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103 条记录 (耗时 0.013 秒)

    Method of producing chlorine dioxide employs alkaline chlorate in a mineral acid medium and urea as a reducing agent
    52.
    发明授权
    Method of producing chlorine dioxide employs alkaline chlorate in a mineral acid medium and urea as a reducing agent 失效
    生产二氧化氯的方法采用无机酸介质中的碱式氯酸盐和作为还原剂的尿素

    公开(公告)号：US06921521B2

    公开(公告)日：2005-07-26

    申请号：US10686691

    申请日：2003-10-15

    申请人： TianLang Chen ,  YaoPing Wu ,  ShenXiu Xiao

    发明人： TianLang Chen ,  YaoPing Wu ,  ShenXiu Xiao

    IPC分类号： C05C5/02 ,  C01B11/02 ,  C05C9/00 ,  C05D1/00

    CPC分类号： C05C5/02

    摘要： A method of producing chlorine dioxide (ClO2) is described which employs Urea as a reducing agent to reduce alkaline chlorate (NaClO3 or KClO3) in a mineral acid medium. The method of the invention can, for example, by means of a very high transfer rate, be used to reduce over 90% of the reactant, alkaline chlorate, to the product, chlorine dioxide. Furthermore, ClO2 product purity is accomplished, for example, over 95%. The mother solution of the reaction can then be processed, for example, to produce other useful inorganic salts, including potassium sulfate, potassium nitrate, sodium nitrate, and the like, and/or compound fertilizer resulting in useful chemical products rather than toxic waste. Accordingly, the method of the invention provides for efficient, cost effective, and safe production of ClO2 as well as inorganic salts and/or compound fertilizer.

    摘要翻译： 描述了一种生产二氧化氯（ClO 2 H 2）的方法，其使用尿素作为还原剂来还原碱性氯酸盐（NaClO 3或KClO 3 N 2） ）在无机酸介质中。 本发明的方法可以例如通过非常高的转移速率，将90％以上的反应物，碱式氯酸盐，还原成产物，二氧化氯。 此外，ClO 2 H 2产物纯度例如超过95％。 然后可以处理该反应的母溶液，例如，生产其它有用的无机盐，包括硫酸钾，硝酸钾，硝酸钠等，和/或复合肥料，产生有用的化学产品而不是有毒废物。 因此，本发明的方法提供了ClO 2 N以及无机盐和/或复合肥料的有效，成本有效和安全的生产。

    Process and equipment for nitrogen oxide waste conversion to fertilizer
    53.
    发明授权
    Process and equipment for nitrogen oxide waste conversion to fertilizer 失效
    氮氧化物废物转化为肥料的工艺和设备

    公开(公告)号：US6039783A

    公开(公告)日：2000-03-21

    申请号：US772057

    申请日：1996-12-03

    申请人： Dale E. Lueck ,  Clyde F. Parrish

    发明人： Dale E. Lueck ,  Clyde F. Parrish

    IPC分类号： B01D53/56 ,  C01D9/06 ,  C05C5/02 ,  C01B21/48

    CPC分类号： B01D53/56 ,  C01D9/06 ,  C05C5/02

    摘要： The present invention describes a process for converting vapor streams from sources containing at least one nitrogen-containing oxidizing agent therein to a liquid fertilizer composition comprising the steps of:a) directing a vapor stream containing at least one nitrogen-containing oxidizing agent to a first contact zone,b) contacting said vapor stream with water to form nitrogen oxide(s) from said at least one nitrogen-containing oxidizing agent,c) directing said acid(s) as a second stream to a second contact zone,d) exposing said second stream to hydrogen peroxide which is present within said second contact zone in a relative amount of at least 0.1% by weight of said second stream within said second contact zone to convert at least some of any nitrogen oxide species or ions other than in the nitrate form present within said second stream to nitrate ion,e) sampling said stream within said second contact zone to determine the relative amount of hydrogen peroxide within said second contact zone,f) adding hydrogen peroxide to said second contact zone when a level of hydrogen peroxide less than 0.1 % by weight in said second stream is determined by said sampling,g) adding a solution comprising potassium hydroxide to said second stream to maintain a pH between 6.0 and 11.0 within said second stream within said second contact zone to form a solution of potassium nitrate, andh) removing said solution of potassium nitrate from said second contact zone.

