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1. 发明专利

JPS59160536A Combustion-catalyst and its manufacture 失效
标题翻译：燃烧催化剂及其制造
公开(公告)号：JPS59160536A
公开(公告)日：1984-09-11
申请号：JP3438083
申请日：1983-03-04
申请人： Hitachi Ltd
发明人： UNO SHIGEO , KATOU AKIRA , KAMO YUUICHI , YAMASHITA HISAO , KAWAGOE HIROSHI , MATSUDA SHINPEI
IPC分类号： B01J23/63 , B01J23/56 , B01J37/02
摘要： PURPOSE:To increase the activity of a catalyst and to reduce the consuming amount of expensive precious metals by depositing >=1 kind of rare-earth metallic oxide and colloidal, precious metallic corpuscles on an inorg. carrier, and constituting a combustion catalyst. CONSTITUTION:A catalyst with precious metals deposited thereon for producing high-temp. gas at a plant utilizing said gas obtained by catalytic combustion of fuel is prepared by depositing rare-earth metallic compds. which are converted to oxides by calicination or rare-earth metallic oxides on an inorg. carrier such as alumina, drying, and calcining. Furthermore, a liquid contg. colloidal, precious metallic corpuscles is deposited on the carrier to dry and calcine. As a result, not only catalytic activity is increased, but also the precious metallic corpuscles are distributed only at the neighborhood of the catalytic surface, by which the consuming amount of precious metals is decreased and the lowering of catalytic activity is reduced. Thus, the catalyst having superior durability is obtd.
摘要翻译：目的：提高催化剂的活性，并通过在Inorg上沉积> = 1种稀土金属氧化物和胶体的贵金属微粒来减少昂贵的贵金属的消耗量。载体，构成燃烧催化剂。构成：沉积有贵金属的催化剂用于生产高温。利用通过燃料的催化燃烧获得的所述气体在工厂的气体通过沉积稀土金属化合物来制备。它们通过在ororg上的煅烧或稀土金属氧化物转化为氧化物。载体如氧化铝，干燥和煅烧。另外，胶体，贵金属微粒沉积在载体上进行干燥和煅烧。结果，不仅催化活性增加，而且贵金属微粒仅分布在催化剂表面附近，贵金属的消耗量降低，催化活性降低。因此，具有优异的耐久性的催化剂得以实现。

2. 发明专利

JPS58154637A DEVICE FOR PREVENTING REVOLUTION OF STATIC PRESSURE JOINT 失效
公开(公告)号：JPS58154637A
公开(公告)日：1983-09-14
申请号：JP3071183
申请日：1983-02-28
申请人： HITACHI LTD
发明人： KATOU AKIRA , YATOU JIYUNICHI
IPC分类号： G01M7/02 , F16D1/02 , G01M7/04
摘要： PURPOSE:To reduce friction and to prevent the waveform of excited acceleration from being disordered, by using a roller 14 for a part which is in contact with the side of a bracket and reducing the impact at the time of collision by a spring member. CONSTITUTION:When a vibrating table 2 is moved in the X direction, a fork 6a of a static pressure joint 6 on the vertical exciting machine 4 side is moved in the rectangular direction to a paper surface. A roll 14 of a revolution preventing device 8 rotates and moves along the side of a bracket 6b while suppressing the revolution of the bracket 6b. The revolution preventing device 8 guides the bracket 6b smoothly by the revolution of the roll 14. When the rotating direction of the bracket 6b is changed, the bracket 6b collides with the revolution preventing device 8, but the impact is reduced by the spring member 15.

3. 发明专利

JPS5648239A ADSORBENT 失效
公开(公告)号：JPS5648239A
公开(公告)日：1981-05-01
申请号：JP12318579
申请日：1979-09-27
申请人： HITACHI LTD
发明人： TAKEUCHI SEIJI , MATSUDA SHINPEI , MORI TOSHIKATSU , KATOU AKIRA , KUMAGAI TERUO , TAKEUCHI MASAHITO , YAMASHITA HISAO
IPC分类号： C02F1/28 , B01J20/02 , B01J23/42 , B01J23/44 , B01J23/72 , B01J23/74 , B01J23/745 , C02F1/70
摘要： PURPOSE:To ensure a conversion of NO 3 collected through the selective adsorption into an activated material with a contact reduction, by changing the adsorbent of the nitric acid ion in the solution into a specified inorganic compound carrier which carries the specified metal. CONSTITUTION:One or more kinds of the metal ions of the palladium, platinum, copper and iron are carried on the porous inorganic compound carrier composed of the alumina or titania. And then the metal is deposited onto the carrier through the heat reduction to obtain the absorbent. About >=0.5wt% of the whole absorbent is sufficient for the metal quantity to be carried. A proper amount of this absorbent is added into the solution and then standing it for about 1 or 2 hours at a room temperature -50 deg.C to carry out the adsorption. Then the hydrogen gas is allowed to pass into the solution of about 1l/min to carry out the reduction. As a result, the adsorbed NO 3 can be converted into more activated material such as NH 4 or the like.

