The U.S. Department of Energy has announced a successful trial of a new CO2 capture method using a new sorbent called BrightBlack™, designed by Advanced Technology Materials Inc. (ATMI).
In the DOE trial, CO2 was absorbed in a bed of sorbent pellets and desorbed in a separate reactor that regenerates the sorbent and cycled it back to the absorber. As the test run began, the observed CO2‑capture efficiency was as high as 95 percent and the captured CO2 purity was 95 to 100 percent. Through 7,000 absorption-regeneration cycles, and a total of 130 hours of operation, the sorbent showed little-to-no mechanical or chemical degradation. The high-capacity sorbent is regenerated easily at moderate thermal temperatures, making the process less energy-intensive than typical, amine-based CO2-capture processes.
The information from the trial will be used to design a larger, pilot-scale unit of 0.5 megawatts or more in preparation for potential future testing at an operating pulverized-coal boiler.
Source: DOE
In the DOE trial, CO2 was absorbed in a bed of sorbent pellets and desorbed in a separate reactor that regenerates the sorbent and cycled it back to the absorber. As the test run began, the observed CO2‑capture efficiency was as high as 95 percent and the captured CO2 purity was 95 to 100 percent. Through 7,000 absorption-regeneration cycles, and a total of 130 hours of operation, the sorbent showed little-to-no mechanical or chemical degradation. The high-capacity sorbent is regenerated easily at moderate thermal temperatures, making the process less energy-intensive than typical, amine-based CO2-capture processes.
The information from the trial will be used to design a larger, pilot-scale unit of 0.5 megawatts or more in preparation for potential future testing at an operating pulverized-coal boiler.
Source: DOE
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