Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition – Control element responds proportionally to a variable signal...
Patent
1987-02-11
1989-04-11
Lacey, David L.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
Control element responds proportionally to a variable signal...
422171, 422176, G05D 700, B01D 5336, F01N 328
Patent
active
048204927
ABSTRACT:
A denitration apparatus is useful for the treatment of an NOx-containing untreated gas from an offgas source. The apparatus includes a means for feeding the NOx-containing untreated gas, a means connected to the feeding means so as to charge ammonia into the untreated gas, a denitration reactor with a catalyst packed therein, and a means for discharging the thus-denitrated gas. The apparatus also includes a bypass means, which connects the gas-discharging means to the gas-feeding means at a location upstream of the duct of the ammonia-charging means so that a portion of the untreated gas is caused to bypass the denitration reactor and is then mixed in the resultant gas. The apparatus further includes a means for regulating the flow rate of the untreated gas to be caused to pass through the bypass means.
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Ishikawa Tomihisa
Kuroda Hiroshi
Mori Yoshimichi
Wada Toshimichi
Babcock-Hitachi Kabushiki Kaisha
Lacey David L.
Woodard Joye L.
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