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    • 7. 发明申请
    • Method for purification of nitrogen oxide and apparatus for purfication of nitrogen oxide
    • 纯化氮氧化物的方法和氮氧化物的净化装置
    • US20090238749A1
    • 2009-09-24
    • US11990668
    • 2006-08-17
    • Hiroyuki HataKenji HamadaShinichi Tai
    • Hiroyuki HataKenji HamadaShinichi Tai
    • C01B21/20B01D3/00
    • C01B21/24C01B21/36
    • A nitrogen oxide purifying apparatus includes a gas absorption vessel (1) and a condenser (6), where the vessel receives an absorption solution containing liquefied N2O4 for absorbing NO and also receives a source gas to vary the temperature and/or pressure of the source gas and the absorption solution, while the condenser receives a gas from the gas absorption vessel (1) to vary the temperature and/or pressure of the gas. In the gas absorption vessel (1), the absorption solution containing liquefied N2O4 may be applied to the source gas containing NO, so that NO is absorbed in the absorption solution. Then the absorption-solution is heated and/or depressurized to generate an intermediate gas containing a relatively large amount of NO and a smaller amount of NO2 from the absorption solution. In the condenser (6), the intermediate gas is cooled and/or pressurized to give condensed N2O3 and/or condensed N2O4.
    • 氮氧化物净化装置包括气体吸收容器(1)和冷凝器(6),其中容器接收含有用于吸收NO的液化N2O4的吸收溶液,并且还接收源气体以改变源的温度和/或压力 气体和吸收溶液,而冷凝器从气体吸收容器(1)接收气体以改变气体的温度和/或压力。 在气体吸收容器(1)中,可以将含有液化的N 2 O 4的吸收溶液施加到含有NO的源气体上,使得NO吸收在吸收溶液中。 然后将吸收溶液加热和/或减压以产生含有相对大量的NO和较少量的来自吸收溶液的NO 2的中间气体。 在冷凝器(6)中,中间气体被冷却和/或加压以得到冷凝的N 2 O 3和/或冷凝的N 2 O 4。