SYSTEM AND METHOD FOR PREPARING HIGH-PURITY DIVANADIUM PENTOXIDE POWDER
    7.
    发明公开
    SYSTEM AND METHOD FOR PREPARING HIGH-PURITY DIVANADIUM PENTOXIDE POWDER 有权
    用于制备高纯度五氧化二钽粉末的系统和方法

    公开(公告)号:EP3243798A1

    公开(公告)日:2017-11-15

    申请号:EP16742778.0

    申请日:2016-01-28

    IPC分类号: C01G31/02

    摘要: The present invention provides a system and method for preparing high-purity vanadium pentoxide powder. Industrial grade vanadium pentoxide is converted to vanadium oxytrichloride by low temperature fluidizing chlorination, wherein chlorinating gas is preheated via heat exchange between fluidizing gas and chlorination flue gas, and an appropriate amount of air is added to enable a part of carbon powder to combust so as to achieve a balanced heat supply during the chlorination, thereby increasing the efficiency of chlorination and ensuring good selectivity in low temperature chlorination. The vanadium oxytrichloride is subjected to purification by rectification, ammonium salt precipitation and fluidized calcination, thereby obtaining high-purity vanadium pentoxide, wherein the ammonia gas produced during calcination is condensed and then recycled for ammonium salt precipitation. The system and method have advantages of favorable adaptability to a raw material, less pollution, low energy consumption in production and low operation cost, stable product quality and so on, and are suitable for large-scale production of high-purity vanadium pentoxide powder with a purity of above 4N.

    摘要翻译: 本发明提供了制备高纯度五氧化二钒粉末的系统和方法。 通过低温流化氯化将工业级五氧化二钒转化为三氯氧化钒,其中通过流化气体与氯化烟气之间的热交换预热氯化气体,并加入适量的空气以使一部分碳粉燃烧 在氯化过程中实现均衡供热,从而提高氯化效率并确保低温氯化中的良好选择性。 通过精馏,铵盐沉淀和流化煅烧对三氯氧化钒进行纯化,由此获得高纯度五氧化二钒,其中将煅烧期间产生的氨气冷凝,然后再循环用于铵盐沉淀。 该系统和方法具有原料适应性好,污染少,生产能耗低,运行费用低,产品质量稳定等优点,适用于大规模生产高纯度五氧化二钒粉末 纯度在4N以上。

    SYSTEM FOR CONTINUOUS FEEDING AND DISCHARGING OF SOLID MATERIAL TO AND FROM A VESSEL OPERATING UNDER HIGH PRESSURE
    8.
    发明公开
    SYSTEM FOR CONTINUOUS FEEDING AND DISCHARGING OF SOLID MATERIAL TO AND FROM A VESSEL OPERATING UNDER HIGH PRESSURE 审中-公开
    用于在高压下操作的固体物料连续输入和排出系统

    公开(公告)号:EP3242741A1

    公开(公告)日:2017-11-15

    申请号:EP15728935.6

    申请日:2015-02-23

    申请人: Baser, Swapneshu

    发明人: Baser, Swapneshu

    摘要: A continuous feeding and discharging system for solid material under high pressure is provided. The system includes a feeding assembly, a high pressure vessel, and a discharging assembly. The feeding assembly includes a raw material hopper that feeds solid raw material, a CO2 feeder that feeds dry ice, and a mixer that mixes the solid raw material with the dry ice to form an impermeable mixture. The high pressure vessel performs an extraction process under a supercritical condition to extract soluble components from the solid raw material. The discharging assembly includes a discharging extruder that receives the solid residue discharged from the high pressure vessel, a binder liquid feeder that feeds binder liquid to mix with the solid residue to form a uniform mixture and compacts the mixture to form impermeable pellets of residue, and a discharging valve that discharges the impermeable pellets of residue from the discharging extruder.

    A PROCESS FOR FEEDING A POLYMERISATION CATALYST
    9.
    发明公开
    A PROCESS FOR FEEDING A POLYMERISATION CATALYST 审中-公开
    供给聚合催化剂的方法

    公开(公告)号:EP3241611A1

    公开(公告)日:2017-11-08

    申请号:EP16167880.0

    申请日:2016-05-02

    申请人: Borealis AG

    IPC分类号: B01J8/00 B01J8/22 C08F10/00

    摘要: The present invention is directed to a process for feeding a polymerisation catalyst into a polymerisation reactor (7), comprising the steps of: (i) maintaining a catalyst slurry comprising a diluent and a solid catalyst component in a catalyst feed vessel (4); (ii) continuously withdrawing a stream of the catalyst slurry from the catalyst feed vessel (4); and (iii) introducing the withdrawn portion of the catalyst slurry into the polymerisation reactor (7), wherein the catalyst slurry is transferred by using a valveless piston pump (5) from the catalyst feed vessel (4) into the polymerisation reactor (7); the diluent has a dynamic viscosity of from 0.01 to 20 mPas at the conditions within the catalyst feed vessel (4), and wherein the catalyst slurry is transferred along a substantially vertical path downwards from the catalyst feed vessel (4) to the reactor (7).

    摘要翻译: 本发明涉及一种将聚合催化剂加入聚合反应器(7)的方法,包括以下步骤:(i)将包含稀释剂和固体催化剂组分的催化剂浆料保持在催化剂加料容器(4)中; (ii)从催化剂进料容器(4)中连续排出催化剂浆料流; 和(iii)将取出的催化剂淤浆部分引入聚合反应器(7)中,其中通过使用无阀活塞泵(5)将催化剂淤浆从催化剂进料容器(4)转移到聚合反应器(7)中, ; 稀释剂在催化剂进料容器(4)内的条件下具有0.01至20mPas的动态粘度,并且其中催化剂浆料沿着基本垂直的路径从催化剂进料容器(4)向下转移至反应器(7) )。