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1. 发明专利

JPH0726271A PRODUCTION OF SNG 失效
公开(公告)号：JPH0726271A
公开(公告)日：1995-01-27
申请号：JP15506593
申请日：1993-06-25
申请人： OSAKA GAS CO LTD , OSAKA GAS ENG KK
发明人： OKADA OSAMU , OOKA ISAMI , URUSHIZAKI YASUMASA
IPC分类号： C01B3/38 , C10G11/20 , C10L3/06
摘要： PURPOSE:To provide the subject production process which is simpler than the conventional one, has low building cost and can be easily and continuously operated and by which a high thermal efficiency can be attained, and the start and stop of operation can easily be performed. CONSTITUTION:A process for producing SNG from low-boiling hydrocarbons as a feedstock, which process comprises subjecting the feedstock and steam to a reforming reaction in an adiabatic reformer, subjecting all or part of the reformed gas to a methanization reaction in the subsequent heat exchanger type reactor and using the formed heat of reaction to preheat the feedstock and the steam, is provided. The above-descrived process, wherein part of the reformed gas leaving the adiabatic reformer is used as a hydrogen source for hydrodesulfurizing the feedstock low-boiling hydrocarbons, is also provided.

2. 发明专利

JP2001183324A GAS DETECTING ELEMENT, MANUFACTURING METHOD FOR THE SAME AND GAS SENSOR 失效
公开(公告)号：JP2001183324A
公开(公告)日：2001-07-06
申请号：JP36499499
申请日：1999-12-22
申请人： MIKUNI KOGYO KK , OSAKA GAS CO LTD
发明人： TAKAHASHI KENICHIRO , HASUMI KAZUHISA , OKADA OSAMU , YANAGIDA HIROAKI
IPC分类号： G01N27/12
摘要： PROBLEM TO BE SOLVED: To provide a carbon monoxide gas sensor capable of detecting CO gas of a low concentration with small influence of a disturbing gas. SOLUTION: The gas detecting element is constituted by adding Cr or a Cr compound as an additive to a gas sensitive material powder containing a copper oxide CuO as a main component. Thus, the detecting sensitivity of the CO gas of the concentration of several tens to several hundreds of ppm is improved. On the contrary, the detecting sensitivity of H2 gas is arranged to be lowered.

3. 发明专利

JP2000338072A CARBON MONOXIDE SENSOR 失效
公开(公告)号：JP2000338072A
公开(公告)日：2000-12-08
申请号：JP14670899
申请日：1999-05-26
申请人： MIKUNI KOGYO KK , YANAGIDA HIROAKI , OSAKA GAS CO LTD
发明人： SUGANO KOJI , HASUMI KAZUHISA , YANAGIDA HIROAKI , OKADA OSAMU
IPC分类号： G01N27/12
摘要： PROBLEM TO BE SOLVED: To selectively and safely detect CO gas by disposing a filter absorbing NO, NO2 and SO2 and permitting carbon monoxide to pass to a passage for introducing gas to be detected into a detection element. SOLUTION: The surface of a detection element 1 is covered with a filter housing 12. An opening 13 is provided to the top part of the housing 12 and gas to be detected is introduced from the opening 13 to transmit through filters 7, 8 of a two-layered stucture while diffusing throughout them to arrive at the surface of the element 1. At this time, NO, NO2 and SO2 are adsorbed by activated carbon or reacted with alkali metal carbonate along with moisture contained in the gas to be detected to be reduced in the amt. arriving at the surface of the detection element 1. Contrarily, carbon monoxide is slight in the amt. adsorbed by activated carbon and not reacted with alkali metal carbonate. Therefore, the influence of NO, NO2, SO2 or the like on the detection element 1 is reduced and the detection sensitivity to carbon monoxide thereof is stabilized and carbon monoxide can be selectively detcted.

