oa Demonstration of Biomass Cofiring with Postcombustion Carbon Capture for Net-Negative Carbon Emissions

The University of North Dakota Energy & Environmental Research Center (EERC) has demonstrated pilot-scale technologies that result in power generation with a net-carbon-negative footprint. Experiments were conducted at the EERC Carbon Capture Test Center by cofiring coal and biomass fuel blends, as well as 100% biomass feeds, and evaluating the effects of the resulting flue gas compositions on postcombustion carbon dioxide (CO2) capture systems. After several traditional gas cleanup steps, CO2 was separated from the flue gas stream using an amine-based carbon capture solvent. Solvent performance and contaminant accumulation within the solvent separation system were examined, along with fireside performance of corn stover.

This presentation will detail the experimental method and describe the pilot-scale equipment used to combust the fuel blends, clean the flue gas, and capture CO2. Results of fuel processing challenges and contaminant accumulation in the solvent will be given along with opportunities for further equipment and process development.