Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature
    152.
    发明授权
    Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature 有权
    用于两相反应的反应器,特别是用于在高压和高温下的尿素合成

    公开(公告)号:US06444180B1

    公开(公告)日:2002-09-03

    申请号:US09722029

    申请日:2000-11-27

    Abstract: A reactor for two-phase reaction, in particular for urea synthesis at high pressure and temperature of the type wherein a co-current flow of a gaseous phase and a liquid phase takes place, comprises a substantially cylindrical vertical external shell (2) in which is supported a plurality of superimposed horizontal perforated plates (6a-6e) in mutually spaced relationship and at least one opening (12a-12e) for liquid flow being defined in correspondence of each of the perforated plates. Advantageously the openings (12a-12e) for liquid flow are mutually offset so as to obtain a substantially zigzag preferential flow path for the liquid phase in the reactor.

    Abstract translation: 用于两相反应的反应器,特别是在其中发生气相和液相的并流流动的高压和高温下的尿素合成反应器包括基本上圆柱形的垂直外壳(2),其中 以相互间隔的关系支撑多个重叠的水平多孔板(6a-6e),并且用于液体流动的至少一个开口(12a-12e)对应于每个多孔板被限定。 有利地,用于液体流动的开口(12a-12e)相互偏移,以便获得用于反应器中的液相的基本上Z字形的优先流动路径。

    System and method for hydrothermal reactions-three layer liner
    153.
    发明申请
    System and method for hydrothermal reactions-three layer liner 失效
    水热反应的系统和方法 - 三层衬垫

    公开(公告)号:US20020084559A1

    公开(公告)日:2002-07-04

    申请号:US09753320

    申请日:2000-12-28

    Abstract: A system and method for performing hydrothermal treatment includes reactor vessel formed with a pressure bearing wall surrounding a reactor chamber. A liner protects the wall from exposure to temperature extremes, corrosives and salt deposits. The liner is formed with three layers: a non-porous, corrosion resistant primary layer; a porous layer; and a non-porous, secondary layer. The porous layer is sealed between the primary layer and the secondary layer. The liner is positioned in the reactor chamber with the secondary layer facing the pressure bearing wall of the reactor chamber and the primary layer facing the reactor chamber. Connectors extend through the wall of the reactor vessel and the secondary layer to allow a fluid to be pumped through the porous layer to maintain the temperature of the liner. The connectors also allow for sampling of the fluid within the porous layer to detect leaks in the primary layer.

    Abstract translation: 用于进行水热处理的系统和方法包括形成有围绕反应室的压力壁的反应堆容器。 衬管可以防止墙体暴露于极端温度,腐蚀性物质和盐沉积物中。 衬里形成三层:无孔,耐腐蚀的初级层; 多孔层; 和无孔的二级层。 多孔层被密封在主层和次层之间。 衬套定位在反应器室中,其中第二层面向反应器室的压力承受壁并且主层面向反应室。 连接器延伸穿过反应堆容器的壁和第二层,以允许流体被泵送通过多孔层以保持衬套的温度。 连接器还允许对多孔层内的流体进行采样以检测主层中的泄漏。

    Process for producing single wall nanotubes using unsupported metal catalysts
    154.
    发明授权
    Process for producing single wall nanotubes using unsupported metal catalysts 失效
    使用无载金属催化剂生产单壁纳米管的方法

    公开(公告)号:US06221330B1

    公开(公告)日:2001-04-24

    申请号:US08910495

    申请日:1997-08-04

    Abstract: A process for producing hollow, single-walled carbon nanotubes by catalytic decomposition of one or more gaseous carbon compounds by first forming a gas phase mixture carbon feed stock gas comprising one or more gaseous carbon compounds, each having one to six carbon atoms and only H, O, N, S or Cl as hetero atoms, optionally admixed with hydrogen, and a gas phase metal containing compound which is unstable under reaction conditions for said decomposition, and which forms a metal containing catalyst which acts as a decomposition catalyst under reaction conditions; and then conducting said decomposition reaction under decomposition reaction conditions, thereby producing said nanotubes.

