Chemische Grundlagen der Entwicklung eines Sprühwäschers zur Abtrennung von CO2 aus Rauchgasen: Neues Verfahren ― Bekannte Technik

Post-combustion capture by amine scrubbing is one technology for CO 2 capture from flue gases. The basic process is well known from industrial applications and is suitable to be retrofitted to power plants. Besides the development of new solvents, the IFK is currently investigating the use of open spray towers as alternative concepts to packed columns. Therefore different operational parameters for several solvents have been determined within lab-scale tests. It was found that the solvents are able to absorb the CO 2 fast enough during spray scrubbing. As a result, the necessary absorption height for different solvents was determined between 30 and 50 meters. Optimisation of the droplet size, liquid distribution and the contact time could further improve spray scrubbing. Based on these data and the knowledge from wet FGD systems, it was demonstrated that the use of spray towers for CO 2 capture is a promising alternative.