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    • 32. 发明授权
    • Production of organophosphines
    • 生产有机膦
    • US4073810A
    • 1978-02-14
    • US549172
    • 1975-02-12
    • Klaus HestermannBernd LippsmeierGero Heymer
    • Klaus HestermannBernd LippsmeierGero Heymer
    • B01J21/00C07B61/00C07F9/50C07F9/53C07F9/54
    • C07F9/5086C07F9/54
    • Production of organophosphines of the general formula R.sub.n PH.sub.3-n, in which R stands for identical or different, substituted or unsubstituted alkyl, cycloalkyl or aralkyl groups having from 1 to 18 carbon atoms, preferably from 1 to 4 carbon atoms, more preferably from 1 to 2 carbon atoms, and n stands for a whole number within the range 1 and 3. The compounds are more particularly produced by continuously reacting hydrocarbon halides of the general formula RX, in which R has the meaning given hereinabove and X stands for halogen, especially for chlorine or bromine, with hydrogen phosphide, and primary or secondary organophosphines at temperatures within the range 100.degree. and 600.degree. C. and under pressures of up to 20 atmospheres in contact with a catalyst being placed in a reactor. Gaseous matter issuing from the reactor is cooled and the resulting organophosphonium halides (R.sub.n PH.sub.4-n)X are hydrolyzed in conventional manner to the corresponding organophosphines.
    • 制备通式RnPH3-n的有机膦,其中R代表相同或不同的取代或未取代的具有1至18个碳原子,优选1至4个碳原子的烷基,环烷基或芳烷基,更优选1至 2个碳原子,n表示1和3范围内的整数。化合物更特别地通过连续反应通式RX的卤代烃,其中R具有上文给出的含义,X代表卤素,特别是 对于氯或溴,与磷化氢以及初级或次级有机膦在100℃和600℃的温度范围内以及在与置于反应器中的催化剂接触的情况下在高达20个大气压的压力下进行。 将从反应器排出的气态物质冷却,并将所得的有机鏻卤化物(RnPH4-n)X以常规方式水解成相应的有机膦。
    • 34. 发明授权
    • Continuous process for complete removal or organic impurities from and
complete decolorization of prepurified wet-process phosphoric acid
    • 用于完全去除或有机杂质的连续方法和完全脱湿的湿法磷酸完全脱色
    • US4906445A
    • 1990-03-06
    • US311640
    • 1989-02-16
    • Gunther SchimmelGerhard BettermannGero HeymerFriedrich Kolkmann
    • Gunther SchimmelGerhard BettermannGero HeymerFriedrich Kolkmann
    • C01B25/234C01B25/235C01B25/46
    • C01B25/461C01B25/235
    • A continuous process is indicated for complete removal of organic impurities from and complete decolorization of pre-purified wet-process phosphoric acid which has been purified by an extractive method using an organic solvent, freed from residual hydrofluoric acid by steam stripping and treated with hydrogen peroxide at elevated temperature, which comprises mixing the pre-purified wet-process phosphoric acid and the hydrogen peroxide in a mixing zone at a temperature of from 100.degree. to 200.degree. C., preferably 140.degree. to 160.degree. C., and allowing them to react at this temperature for a further 1 to 4 hours, cooling to from 85.degree. to 90.degree. C. the pre-purified wet-process phosphoric acid treated in this way and pumping it at this temperature with exclusion of air firstly through an activated charcoal bed which has been prepared on the basis of peat and has been steam-activated and has a BET surface area of from 800 to 1000 m.sup.2 /g, and subsequently through a silicon carbide and/or graphite bed while maintaining a pumping rate of less than 0.5 m.sup.3 /h of wet-process phosphoric acid per m.sup.3 of activated charcoal bed.
    • 指示完全除去有机杂质并完全脱色预纯化的湿法磷酸的连续方法,其通过萃取方法使用有机溶剂纯化,通过汽提除去残留的氢氟酸并用过氧化氢处理 在高温下,其包括在预先纯化的湿法磷酸和过氧化氢的混合区中在100至200℃,优选140至160℃的温度下混合,并使它们 在该温度下再反应1至4小时,冷却至85℃至90℃,预纯化的湿法磷酸以此方式处理并在该温度下泵送,首先通过活性炭排除空气 基于泥炭制备并已蒸汽活化并具有800至1000m2 / g的BET表面积的床,随后通过碳化硅和/或石墨b 同时保持每立方米活性炭床的湿法磷酸的泵送速率小于0.5m 3 / h。
    • 39. 发明授权
    • Process for the dearsenification of polyphosphoric acid
    • 多磷酸脱砷方法
    • US4399114A
    • 1983-08-16
    • US402941
    • 1982-07-29
    • Alexander MaurerGero HeymerMarkus Erpenbach
    • Alexander MaurerGero HeymerMarkus Erpenbach
    • C01B25/24C01B25/16
    • C01B25/24
    • The disclosure relates to a process for the continuous dearsenification of polyphosphoric acid with the aid of hydrogen sulfide in a gas admission zone. To this end, the disclosure provides for the acid to be dearsenified in a gas admission zone subdivided so as to comprise at least two separate liquid matter-receiving zones, each zone being separated from the other by means of a separate gas zone; for the liquid in each of the liquid matter-receiving zones to be maintained at a level 0.1 up to 10 cm high, without admission of gas; for hydrogen sulfide which remained unreacted in the individual liquid matter-receiving zones to be collected in the respective gas zone and for it to be finely redispersed in the liquid matter-receiving zone directly upstream of the respective gas zone by allowing the hydrogen sulfide to flow through a plurality of openings into the acid, the latter being delivered from the respective liquid-matter-receiving zone into the next downstream liquid-matter-receiving zone, and introduced thereinto directly below the liquid matter level therein; for precipitated arsenic sulfide to be separated from the acid coming from the lower end of the gas admission zone, and for the filtrate obtained to be freed from gaseous hydrogen sulfide in excess.
    • 本公开涉及在气体入口区借助硫化氢连续脱砷多磷酸的方法。 为此,本公开内容提供了在气体进入区域中进行脱砷的酸,其被细分为包括至少两个分离的液体物质接收区域,每个区域通过单独的气体区域与另一个区域分离; 使每个液体物质接收区域中的液体保持在0.1至10厘米高的水平,而不允许气体; 对于在各个液体物质接收区中保持未反应的硫化氢,其被收集在各个气体区中,并且通过允许硫化氢流动直接在各个气体区的上游被精细地再分散在液体物质接收区中 通过多个开口进入酸,后者从相应的液体接收区输送到下一个下游液体接收区,并直接在其中引入液体物质的下方; 使沉淀的硫化砷与气体入口区的下端的酸分离,得到的过滤得到的无水硫化氢的滤液。