会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 23. 发明授权
    • Process for purifying phosphorous acid
    • 纯化亚磷酸的方法
    • US4834960A
    • 1989-05-30
    • US182871
    • 1988-04-18
    • Jurgen GrosseGunther SchimmelBernhard Hofmann
    • Jurgen GrosseGunther SchimmelBernhard Hofmann
    • C01B25/163
    • C01B25/163
    • The purification of phosphorous acid which is formed in halogenations of hydrocarbon derivatives using phosphorus trihalides is carried out in the context of preparing phosphorous acid in a reaction zone by reacting a mixture of phosphorus trichloride and water which has been finely divided by means of steam at temperatures between 150.degree. and 200.degree. C. in the gas phase. In this process, the liquid reaction product drains into a concentrating evaporation zone which has a downstream first separation zone. Inert gas is introduced to the lower part of the first separation zone. A melt is withdrawn from the first separation zone into a crystallizing zone. The waste gases from the reaction zone are treated with a washing liquid in a second separation zone before being passed into the atmosphere. The washing liquid used is an aqueous solution of never-purified phosphorous acid, which can have been prepurified by hydrolysis and stripping.
    • 通过使用三卤化磷在烃衍生物的卤化中形成的亚磷酸的纯化是在反应区中通过使三氯化磷和水分混合物在蒸气中分解的温度反应在反应区中进行的 在气相中为150〜200℃。 在该方法中,液体反应产物排入具有下游第一分离区的浓缩蒸发区。 惰性气体被引入第一分离区的下部。 将熔体从第一分离区取出成结晶区。 来自反应区的废气在通入大气中之前用洗涤液在第二分离区中处理。 所使用的洗涤液是未经纯化的亚磷酸的水溶液,其可以通过水解和汽提进行预净化。
    • 27. 发明授权
    • Process for producing crystalline sodium silicates having a layered
structure
    • 具有层状结构的结晶硅酸钠的制造方法
    • US5236682A
    • 1993-08-17
    • US846758
    • 1992-03-05
    • Gunther SchimmelMichael KotzianHerbert PanterAlexander Tapper
    • Gunther SchimmelMichael KotzianHerbert PanterAlexander Tapper
    • C01B33/32C01B33/38
    • C01B33/325C01B33/32C01B33/38
    • For producing crystalline sodium silicates having a layer structure, an SiO.sub.2 /Na.sub.2 O molar ratio of (1.9 to 2.1):1 and a water content of less than 0.3% by weight from a waterglass solution containing at least 20% by weight of solids, the waterglass solution is obtained by reacting quartz sand with sodium hydroxide solution at an SiO.sub.2 /Na.sub.2 O molar ratio of (2.0 to 2.3):1 at temperatures of 180.degree. to 240.degree. C. and pressures of 10 to 30 bar. This waterglass solution is treated in a spray-drying zone with hot air at 200.degree. to 300.degree. C. for a residence time of 10 to 25 seconds and at a temperature of the exit gas leaving the spray-drying zone of 90.degree. to 130.degree. C., to form a pulverulent amorphous sodium silicate having a water content (determined as the loss on ignition at 700.degree. C.) of 15 to 23% by weight and a bulk density of more than 300 g/l. The pulverulent, amorphous, water-containing sodium silicate is introduced into an obliquely arranged rotary kiln fitted with devices for moving solids and treated therein with flue gas in countercurrent at temperatures from more than 500.degree. up to 850.degree. C. for 1 to 60 minutes to form crystalline soidium silicate. The rotary kiln is here insulated in such a way that its outside wall temperature is less than 60.degree. C. Finally, the crystalline sodium silicate emerging from the rotary kiln is comminuted by means of a mechanical crusher to grain sizes of 0.1 to 12 mm.
