CCS and Power Systems
Carbon Storage - Carbon Use and Reuse
Conversion of CO2 into Commercial Materials Using Carbon Feedstocks
Performer: Research Triangle Institute
Project No: FE0004329
Researchers at RTI International are conducting feasibility tests on using carbon as a reducing agent for CO2 utilization. A reducing agent (reductant) is an element or compound in a chemical reaction that reduces (adds electrons to) another species; the reducing agent then becomes oxidized (loses electrons) in the process. The chemistry for this proposed CO2 gasification process is based on the reverse Boudouard reaction, in which carbon (C) reduces CO2 to produce carbon monoxide (CO):
CO2 + C = 2CO
The reduced product (CO) can then be used to create other chemicals.
The scope-of-work has both laboratory and modeling components. The laboratory phase is focused on carbon reactions with multiple CO2 sources. This phase of the research utilizes thermogravimetric analysis (measuring small changes in weight as the temperature changes) and a bench-scale reactor system (Figure 1). The modeling effort is used to evaluate the overall process and demonstrate that it meets a net target cost of less than $10 per ton of CO2 stored with CO as the end product. Process simulation and modeling are being used to evaluate the economics and different configurations for optimizing CO2conversion. Process modeling is also being used to evaluate the addition of multiple supplemental processes for converting the CO into other chemicals.