Trapping behavior of gaseous cesium by fly ash filters.
The high volatility of a gaseous form and its high chemical reactivity make a cesium emission control very difficult work. In this study, fly ash filters were tested for the removal of gaseous cesium from a hot flue gas under air and hydrogen conditions at 700-1000 degrees C. Tests were performed by using a simulated gaseous cesium volatilized from Cs(2)SiO(3) in a two-zone furnace. Fly ash filter was found to be the most promising filter for trapping the gaseous cesium. The results of the trapping tests are presented, along with the effects of the temperature, superficial gas velocity, and carrier gas on the cesium trapping quantity.
Shin
J M
JM
Korea Atomic Energy Research Institute, 150 Dukjin-dong, Yuseung-gu, Daejeon 305-353, Republic of Korea. jmshin@kaeri.re.kr
Park
J J
JJ
Song
K C
KC
Kim
J H
JH
D000397:Air Pollution / Q000517:prevention & control; D002244:Carbon / Q000737:chemistry*; D002586:Cesium / Q000302:isolation & purification*; D060729:Coal Ash; D005374:Filtration; D005740:Gases; D017745:Incineration; D007220:Industrial Waste / Q000517:prevention & control; D052638:Particulate Matter / Q000737:chemistry*; D017655:Silicon Compounds; D013696:Temperature
D060729:Coal Ash; D005740:Gases; D007220:Industrial Waste; D052638:Particulate Matter; D017655:Silicon Compounds; D002586:Cesium; D002244:Carbon