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    • 7. 发明申请
    • Process and plant for producing metal oxide from metal compounds
    • 用于从金属化合物生产金属氧化物的工艺和设备
    • US20060263292A1
    • 2006-11-23
    • US10540071
    • 2003-12-13
    • Martin HirschWerner StockhausenMichael Stroder
    • Martin HirschWerner StockhausenMichael Stroder
    • C01F7/02F27B15/00
    • B01J8/384B01J8/0025B01J8/1827B01J8/1845B01J8/1863B01J8/1872C01B13/324C01F7/445F23C10/12F23C10/14Y02P20/129
    • The present invention relates to a process for producing metal oxide from metal compounds, in particular metal hydroxide or metal carbonate, in which the metal compound is conveyed into a reactor (25) with fluidized bed, heated there to a temperature of 650 15 to 1150° C. by combustion of fuel, and metal oxide is generated, as well as to a corre-sponding plant. To improve the utilization of energy, it is proposed to introduce a first gas or gas mixture from below through a gas supply tube (26) into a mixing chamber (20) of the reactor (25), the gas supply tube (26) being at least partly surrounded by a stationary annular fluidized bed (27) which is fluidized by supplying fluidizing gas, and 20 to adjust the gas velocities of the first gas or gas mixture and of the fluidizing gas for the annular fluidized bed (27) such that the Particle-Froude numbers in the gas supply tube (26) lie between 1 and 100, in the annular fluidized bed (27) between 0.02 and 2, and in the mixing chamber (20) between 0.3 and 30.
    • 本发明涉及一种由金属化合物,特别是金属氢氧化物或金属碳酸盐生产金属氧化物的方法,其中金属化合物被输送到具有流化床的反应器(25)中,加热到650-1510℃的温度 通过燃料燃烧产生金属氧化物,以及相应的工厂。 为了提高能量的利用率,提出从下方将第一气体或气体混合物从气体供给管(26)引入反应器(25)的混合室(20),气体供给管(26)为 至少部分地由通过供应流化气体流化的固定环形流化床(27)和20来调节第一气体或气体混合物和用于环形流化床(27)的流化气体的气体速度,使得 在环形流化床(27)为0.02和2之间,以及在混合室(20)中,0.3至30之间,气体供应管(26)中的粒子 - 弗劳德数位于1和100之间。
    • 8. 发明授权
    • Process and plant for producing metal oxide from metal compounds
    • 用于从金属化合物生产金属氧化物的工艺和设备
    • US07662351B2
    • 2010-02-16
    • US10540071
    • 2003-12-13
    • Martin HirschWerner StockhausenMichael Ströder
    • Martin HirschWerner StockhausenMichael Ströder
    • C01F1/00F27B15/00F27B15/12F27B15/18B22F1/00F27B15/08F27B15/14F27B15/16
    • B01J8/384B01J8/0025B01J8/1827B01J8/1845B01J8/1863B01J8/1872C01B13/324C01F7/445F23C10/12F23C10/14Y02P20/129
    • The present invention relates to a process for producing metal oxide from metal compounds, in particular metal hydroxide or metal carbonate, in which the metal compound is conveyed into a reactor (25) with fluidized bed, heated there to a temperature of 650 15 to 1150° C. by combustion of fuel, and metal oxide is generated, as well as to a corresponding plant. To improve the utilization of energy, it is proposed to introduce a first gas or gas mixture from below through a gas supply tube (26) into a mixing chamber (20) of the reactor (25), the gas supply tube (26) being at least partly surrounded by a stationary annular fluidized bed (27) which is fluidized by supplying fluidizing gas, and 20 to adjust the gas velocities of the first gas or gas mixture and of the fluidizing gas for the annular fluidized bed (27) such that the Particle-Froude numbers in the gas supply tube (26) lie between 1 and 100, in the annular fluidized bed (27) between 0.02 and 2, and in the mixing chamber (20) between 0.3 and 30.
