Production of ammonium polyphosphates
    1.
    发明授权
    Production of ammonium polyphosphates 失效
    生产聚磷酸铵

    公开(公告)号:US3949058A

    公开(公告)日:1976-04-06

    申请号:US426902

    申请日:1973-12-20

    摘要: There is disclosed a method and apparatus for the production of ammonium polyphosphate solutions of high concentrations from phosphoric acid and ammonia. The process is ideally suited for the production of such solutions from wet-process phosphoric acid which has a P.sub.2 O.sub.5 content of from 56 to about 70 weight percent, impurity-free basis, and which, preferably, contains from 5 to about 50 percent of its phosphorus present as polyphosphoric acid. The method comprises introducing the phosphoric acid into a reactor bearing a Teflon liner and reacting it therein with vapors of ammonia while controlling the amount of ammonia from 0.2 to about 0.3 pound ammonia per pound of P.sub.2 O.sub.5 in the feed acid, sufficient to achieve a peak reaction temperature in the reactor between about 525.degree. and 775.degree.F., the absolute value of which is dependent on the bulk water content of the feed acid. The products from the reactor are quenched by direct contact with an aqueous solution of ammonium polyphosphate, additional ammonia is added to neutralize the phosphoric acid to a pH value between about 5.5 and about 8.5 and sufficient water is added to achieve a concentration of from 24 to about 55 weight percent P.sub.2 O.sub.5 in the aqueous solution. Preferably, the aqueous solution is continuously circulated, cooled and passed to a storage vessel which serves as a product accumulation and supply of circulating liquid. The preferred apparatus of the invention comprises a tubular reactor having inlet sparging means for the ammonia vapors and phosphoric acid to introduce these reactants into intimate contact at the inlet portion of the reactor. The reactor and the inlet spargers are formed of Teflon and it has been found that the Teflon provides a scale-resistant lining for the reactor surfaces such that the reactor can be operated for extended periods of time without requiring shutdown for cleaning and maintenance.

    摘要翻译: 公开了从磷酸和氨生产高浓度的多磷酸铵溶液的方法和装置。 该方法非常适用于从湿法磷酸生产这种溶液,该方法的P2O5含量为56〜70%(重量),不含杂质,优选含有5〜50% 磷作为多磷酸存在。 该方法包括将磷酸引入到具有特氟龙内衬的反应器中并与其中的氨气反应,同时控制氨的量在进料酸中每磅P2O5为0.2至约0.3磅氨,足以实现峰值反应 反应器中的温度在约525°至775°F之间,其绝对值取决于进料酸的体积含水量。 通过与多磷酸铵的水溶液直接接触来反应来自反应器的产物,加入另外的氨以将磷酸中和至约5.5至约8.5的pH值,并加入足够的水以达到从24至 在水溶液中约55重量%的P2O5。 优选地,水溶液被连续循环,冷却并传递到用作循环液体的产物积聚和供应的储存容器。 本发明的优选装置包括管式反应器,其具有用于氨蒸气和磷酸的入口喷射装置,以将这些反应物引入反应器入口部分的紧密接触。 反应器和入口喷射器由特氟隆形成,并且已经发现,特氟隆为反应器表面提供防垢衬里,使得反应器可以长时间运行而不需要关闭以进行清洁和维护。

    Method of producing ammonium polyphosphate
    2.
    发明授权
    Method of producing ammonium polyphosphate 失效
    生产聚磷酸铵的方法

    公开(公告)号:US4011300A

    公开(公告)日:1977-03-08

    申请号:US591056

    申请日:1975-06-27

    摘要: Phosphoric acids having H.sub.2 0/P.sub.2 O.sub.5 mole ratios of about 4.5 or less are converted to aqueous solutions of ammonium polyphosphates of which at least about 40 percent of the P.sub.2 O.sub.5 is present as acyclic polyphosphates. The reaction is conducted at 500.degree. to about 750.degree. F. sufficient to increase the polymeric P.sub.2 O.sub.5 content at least 10 percent by reacting a highly dispersed, unconfined acid spray with substantially anhydrous ammonia. High conversions to polymeric species are obtained while minimizing both reactor fouling when using impure wet-process acids, and corrosion occurring with either wet-process or "white" acids.

    Transportable cargo container
    3.
    发明授权
    Transportable cargo container 失效
    运输货物集装箱

    公开(公告)号:US5069352A

    公开(公告)日:1991-12-03

    申请号:US701585

    申请日:1991-05-15

    IPC分类号: B65D88/12

    CPC分类号: B65D88/121

    摘要: A substantially rigid inner container is positioned on a upper surface of a floor of an outer container. The inner container is sized to receive at least partial support from the outer container and to have a volume such that when filled to a maximum capacity the total weight of the inner container, outer container and cargo do not exceed a predetermined maximum weight.

