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1. 发明授权

US4977127A Catalyst for denitrizing nitrogen oxides contained in waste gases 失效
标题翻译：用于脱氮废气中所含氮氧化物的催化剂
公开(公告)号：US4977127A
公开(公告)日：1990-12-11
申请号：US393071
申请日：1989-08-07
申请人： Hiroaki Rikimaru , Tadao Nakatsuji , Toshikatsu Umaba , Kazuhiko Nagano , Kazuya Mishina , Hiromitsu Shimizu
发明人： Hiroaki Rikimaru , Tadao Nakatsuji , Toshikatsu Umaba , Kazuhiko Nagano , Kazuya Mishina , Hiromitsu Shimizu
IPC分类号： B01D53/86 , B01J21/06 , B01J23/22 , B01J23/24 , B01J35/10
CPC分类号： B01J21/066 , B01D53/8628 , B01J21/063 , B01J23/22 , B01J35/002 , B01J35/10 , B01J35/1057
摘要： A catalyst for denitrizing nitrogen oxides contained in waste gases in the presence of arsenic compounds, which comprises: titanium and vanadium therein in weight ratios of oxides of titanium to oxides of vanadium ranging from 99.9:0.1 to 92.0:8.0, the vanadium being concentratedly contained in the surface layer of the catalyst up to 200 .mu.m in depth from the surface of the catalyst in concentrations of at least about 1.5 times as much as the concentrations of vanadium throughout the catalyst.The catalyst may further contain therein at least one of tungsten and zirconium.The catalyst preferably has micropores of about not less than about 50 .ANG. in amounts of 0.25-0.40 ml/g, and micropores of about 50-100 .ANG. in radius in amounts of about 10-40% by volume and micropores of about 1000-60000 .ANG. in radius in amounts of not less than about 10% by volume, respectively, based on the total volume of the micropores of not less than about 50.ANG. in radius.The catalyst retains a higher denitrizing activity over a long period of denitrizing operations in the presence of arsenic compounds contained waste gases than the conventional catalysts.

2. 发明授权

US4859439A Catalyst and a method for denitrizing nitrogen oxides contained in waste gases 失效
标题翻译：催化剂和废气中所含的氮氧化物脱氮的方法
公开(公告)号：US4859439A
公开(公告)日：1989-08-22
申请号：US102639
申请日：1987-09-30
申请人： Hiroaki Rikimaru , Tadao Nakatsuji , Toshikatsu Umaba , Kuzuhiko Nagano , Kazuya Mishina , Hiromitsu Shimizu
发明人： Hiroaki Rikimaru , Tadao Nakatsuji , Toshikatsu Umaba , Kuzuhiko Nagano , Kazuya Mishina , Hiromitsu Shimizu
IPC分类号： B01D53/86 , B01J21/06 , B01J23/00 , B01J23/22 , B01J23/28 , B01J23/30 , B01J35/10
CPC分类号： B01J21/063 , B01D53/8628 , B01J23/22 , B01J35/1038 , B01J35/1061 , B01J35/1066 , B01J35/1071 , B01J35/108
摘要： A catalyst for denitrizing nitrogen oxides contained in waste gases, which comprises:(a) titanium, and(b) at least one base metal selected from the group consisting of V, W, Mo, Mn, Cu, Fe, Cr, Co, Ni, Zn and Sn, the catalyst containing titanium and the base metals in amounts of at least about 50% by weight in terms of oxides based on the catalyst, and titanium in amounts of about 80-99% by weight in terms of oxides and the base metals in amounts of about 20-1% by weight in terms of oxides, respectively, based on the total weight in terms of oxides of titanium and the base metals, and the catalyst having micropores of about 50-75000 .ANG. in radius in amounts of about 0.25-0.45 ml/g, and micropores of about 50-100 .ANG. in radius in amounts of about 10-40% by volume and micropores of about 500-60000 .ANG. in radius in amounts of not less than about 10% by volume, respectively, based on the total volume of the micropores of about 50-75000 .ANG. in radius, in the presence of a reducing gas at elevated temperatures.The catalyst retains a higher denitrizing activity over a long period time than the conventional catalysts, and is substantially free from deactivation with arsenic or arsenic compounds contained in waste gases.
摘要翻译： 1.一种用于脱氮废气中含有的氮氧化物的催化剂，其包括：（a）钛，和（b）选自V，W，Mo，Mn，Cu，Fe，Cr，Co， Ni，Zn和Sn中的至少约50重量％的钛和贱金属的催化剂，以氧化物为基准，以催化剂为基准，钛的量为约80-99重量％，以氧化物计，基于以氧化物为基准的总重量计，以氧化物计为约20-1重量％的贱金属，以钛和贱金属的氧化物计的总重量，以及具有约50-75000安培的微孔的催化剂半径约0.25-0.45ml / g的量的微孔和约50-100的微孔，其量为约10-40体积％，微孔为约500-60000，半径为不小于约10％体积，分别基于微孔的总体积约50-75000安培半径，在存在o f在升高的温度下还原气体。与常规催化剂相比，催化剂在长时间内保持较高的脱氨活性，并且与废气中所含的砷或砷化合物基本上没有失活。

3. 发明授权

US4952381A Method for denitrizing nitrogen oxides contained in waste gas 失效
标题翻译：废气中所含氮氧化物脱氮的方法
公开(公告)号：US4952381A
公开(公告)日：1990-08-28
申请号：US284764
申请日：1988-12-12
申请人： Horiaki Rikimaru , Tadao Nakatsuji , Toshikatsu Umaba , Kazuhiko Nagano , Kazuya Mishina , Hiromitsu Shimizu , Shigeru Nojima , Kozo Iida , Yoshiaki Obayashi , Touru Seto , Shigeaki Mitsuoka , Masayuki Hanada , Morio Fukuda , Kiyoshi Nagano , Makoto Imanari , Takeo Koshikawa , Akihiro Yamauchi
发明人： Horiaki Rikimaru , Tadao Nakatsuji , Toshikatsu Umaba , Kazuhiko Nagano , Kazuya Mishina , Hiromitsu Shimizu , Shigeru Nojima , Kozo Iida , Yoshiaki Obayashi , Touru Seto , Shigeaki Mitsuoka , Masayuki Hanada , Morio Fukuda , Kiyoshi Nagano , Makoto Imanari , Takeo Koshikawa , Akihiro Yamauchi
IPC分类号： B01D53/86 , B01J23/18 , B01J23/22 , B01J23/24 , B01J23/34 , B01J23/843 , B01J23/889
CPC分类号： B01J23/34 , B01D53/8628 , B01J23/18 , B01J23/22 , B01J23/24 , B01J23/8432 , B01J23/8892
摘要： A catalyst for denitrizing nitrogen oxides contained in waste gas which contains a substantial amount of arsenic compounds therein, which comprises:(a) titanium, and(b) at least one element selected from the group consisting of arsenic and manganese. The catalyst is resistant to deactivation by arsenic compounds and retains high denitrizing activity over a long period of time. The catalyst may further contain at least one base metal selected from the group consisting of V, W, Mo, Cu, Fe, Cr, Co, Ni, Zn and Sn.

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