PERSPECTIVES OF CAP-TECHNOLOGY FOR THE CAPTURE OF CARBON DIOXIDE FROM GAS MIXTURES FOR ITS SUBSEQUENT USE IN CARBAMIDE PRODUCTION
DOI:
https://doi.org/10.18198/j.ind.gases.2013.0663Keywords:
Carbon dioxide, Ammonia, Water, Capture of CO2, Ammonia water, Flue gas, Compression of CO2, Carbamide, Energy savingAbstract
The «Chilled Ammonia Process» (CAP) technology can be used to capture carbon dioxide from the flue gases and others, for example, the gas waste from large power plants. The process, which is implemented by using CAP-technology, is described using the software developed by Thomsen and Rasmussen for the ternary system of CO2-NH3-H2O. The software allows to calculate the equilibrium vapor-liquid-solid in the ternary system as well as to determine the thermodynamic properties of the system in a wide range of component concentrations (up to 80 mol/kg H2O), in the temperature range from 0 to110 °Cand pressures up to 100 bar. CAP-technology is more preferable in comparison with monoet-hanolamine gas cleaning from CO2. It is shown that it is appropriate to use the technology to capture CO2 from the flue gas with a view to its subsequent supply for carbamide production. Different versions of compressing the resulting carbon dioxide to the pressure of 150 bars have been considered.
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