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    • 1. 发明授权
    • Process for the preparation of ammonium polyphosphate
    • 制备聚对苯二甲酸一铵的方法
    • US5139758A
    • 1992-08-18
    • US731541
    • 1991-07-17
    • Thomas StaffelRenate Adrian
    • Thomas StaffelRenate Adrian
    • C01B25/40
    • C01B25/405
    • To prepare essentially water-insoluble, chain-form ammonium polyphosphate from equimolar amounts of di- ammonium phosphate and phosphorus pentoxide in the presence of ammonia at temperatures of from 170.degree. to 350.degree. C. with constant mixing, kneading and comminution, at least some of the diammonium phosphate and phosphorus pentoxide is replaced by partially ammoniated polyphosphoric acid.A plant for carrying out this process can comprise a sealed reactor (1) which is provided with metering devices (2, 3) and feed tubes (4, 5) for phosphorus pentoxide and diammonium orthophosphate, an ammonia feed tube (8), an ammonium polyphosphate discharge tube (9) and a line for offgas. Rotatable mixing, kneading and comminution elements are provided inside the reactor (1). Furthermore, a heatable stirred tank (11) which can be charged with polyphosphoric acid via a feed line (13) is provided and can be used to remore water vapor and ammonia from the offgas flowing from the reactor (1) via the line (20) and from which partially ammoniated polyphosphoric acid can be introduced into the reactor (1) via an outlet line (17).
    • 在氨存在下,在170〜350℃的温度下,从等摩尔量的磷酸二氢铵和五氧化二磷基本上制备水不溶性的链状多磷酸铵,同时进行不断的混合,捏和和粉碎 的磷酸氢二铵和五氧化二磷被部分氨化的多磷酸代替。 用于进行该方法的设备可以包括密封反应器(1),该反应器设置有用于五氧化二磷和正磷酸二铵的计量装置(2,3)和进料管(4,5),氨进料管(8), 多磷酸铵放电管(9)和废气管线。 在反应器(1)内设置可旋转混合,捏合和粉碎元件。 此外,提供了可以通过进料管线(13)装入多磷酸的可加热搅拌罐(11),并且可用于通过管线(20)从从反应器(1)流出的废气中再次蒸发水蒸气和氨 ),并且可以通过出口管线(17)将部分氨化的多磷酸从其中引入反应器(1)。
    • 3. 发明授权
    • Process for producing ammonium polyphosphate which gives a low-viscosity
aqueous suspension
    • 生产多磷酸铵的方法,其产生低粘度水悬浮液
    • US5043151A
    • 1991-08-27
    • US555931
    • 1990-07-20
    • Thomas StaffelRenate Adrian
    • Thomas StaffelRenate Adrian
    • C01B25/40C09D5/18
    • C09D5/185C01B25/405
    • A process for producing essentially water-insoluble, chain-type ammonium polyphosphates of the general formula (NH.sub.4 PO.sub.3).sub.n, in which n is a number from 10 to 1,000, whose 20% by weight aqueous suspension prepared at 60.degree. C. has a viscosity of less than 100 mPa.s at 20.degree. C., is indicated, which comprises allowing a reaction mixture of ammonium orthophosphate and phosphorus pentoxide to react fully at a high mixing intensity in a crumbly phase at a temperature from 100.degree. to 300.degree. C. over a period of from 10 to 60 minutes and then heat-treating the reaction material in a known manner over a period of from 50 to 200 minutes at a temperature from 200.degree. to 300.degree. C. under an ammonia atmosphere.Advantageously, the reaction is carried out in a kneader.
