Process for the preparation of phosphorous acid
    1.
    发明授权
    Process for the preparation of phosphorous acid 失效
    制备磷酸的方法

    公开(公告)号:US5147625A

    公开(公告)日:1992-09-15

    申请号:US739873

    申请日:1991-08-02

    IPC分类号: C01B7/03 C01B25/163

    CPC分类号: C01B7/035 C01B25/163

    摘要: In a continuous process for the preparation of phosphorous acid with simultaneous production of hydrochloric acid, a reaction zone is provided which is in open communication with a first scrubbing zone. A portion of the reaction product is recycled from the bottom of the reaction zone into the top of the scrubbing zone and phosphorous acid is removed from the circulation. Hydrogen chloride gas escaping from the top of the first scrubbing zone is brought into contact, in a cooled, second scrubbing zone, with an overstoichiometric amount of water. Hydrochloric acid is obtained which is passed as starting material into the reaction zone or into the top of the first scrubbing zone. The external cooling of the second scrubbing zone is controlled such that the temperature in the reaction zone is kept constant at a desired value between 90.degree. and 130.degree. C. without adding any external cooling or heating energy. Pure hydrochloric acid is recovered in an absorption zone.

    摘要翻译: 在以同时生产盐酸制备亚磷酸的连续方法中,提供了与第一洗涤区开放连通的反应区。 反应产物的一部分从反应区的底部再循环到洗涤区的顶部,并且从循环中除去亚磷酸。 从第一洗涤区的顶部排出的氯化氢气体在冷却的第二洗涤区中与化学计量的水接触。 得到的盐酸作为原料进入反应区或进入第一洗涤区的顶部。 控制第二洗涤区的外部冷却,使得反应区中的温度保持恒定在90℃至130℃之间的期望值,而不增加任何外部冷却或加热能量。 在吸收区中回收纯盐酸。

    Process for the preparation of dicalcium phosphate
    2.
    发明授权
    Process for the preparation of dicalcium phosphate 失效
    磷酸二钙的制备方法

    公开(公告)号:US5024825A

    公开(公告)日:1991-06-18

    申请号:US521737

    申请日:1990-05-10

    IPC分类号: C01B25/32

    CPC分类号: C01B25/322

    摘要: For the preparation of dicalcium phosphate dihydrate stabilized with dimagnesium phosphate trihydrate and sodium pyrophosphate, an aqueous suspension of calcium carbonate is introduced into a reactor and recirculated by pumping through a high-speed mixer at 3,500 to 8,000 rpm which is in flow connection with the lower and upper portion of the reactor. Into the mixer an amount of phosphoric acid is introduced which is at least sufficient for the quantitative formation of dicalcium phosphate dihydrate and then an oxygen-containing magnesium compound is introduced into the reactor. Finally, lime milk is metered into the reactor up to a maximum pH of 6.9, before the sodium pyrophosphate is added to the reactor. The resulting suspension which has a stabilized dicalcium phosphate dihydrate content of 20 to 33% by weight is spray-dried.An apparatus for carrying out the process comprises besides a stirred reactor 1 two stirrer-equipped slurry containers (6, 7) and an intermediate container 16 from which a line 17 leads into a spray tower 18 where it ends above an atomizer wheel 19. The spray tower 18 is also the end point for hot air lines 20 and is in flow connection with a filter 22. The bottom of filter 22 is the starting point for a product line 24 via which highly adsorbent dicalcium phosphate dihydrate can be withdrawn.

