BIPHASICS: Point-Source CO2 Capture with Biphasic Solvents
Category: Other
Developers: Oak Ridge National Laboratory
Product Description:An integrated system has been developed for post-combustion capture of CO2 from utility and industrial point sources using energy-efficient amine-based biphasic-solvent blends in absorption and desorption columns that are equipped with additively manufactured heat-exchange and catalytic packing elements, respectively, for enhanced CO2 absorption and energy-efficient solvent regeneration. The DETA-based biphasic formulation has proved to be an energy-efficient alternative to the traditional MEA solution used for point source capture when regenerated catalytically. In particular, recovery rates similar to that of the MEA solution can be obtained while regenerating substantially smaller solvent volume (up to 50% smaller) and requiring much less energy (up to 46% less per mol recovered). The unprecedented integration of heat exchange into a packed bed design is expected to reduce the footprint of the process and its capital costs while simultaneously improving process efficiency. In point source CO2 capture experiments with the heat-exchange packing, capture efficiency was enhanced by as much as 10% in the limited cases tested. Moreover, both the heat-exchange and catalytic packing devices have a wide range of potential industrial applications (e.g., distillation columns and petroleum refining, among others).
Developers: Oak Ridge National Laboratory
Product Description:An integrated system has been developed for post-combustion capture of CO2 from utility and industrial point sources using energy-efficient amine-based biphasic-solvent blends in absorption and desorption columns that are equipped with additively manufactured heat-exchange and catalytic packing elements, respectively, for enhanced CO2 absorption and energy-efficient solvent regeneration. The DETA-based biphasic formulation has proved to be an energy-efficient alternative to the traditional MEA solution used for point source capture when regenerated catalytically. In particular, recovery rates similar to that of the MEA solution can be obtained while regenerating substantially smaller solvent volume (up to 50% smaller) and requiring much less energy (up to 46% less per mol recovered). The unprecedented integration of heat exchange into a packed bed design is expected to reduce the footprint of the process and its capital costs while simultaneously improving process efficiency. In point source CO2 capture experiments with the heat-exchange packing, capture efficiency was enhanced by as much as 10% in the limited cases tested. Moreover, both the heat-exchange and catalytic packing devices have a wide range of potential industrial applications (e.g., distillation columns and petroleum refining, among others).
