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公开(公告)号：US20190314789A1
公开(公告)日：2019-10-17
申请号：US16469885
申请日：2017-12-13
发明人： Katsumi Nochi , Koji Higashino , Tomotsugu Masuda
摘要： Provided is a catalyst for removing NOx from a combustion exhaust gas, in particular, a low-NOx combustion exhaust gas, wherein the catalyst has a ratio of a pore volume in a range of not less than 500 Å and not more than 3000 Å in a pore diameter relative to a total pore volume of not less than 15% and not more than 40% and preferably a ratio of a pore volume in a range of not less than 1000 Å in the pore diameter relative to the total pore volume of not less than 10% and not more than 45% in a pore volume distribution in a range of not more than 105 Å in the pore diameter, and where SILICA is unlikely to be deposited and even when the amount of SILICA deposited is increased, denitration performance is hardly lowered.
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公开(公告)号：US09623402B2
公开(公告)日：2017-04-18
申请号：US14786184
申请日：2014-04-17
发明人： Tomotsugu Masuda , Katsumi Nochi
IPC分类号： B01J37/12 , B01J37/14 , B01J27/053 , B01D53/86 , B01J37/02 , B01J21/06 , B01J23/22 , B01J35/10 , B01J35/04 , B01J37/08
CPC分类号： B01J27/053 , B01D53/8628 , B01D2255/2047 , B01D2255/20707 , B01D2255/20723 , B01D2255/9207 , B01D2258/0283 , B01J21/063 , B01J23/22 , B01J35/04 , B01J35/1014 , B01J35/1038 , B01J37/02 , B01J37/0242 , B01J37/08
摘要： Provided is a denitration catalyst with an improved wear resistance capable of stably reducing and removing nitrogen oxides in flue gases for a long period of time and a production method therefor. A denitration catalyst obtained by having a honey comb molded body that contains at least titanium oxide and vanadium pentoxide support magnesium surface, and wherein the peak intensity ratio of the first peak of the magnesium sulfate to the first peak of the titanium oxide in X-ray diffraction is 0.05-0.15, the content of the magnesium sulfate increases by 6-22% by mass, the pore volume is 0.17-0.40 cc/g, and the specific surface area is 33-100 m2/g.
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公开(公告)号：US11376566B2
公开(公告)日：2022-07-05
申请号：US16469885
申请日：2017-12-13
发明人： Katsumi Nochi , Koji Higashino , Tomotsugu Masuda
摘要： Provided is a catalyst for removing NOx from a combustion exhaust gas, in particular, a low-NOx combustion exhaust gas, wherein the catalyst has a ratio of a pore volume in a range of not less than 500 Å and not more than 3000 Å in a pore diameter relative to a total pore volume of not less than 15% and not more than 40% and preferably a ratio of a pore volume in a range of not less than 1000 Å in the pore diameter relative to the total pore volume of not less than 10% and not more than 45% in a pore volume distribution in a range of not more than 105 Å in the pore diameter, and where SILICA is unlikely to be deposited and even when the amount of SILICA deposited is increased, denitration performance is hardly lowered.
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公开(公告)号：US20180185834A1
公开(公告)日：2018-07-05
申请号：US15740554
申请日：2016-07-07
发明人： Tomotsugu Masuda , Masanao Yonemura , Masanori Demoto , Kazuhiro Iwamoto , Toshinobu Yasutake , Makoto Yokoyama
CPC分类号： B01J38/60 , B01D53/8625 , B01D53/8696 , B01D53/96 , B01D2255/20707 , B01D2255/20723 , B01D2255/20769 , B01D2255/20776 , B01J21/063 , B01J23/30 , B01J23/92 , C11D3/042 , C11D3/046 , C11D7/08 , C11D7/10
摘要： Provided are: a cleaning agent for a denitration catalyst; and a denitration catalyst regeneration method and a denitration catalyst regeneration system which make it possible to efficiently remove matter adhering to a surface of a catalyst and to greatly restore catalytic performance. The regeneration method includes: a prewashing step (S12) of washing a denitration catalyst with water; a liquid agent cleaning step (S14) of immersing the denitration catalyst washed with water in a liquid agent containing an inorganic acid and a fluorine compound; a step of recovering the denitration catalyst from the liquid agent; and a finish washing step (S16) of washing the denitration catalyst recovered from the liquid agent with a finish cleaning liquid which is water or sulfamic acid-containing water.
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5.发明申请公开(公告)号：US20190232221A1
公开(公告)日：2019-08-01
申请号：US16313649
申请日：2017-07-28
发明人： Koji Higashino , Akihiro Sawata , Toshinobu Yasutake , Masanao Yonemura , Katsumi Nochi , Takafumi Kubota , Tomotsugu Masuda , Tomoaki Isobe
CPC分类号： B01D53/8628 , B01D53/86 , B01D53/90 , B01D2257/40 , B01J23/46 , B01J23/468 , B01J35/10 , B01J35/1014 , B01J37/02 , B01J37/0201 , B01J37/08 , B01J37/18
摘要： Provided are: an exhaust gas treatment catalyst capable of improving NO conversion rate when performing denitrification using CO as a reducing agent, and improving CO oxidation rate when oxidizing CO present in the exhaust gas; a method for producing an exhaust gas treatment catalyst; and an exhaust gas treatment system. The exhaust gas treatment catalyst is a catalyst which uses CO as a reducing agent to treat exhaust gas from a sintering furnace, and contains: a support that is a metal oxide or metal sulfate; and an active metal containing at least iridium supported by the support, wherein the specific surface area of the catalyst is 100 m2/g or less, and the crystallite size of iridium in the catalyst is 10-25 nm.
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公开(公告)号：US09851101B2
公开(公告)日：2017-12-26
申请号：US15026452
申请日：2015-06-05
发明人： Tomotsugu Masuda , Masashi Kiyosawa
IPC分类号： B01D53/14 , B01D53/56 , B01D53/75 , B01D53/81 , B01D46/00 , F23J15/02 , F23J15/00 , F23L15/00 , F22B31/08 , F23L15/04 , F01K13/00
摘要： A boiler system is provided including: a boiler that burns fuel containing sulfur content, chlorine content, and water content to generate a combustion gas; a bagfilter that removes sulfur oxide; a denitration section that removes nitrogen oxide; a desulfurizing absorbent supply section that mixes a desulfurizing absorbent into the combustion gas on an upstream side of the bagfilter; and a reformer that mixes a denitrating reagent into the combustion gas on an upstream side of the denitration section, wherein the bagfilter performs dry desulfurization, and a temperature of the combustion gas passing through the bagfilter and flowing into the denitration section is higher than 200° C. and 350° C. or lower, and the combustion gas from which the sulfur oxide has been removed by the bagfilter flows into the denitration section without being heated on the upstream side of the denitration section.
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