    摘要翻译: 为了制备用磷酸三氢镁和焦磷酸钠稳定的磷酸二钙二水合物,将碳酸钙的水性悬浮液引入反应器中,并通过泵送通过高速混合器以3,500至8,000rpm再循环,该高速混合器与下部流动相连 和反应器的上部。 向混合器中加入一定量的磷酸,其至少足以定量形成磷酸二钙二水合物,然后将含氧的镁化合物引入反应器中。 最后,在将焦磷酸钠加入到反应器中之前,将石灰乳计量加入反应器直至最高pH为6.9。 所得到的具有稳定的磷酸二钙二水合物含量为20至33重量%的悬浮液被喷雾干燥。 用于进行该方法的装置除了具有搅拌反应器1的两个装有搅拌器的浆料容器(6,7)和中间容器16之外,其中管线17从该搅拌反应器引入喷雾塔18,在该喷雾塔18中它结束在雾化器轮19的上方。 喷雾塔18也是热空气管线20的终点,并且与过滤器22流动连接。过滤器22的底部是产物线24的起始点,通过该产物线24可以抽出高吸附性磷酸二钙二水合物。

    Sparingly soluble alkali metal silicate
    4.
    发明授权
    Sparingly soluble alkali metal silicate 失效
    微溶性碱金属硅酸盐

    公开(公告)号:US06743766B1

    公开(公告)日:2004-06-01

    申请号:US09659394

    申请日:2000-09-11

    IPC分类号: C11D308

    CPC分类号: C01B33/32 C11D3/1273

    摘要: The invention relates to a sparingly soluble alkali metal silicate which comprises alkali metal phyllosilicate in finely divided form in a non-phyllosilicatic alkali metal silicate environment of the formula x MI2O.y SiO2, in which MI is an alkali metal and y/x (1.9 to 500): 1; a process for its preparation and its use in detergents and cleaners.

    摘要翻译: 本发明涉及一种微溶的碱金属硅酸盐,其在细粉状形式的碱金属页硅酸盐在式(M 2)SiO 2的非页硅酸碱金属硅酸盐环境中,其中M是碱 金属和y / x(1.9〜500):1; 其制备方法及其在洗涤剂和清洁剂中的应用。

    Builder composition prepared by heat-treating a crystalline layered Na silicate
    6.
    发明授权
    Builder composition prepared by heat-treating a crystalline layered Na silicate 失效
    通过热处理结晶层状硅酸钠制备的生成器组合物

    公开(公告)号:US06908896B2

    公开(公告)日:2005-06-21

    申请号:US10123796

    申请日:2002-04-16

    IPC分类号: C11D3/08 C11D3/12

    CPC分类号: C11D3/1273

    摘要: The invention relates to builder compositions with improved dissolution residue behavior, obtained by bringing a) crystalline layered sodium silicate of the formula NaMSixO2x+1*yH2O, where M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from 0 to 20, and b) water or an aqueous solution or dispersion of at least one detergent ingredient, c) where the molar ratio of component a) to the water from component b) is 0.5:1 to 20:1, into contact with one another and subsequently heat-treating the resulting builder composition at 30 to 400° C. for 0.5 to 1000 min.

    摘要翻译: 本发明涉及具有改进的溶解残留行为的助洗剂组合物,其通过使a)结晶层状硅酸钠由式NaMSi x O 2 x + 1 * y H 2 其中M为钠或氢,x为1.9至4的数,y为0至20的数,b)水或至少一种洗涤剂成分的水溶液或分散体,c) 其中组分a)与组分b)的水的摩尔比为0.5:1至20:1,彼此接触,随后在30至400℃下热处理所得助洗剂组合物0.5至1000分钟 。

    Process for making calciummonohydrogen phosphate dihydrate
    8.
    发明授权
    Process for making calciummonohydrogen phosphate dihydrate 失效
    磷酸二氢钙二水合物的制备方法

