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    • 1. 发明授权
    • Process for generation of fertilizer granules containing urea and ammonium sulfate
    • 生成含尿素和硫酸铵的肥料颗粒的方法
    • US06179893B2
    • 2001-01-30
    • US09330473
    • 1999-06-11
    • Horst BendixHeinz LangeKlaus Sch{umlaut over (u)}belHans-Joachim WachsmuthTetsuzo HondaEiji SakataGenshi Nishikawa
    • Horst BendixHeinz LangeKlaus Sch{umlaut over (u)}belHans-Joachim WachsmuthTetsuzo HondaEiji SakataGenshi Nishikawa
    • C05C900
    • C05C3/00C05C9/00
    • There is disclosed a process to produce fertilizer granules containing urea and ammonium sulfate with a high ammonium sulfate concentration of ≦60 wt. % in a fluidized bed granulator, which process comprises the steps of: a) a molten urea suspension consisting of ammonium sulfate having an average particle size of 30 to 300 &mgr;m and urea having a temperature range of 120 to 155° C. is produced, b) the molten urea suspension produced at the stage a) is then injected from below on the fine particles of urea/ammonium sulfate in a fluidized bed granulator by means of at least a nozzle, while the fluidized bed is loosened by a spouting air flow in the injection area, and subsequently, c) the fertilizer granules generated in the fluidized bed are separated and, if necessary, treated. Homogeneous urea/ammonium sulfate granules of an ammonium sulfate content between 30 and 60 wt. % can be produced this way without any problems, while the particle size of granules can be adjusted selectively and dust emissions by granulation can be reduced to a minimum.
    • 公开了一种生产含硫酸铵浓度<60重量%的尿素和硫酸铵的肥料颗粒的方法。 %的流化床造粒机,该方法包括以下步骤:a)制备由平均粒径为30-300μm的硫酸铵和温度范围为120-155℃的尿素组成的熔融尿素悬浮液, b)然后在流化床制粒机中通过至少一个喷嘴从下面将α阶段产生的熔融尿素悬浮液从下方注入到尿素/硫酸铵的细颗粒上,同时流化床被喷射空气流松动 在注射区域中,随后c)在流化床中产生的肥料颗粒被分离,并且如果需要,进行处理。 硫酸铵含量在30-60wt。之间的均匀的尿素/硫酸铵颗粒。 可以以这种方式产生%,而没有任何问题,而颗粒的粒度可以选择性地调节,并且通过造粒的粉尘排放可以降低到最小。
    • 3. 发明授权
    • Method for granulation and granulator
    • 制粒造粒机的方法
    • US06203730B1
    • 2001-03-20
    • US09141992
    • 1998-08-28
    • Tetsuzo HondaKimikazu KidoYuzuru YanagisawaHidetsugu Fujii
    • Tetsuzo HondaKimikazu KidoYuzuru YanagisawaHidetsugu Fujii
    • B29B910
    • C05G3/0058B01J2/16C05C9/005
    • There is disclosed an improved, energy-saving granulation method, wherein use is made of a granulator (1) having a bottom floor (9) of a granulation section whose bottom is a perforated plate, an upper air feed pipe (23) for feeding air for fluidization to the bottom floor of the granulation section, a lower air feed pipe (2), air feed pipes (3, 4, 5) branched from the lower air feed pipe for jetting air into the granulation section, and jetting nozzles (6, 7, 8) provided at the centers of the air outlets for jetting a molten raw material; which involves the steps of jetting a molten raw material from the jetting nozzles to approximately spherical nuclei in the granulation section, which have been fed after the particle diameter has been caused to be an average particle diameter of 0.4 to 3.0 mm, to form granules. There is also disclosed an improved granulator.
    • 公开了一种改进的节能造粒方法,其中使用造粒机(1),其具有底部是多孔板的造粒部分的底部底部(9),用于进给的上部空气供给管(23) 用于流态化到造粒部底底的空气,下部空气供给管(2),从下部空气供给管分支用于将空气喷射到造粒部的空气供给管(3,4,5)和喷射喷嘴 6,7,8)设置在空气出口的中心,用于喷射熔融原料; 其包括将熔融原料从喷射喷嘴喷射到造粒部中的近似球形核,在粒径达到0.4〜3.0mm的平均粒径之后进料,形成颗粒。 还公开了一种改进的造粒机。
    • 5. 发明授权
    • Granule producing apparatus
    • 颗粒生产设备
    • US4332211A
    • 1982-06-01
    • US175214
    • 1980-08-04
    • Susumu NiohHiroshi HirayamaTetsuzo HondaTakashi NagahamaMasaki NaruoTeruo YoshidaGisaburo SiotuYoshinori SatoKenji Toyama
    • Susumu NiohHiroshi HirayamaTetsuzo HondaTakashi NagahamaMasaki NaruoTeruo YoshidaGisaburo SiotuYoshinori SatoKenji Toyama
    • B01J2/16B01J8/24C05C9/00B05C5/00
    • B01J8/245B01J2/16C05C9/005Y10S118/05
    • A granule producing apparatus comprises: a container; an exhaust means provided to the top of the container; a space in the upper interior of the container for separating solid material from gases; a space for a fluid bed in the lower interior of the container; a porous floor immediately below the fluid bed space for defining the lower limit of the fluid bed; an air chamber beneath the porous floor for supplying air streams to form the fluid bed; a means for supplying jet stream of air, provided below the fluid bed air stream supply chamber; a plurality of parallelly arranged funnels, said each funnel consisting of an inverse truncated cone and a cylindrical pipe connected to the lower end of the cone, said upwardly enlarged cone opens into the interior of the container with its upper end merging with the porous floor, said each cylindrical pipe having its lower end connected to the jet stream supply means; a means disposed within the upper portion of the cylindrical pipe of each funnel for spraying liquid under pressure into the jet air stream so that the sprayed liquid adheres to the granules and solidifies as it dries; a means fitted to the side wall of the container for supplying granules into the fluid bed space; and a means fitted to the side wall of the container for discharging the granules treated out of the fluid bed space.