    • 为了生产具有层状结构的结晶硅酸钠,SiO 2 / Na 2 O摩尔比为(1.9-2.1):1,水含量小于含有至少20重量%固体的水玻璃溶液的0.3重量% 通过使SiO 2 / Na 2 O摩尔比为(2.0〜2.3):1的石英砂与氢氧化钠溶液在180〜240℃的温度和10〜30巴的压力下反应获得水玻璃溶液。 该水玻璃溶液在200℃至300℃的热空气的喷雾干燥区中处理,停留时间为10至25秒,并且在离开喷雾干燥区的出口气体的温度为90°至130° 以形成具有15至23重量%的含水量(以700℃测定的点火损失确定)的粉末状无定形硅酸钠,堆积密度大于300g / l。 将粉末状,无定形含水硅酸钠引入倾斜布置的回转窑中,该回转窑装有固体移动装置,并在大于500℃至850℃的温度下逆流处理烟气1至60分钟 以形成硅酸的结晶硅酸盐。 回转窑的外壁温度低于60℃,最后将回转窑中出现的结晶硅酸钠粉碎成0.1〜12mm的粒度粉碎机。
    • 28. 发明授权
    • Process for the preparation of crystalline sodium silicates having a
sheet structure
    • 制备具有片状结构的结晶硅酸钠的方法
    • US5211930A
    • 1993-05-18
    • US693782
    • 1991-04-26
    • Gunther SchimmelReinhard GradlMartin Schott
    • Gunther SchimmelReinhard GradlMartin Schott
    • C01B33/38
    • C01B33/38
    • For the preparation of crystalline sodium silicates having a sheet structure and an SiO.sub.2 /Na.sub.2 O molar ratio of 1.9:1 to 3.5:1 from waterglass solutions having a solids content of 20 to 65% by weight, the waterglass solutions are first treated in a spray-drying zone. This gives a pulverulent amorphous sodium silicate having a maximum ignition loss of 20% by weight, while the waste gas leaving the spray-drying zone is at a temperature of at least 140.degree. C. Thereafter, the spray-dried sodium silicate is heated in an ignition zone containing an agitated solid bed at temperatures of 500.degree. to 800.degree. C. for 1 to 60 minutes in the presence of at least 10% by weight of recycled material. This recycled material was obtained by mechanical comminution of crystalline sodium silicate discharged from the ignition zone.
    • 对于具有固体含量为20至65重量%的水玻璃溶液,具有片状结构和SiO 2 / Na 2 O摩尔比为1.9:1至3.5:1的结晶硅酸钠的制备,先将水玻璃溶液以喷雾 干燥区 这产生了具有20重量%的最大灼烧损失的粉状无定形硅酸钠,而离开喷雾干燥区的废气处于至少140℃的温度。此后,将喷雾干燥的硅酸钠加热 在至少10重量%的再循环材料的存在下,在500℃至800℃的温度下含有搅拌的固体床1分钟至60分钟的点火区域。 该回收材料通过从点火区域排出的结晶硅酸钠的机械粉碎获得。
    • 29. 发明授权
    • Process for the preparation of alkali metal phosphate solutions
    • 制备碱金属磷酸盐溶液的方法
    • US5124137A
    • 1992-06-23
    • US676862
    • 1991-03-28
    • Gunther SchimmelThomas StaffelReinhard Gradl
    • Gunther SchimmelThomas StaffelReinhard Gradl
    • C01B25/30
    • C01B25/308
    • Alkali metal phosphate solutions having a fluorine content of less than 20 ppm, based on P.sub.2 O.sub.5, are prepared by first digesting crude phosphate using sulfuric acid, and separating the calcium sulfate from the crude phosphoric acid. An alkali metal compound is then added to the crude phosphoric acid, and the precipitated solid is filtered off. The prepurified crude phosphoric acid is neutralized to a pH of at least 7, and the solid produced during this operation is separated off. The resultant alkali metal phosphate solutions having a P.sub.2 O.sub.5 content of from 10 to 30% by weight are adjusted to a pH of between 4.8 and 6.0 using phosphoric acid. The solutions are heated to from 60.degree. to 120.degree. C., and from 1 to 6% by weight, based on the weight of the solution, of an alkaline earth metal oxygen compound are added to the alkali metal phosphate solutions with stirring. Finally, the precipitated solid is filtered off from the alkali metal phosphate solutions after a residence time of from 0.5 to 4 hours.
    • 通过首先使用硫酸消化粗磷酸酯,并从粗磷酸中分离硫酸钙,制备基于P 2 O 5的氟含量小于20ppm的碱金属磷酸盐溶液。 然后向粗磷酸中加入碱金属化合物,滤出沉淀的固体。 将预纯化的粗磷酸中和至至少7的pH,并且在该操作期间产生的固体被分离出来。 使用磷酸将所得的具有10-30重量%的P2O5含量的碱金属磷酸盐溶液调节至4.8至6.0的pH。 在搅拌下将溶液加热至60〜120℃,以溶液重量为1〜6重量%的碱土金属氧化合物加入到碱金属磷酸盐溶液中。 最后,在0.5-4小时的停留时间后,将沉淀的固体从碱金属磷酸盐溶液中滤出。