    摘要翻译: 大体上刚性的内部容器定位在外部容器的地板的上表面上。 内部容器的尺寸设计成从外部容器接收至少部分支撑,并且具有容积使得当被容纳到最大容量时,内部容器,外部容器和货物的总重量不超过预定的最大重量。

    Apparatus and process for producing particulate sulfur
    4.
    发明授权
    Apparatus and process for producing particulate sulfur 失效
    用于生产颗粒硫的装置和方法

    公开(公告)号:US4863645A

    公开(公告)日:1989-09-05

    申请号:US102582

    申请日:1987-09-29

    IPC分类号: C01B17/02

    CPC分类号: C01B17/0237

    摘要: Apparatus for producing relatively large and dense, relatively dry sulfur particles from molten sulfur comprises a manifold having a number of small, spaced apart, molten sulfur discharge apertures which are sized, according to the rate and pressure head at which the molten sulfur is received, for enabling the sulfur flow from each aperture to be laminar. Included is a vessel for holding a quenching liquid, preferably water. The manifold is mounted above the vessel with the discharge apertures preferably about one quarter inch to about two inches above the quenching liquid surface. Means are included for continuously moving the manifold in a circular path while the moltlen sulfur is discharged from the manifold apertures so that the discharged streams continually contact different regions of the quenching liquid. A conveyor is connected to the vessel for removing particulate sulfur therefrom. Three stages of quenching liquid removal are provided, the first comprising a screen element, the second comprising a porous conveyor belt with an air blower, and the third comprising a conveyor belt with another air blower. Means are provided for adding quenching liquid into the vessel, without distrubing the liquid in the vessel, to maintain a constant liquid operating level in the vessel level. A sulfur recycling stage is provided to recycle sulfur particles which fall off the porous conveyor belt without being delivered to the third stage belt back to the porous belt.

    摘要翻译: 用于从熔融硫生产相对较大且致密的相对干燥的硫颗粒的装置包括具有许多小的间隔开的熔融硫排放孔的歧管,其根据接收熔融硫的速率和压头, 以使来自每个孔的硫流是层流的。 包括用于容纳淬火液体的容器,优选为水。 歧管安装在容器的上方,排放孔优选在淬火液体表面上方约四分之一英寸到约两英寸。 包括用于在歧管硫从歧管孔排出的同时将歧管连续地移动到圆形路径中的装置,使得排出的流连续地接触淬火液体的不同区域。 输送机连接到容器以从其中除去颗粒硫。 提供了三个阶段的淬火液体去除,第一阶段包括筛网元件,第二阶段包括具有鼓风机的多孔输送带,第三阶段包括具有另一鼓风机的输送带。 提供了用于将淬火液添加到容器中的装置,而不将容器中的液体分散,以保持在容器水平中恒定的液体操作水平。 提供硫回收阶段以再循环从多孔输送带脱落的硫颗粒,而不将其递送到第三级带回到多孔带。

    Process for the volumetric transfer of liquids
    6.
    发明授权
    Process for the volumetric transfer of liquids 失效
    液体体积转移过程

    公开(公告)号:US5033494A

    公开(公告)日:1991-07-23

    申请号:US512085

    申请日:1990-04-11

    IPC分类号: B67D7/02

    摘要: Apparatus is provided for transferring a liquid, particularly liquids, such as molten sulfur which are difficult to handle, from a liquid supply, such as a molten sulfur tank truck, to another location, such as a pug mill in which a sulfur/asphalt pavement material is blended. The apparatus comprises a relatively small transfer vessel, which is connected, through a shutoff valve, to the liquid for receiving a gravity flow of liquid therefrom, and an air compressor for pressurizing the transfer vessel through a pressurized air conduit. A check valve installed in the transfer vessel adjacent the liquid inlet of the vessel prevents the trasfer of liquid from the vessel back into the supply when the vessel is pressurized. An electrically-controlled valve in the pressurized air conduit enables an associated control unit to control the flow of pressurized air into the vessel. When the vessel is connected to the source and is unpressurized, liquid flows from the source into the vessel through the check valve; pressurization of the vessel by the compressor then closes the check valve and forces the liquid contained in the vessel out of the vessel and to the other location. An elevated loop in the pressurized air conduit prevents liquid from the liquid supply or the vessel from flowing into the compressor. A corresponding process is provided for transferring a liquid, in discrete amounts or "slugs," from a liquid supply to another location.