4. 发明专利

JPS5631719A HOUSEHOLD FLOUR SIEVING DEVICE 失效
公开(公告)号：JPS5631719A
公开(公告)日：1981-03-31
申请号：JP10724279
申请日：1979-08-24
申请人： HITACHI LTD
发明人： HATANO ISAMU , KATOU AKIRA
IPC分类号： A47J43/04 , A47J43/22

5. 发明专利

JPS5626535A TREATMENT OF WASTE GAS 失效
公开(公告)号：JPS5626535A
公开(公告)日：1981-03-14
申请号：JP10028879
申请日：1979-08-08
申请人： BABCOCK HITACHI KK , HITACHI LTD
发明人： KATOU AKIRA , KAMO YUUICHI , UNO SHIGEO , IMAHASHI JINICHI , MATSUDA SHINPEI , NAKASHIMA FUMITO , KURODA HIROSHI
IPC分类号： B01D53/50 , B01D53/34 , B01D53/60 , B01D53/74 , B01D53/81 , B01J20/06
摘要： PURPOSE:To perform denitrification of waste gas (or exhaust gas) effectively while preventing formation of ammonium sulfate compound by a procedure in which ammonia is added to the waste gas containing NOx and SOx to remove NOx to remove NOx and then the waste gas is brought into contact with a sulfur trioxide adsorbent. CONSTITUTION:Ammonia is added to the waste gas containing nitrogen oxides and sulfur oxides and the waste gas is brought into contact with the catalyst to remove nitrogen oxides. Then, the waste gas is brought into contact with a sulfur trioxide adsorbent composed of titanium oxide, iron oxide and/or copper oxide at 150- 350 deg.C to selectively adsorb sulfur trioxide and sulfuric acid mists on the adsorbent. Thus, the denitrification of waste gas can be effectively performed without the formation of ammonium sulfate compound.

6. 发明专利

JPS55167028A TREATMENT OF WASTE GAS CONTAINING NITROGEN OXIDE 失效
公开(公告)号：JPS55167028A
公开(公告)日：1980-12-26
申请号：JP7470679
申请日：1979-06-15
申请人： BABCOCK HITACHI KK , HITACHI LTD
发明人： OKADA HIDEO , TAKEUCHI MASAHITO , UNO SHIGEO , IMAHASHI JINICHI , KAMO YUUICHI , KATOU AKIRA , MATSUDA SHINPEI , NAKASHIMA FUMITO
IPC分类号： B01D53/94 , B01J23/34
摘要： PURPOSE:To make nitrogen oxides harmless by effective reduction for a long period of time without causing any secondary pollution by adding a specific ratio of ammonia to nitrogen oxides present in a waste gas in the presence of a manganese oxide-silica-alumina catalyst with a specific composition. CONSTITUTION:In the denitrification of a waste gas containing nitrogen oxides by an ammonia reduction method, 0.5-2mol ammonia is added to the waste gas on the basis of 1mol nitrogen oxide and then the waste gas is brought into contact with a manganese oxide-silica-alumina catalyst of an SiO2/(SiO2+Al2O)3 ratio of 0.95-0.5, containing 5-30wt% manganese oxide, at 500-700 deg.C. Thus, the nitrogen oxides present in the waste gas can be removed effectively for a long period of time without causing any secondary pollution because of the proper amount of ammonia to be added.

7. 发明专利

JPS55162350A CATALYST FOR REDUCING SUBSTANCE IN AQUEOUS SOLUTION 失效
公开(公告)号：JPS55162350A
公开(公告)日：1980-12-17
申请号：JP7012079
申请日：1979-06-06
申请人： HITACHI LTD
发明人： TAKEUCHI SEIJI , MORI TOSHIKATSU , MATSUDA SHINPEI , KUMAGAI TERUO , KATOU AKIRA , TAKEUCHI MASAHITO , YAMASHITA HISAO
IPC分类号： C07B31/00 , B01J31/06 , B01J33/00 , B01J35/10 , C07C67/00
摘要： PURPOSE:To promote the reducing reaction by a method wherein, in case of reducing substances within an aqueous solution by a reactive gas, a catalitic component and a water repellent agent are coexisted with catalyst to be used to supply a gas component and dissolved substances to a surface of said catalyst together. CONSTITUTION:In case of reducing ions or molecules within an aqueous solution by using a reducing gas such as hydrogen or carbon monoxide, a catalyst coexisting catalitic component and a water repellent agent such as a dispersion of polytetrafluoroethylene or polyethylene together is used. Thereby, a gas component and dissolved substances within an aqueous solution are easily supplied to a catalyst surface and reducing reaction is rapidly progressed at a catalyst activating point.