    • 一种颗粒制造装置,包括:容器; 设置在容器顶部的排气装置; 在容器的上部内部的空间,用于将固体材料与气体分离; 在容器的下部内部的流化床的空间; 位于流化床空间正下方的多孔地板,用于限定流化床的下限; 在多孔地板下方的空气室供应气流以形成流化床; 提供在流化床气流供应室下方的用于供应喷气流的装置; 多个平行布置的漏斗,所述每个漏斗由反锥形锥体和连接到锥体的下端的圆柱形管组成,所述向上扩大的锥体开口进入容器的内部,其上端与多孔层合并, 所述每个圆柱形管的下端连接到喷射流供应装置; 设置在每个漏斗的圆柱形管的上部的装置,用于将压力下的液体喷射到喷射空气流中,使得喷射的液体粘附到颗粒并在其干燥时固化; 装在容器侧壁上的装置,用于将颗粒供给到流化床空间中; 以及装配到容器的侧壁上的装置,用于排出在流化床空间内处理的颗粒。
    • 6. 发明授权
    • Method for detecting clogging and granulation method
    • US5964901A
    • 1999-10-12
    • US981401
    • 1997-12-16
    • Kimikazu KidoTetsuzo Honda
    • Kimikazu KidoTetsuzo Honda
    • B01J2/04B01J2/16B01J8/18B01J8/24B65G53/66C05G3/00C05G5/00C07C273/02C07C273/14C07C275/02C05B19/00C05C7/02
    • B01J8/1809B01J2/16B01J8/1818B65G53/66C05G3/0058C07C273/14B01J2208/0007B01J2208/00539B01J2219/00247
    • There is disclosed a method for detecting clogging of air feed pipes, comprising air feed pipes (15), each having an outlet (13) for jetting air into a granulation section (1), and jetting nozzles (13), each situated at the center of the air outlet of a said air feed pipe for jetting a liquid of a molten raw material (e.g. molten urea), wherein, in jetting the liquid of the molten raw material from the jetting nozzles into the granulation section to carry out granulation,(a) an orifice section (14) is provided at a lower part of each of the air feed pipes (15), a section for taking up orifice rear pressure (16) is provided in each air feed pipe and is located downstream of the orifice section, and a section for taking up orifice forward pressure (17) is provided upstream of the orifice section, and(b) the pressure difference between the orifice forward pressure and the orifice rear pressure is measured, to detect clogging of the air feed pipes based on an abnormality in the pressure difference regarding the air feed pipes. There is also disclosed a granulation method, comprising monitoring the pressure difference by the above method, stopping the feed of a liquid of a molten raw material to the air feed pipe whose pressure difference is abnormal, and compensating the amount corresponding to the stoppage with the remaining function. The detection method is a method capable of detecting accurately a malfunction related to jetting of air in the granulation of urea or the like. Further, the granulation method is a granulation method wherein, accurately, in response to the occurrence of a malfunction related to the jetting of air, the feed of a raw material liquid to the malfunctioned section is stopped, and the raw material liquid to be fed to the jet nozzles having other normal air outlets is suitably increased, thereby allowing continuous operation, with the productivity before the occurrence of the malfunction kept.
    • 8. 发明授权
    • Granulating process
    • 造粒工艺
    • US4353730A
    • 1982-10-12
    • US207646
    • 1980-11-17
    • Bunji KinnoHiroshi HirayamaTetsuzo Honda
    • Bunji KinnoHiroshi HirayamaTetsuzo Honda
    • B01J2/16C05B19/00C05C1/02C05C7/02C05C9/00C05D1/00C05G3/00C05B15/00B21B15/02
    • C05B19/00B01J2/16C05C1/02C05C9/005C05G3/0011
    • Disclosed is a granulating process which comprises the steps of providing a plurality of spouted bed granulation zones arranged in series and one or more fluidizing zones for cooling and drying purposes each disposed between two adjacent ones of the granulation zones, introducing priming granules of a particulate material into the first-stage granulation zone while spraying thereinto an adherent and solidifiable liquid together with a gas stream to enlarge the priming granules, cooling and drying the enlarged granules in the succeeding fluidizing zone, passing the resulting granules through the other granulation zones and fluidizing zones successively, and withdrawing the granules enlarged to a desired particle size from the last-stage granulation zone. Also disclosed is an apparatus for carrying out this granulating process.
    • 公开了一种造粒方法,其包括提供串联布置的多个喷射床造粒区和一个或多个流化区,用于冷却和干燥目的,每个流化区设置在两个相邻的造粒区之间,引入颗粒材料的引发颗粒 进入第一级造粒区,同时与气流一起喷雾粘附和固化的液体以扩大起动颗粒,冷却和干燥后续流化区中的增大的颗粒,使得到的颗粒通过其它造粒区和流化区 并将颗粒从最后阶段的造粒区中提取出所需的颗粒尺寸。 还公开了一种用于进行该造粒工艺的装置。