    公开(公告)号:US4483837A

    公开(公告)日:1984-11-20

    申请号:US507784

    申请日:1983-06-24

    IPC分类号: C01B25/32 C01B15/16 C01B25/26

    CPC分类号: C01B25/322

    摘要: The disclosure relates to a process for making calciummonohydrogen phosphate dihydrate with a high degree of whiteness from pure phosphoric acid and naturally occurring calcium carbonates. More particularly, a fine-particulate calcium carbonate is suspended in water and the suspension is mixed at temperatures between 0.degree. and 60.degree. C. with phosphoric acid so as to establish a Ca/P-ratio of 0.20 up to 0.57. The phosphoric acid is added in quantities per unit time preventing the resulting mixture from foaming over. Next, solid matter constituents are separated from the mixture, after CO.sub.2 has ceased to evolve, with the resultant formation of a clear colorless acid solution. This solution and an aqueous suspension or solution of pure alkali metal and/or alkaline earth metal carbonates and/or hydroxides, are jointly introduced into a reaction zone at a reaction temperature of 20.degree. to 45.degree. C. so as to establish a pH-value initially of 2.0 to 5.0 and then, towards the end of the reaction of 6.0 to 8.0. Finally, the reaction product is filtered off, washed out, and dried in known fashion.

    摘要翻译: 本公开涉及一种从纯磷酸和天然存在的碳酸钙制备具有高白度的磷酸氢钙二水合物的方法。 更具体地,将细颗粒碳酸钙悬浮在水中,并将悬浮液在0℃至60℃的温度下与磷酸混合,以便确定0.20至0.57的Ca / P比。 每单位时间内加入磷酸,防止所得混合物发泡。 接下来,在CO 2停止放出之后,固体成分与混合物分离,形成澄清的无色酸溶液。 将该溶液和纯碱金属和/或碱土金属碳酸盐和/或氢氧化物的水性悬浮液或溶液在20〜45℃的反应温度下共同引入反应区,以建立pH- 值最初为2.0〜5.0,然后在6.0〜8.0的反应结束。 最后,将反应产物滤出,洗涤并以已知方式干燥。

    Process of preparing a crystalline sodium silicate builder composition
    9.
    发明授权
    Process of preparing a crystalline sodium silicate builder composition 失效
    制备结晶硅酸钠助洗剂组合物的方法

    公开(公告)号:US06844310B2

    公开(公告)日:2005-01-18

    申请号:US10039480

    申请日:2001-11-09

    摘要: The invention relates to builder compositions obtainable by bringing a) crystalline sheetlike sodium silicate of the formula NaMSixO2x+1.yH2O, where M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from 0 to 20. b) water and c) an acidic, H+-releasing component, where the d) molar ratio of the crystalline sheetlike sodium silicate a) to the total amount of the releasable H+ of the acid component c) is 4:1 to 1000:1 and the e) molar ratio of the water b) to the total amount of the releasable H+ of the acidic component c) is 3:1 to 1000:1. into contact with one another. The invention also relates to laundry detergents, cleaners, compounds and water softeners comprising the builder compositions according to the invention.

    摘要翻译: 本发明涉及通过使式NaMSixO 2 x + 1·yH 2 O的结晶片状硅酸钠得到的助洗剂组合物,其中M为钠或氢,x为数为1.9至4,y为0至20.b的数) 水和c)酸性H +释放组分,其中结晶片状硅酸钠a)的d)摩尔比与酸组分c)的可释放H +的总量为4:1至1000 :1和ee)水分b)与酸性组分c)的可释放H +的总量的摩尔比为3:1-1000:1,彼此接触。本发明还涉及洗衣 洗涤剂,清洁剂,化合物和软水剂,其包含根据本发明的助洗剂组合物。

    Granular alkali metal phyllosilicate compound
    10.
    发明授权
    Granular alkali metal phyllosilicate compound 失效
    颗粒状碱金属页硅酸盐化合物

    公开(公告)号:US06455491B2

    公开(公告)日:2002-09-24

    申请号:US09738583

    申请日:2000-12-15

    IPC分类号: C11D308

    摘要: The invention relates to a granular alkali metal phyllosilicate compound which comprises a crystalline alkali metal phyllosilicate, a colorant and an additive. The invention also relates to a process for its preparation, and to detergents and cleaners which comprise such a granular alkali metal phyllosilicate compound.

    摘要翻译: 本发明涉及一种颗粒状碱金属页硅酸盐化合物,其包含结晶性碱金属页硅酸盐,着色剂和添加剂。 本发明还涉及其制备方法,以及包含这种颗粒状碱金属页硅酸盐化合物的洗涤剂和清洁剂。