    • 一种生产基本上不溶于水的,具有通式(NH 4 PO 3)n的链型多磷酸铵的方法,其中n为10至1,000的数,其20重量%在60℃下制备的水悬浮液具有粘度 在20℃下小于100mPa.s,其包括允许正磷酸铵和五氧化二磷的反应混合物在高温下在100〜300℃的温度下以高混合强度反应 在10〜60分钟的时间内,在氨气氛下,在200〜300℃的温度下,在50〜200分钟的时间内,以已知的方式对反应材料进行热处理。 有利地,反应在捏合机中进行。
    • 4. 发明授权
    • Production of Maddrell salt
    • Maddrell盐的生产
    • US4162300A
    • 1979-07-24
    • US945502
    • 1978-09-25
    • Renate AdrianRaban VON SchenckKlaus SommeHermann Weber
    • Renate AdrianRaban VON SchenckKlaus SommeHermann Weber
    • C01B25/445C01B15/16C01B25/26
    • C01B25/445
    • Pure Maddrell salt is produced by heating sodium phosphate to temperatures of 250.degree. to 420.degree. C. The sodium phospate used as starting material is sodium trimetaphosphate or a mixture of sodium trimetaphosphate with Maddrell salt, monosodium orthophosphate or disodium pyrophosphate, the mixture containing Na and P in a molar ratio of 1:1. Prior to heating the starting material, it is admixed with 0.5 to 5 weight% of orthophosphoric acid, polyphosphoric acid, phosphorus pentoxide or at least one salt of a volatile base forming polyphosphoric acid at the temperatures specified. The resulting mixture is calcined over the period necessary to transform the starting material to Maddrell salt.
    • 纯麦德雷尔盐是通过将磷酸钠加热至250-420℃的温度而制得的。用作原料的磷酸钠是三偏磷酸钠或三偏磷酸钠与马德雷尔盐,正磷酸单钠或焦磷酸二钠的混合物,混合物含有Na和 P的摩尔比为1:1。 在加热原料之前,在指定的温度下与0.5-5重量%的正磷酸,多磷酸,五氧化二磷或至少一种形成多磷酸的挥发性碱的盐混合。 将所得混合物在将起始材料转化为Maddrell盐所需的时间内煅烧。
    • 5. 发明授权
    • Process for making granulated condensed phosphates
    • 颗粒状缩合磷酸盐的制备方法
    • US4394359A
    • 1983-07-19
    • US303425
    • 1981-09-18
    • Horst-Dieter Wasel-NielenAlexander MaurerRenate Adrian
    • Horst-Dieter Wasel-NielenAlexander MaurerRenate Adrian
    • C01B25/38C01B25/39C11D3/06C01B25/40
    • C11D3/062C01B25/38C01B25/39
    • The invention relates to a process for converting water-soluble, condensed phosphates of the following general formula (I)M.sub.2 O(MPO.sub.3).sub.n (I)in which M stands for sodium, potassium or ammonium and n stands for a number between 4 and about 100, to granulate, wherein the pulverulent, water-soluble, condensed phosphate is thoroughly agitated and granulated in the presence of water and of a phosphate salt other than the condensed phosphate. More specifically, the condensed phosphate of general formula (I) or a mixture of the phosphate with an anhydrous or partially hydrated alkali metal phosphate is thoroughly agitated and granulated in the presence of water and an ammonium polyphosphate of the following general formula (II)H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 (II)in which n stands for an integral average value of 3 to 1000, m stands for a whole number of up to n+2, and the m/n-ratio is between about 1.0 and 1.67.
    • 本发明涉及一种转化下列通式(I)M 2 O(MPO 3)n(I)的水溶性缩合磷酸酯的方法,其中M代表钠,钾或铵,n代表4至约 100,其中将粉末状,水溶性的缩合磷酸盐在水和磷酸盐以外的磷酸盐的存在下充分搅拌和造粒。 更具体地,将通式(I)的缩合磷酸酯或磷酸盐与无水或部分水合的碱金属磷酸盐的混合物在水和多磷酸铵的存在下充分搅拌并造粒,通式为(II)H (nm)+2(NH4)mPnO3n + 1(II)其中n表示3〜1000的积分平均值,m表示n + 2的整数,m / n比在 约1.0和1.67。