4. 发明专利

JP2000292400A GAS SENSOR AND ITS MANUFACTURE 失效
公开(公告)号：JP2000292400A
公开(公告)日：2000-10-20
申请号：JP10325399
申请日：1999-04-09
申请人： MIKUNI KOGYO KK , YANAGIDA HIROAKI , OSAKA GAS CO LTD
发明人： HORIUCHI HIDEYUKI , HASUMI KAZUHISA , YANAGIDA HIROAKI , OKADA OSAMU
IPC分类号： G01N27/12
摘要： PROBLEM TO BE SOLVED: To remove influence of coexisting gas, such as NO or the like, included in gas to be detected, and to improve selectively detection sensitivity relative to carbon monoxide, in a gas sensor having a p-type metal oxide semiconductor mainly composed of copper oxide as a detecting element. SOLUTION: Sodium sulfate is added to a composition of a ptype metal oxide semiconductor 11 as a sodium compound. An addition rate of sodium sulfate is preferably 0.5-20 wt.% relative to copper oxide. And, a compound having one or more constitutive elements selected from B, Mg, Al, Si, P, K, Ca, Ti, V, Zn, Y, Mo, Ba, La, Ce, Pr, Nd, Sm, W, Ta, Pt, Au, Pb, Bi, is preferably included as an auxiliary additive other than the sodium compound.

5. 发明专利

JPH11342336A CATALYST A FOR REMOVAL OF NITROGEN OXIDES BY DECOMPOSITION AND METHOD 失效
公开(公告)号：JPH11342336A
公开(公告)日：1999-12-14
申请号：JP15172098
申请日：1998-06-01
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , SEIBU GAS CO LTD
发明人： UCHIDA HIROSHI , YASUDA ISAMU , YOKOI TAIJI , OKADA OSAMU , KAKUMOTO TERUMITSU , NAKAYAMA TOSHIRO , KURUSU TOMOE , OTSUKA HIROFUMI , NAKAMURA YASUHISA , ISHIKAWA HIDEMASA , KAWASAKI HARUJI
IPC分类号： B01D53/94 , B01J23/84 , B01J23/847
摘要： PROBLEM TO BE SOLVED: To provide a practical, highly active decomposition catalyst capable of removing NOx , especially, NO contained in exhaust gases originated from all combus tion apparatus, regardless of fixed generation sources or moving generation sources or derived from fuels or combustion air by directly decomposing them at high temp. without reducing agents, and to provide the practical method for NOx removal using the catalyst for treating the exhaust gas containing oxygen and steam. SOLUTION: The decomposition catalyst containing, as a catalytically active component, at least one metal complex oxide of the composition formula AM1-x Ex O3+-z (A is an alkaline earth metal; M is an element of the iron group elements; E is a metal selected from vanadium group metals; 0

6. 发明专利

JPH11151440A CATALYST FOR DECOMPOSING AND REMOVING NITROGEN OXIDES AND DECOMPOSING AND REMOVING METHOD OF NITROGEN OXIDES 失效
公开(公告)号：JPH11151440A
公开(公告)日：1999-06-08
申请号：JP409498
申请日：1998-01-12
申请人： TOKYO GAS CO LTD , OSAKA GAS CO LTD , TOHO GAS KK , SEIBU GAS CO LTD
发明人： UCHIDA HIROSHI , YOKOI TAIJI , OKADA OSAMU , KAKUMOTO TERUMITSU , NAKAYAMA TOSHIRO , KURUSU TOMOE , OTSUKA HIROFUMI , NAKAMURA YASUHISA , ISHIKAWA HIDEMASA , KAWASAKI HARUJI
IPC分类号： B01D53/94 , B01J21/06 , B01J23/58 , B01J23/78
摘要： PROBLEM TO BE SOLVED: To produce a high-active catalyst capable of directly decomposing and removing the NO in a waste gas without a reducing agent by using the catalyst in which a composition of one kind metal composite oxide being a catalytic active ingredient is expressed by a specified formula and also one kind crystal structure has a SrTiO3 perovskite structure. SOLUTION: The catalyst capable of directly decomposing and removing the nitrogen monoxide without the reducing agent is produced by using the catalyst in which the composition of one kind metal composite oxide being the catalytic active ingredient of the nitrogen oxides decomposition catalyst expressed by a general formula AB1- XMx O3+- X. In the formula, A is one kind metal selected from alkaline earth element, B is one kind metal selected from titanium group element, M is one kind metal selected from iron group, platinum group or copper group element, 0