    摘要翻译： 本发明描述了一种将来自其中含有至少一种含氮氧化剂的源的蒸汽流转化为液体肥料组合物的方法，包括以下步骤：a）将含有至少一种含氮氧化剂的蒸气流引导至第一 接触区，b）使所述蒸气流与水接触以从所述至少一种含氮氧化剂形成氮氧化物，c）将所述酸作为第二流引导到第二接触区，d）暴露 所述第二物流以所述第二接触区内所述第二物流的至少0.1重量％的相对量存在于所述第二接触区内，以转化除所述第二接触区之外的任何氮氧化物种类或离子中的至少一些 存在于所述第二流内的硝酸盐形式为硝酸根离子，e）在所述第二接触区内采样所述流，以确定所述第二接触区内的过氧化氢的相对量 接触区，f）当通过所述取样确定所述第二料流中小于0.1重量％的过氧化氢水平时，向所述第二接触区域加入过氧化氢，g）将所述第二料流中包含氢氧化钾的溶液加入以维持 在所述第二接触区内的所述第二流内的pH在6.0和11.0之间，以形成硝酸钾溶液，和h）从所述第二接触区中除去所述硝酸钾溶液。

    Coated granular fertilizer capable of controlling the effect of temperature upon dissolution-out rate
    54.
    发明授权
    Coated granular fertilizer capable of controlling the effect of temperature upon dissolution-out rate 失效
    能够控制温度对溶出率的影响的涂层颗粒肥料

    公开(公告)号：US4369055A

    公开(公告)日：1983-01-18

    申请号：US299203

    申请日：1981-09-03

    申请人： Toshio Fujita ,  Chigo Takahashi ,  Shigemitsu Yoshida ,  Hirozo Shimizu, deceased

    发明人： Toshio Fujita ,  Chigo Takahashi ,  Shigemitsu Yoshida ,  Hirozo Shimizu, deceased

    IPC分类号： C05C1/02 ,  B01J2/30 ,  C05G3/00 ,  C05C5/02

    CPC分类号： B01J2/30 ,  C05G3/0029

    摘要： Fertilizers coated with coating layer having a controlled moisture permeability and a controlled temperature dependency of moisture permeability are presented by the production method which comprises ejecting hot drying air to the spout of granular fertilizer and spraying a hot solution of polyolefin type resin, ethylene-vinyl acetate copolymer or vinylidene type resin upon said fertilizer granules and drying said fertilizer granules upon being sprayed with solution having the property capable of forming a solution while it is hot but turning into jelly-like gel when it is cooled but as a most characteristic feature of this method uniformly dispersed fine powder is incorporated in said drying air or in said solution so as to have a coated layer of said resin containing uniformly distributed fine powder.

    摘要翻译： 通过包括将热干燥空气喷射到颗粒肥料的喷口并喷射聚烯烃类树脂，乙烯 - 乙酸乙烯酯的热溶液的方法，提供了涂覆有具有受控的透湿性和受湿气透过性的受控温度依赖性的涂层的肥料 共聚物或亚乙烯基型树脂在所述肥料颗粒上干燥，并且在喷洒具有能够在热时形成溶液的性质的溶液时干燥所述肥料颗粒，当冷却时变成胶状凝胶，但是作为其最特征的特征 将均匀分散的细粉末的方法结合到所述干燥空气或所述溶液中，以具有包含均匀分布的细粉末的所述树脂的涂层。

    Method for producing coated fertilizer
    55.
    发明授权
    Method for producing coated fertilizer 失效
    生产涂层肥料的方法

    公开(公告)号：US4019890A

    公开(公告)日：1977-04-26

    申请号：US529125

    申请日：1974-12-03

    申请人： Toshio Fujita ,  Chigo Takahashi ,  Masanari Ohshima ,  Tsunezo Ushioda ,  Hirozo Shimizu

    发明人： Toshio Fujita ,  Chigo Takahashi ,  Masanari Ohshima ,  Tsunezo Ushioda ,  Hirozo Shimizu

    IPC分类号： C05C1/02 ,  B01J2/00 ,  C05G3/00 ,  C05C5/02

    CPC分类号： B01J2/006 ,  C05G3/0035

    摘要： Granular slow-releasing fertilizers completely coated with water-resisting resin are produced in such a manner that the coated granules do not stick together, through one step operation by spraying a solution of the resin which has the property capable of maintaining the solution state while it is hot but turning into jelly-like gel when it is cooled, on granules of fertilizer and drying the said granules with a high speed drying hot air on the spot upon being sprayed with the solution of the resin.

    摘要翻译： 完全涂覆有耐水性树脂的颗粒缓释肥料以这样的方式制造，使得涂覆的颗粒不粘在一起，通过一步操作通过喷涂具有能够保持溶液状态的性质的树脂的溶液，同时 当它被冷却时变成果冻状凝胶，在化肥颗粒上，并在用树脂溶液喷涂之后，用高速干燥的热空气在所述颗粒上干燥所述颗粒。