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    • 2. 发明授权
    • Electrically-heated combustion catalyst structure and method for
start-up of a gas turbine using same
    • 电加热燃烧催化剂结构及使用其的燃气轮机起动方法
    • US6109018A
    • 2000-08-29
    • US688075
    • 1996-07-26
    • Thomas Rostrup-NielsenRalph A. Dalla BettaToru ShojiScott A. MagnoDavid K. Yee
    • Thomas Rostrup-NielsenRalph A. Dalla BettaToru ShojiScott A. MagnoDavid K. Yee
    • F01N3/20F01N3/28F23C13/00F23R3/40F02C7/26
    • F23R3/40F01N3/2013F01N3/2026F01N3/281F02C7/26F23C13/00F23C13/02F01N2330/323F01N2610/03F05D2220/76F05D2260/85F23D2206/10Y02T10/26
    • This invention relates to an electrically-heated catalyst (EHC) and a start-up method of a gas turbine engine for combusting a hydrocarbonaceous fuel/oxygen-containing gas mixture using this electrically-heated catalyst. The catalytic structure is electrically heated to a predetermined temperature prior to start up of the turbine so as to reduce emissions during the start-up of the system. The EHC unit is a stacked or spirally wound layering of flat and corrugated thin metal foils which forms a plurality of axially-extending, longitudinal channels. The channels are preferably coated on one surface with a catalytic material, leaving the other surface free from the reaction to act as a heat sink, making the design an IHE (integral heat exchange) catalytic unit. The preferred embodiment of the EHC has electrodes outside of the fuel/oxygen-containing mixture stream, and uses electrical power having a predetermined voltage in the range of 100 to 200 volts to heat the unit. A method for using the EHC in the start-up of a gas turbine is also disclosed wherein an electrical power is applied to heat the EHC a predetermined temperature prior to the fuel/oxygen-containing mixture being introduced and may be left on for a certain period of time after the introduction of the fuel/oxygen-containing mixture. The EHC may be maintained at the desired predetermined temperature by modulating the applied voltage. The electrical power is terminated when any one of several conditions are met including when the heat of the catalytic reaction is sufficient to maintain the catalyst at its steady-state condition or when a certain period of time has elapsed.
    • 本发明涉及使用该电加热催化剂燃烧含烃燃料/含氧气体混合物的燃气涡轮发动机的电加热催化剂(EHC)和起动方法。 催化结构在涡轮启动之前被电加热至预定温度,以便在系统启动期间减少排放。 EHC单元是形成多个沿轴向延伸的纵向通道的平坦且波浪形的薄金属箔的层叠或螺旋卷绕的层。 通道优选在一个表面上用催化材料涂布,使另一个表面没有反应作为散热器,使得设计成为IHE(整体式热交换)催化单元。 EHC的优选实施例具有位于燃料/含氧混合物流之外的电极,并且使用具有在100至200伏特范围内的预定电压的电力来加热该单元。 还公开了在燃气轮机起动中使用EHC的方法,其中在引入燃料/含氧混合物之前施加电功率以将EHC加热到预定温度,并且可以保持一定的 在引入燃料/含氧混合物之后的时间段。 可以通过调制所施加的电压将EHC保持在所需的预定温度。 当满足几个条件中的任何一个时,电力终止,包括当催化反应的热量足以使催化剂保持在其稳定状态或当经过一定时间段时。
    • 6. 发明授权
    • Process for producing oxide-dispersion strengthened platinum material
    • 生产氧化物分散强化铂材料的方法
    • US06841121B2
    • 2005-01-11
    • US10019487
    • 2001-06-15
    • Toru ShojiSoichi HitomiYoshikazu TakagiYoshinobu Watanabe
    • Toru ShojiSoichi HitomiYoshikazu TakagiYoshinobu Watanabe
    • C22B3/44B22F1/00B22F1/02B22F3/24C03B5/167C22B11/00C22C1/00C22C1/05C22C1/10C22C5/04C22C32/00
    • C03B5/1675B22F2998/10C03B5/1672C22C1/1026C22C32/0021B22F3/10B22F3/17
    • This invention aims to provide a process for producing an oxide-dispersion strengthened platinum material which allows zirconium oxide to be more finely dispersed in a platinum material, and to further improve creep strength in an oxide-dispersion strengthened platinum material. This invention provides a process for producing an oxide-dispersion strengthened platinum material where zirconium oxide is finely dispersed in platinum, wherein powdered platinum is poured into water to prepare a platinum suspension; a zirconium nitrate solution and an urea solution are added in the platinum suspension for adjusting the suspension to a given pH to precipitate zirconium hydroxide and thus to form a zirconium hydroxide carrying platinum; the zirconium hydroxide carrying platinum is collected, which is then formed into a molding; the molding is sintered and forged under the conditions whereby secondary recrystallization growth in a platinum crystal proceeds, to form a platinum ingot; and the platinum ingot is cold-rolled in a processing rate of at least 70% and then the product is thermally recrystallized.
    • 本发明的目的在于提供一种氧化物分散强化的铂材料的制造方法,其使氧化锆更加细化分散在铂材料中,进一步提高氧化物分散强化的铂材料的蠕变强度。 本发明提供一种氧化物分散强化铂材料的制造方法,其中氧化锆被精细地分散在铂中,其中将粉末状铂注入水中以制备铂悬浮液; 在铂悬浮液中加入硝酸锆溶液和尿素溶液以将悬浮液调节到给定的pH以沉淀氢氧化锆,从而形成携带铂的氢氧化锆; 收集载有铂的氢氧化锆,然后将其形成成型品; 在铂晶体中进行二次再结晶生长的条件下烧成并锻造,形成铂锭; 并将铂锭以至少70%的加工速率进行冷轧,然后将产物热重结晶。