CARBON DIOXIDE CAPTURE FROM FLUE GAS USING DRY REGENERABLE SORBENTS

Green, David A. ; Turk, Brian S. ; Portzer, Jeffrey W. ; Gupta, Raghubir P. ; McMichael, William J. ; Nelson, Thomas

Research Triangle Institute (United States)

关键词: Absorption;    Sodium Carbonates;    Design;    Carbon Dioxide;    Air Pollution Control;   

DOI  :  10.2172/829536
RP-ID  :  NONE
RP-ID  :  FC26-00NT40923
RP-ID  :  829536

美国|英语

来源: UNT Digital Library

【 摘 要 】

This report describes research conducted between April 1, 2004 and June 30, 2004 on the preparation and use of dry regenerable sorbents for removal of carbon dioxide from flue gas. Support materials and supported sorbents were prepared by spray drying. Sorbents consisting of 20 to 50% sodium carbonate on a ceramic support were prepared by spray drying in batches of approximately 300 grams. The supported sorbents exhibited greater carbon dioxide capture rates than unsupported calcined sodium bicarbonate in laboratory tests. Preliminary process design and cost estimation for a retrofit application suggested that costs of a dry regenerable sodium carbonate-based process could be lower than those of a monoethanolamine absorption system. In both cases, the greatest part of the process costs come from power plant output reductions due to parasitic consumption of steam for recovery of carbon dioxide from the capture medium.