7. 发明专利

JP2538272B2 失效
公开(公告)号：JP2538272B2
公开(公告)日：1996-09-25
申请号：JP22339787
申请日：1987-09-07
申请人： OSAKA GAS CO LTD
发明人： ITSUHONMATSU MASAMICHI , OKADA OSAMU
IPC分类号： G01N27/12 , G01V1/00

8. 发明专利

JPH06258270A GAS SENSOR 失效
公开(公告)号：JPH06258270A
公开(公告)日：1994-09-16
申请号：JP4128593
申请日：1993-03-02
申请人： MIKUNI KOGYO KK , YANAGIDA HIROAKI , OSAKA GAS CO LTD
发明人： HASUMI KAZUHISA , NAGANO KENTARO , KAMIYAMA SHUICHI , YANAGIDA HIROAKI , OKADA OSAMU
IPC分类号： G01N27/12
摘要： PURPOSE:To provide a gas sensor formed by using a ceramic semiconductor by connecting electrodes to take out a change in an electric characteristic directly to a (p) type member formed of a (p) type semiconductor mainly composed of CuO. CONSTITUTION:A (p) type member 1 formed of a (p) type semiconductor mainly composed of CuO and two comb shape electrode 2 and 3 to take out a change in an electric characteristic are formed on a board 4. Both comb shape electrodes 2 and 3 are connected directly to the (p) type member 1. The (p) type member 1 is a thick film, and is formed by baking a paste-like material after the paste-like material formed by using CuO particles as a main solid component is printed so as to contact with the comb shape electrodes 2 and 3. When it is operated, constant voltage is impressed between the comb shape electrodes 2 and 3, and an electric current change caused by the existence of gas to be inspected is detected. In this gas sensor, detecting sensitivity to Co changes sharply from an almost no condition to a condition higher than detecting sensitivity to H2 or Ca3H8, so that selective detection of the Co becomes possible.

9. 发明专利

JPH0643978B2 失效
公开(公告)号：JPH0643978B2
公开(公告)日：1994-06-08
申请号：JP15258586
申请日：1986-06-27
申请人： OSAKA GAS CO LTD
发明人： IPPONMATSU MASAMICHI , MATSUMOTO TAKESHI , YAKUSHIJI SHINGO , OKADA OSAMU
IPC分类号： G01N27/12

10. 发明专利

JPH05212246A METHOD FOR PURIFYING NITROGEN OXIDE IN WASTE GAS 失效
公开(公告)号：JPH05212246A
公开(公告)日：1993-08-24
申请号：JP25380692
申请日：1992-08-27
申请人： OSAKA GAS CO LTD
发明人： TABATA TAKESHI , OKADA OSAMU , KOUKETSU MIKAKO , AOYANAGI YUSUKE , FUJITA HIROKI
IPC分类号： B01D53/94 , B01J29/035 , B01J29/24 , B01J29/76 , F01N3/08
摘要： PURPOSE:To efficiently purify nitrogen oxide in waste combustion gas. CONSTITUTION:Nitrogen oxide in waste combustion gas is selectively reduced and purified by hydrocarbon under the presence of oxygen by using a selective reduction catalyst. In the method, the selective reduction catalytic layer is divided into >=2 in the flow direction of waste gas. Paraffin of >=3C or olefin of >=2C is introduced into the front flow sides of the respective catalytic layers as a selective reducing agent. Thereby the hydrocarbon being the selective reducing agent is made to low concentration with high denitrification effect in the whole region of the catalytic layer. The loadings of hydrocarbon are decreased and the degree of denitrification is enhanced.

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