Carbon dioxide free radical based oxygen-containing gas deoxygenation method
A carbon dioxide and free radical technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of heavy metals and the slow rate of deoxygenation, expensive equipment and expensive catalysts, etc. And easy to run, easy to obtain, to achieve the effect of automatic management and control
Inactive Publication Date: 2015-04-29
ZHEJIANG UNIV
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Problems solved by technology
[0007] The invention provides a method for removing oxygen from oxygen-containing gas based on carbon dioxide free radicals, which is a method of removing oxygen with mild conditions and no residual harmful substances, and solves the problems of complicated operation and expensive equipment in the existing physical method of oxygen removal technology And the problem of slow oxygen removal rate, as well as the problems of expensive catalyst, high energy consumption, heavy metal content and slow oxygen removal rate in chemical oxygen removal technology
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Embodiment 1
[0047] A method for deoxygenating an oxygen-containing gas based on carbon dioxide free radicals, the deoxygenation method utilizes figure 1 The reaction tower shown is carried out. The deoxygenated gas enters the bottom of the contact tower from the inlet I through the one-way valve VI at 0.25L / min, and is dispersed through the microporous aeration plate II (G-3 sand core, pore size 5-9μm). After forming microbubbles, enter activated carbon packed column III (filling height 105cm, corresponding empty bed contact time is 10min, material is neutral activated carbon, purchased from Gongyi City Ultra Clean Water Material Factory, activated carbon particle size is 30 mesh), active Carbon packed column III impregnated in sodium formate and H 2 o 2 In the mixed solution IV (the molar concentration ratio of the two is 20:1), adjust sodium formate and H 2 o 2 The pH of the mixture was 7. The gas deoxygenates under the joint action of the mixed liquid and activated carbon, and the ...
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The invention discloses a carbon dioxide free radical based oxygen-containing gas deoxygenation method, which comprises the following steps: blowing an oxygen-containing gas into a contact tower, and carrying out a contact reaction between the oxygen-containing gas and an active carbon catalyst bed impregnated with a mixed liquor of formate and hydrogen peroxide, wherein the molar concentration ratio of hydrogen peroxide to formate is 1:20-25 and empty bed contact time of the contact reaction is 10-30min. The method provided by the invention is a deoxygenation method which has advantages of mild condition and no harmful substance residue. By the adoption of the method, problems of complex operation, expensive equipment and slow deoxygenation speed existing in a present physical method and problems of expensive catalyst, high energy consumption, heavy metal and slow deoxygenation speed existing in a chemical deoxygenation technology are solved. The deoxygenation method provided by the invention can be used to rapidly remove oxygen in the air and can be used in removal of oxygen in large-scale air.
Description
technical field [0001] The invention relates to the technical field of deoxygenation, in particular to a method for deoxygenating an oxygen-containing gas based on carbon dioxide free radicals. Background technique [0002] Oxygen is the second largest component in the air except nitrogen, with active chemical properties and strong oxidation ability. It can undergo oxidation-reduction reactions with metals, non-metals, and organic substances to generate relatively stable oxidation products. When the oxygen in the air dissolves in water, it is also easy to react with metals and organic substances, causing metal corrosion or organic substances to deteriorate. Therefore, many industries, such as industrial water supply, boiler water supply, food, electronics, metallurgy and other industries, need to remove oxygen from the air or water. [0003] At present, oxygen removal technology mainly includes physical method and chemical method. The physical methods include: vacuum deox...
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IPC IPC(8): B01D53/74B01D53/86B01D53/46
Inventor 刘小为张土乔叶苗苗张仪萍
Owner ZHEJIANG UNIV