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    • 1. 发明授权
    • Process for the reducing emissions during prilling of material such as
ammonium nitrate
    • 在造粒诸如硝酸铵等材料时减少排放的过程
    • US5514307A
    • 1996-05-07
    • US280245
    • 1994-07-25
    • Arthur R. Shirley, Jr.Phillip A. ForsytheWilliam M. GilesJohn A. Phillips
    • Arthur R. Shirley, Jr.Phillip A. ForsytheWilliam M. GilesJohn A. Phillips
    • B01J2/04C05C1/02C05C9/00C05G3/00
    • C05G3/0058B01J2/04C05C1/02C05C9/005
    • This invention relates to an improvement in prilling whereby water is atomized into a prill tower to affect faster solidification of the prill, and in particular, the outside surface of the prill by providing an increased rate of surface cooling while reducing the required air flows in the tower. This results in a major reduction in air pollution potential in the form of both fume and particulate while at the same time allowing substantial production rate increases. Specifically, the invention relates to quick freezing the outside surface of the prill by flash evaporation of finely atomized water particles on the surface of the prill or in extremely close proximity to the prill to greatly lower the vapor pressure at the prill's surface and by continued flash evaporation to enhance cooling so as to allow upward flowing air to be reduced to a point where micro-prills which are formed in prilling can settle in the prill tower while obtaining the same or increased production rates. More specifically, the present invention relates to an improvement in melt prilling of water sensitive materials, in particular, ammonium nitrate, urea, potassium nitrate and other water soluble melts which normally absorb water or go into solution readily at ambient conditions in their solid state.
    • 本发明涉及造粒的改进,其中水被雾化成造粒塔,以通过提供增加的表面冷却速率来影响颗粒的更快凝固,特别是造粒的外表面,同时减少所需的空气流 塔。 这导致大气中的烟气和微粒形式的空气污染潜力的大幅减少,同时允许大量的生产率增加。 具体而言,本发明涉及通过在颗粒表面上微细雾化的水颗粒的闪蒸或者非常接近于颗粒的方式快速冷冻颗粒的外表面,以大大降低颗粒表面的蒸汽压力并持续闪光 蒸发以增强冷却,以允许向上流动的空气减少到在造粒中形成的微小颗粒可以在获得相同或增加的生产率的同时沉淀在造粒塔中。 更具体地说,本发明涉及水溶性材料,特别是硝酸铵,尿素,硝酸钾和其它水溶性熔体的熔融造粒的改进,其通常在固态环境条件下吸收水或溶解在溶液中。
    • 4. 发明授权
    • Process for granulation of molten materials
    • 熔融材料造粒工艺
    • US4424176A
    • 1984-01-03
    • US427723
    • 1982-09-29
    • Arthur R. Shirley, Jr.Frederick T. Carney, Jr.
    • Arthur R. Shirley, Jr.Frederick T. Carney, Jr.
    • B01J2/12
    • B01J2/12C01B17/0216C01B17/0237Y02P20/124
    • The granulation of molten material using a heat transfer process whereby solid particles are heated, dried, or cooled by a gas: Particles are repeatedly lifted and dropped as, for example, in flighted rotary drums. By forced recirculation, gas is passed through showering particles generally perpendicular to their plane of fall. Examples show gas forced to contact particles in this manner imparts an overall volumetric heat transfer coefficient to a rotary drum superior to that expected from classical literature or presently operating rotary drum heat exchangers. Disclosure teaches gas temperature adjustment between forced recirculations. Technique usage will reduce exchanger capital cost, increase energy efficiency, and reduce pollution problems. Also, prewetting of the particles in certain instances can be utilized to effect substantially increased pseudo volumetric heat transfer coefficients when cooling non-hygroscopic materials.
    • 使用传热过程对熔融材料进行造粒,其中固体颗粒被加热,干燥或被气体冷却:颗粒被重复地提升和下降,例如在旋转的转鼓中。 通过强制再循环,气体通过大致垂直于其下降平面的淋浴颗粒。 实施例显示以这种方式强制接触颗粒的气体赋予旋转鼓的总体积传热系数优于传统文献或目前操作的旋转鼓式热交换器所预期的。 泄露教导了强制循环之间的气体温度调节。 技术使用将降低交换机资本成本,提高能源效率,减少污染问题。 而且,当冷却非吸湿性材料时,在某些情况下,可以利用颗粒的预润湿来实现显着提高的假体积传热系数。
    • 5. 发明授权
    • Granulation and coating by improved method of heat removal
    • 通过改进的除热方法制粒和涂层
    • UST980005I4
    • 1979-03-06
    • US850588
    • 1977-11-11
    • Arthur R. Shirley, Jr.
    • Arthur R. Shirley, Jr.
    • B01J2/00B01J2/12C01B17/02C05C9/00
    • B01J2/12B01J2/006C01B17/0237C01B17/0248C05C9/005
    • an improved process for the granulation or coating of hygroscopic or nonhygroscopic materials where melt is sprayed onto cascading granules of common or uncommon substrate in an enclosed vessel such as a rotary drum preferably with lifting flights which provide maximum mixing of the granules and the atmosphere enclosed in the unit and where heat given off by solidification of the melt is absorbed by evaporation of water which is atomized as an extremely fine mist into areas of the vessel which are not subtended by falling granules. Evaporation is effected without impingement of the mist on the granules or vessel internals. Air for evaporation is pulled through the vessel concurrent with the flow of granules and its moisture content is regulated below the critical humidity of the granules throughout the vessel. Some recycle of undersize granules discharged from the vessel is maintained for size control; however, examples show the recycle rate decreased by 87 percent over recycle cooled processes as 73 percent of the heat evolved is removed by evaporation of water mist. An equation is developed which mathematically represents the thermodynamics of the process and specific values are presented for variables when granulating sulfur or urea.
    • 7. 发明授权
    • Spray header and nozzle assembly
    • 喷头和喷嘴组件
    • US5108034A
    • 1992-04-28
    • US233932
    • 1988-08-15
    • Andrew M. HueyArthur R. Shirley, Jr.
    • Andrew M. HueyArthur R. Shirley, Jr.
    • B01J2/12B05B1/24
    • B01J2/12B05B1/24
    • A spray header and nozzle assembly which includes a first elongated tubular member and a second elongated tubular member of a smaller diameter than the first tubular member coaxially disposed within the first tubular member to form an annular space between the first and second tubular members and a plurality of spray nozzle assemblies in fluid communication with the inside of the second tubular member. The spray nozzle assemblies are perpendicularly disposed to the axis of both tubular members and recessed into the annular space. Also, the nozzle assemblies include a first tube extending a predetermined distance beyond the circumference of the first tubular member and a second tube of a smaller diameter than the first tube coaxially disposed within the first tube and recessed into the first tube.
    • 一种喷雾头和喷嘴组件,其包括第一细长管状构件和直径小于同轴地设置在第一管状构件内的第一管状构件的第二细长管状构件,以在第一和第二管状构件之间形成环形空间,并且多个 的喷嘴组件与第二管状构件的内部流体连通。 喷嘴组件垂直地设置在两个管状构件的轴线上并且凹入环形空间中。 此外,喷嘴组件包括延伸超过第一管状构件的圆周的预定距离的第一管和直径小于同轴地设置在第一管内并凹入第一管的第一管的直径的第二管。