8. 发明专利

JPS5573331A TREATMENT OF EXHAUST GAS WHICH CONTAINS NITROGEN OXIDE 失效
公开(公告)号：JPS5573331A
公开(公告)日：1980-06-03
申请号：JP14656578
申请日：1978-11-29
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： TAKEUCHI MASAHITO , MATSUDA SHINPEI , KATOU AKIRA , OKADA HIDEO , NAKASHIMA FUMITO
IPC分类号： B01D53/94 , B01J23/40
摘要： PURPOSE:To reduce and remove the nitrogen oxides in a low temperature range efficiently by a mechanism wherein an exhaust gas which contains the nitrogen oxides is mixed with a reducing agent and thereafter is contacted with a titanium dioxide-platinum group metal catalyst. CONSTITUTION:As a reducing catalyst of the nitrogen oxides, a catalyst which contains a titanium oxide and a platinum group metal such as platinum, palladium or the like at a concentration of about 0.1-0.5% by weight of the said titanium dioxide is used. An exhaust gas containing nitrogen oxides, especially nitrogen oxides and sulfur oxides, is mixed with a reducing agent such as ammonia or the like and thereafter heated under the presence of this catalyst to about 150-350 deg.C. Thereby, the nitrogen oxides is removed at high efficiency even if in a low temperature range and this catalyst has an excellent durability against sulfur oxides.

9. 发明专利

JPS5527021A TREATMENT OF WASTE GAS 失效
公开(公告)号：JPS5527021A
公开(公告)日：1980-02-26
申请号：JP9868078
申请日：1978-08-15
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KATOU AKIRA , TAKEUCHI SEIJI , KAMO YUUICHI , UNO SHIGEO , IMAHASHI JINICHI , MATSUDA SHINPEI , NAKASHIMA FUMITO
IPC分类号： B01D53/50 , B01D53/34 , B01D53/81 , B01D53/94 , B01J20/06 , B01J20/08
摘要： PURPOSE:To remove nitrogen oxides stably at a relatively lower temperature while maintaining the activity of a catalyst by removing selectively sulfer trioxide from waste gas containing nitrogen oxides and sulfer oxides, and then catalytically reducing the waste gas with ammonia. CONSTITUTION:Sulfer trioxide is selectively removed at a temperature of from 200 to 350 deg.C from waste gas containing nitrogen oxides and sulfer oxides by using, as an absorbent, an alkali metal or alkaline earth metal oxide such as calcium oxide, etc. or iron oxide. Then, the resulting gas is reduced catalytically with ammonia at a temperature of from 200 to 350 deg.C. When sulfer trioxide is previously removed, subsequently the catalytic reduction of the waste gas with ammonia can be carried out at a relatively lower temperature, and the activity of the catalyst and the removal rate of nitrogen oxides can be maintained stably.

10. 发明专利

JPS558827A COMBUSTING OF COMBUSTION COMPONENT IN GAS 失效
公开(公告)号：JPS558827A
公开(公告)日：1980-01-22
申请号：JP8098278
申请日：1978-07-05
申请人： HITACHI LTD
发明人： KAMO YUUICHI , MATSUDA SHINPEI , KATOU AKIRA , TAKEUCHI MASAHITO , UNO SHIGEO , NAKASHIMA FUMITO
IPC分类号： B01D53/94 , B01J23/40 , F23G7/07
摘要： PURPOSE:To combust fuel component, without causing catalyst activity deterioration due to sulfur oxide, gas containing one or more of H2, CO, hydrocarbon is contacted with platinum group metal catalyst carried by titanium oxide under oxidizing agent at a specified temperature. CONSTITUTION:A sulfur oxide containing gas that includes one or more of H2, CO, and hydrocarbon as fuel component is oxidized and combusted by contacting with platinum group metal catalyst carried by titanium oxide under an oxidizing agent at a temperature below 800 deg.C. For example, a titanium oxide catalyst carrying 0.5 wt% of Pt and a gas containing SO2 1000ppm, SO3 50ppm, CO 5000 ppm, and O2 2% are contacted under a condition of gas volume velocity of 10000h , and at 300 deg.C, providing CO oxidation ratio of greater than 95%. Such catalyst, as comprising a highly active component and titanium oxide resistant to sulfur oxides, enables to maintain a high catalytic activity for long periods.

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