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    • 52. 发明申请
    • METHOD FOR PREPARING AMMONIUM BICARBONATE WITH FLUE GAS AND DEVICES THEREOF
    • 用气体制备二硼酸铵的方法及其装置
    • US20090191114A1
    • 2009-07-30
    • US12360513
    • 2009-01-27
    • Jian LiuZhiming Zhang
    • Jian LiuZhiming Zhang
    • C01B21/082F28D21/00B01J10/00
    • C01C1/26B01D53/62B01D53/78B01D2251/2062B01D2257/504Y02C10/04Y02P20/152
    • The present invention relates to a method for preparing ammonium bicarbonate with flue gas and device thereof. The method includes quantitatively collecting flue gas with a carbon dioxide concentration of about 8% to about 15% (volume), decreasing the temperature of the flue gas to about 50° C. or less with an air-cooling apparatus, then increasing the pressure of the flue gas to about 0.4 to about 1.2 MPa, and finally allowing the flue gas to react with liquid ammonia to produce ammonium bicarbonate. The device for preparing ammonium bicarbonate with flue gas includes a flue gas collecting apparatus, an air-cooling apparatus, a gas storing and pressurizing apparatus and an ammonium bicarbonate synthesizing apparatus. The issue of energy consumption brought by conventional cooling approach using cooling water is addressed by using an air-cooling apparatus. Meanwhile, the use of CO2 obtained from recycling the flue gas in synthesizing ammonium bicarbonate may achieve dual objects of not only reducing the discharge of CO2 and improving the environment, but also producing nitrogen fertilizer.
    • 本发明涉及一种用废气制备碳酸氢铵的方法及其装置。 该方法包括定量收集二氧化碳浓度为约8%至约15%(体积)的烟道气,用空气冷却装置将烟道气的温度降至约50℃或更低,然后增加压力 的烟道气至约0.4至约1.2MPa,最后允许烟道气与液氨反应产生碳酸氢铵。 用烟道气制备碳酸氢铵的装置包括烟气收集装置,空气冷却装置,气体储存和加压装置以及碳酸氢铵合成装置。 通过使用冷却水的常规冷却方法带来的能量消耗的问题通过使用空气冷却装置来解决。 同时利用回收烟气合成碳酸氢铵获得的二氧化碳可以实现二氧化碳排放减少,改善环境,同时生产氮肥的双重目的。
    • 59. 发明授权
    • Method of preparing dinitramidic acid and salts thereof
    • 制备二硝酸的方法及其盐
    • US5976483A
    • 1999-11-02
    • US983462
    • 1998-01-13
    • Abraham LangletHenric OstmarkNiklas Wingborg
    • Abraham LangletHenric OstmarkNiklas Wingborg
    • C01B21/087C01B21/082C06B25/00C06B31/00C06B41/00C01B21/20
    • C06B41/00C01B21/082C06B25/00C06B31/00
    • The invention relates to a method of preparing dinitramidic acid HN(NO.sub.2).sub.2 and salts thereof having the formula M.sup.+n (.sup.- N(NO.sub.2).sub.2).sub.n, wherein M is a metal cation or a nitrogen-containing cation and n=1-3. The dinitramide salt can be used as oxidiser in solid propellants. Dinitramidic acid is prepared by nitration of a compound selected from a group consisting of NH.sub.2 NO.sub.2, NH.sub.4 NH.sub.2 CO.sub.2 ; NH.sub.2 SO.sub.3 H, NH(SO.sub.3 H).sub.2, N(SO.sub.3 H).sub.3, and its salts with metal cations or organic cations, e.g. NH(SO.sub.3 NH.sub.4).sub.2, and other products formed when ammonia is reacted with sulphuric trioxide, with a common nitrating acid such as nitric acid/sulphuric acid or nitric acid/acetic anhydride. The invention also relates to a method of preparing dinitramide salt, comprising neutralisation of dinitramidic acid with a neutralising agent, e.g. ammonia, and recovery of the dinitramide salt from a mixture of salts formed in the neutralisation. An aqueous solution of the salt mixture is passed through a column containing an adsorbing agent which adsorbs the dinitramide salt and is selected from a class consisting of activated carbon, silica gel and zeolites. The dinitramide salt is eluted with an elution agent consisting of hot water and/or a polar organic solvent, e.g. acetone, acetonitrile, 2-propanol and other lower alcohols and mixtures thereof.
    • PCT No.PCT / SE96 / 00976 Sec。 371日期1998年1月13日 102(e)1998年1月13日PCT PCT 1996年7月26日PCT公布。 出版物WO97 / 06099 日期1997年2月20日本发明涉及制备具有式M + n(-N(NO 2)2)n的二硝基酸HN(NO 2)2及其盐的方法,其中M为金属阳离子或含氮 阳离子,n = 1-3。 二硝酸盐可用作固体推进剂中的氧化剂。 二硝基甲酸通过硝化选自由NH 2 NO 2,NH 4 NH 2 CO 2, NH 2 SO 3 H,NH(SO 3 H)2,N(SO 3 H)3及其与金属阳离子或有机阳离子的盐。 NH(SO3NH4)2,和氨与三氧化硫反应形成的其他产物与硝酸/硫酸或硝酸/乙酸酐等常见硝酸反应生成。 本发明还涉及一种制备二硝酸盐的方法,其包括用中和剂中和二硝基甲酸,例如, 氨和从中和形成的盐的混合物中回收二硝酸盐。 将盐混合物的水溶液通过含有吸附二硝酸盐的吸附剂的柱,并且选自活性炭,硅胶和沸石。 用由热水和/或极性有机溶剂组成的洗脱剂洗脱二硝
      化盐,例如, 丙酮,乙腈,2-丙醇等低级醇及其混合物。