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公开(公告)号：US20240239665A1
公开(公告)日：2024-07-18
申请号：US18616778
申请日：2024-03-26
发明人： Tingyu Zhu , Xiaolong Liu , Yang Zou
CPC分类号： C01B32/50 , B01D53/002 , B01J19/0013 , B01J19/2445 , B01J21/04 , B01J2219/00103 , C01P2006/88
摘要： Provided are a system for preparing isotope-labeled carbon dioxide and a method therefor. The preparation method comprises: vaporizing heavy-oxygen water and mixing the heavy-oxygen water with carbon dioxide, and subjecting the heavy-oxygen water and the carbon dioxide to an oxygen-exchange reaction by catalyzing them with a catalytic material, and performing gas-liquid separation after the reaction to obtain the isotope-labeled carbon dioxide. The system provided by the present application has a simple structure, and by adopting the heavy-oxygen water which has a wide source and low cost as an oxygen isotope source and utilizing the oxygen-exchange reaction, the replacement of oxygen-16 in normal carbon dioxide by oxygen-18 in heavy-oxygen water is achieved to obtain the oxygen-18 labeled carbon dioxide product. The process is simple and pollution-free, the utilization rate of oxygen isotope is high, the conditions of separation and purification are mild, and the system has good economic benefits and application prospects.
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2.发明申请公开(公告)号：US20210170334A1
公开(公告)日：2021-06-10
申请号：US16768716
申请日：2018-03-20
发明人： Tingyu Zhu , Xiaolong Liu , Xue Wang , Ruliang Ning
摘要： Disclosed are a system and a method for desulfurization and denitrification of an alumina calcination flue gas, and a use. The system comprises an ozone generator (1), a red mud pre-impregnation slurry scrubbing tower (3), and a red mud pre-impregnation tank (5) and a red mud pre-impregnation clear liquid scrubbing tower (10). NOx in a flue gas is oxidized into a high valence oxynitride by ozone, and with the red mud as an absorbent, the synergistic absorption of SO2 and NOx in the flue gas is achieved, while the dealkalization of the red mud is achieved. By means of the synergistic catalytic oxidation of metal ions such as Fe3+ in a red mud slurry and ozone, the synergistic absorption of sulfur and oxynitride is prompted and the material consumption of the subsequent desulfurization and denitrification is reduced; and the use of a structure of staged absorption in two towers overcomes the problem of the difficulty in absorbing NO2 with a low O3/NOx molar ratio by enhancing absorption with sodium alkali in a second stage tower, while decreasing the consumption of and risk of escape of the ozone, wherein same has the advantages of a high purification efficiency and a low operation cost, and has a stronger applicability to the alumina calcination flue gas.
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3.发明授权公开(公告)号：US11090608B2
公开(公告)日：2021-08-17
申请号：US16768716
申请日：2018-03-20
发明人： Tingyu Zhu , Xiaolong Liu , Xue Wang , Ruliang Ning
摘要： Disclosed are a system and a method for desulfurization and denitrification of an alumina calcination flue gas, and a use. The system comprises an ozone generator, a red mud pre-impregnation slurry scrubbing tower, and a red mud pre-impregnation tank and a red mud pre-impregnation clear liquid scrubbing tower. NOx in a flue gas is oxidized into a high valence oxynitride by ozone, and with the red mud as an absorbent, the synergistic absorption of SO2 and NOx in the flue gas is achieved, while the dealkalization of the red mud is achieved. By means of the synergistic catalytic oxidation of metal ions such as Fe3+ in a red mud slurry and ozone, the synergistic absorption of sulfur and oxynitride is prompted; and the use of a structure of staged absorption in two towers overcomes the problem of the difficulty in absorbing NO2 with a low O3/NOx molar ratio.
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