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    • 25. 发明授权
    • Fixation of elemental mercury present in spent molecular sieve desiccant
for disposal
    • 固定在废分子筛干燥剂中用于处置的元素汞
    • US5173286A
    • 1992-12-22
    • US732690
    • 1991-07-19
    • Costandi A. Audeh
    • Costandi A. Audeh
    • A62D3/00A62D3/30A62D3/33A62D3/36A62D3/38A62D101/24A62D101/43B01J20/18B09B3/00
    • A62D3/38A62D3/33B01J20/186B09B3/00B09B3/0025A62D2101/43A62D2203/04
    • A process for fixing elemental mercury (Hg.degree.) in a spent molecular sieve desiccant is disclosed. The process includes isolating gspent molecular sieve desiccant containing elemental mercury, and contacting the spent desiccant in a dilute aqueous solution of an alkaline metal salt. The reaction traps the mercury within the spent desiccant as an insoluble heavy metal salt. The alkaline metal salt can include, for example, sodium thiosulfate (Na.sub.2 S.sub.2 O.sub.3), sodium polysulfide (Na.sub.2 S.sub.x), or potassium peroxomonosulfate (KHSO.sub.5). The reaction with any of these aqueous solutions acts to fix the elemental mercury (Hg.degree.) as a mercury compound within the solid desiccant. If sodium thiosulfate or sodium polysulfide is utilized, then the process also includes introducing hydrochloric acid (HCl) in a suitable quantity to liberate sufficient elemental sulfur to react with the elemental mercury (Hg.degree.) to form an HgS salt. The formation of HgS fixes the elemental mercury (Hg.degree.) in the form of a heavy metal salt in the solid desiccant. If, however, an aqueous potassium peroxomonosulfate (KHSO.sub.5) solution is utilized, then HCl is not needed. The aqueous potassium peroxomonosulfate solution is used in a suitable concentration to convert the elemental mercury (Hg.degree.) in the spent desiccant to HgO, so that the elemental mercury (Hg.degree.) is fixed as an insoluble heavy metal oxide in the solid desiccant.
    • 公开了一种在废分子筛干燥剂中固定元素汞(Hg DEG)的方法。 该方法包括分离含有元素汞的分子筛干燥剂,并将废弃的干燥剂与碱性金属盐的稀水溶液接触。 该反应将废水中的汞捕获为不溶性重金属盐。 碱金属盐可以包括例如硫代硫酸钠(Na 2 S 2 O 3),多硫化钠(Na 2 S x)或过硫酸钾(KHSO 5)。 与任何这些水溶液的反应用于将固体干燥剂中的汞化合物的元素汞(Hg DEG)固定。 如果使用硫代硫酸钠或多硫化钠,则该方法还包括引入适量的盐酸(HCl)以释放足够的元素硫以与元素汞(HgO)反应形成HgS盐。 HgS的形成固定在固体干燥剂中的重金属盐形式的元素汞(Hg DEG)。 然而,如果使用了含硫酸钾(KHSO 5)水溶液,则不需要HCl。 以适当的浓度使用硫酸钾水溶液,将废干燥剂中的元素汞(Hg DEG)转化为HgO,使得元素汞(Hg DEG)在固体干燥剂中固定为不溶重金属氧化物。
    • 27. 发明授权
    • Process for preparing an extreme pressure lubricating oil additive
    • 制备极压润滑油添加剂的方法
    • US5062976A
    • 1991-11-05
    • US545003
    • 1990-06-28
    • Costandi A. Audeh
    • Costandi A. Audeh
    • C10M135/04
    • C10M135/04C10M2219/022
    • A process for preparing an oxidized sulfurized isobutylene product having utility as an EP additive. The process comprises the steps of: reacting sulfur monochloride with a stoichiometric excess of isobutylene; reacting the product so produced with an alkali metal monosulfide and free sulfur in an alcohol-water solvent; reacting the product so produced with an aqueous solution containing an alkali metal hydroxide; and reacting the liquid sulfurized isobutylene so produced with a mild oxidizing agent under conditions sufficient to effect the appearance of new infrared frequency bands at 1300 cm.sup.-1 and 1030 cm.sup.-1 indicative of the formation of sulfoxides and sulfones and recovering a liquid oxidized sulfurized isobutylene product which is soluble in a lubricating composition.
    • 一种用作EP添加剂的氧化硫化异丁烯产物的制备方法。 该方法包括以下步骤:使一氯化硫与化学计量过量的异丁烯反应; 使如此生产的产物与醇 - 水溶剂中的碱金属一硫化物和游离硫反应; 使如此制备的产物与含有碱金属氢氧化物的水溶液反应; 并使所生产的液体硫化异丁烯与温和氧化剂在足以在1300cm -1和1030cm -1处出现新的红外频带的条件下反应,表明形成亚砜和砜并回收液体氧化的硫化异丁烯 可溶于润滑组合物的产品。
    • 29. 发明授权
    • Process for removing hydrogen sulfide and mercury from gases
    • 从气体中除去硫化氢和汞的工艺
    • US4786483A
    • 1988-11-22
    • US100869
    • 1987-09-25
    • Costandi A. Audeh
    • Costandi A. Audeh
    • B01D53/14B01D53/52B01D53/64B01D53/34
    • B01D53/1493B01D53/52B01D53/64
    • Disclosed is a sorbent material for removing mercury and hydrogen sulfide from gases. The sorbent is a porous granular material which has been impregnated with a chemical compound capable of converting mercury to the oxide form and simultaneously hydrogen sulfide to elemental sulfur. Sorbent materials include silica, alumina, silica-alumina, molecular sieves, and mixtures of two or more of these. The reactive compound disclosed is an alkali metal peroxomonosulfate salt, for example, potassium peroxomonosulfate. In a variation the gas can be contacted directly with an aqueous solution of the chemical compound such as the alkali peroxomonsolufate salt.
    • 公开了一种用于从气体中去除汞和硫化氢的吸附剂材料。 吸附剂是多孔颗粒材料,其已经浸渍有能够将汞转化为氧化物形式并且同时将硫化氢转化为元素硫的化合物。 吸附剂材料包括二氧化硅,氧化铝,二氧化硅 - 氧化铝,分子筛,以及它们中的两种或更多种的混合物。 所公开的反应性化合物是碱金属过硫酸一铵盐,例如硫酸钾。 在一个变体中,气体可以直接与化学化合物的水溶液例如碱性过氧化脂肪酸盐接触。