Open AccessCARBON DIOXIDE CAPTURE FROM FLUE GAS USING DRY REGENERABLE SORBENTS
Author(s) -
David A. Green,
Brian Turk,
Jeffrey W. Portzer,
Thomas Nelson,
Raghubir Gupta
Publication year - 2005
Language(s) - English
Resource type - Reports
DOI - 10.2172/838439
Subject(s) - sorbent , flue gas , carbon dioxide , sulfur dioxide , sodium carbonate , chemistry , sorption , inert , calcination , carbonate , waste management , inert gas , chemical engineering , adsorption , environmental chemistry , sodium , inorganic chemistry , catalysis , organic chemistry , engineering
This report describes research conducted between October 1, 2004 and December 31, 2004 on the use of dry regenerable sorbents for removal of carbon dioxide from flue gas. Two supported sorbents were tested in a bench scale fluidized bed reactor system. The sorbents were prepared by impregnation of sodium carbonate on to an inert support at a commercial catalyst manufacturing facility. One sorbent, tested through five cycles of carbon dioxide sorption in an atmosphere of 3% water vapor and 0.8 to 3% carbon dioxide showed consistent reactivity with sodium carbonate utilization of 7 to 14%. A second, similarly prepared material, showed comparable reactivity in one cycle of testing. Batches of 5 other materials were prepared in laboratory scale quantities (primarily by spray drying). These materials generally have significantly greater surface areas than calcined sodium bicarbonate. Small scale testing showed no significant adsorption of mercury on representative carbon dioxide sorbent materials under expected flue gas conditions