014-11-26 - Colloque/Présentation - communication orale - Anglais - 1 page(s)

Laribi Sinda, "CO2 capture, purification and conversion into methanol" in First ECRA Chair Scientific Event “From CO2 to energy”: CO2 capture and reuse in the cement industry, Mons, Belgique, 2014

  • Codes CREF : Traitement des effluents gazeux (DI3843), Technologie de l'environnement, contrôle de la pollution (DI3841)
  • Unités de recherche UMONS : Génie des Procédés chimiques et biochimiques (F505)
  • Instituts UMONS : Institut de Recherche en Energétique (Energie)

Abstract(s) :

(Anglais) ECRA Chair projects at UMONS: CO2 capture, purification and conversion into methanol Carbon Capture and Utilization (CCU) is one of the most widely studied technology to reduce anthropogenic CO2 emissions and particularly the ones coming from power plants and cement plants which are currently among the world’s main industrial sources of carbon dioxide. As a result, in the framework of the ECRA Academic Chair at UMONS, this study focuses on the optimization of an overall CCU process that should be applied to an oxyfuel cement plant, and including the CO2 capture from flue gases and its purification in order to obtain a rich CO2 stream that will be further converted into methanol. To investigate the feasibility of such as process, two units (namely sour compression and cryogenic units) have been modeled and simulated on Aspen Plus software. These simulations were conducted considering flue gases compositions coming from both power and cement oxyfuel plants in order to compare their respective energy demands with regard to the CO2 purity of the end-of-pipe product and to the CO2 recovery of the overall process. It was observed that such process applied to simulated oxyfuel cement plant flue gases has a global CO2 recovery range of 75.8 – 93.8% and that the CO2 molar purity of the final stream is between 94.8 and 98.4%. This process appears to be completely applicable for the treatment of oxyfuel cement plant flue gases with CO2 recovery and CO2 molar purity in agreement with requirements for the chemical conversion of carbon. Regarding the conversion step, the future tasks will be focused on the simulation of the catalytic conversion process (influence of operating parameters on the conversion efficiency) and on the experimental investigation of the influence of gaseous impurities on catalysts performances and aging.