Improving a New binding organic liquid of non-aqueous Alkanolamine for Capturing Carbon Dioxide Using Saturated Cell

Abstract

Recently capturing of Carbon dioxide (CO₂) considered as one of the most important issue due to its dangerous effect on the climate change. Absorption technology is the most used technology for CO₂ capture. However, this technology has a drawbacks mainly related to the solvent used especially the limiting capacity and the high regeneration energy. For this reason, there is a necessity to modernize a new solvent for CO₂ capture. This work focuses on study the potential of non-aqueous blended amines. The solved consist of blend of three class of alkanol amine with alcohol. The chosen alkanplamines were mono ethanol amine (MEA), methyl-diethanolamine (MDEA), 2-amino-2-methyl-1-propanol (AMP) and piperazine (Pz) all the alkanolamines prepared by binding ethanol at the mole ratio of 1:1. The consequences displays that the performance of absorption and desorption was enhanced significantly. All the binding solvents achieved a high absorption performance varied from (5-3) mole CO₂ /kg solvent.min. in the order of MEA<PZ<AMP<MDEA. On the other hand, the desorption performance of the bindings varied from (96-99) % in the order of MDEA< MEA <AMP <PZ. The improving of CO₂ absorption and desorption discovered that the binding of MEA with ethanol is a superior solvent with absorption loading of 5 mole CO₂ /kg solvent. min. . Besides, the regeneration efficiency was 98 %. Also, it can effectively use for three cycle without significant change in the solvent properties. Consequently, the binding solvent of MEA/ethanol can use successfully for capturing CO₂ from the flue gas.