    • 本发明涉及一种由金属化合物,特别是金属氢氧化物或金属碳酸盐生产金属氧化物的方法,其中金属化合物被输送到具有流化床的反应器(25)中,加热到650-1510℃的温度 通过燃料燃烧产生金属氧化物,以及生成相应的工厂。 为了提高能量的利用率,提出从下方将第一气体或气体混合物从气体供给管(26)引入反应器(25)的混合室(20),气体供给管(26)为 至少部分地由通过供应流化气体流化的固定环形流化床(27)和20来调节第一气体或气体混合物和用于环形流化床(27)的流化气体的气体速度,使得 在环形流化床(27)为0.02和2之间,以及在混合室(20)中,0.3至30之间,气体供应管(26)中的粒子 - 弗劳德数位于1和100之间。
    • 9. 发明授权
    • Fluidized bed process for producing alumina from aluminum hydroxide
    • 用于由氢氧化铝生产氧化铝的流化床方法
    • US6015539A
    • 2000-01-18
    • US68758
    • 1998-09-03
    • Hans Werner SchmidtMartin RahnWerner StockhausenDietrich WernerMartin Hirsch
    • Hans Werner SchmidtMartin RahnWerner StockhausenDietrich WernerMartin Hirsch
    • B01J8/18C01F7/44C01F7/02
    • C01F7/445
    • A process is disclosed for preparing anhydrous alumina from aluminum hydroxide which comprises feeding aluminum hydroxide into a first suspension preheater and partially dehydrating the aluminum hydroxide with a hot exhaust gas, transporting the partially dehydrated aluminum hydroxide with said exhaust gas to a first separating means and separately withdrawing the exhaust gas and the partially dehydrated aluminum hydroxide, and dividing the partially dehydrated aluminum hydroxide into a first and second partial stream of solids. The process uses a circulating fluidized bed comprising a fluidized bed reactor, a recycle separator connected to the upper portion of said fluidized bed reactor, and a return line for leading solids from said recycle separator to the lower portion of said fluidized bed reactor. The second partial stream of solids is fed into a second suspension preheater and contacted with hot exhaust gas from the recycle separator. The solids and the exhaust gas are transported to a second separating means and an exhaust gas stream is withdrawn and fed into the first suspension preheater. A dehydrated solids stream is fed into the fluidized bed reactor and the reactor temperature is adjusted to 850 to 1000.degree. C. A third partial stream of solids is mixed with the first partial stream of solids to form a hot solids mixture. The hot solids mixture is cooled in at least one fluidized bed cooler and then is fed into the fluidized bed reactor. The hot solids mixture is cooled in at least one fluidized bed cooler.
    • PCT No.PCT / EP96 / 04764 Sec。 371日期:1998年9月3日 102(e)1998年9月3日PCT PCT 1996年11月2日PCT公布。 公开号WO97 / 18165 日期1997年5月22日公开了一种从氢氧化铝制备无水氧化铝的方法,其包括将氢氧化铝进料到第一悬浮预热器中,并用热废气部分使氢氧化铝脱水,将部分脱水的氢氧化铝与所述排气一起输送到第一 分离装置,分别排出废气和部分脱水的氢氧化铝,将部分脱水的氢氧化铝分成第一和第二部分固体物流。 该方法使用循环流化床,其包括流化床反应器,连接到所述流化床反应器的上部的循环分离器和用于将固体从所述再循环分离器引导到所述流化床反应器的下部的返回管线。 将第二部分固体物流进入第二悬浮预热器并与来自再循环分离器的热废气接触。 固体和废气被输送到第二分离装置,废气流被排出并进入第一悬浮预热器。 将脱水的固体物流进料到流化床反应器中,并将反应器温度调节至850至1000℃。固体的第三部分流与第一部分固体物流混合以形成热固体混合物。 将热固体混合物在至少一个流化床冷却器中冷却,然后进料到流化床反应器中。 热固体混合物在至少一个流化床冷却器中冷却。