Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Organic component
Reexamination Certificate
2011-06-07
2011-06-07
Nguyen, Ngoc-Yen M (Department: 1734)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Organic component
C423S245100, C423S24000R, C423S24000R, C423S490000, C588S313000, C588S316000, C588S320000, C588S400000
Reexamination Certificate
active
07955578
ABSTRACT:
To provide a method and apparatus for treating a waste gas containing fluorine-containing compounds, according to which PFCs can be decomposed efficiently even at low temperature, and moreover fluorine from the product of the decomposition can be recovered for reuse efficiently. An embodiment of the present invention relates to a method of treating a gas containing a fluorine-containing compound, comprising contacting the gas with a treatment agent comprising a mixture of aluminum hydroxide and calcium hydroxide. Moreover, another embodiment of the present invention relates to an apparatus for treating a gas containing a fluorine-containing compound, comprising a treatment column comprising a hollow interior that is packed with a treatment agent comprising a mixture of aluminum hydroxide and calcium hydroxide and through which the gas can pass, heating means capable of heating the hollow interior to a prescribed temperature, a gas introduction port for introducing the gas to be treated into the hollow interior, and an exhaust pipe for discharging gas produced from the hollow interior.
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Mori Yoichi
Nagano Saburou
Nishikawa Tadakazu
Osato Masaaki
Tanabe Yoshihiro
Ebara Corporation
Nguyen Ngoc-Yen M
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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