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    • 1. 发明授权
    • Process for optimizing the removal of NO.sub.X and SO.sub.X from gases
utilizing lanthanide compounds
    • 利用镧系元素化合物优化从气体中除去NO x和SO x的工艺
    • US5213779A
    • 1993-05-25
    • US738893
    • 1991-08-01
    • D. Alan R. KayWilliam G. WilsonVinod Jalan
    • D. Alan R. KayWilliam G. WilsonVinod Jalan
    • C21C1/02C21C7/064
    • C21C7/064C21C1/02
    • A process for optimizing the removal of nitrogen oxide (NO.sub.x) and sulfur oxide (SO.sub.X) from flue gases is provided in which the flue gases pass over a lanthanide-oxygen-sulfur catalyst. The catalyst has active sites provided on its surface which promote the dissociation of NO.sub.X and receive and entrap oxygen released during the dissociation of the NO.sub.X. While the flue gases pass over the catalyst, a reducing gas contacts the catalyst to reduce the oxygen on the active sites of the catalyst and permit the catalyst to continue to promote the dissociation of the NO.sub.x in the flue gas. If the flue gases contain SO.sub.X, they are then passed over a solid solution having a solvent of a first lanthanide oxide compound which crystallizes in the fluorite habit and a solute of at least one altervalent oxide of a second lanthanide. The SO.sub.X in the flue gases reacts with the solid solution to form a sulfated lanthanide oxide which is removed from the flue gases. The sulfated lanthanide oxide may then be dissociated by raising its temperature to regenerate the lanthanide oxide.
    • 提供了一种优化从烟道气中去除氮氧化物(NOx)和硫氧化物(SOX)的方法,其中烟道气通过镧系元素 - 氧 - 硫催化剂。 该催化剂在其表面上提供了活性位点,其促进NO x的解离并且接收和截留在NOX解离过程中释放的氧。 当烟气通过催化剂时,还原气体与催化剂接触以减少催化剂的活性位上的氧,并允许催化剂继续促进烟道气中的NOx的解离。 如果烟道气含有SOX,则它们然后通过具有第一镧系氧化物化合物的溶剂的固溶体,其结晶为萤石习惯,并且含有至少一种第二镧系元素的交替氧化物的溶质。 烟气中的SOX与固溶体反应形成从烟道气中除去的硫酸化镧系元素氧化物。 然后硫酸化镧系元素氧化物可以通过升高其温度来解离以再生镧系元素氧化物。
    • 3. 发明授权
    • Methods of desulfurizing gases
    • 气体脱硫方法
    • US4714598A
    • 1987-12-22
    • US846272
    • 1986-03-31
    • D. Alan R. KayWilliam G. Wilson
    • D. Alan R. KayWilliam G. Wilson
    • C21C1/02C21C7/064B01D53/36B01J8/00C01B17/00
    • C21C7/064C21C1/02
    • A method for desulfurizing gases in which the sulfur is mainly in the form of hydrogen sulfide by reacting with one of the forms of cerium oxide with the formation of a cerium-oxygen-sulfur compound, which method can be conducted at temperatures as high as the lowest melting point of either the cerium oxides or cerium-oxygen-sulfur compounds formed by the reactions. The method also includes a definition of the temperature necessary for the regeneration of the cerium-oxygen-sulfur compounds back to cerium oxide which is capable of again reacting with the hydrogen sulfide of the gases being desulfurized whereby the emission of sulfur from the combustion of sulfur containing hydrocarbons is reduced to a level below that attainable with any other method when operated at the same high temperatures.
    • 通过与氧化铈中的一种与一种铈 - 氧 - 硫化合物反应,硫主要以硫化氢的形式硫化气体的方法,该方法可以在高达 通过反应形成的氧化铈或铈 - 氧 - 硫化合物的最低熔点。 该方法还包括将铈 - 氧 - 硫化合物再生成氧化铈所需的温度的定义,其能够再次与待脱硫气体的硫化氢反应,从而从硫的燃烧中排出硫 当在相同的高温下操作时,含烃的碳氢化合物被降低至低于任何其他方法可达到的水平。