    摘要翻译: 提供了一种装置,用于将液体,特别是液体,例如难以处理的熔融硫从液体供应源(例如熔融硫磺罐车)转移到另一个位置,例如其中硫/沥青路面 材料混合 该装置包括相对较小的转运容器,其通过截止阀连接到用于接收液体的重力流的液体,以及用于通过加压空气管道对转移容器加压的空气压缩机。 安装在转移容器中的止回阀邻近容器的液体入口防止当容器被加压时来自容器的液体的转移回到供应中。 加压空气管道中的电控阀使得相关联的控制单元能够控制进入容器的加压空气的流动。 当容器连接到源并且未加压时,液体通过止回阀从源流入容器; 压缩机对容器进行加压,然后关闭止回阀并迫使容纳在容器中的液体离开容器和另一个位置。 加压空气管道中的升高的回路防止来自液体供应或容器的液体流入压缩机。 提供了一种相应的方法,用于将液体从液体供应转移到另一位置,以不连续的量或“s。”。

    Aqueous ammonia process and mixing apparatus therefor
    7.
    发明授权
    Aqueous ammonia process and mixing apparatus therefor 失效
    氨水工艺及其混合设备

    公开(公告)号:US4752452A

    公开(公告)日:1988-06-21

    申请号:US474003

    申请日:1983-03-10

    摘要: The invention is a process and apparatus useful for preparing an aqueous ammonia solution at a temperature below the boiling point thereof by single stage dilution of anhydrous ammonia with water. In the invention, an anhydrous ammonia fluid comprising ammonia vapor is mixed with water to provide an aqueous ammonia fluid at a first temperature above the boiling point of said aqueous ammonia fluid, the aqueous ammonia fluid is cooled to a second temperature above the boiling point of said aqueous ammonia fluid, and the cooled aqueous ammonia fluid is then indirectly contacted with liquid anhydrous ammonia to further cool said aqueous ammonia fluid to a temperature below its boiling point and thereby heat the liquid anhydrous ammonia to vaporize at least a portion thereof. The heated anhydrous ammonia fluid is utilized in the process of this invention to provide the aqueous ammonia fluid. An apparatus for carrying out the above process is also described, including a novel mixing nozzle for use in mixing the anydrous ammonia fluid with water to provide an aqueous ammonia fluid at a first temperature above the boiling point of said aqueous ammonia fluid.

    摘要翻译: 本发明是用于通过用水对无水氨单步稀释来在低于沸点的温度下制备氨水溶液的方法和装置。 在本发明中,将包含氨蒸汽的无水氨流体与水混合,以在高于氨水流体沸点的第一温度下提供氨水流体,将氨水流体冷却至高于沸点的第二温度 所述氨水流体,然后将冷却的氨水流体与液体无水氨间接接触,以进一步将氨水流体冷却至低于其沸点的温度,从而加热液态无水氨以蒸发其至少一部分。 在本发明的方法中使用加热的无水氨流体来提供氨水流体。 还描述了用于执行上述方法的装置,包括用于将任何氨流体与水混合以在高于氨水流体沸点的第一温度下提供氨水流体的新型混合喷嘴。

    Multi-phase fluid flow divider
    8.
    发明授权
    Multi-phase fluid flow divider 失效
    多相流体分流器

    公开(公告)号:US4528919A

    公开(公告)日:1985-07-16

    申请号:US454833

    申请日:1982-12-30

    IPC分类号: A01C23/02 F17D1/00

    摘要: The instant invention relates to an apparatus and method for dividing a flowing multi-phase fluid to provide at least two separate fluid streams wherein each fluid stream has substantially the same ratio of phases. This apparatus and method are especially useful for dividing a fluid having a gaseous and a liquid phase e.g. ammonia, to provide at least two separate fluid streams wherein each fluid stream has about the same weight ratio of liquid phase to gaseous phase. The apparatus includes a fluid inlet chamber in fluid communication with at least two separate fluid outlet chambers through a plurality of fluid conduits. Each of the fluid conduits has a fluid conduit inlet opening communicating with the fluid inlet chamber and a fluid outlet opening communicating with one of the fluid outlet chambers. The fluid conduit inlet openings are arrayed in a plurality of groups, wherein each group has at least two members, and the fluid conduits are adapted to provide that each fluid outlet chamber is in fluid communication with only one member of each group of fluid conduit inlet openings. This apparatus and method may be used for distributing equal amounts of ammonia as a mixture of ammonia vapor and ammonia liquid, to the soil. A system for distributing ammonia to the soil which includes the apparatus is also disclosed.

    摘要翻译: 本发明涉及一种用于分离流动的多相流体以提供至少两个分离的流体流的装置和方法,其中每个流体流具有基本相同的相的比例。 该装置和方法对于分离具有气相和液相的流体是特别有用的。 氨,以提供至少两个分离的流体流,其中每个流体流具有与液相与气相大致相同的重量比。 该装置包括通过多个流体导管与至少两个分离的流体出口室流体连通的流体入口室。 每个流体导管具有与流体入口室连通的流体导管入口和与流体出口室中的一个连通的流体出口。 流体导管入口开口以多个组排列,其中每组具有至少两个构件,并且流体导管适于提供每个流体出口室仅与每组流体导管入口中的仅一个构件流体连通 开口 该装置和方法可用于将等量的氨作为氨蒸气和氨液的混合物分配到土壤中。 还公开了一种用于将氨分散到包括该装置的土壤中的系统。