| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas treatment device and a gas treatment method which effectively increase retention without complicating a structure.SOLUTION: A gas treatment device 1 includes a treatment structural body 20, a metal casing 30 which stores the treatment structural body, and a retention member 10 arranged between the treatment structural body and the casing. The retention member is made from silica fiber, has bulk density of 0.35 g/cmor greater and 0.45 g/cmor smaller, and may have retention per unit area of 6.0 N/cmor greater. Further, the retention member is made from alumina fiber, have bulk density of 0.35 g/cmor greater and 0.45 g/cmor smaller, and may have retention per unit area of 4.15 N/cmor greater. |