    Abstract translation: 一种通过一种或多种气态碳化合物的催化分解来制备中空单壁碳纳米管的方法,首先形成一种气相混合物碳原料气体,其包含一种或多种具有1-6个碳原子的气态碳化合物,并且仅H ,O,N,S或Cl作为杂原子,任选与氢混合,以及含有气相金属的化合物,在用于所述分解的反应条件下不稳定,并且在反应条件下形成用作分解催化剂的含金属催化剂 ; 然后在分解反应条件下进行所述分解反应,从而制备所述纳米管。

    Apparatus for converting waste plastic into oil
    157.
    发明授权
    Apparatus for converting waste plastic into oil 失效
    将废塑料转化为油的设备

    公开(公告)号:US6066263A

    公开(公告)日:2000-05-23

    申请号:US41499

    申请日:1998-03-12

    Abstract: A safe and efficient hydrothermal reaction apparatus for converting waste plastic into oil is described herein. The apparatus comprises a receiver tank for containing therein a mixture of plastic and water; a high-pressure injection pump in communication with the receiver tank through a flow passage change-over valve, the flow passage change-over valve being in communication with a water injection passage; a reactor device including a curved piping in communication with the injection pump, the curved piping being provided with a heating means; and an effluent tank in communication with the reactor device through a pressure reducing valve. The flow rate of the mixture injected into the reaction device may be controlled by regulating the pressure reducing valve. Thermal decomposition of the mixture is performed in the reactor device under pressure and temperature conditions equal to, or above, a value by which a supercritical condition of water is achieved, and under the turbulent flow conditions generated partly by the curved piping.

    Abstract translation: 本文描述了一种用于将废塑料转化为油的安全有效的水热反应装置。 该装置包括用于在其中容纳塑料和水的混合物的接收罐; 高压注射泵,其通过流路切换阀与所述接收罐连通,所述流路转换阀与注水通道连通; 包括与注射泵连通的弯曲管道的反应器装置,弯曲管道设置有加热装置; 以及通过减压阀与反应器装置连通的污水箱。 可以通过调节减压阀来控制注入到反应装置中的混合物的流量。 混合物的热分解在反应器装置中在压力和温度条件下等于或高于实现超临界状态的水和在部分由弯曲管道产生的湍流条件下的值。

    Method and apparatus for waste destruction using supercritical water
oxidation
    158.
    发明授权
    Method and apparatus for waste destruction using supercritical water oxidation 失效
    使用超临界水氧化废物破坏的方法和设备

    公开(公告)号:US6030587A

    公开(公告)日:2000-02-29

    申请号:US076602

    申请日:1998-05-11

    Abstract: The invention relates to an improved apparatus and method for initiating and sustaining an oxidation reaction. A hazardous waste, is introduced into a reaction zone within a pressurized containment vessel. An oxidizer, preferably hydrogen peroxide, is mixed with a carrier fluid, preferably water, and the mixture is heated until the fluid achieves supercritical conditions of temperature and pressure. The heating means comprise cartridge heaters placed in closed-end tubes extending into the center region of the pressure vessel along the reactor longitudinal axis. A cooling jacket surrounds the pressure vessel to remove excess heat at the walls.Heating and cooling the fluid mixture in this manner creates a limited reaction zone near the center of the pressure vessel by establishing a steady state density gradient in the fluid mixture which gradually forces the fluid to circulate internally. This circulation allows the fluid mixture to oscillate between supercritical and subcritical states as it is heated and cooled.

    Abstract translation: 本发明涉及一种用于启动和维持氧化反应的改进的装置和方法。 将有害废物引入加压容器内的反应区。 将氧化剂,优选过氧化氢与载体流体,优选水混合,并加热混合物,直到流体达到温度和压力的超临界条件。 加热装置包括放置在沿着反应器纵向轴线延伸到压力容器的中心区域的封闭端管中的筒式加热器。 冷却套围绕压力容器以去除壁上的多余热量。 以这种方式加热和冷却流体混合物通过在流体混合物中建立稳态密度梯度而在压力容器的中心附近产生有限的反应区,其逐渐迫使流体在内部循环。 该循环允许流体混合物在被加热和冷却时在超临界和亚临界状态之间振荡。

    Method for restoring the functionality of equipment subjected to heavy
corrosion in a plant for the production of urea
    159.
    发明授权
    Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the production of urea 失效
    用于恢复用于生产尿素的设备遭受严重腐蚀的设备的功能性的方法

    公开(公告)号:US6010669A

    公开(公告)日:2000-01-04

    申请号:US793928

    申请日:1997-03-21

    Abstract: A method for repairing and restoring the functionality of equipment subjected to internal corrosion during its operation at high or medium pressure in a plant for the synthesis of urea. The method includes the cleaning of the corroded area, the formation of suitable supporting and/or holding surfaces for the placement of a new metallic lining, the formation of a new anticorrosive sealed off lining, obtained by positioning and welding flat elements and metallic plates which are suitably shaped and placed next to each other to become adapted to the internal profile of the equipment. The spaces and interstices below this new lining all communicate with at least one weep-hole present in the pressure resistant body. The entire repair is carried out through the manhole of the equipment and enables the restoring of its functionality for times similar to the normal duration of corresponding newly constructed equipment.

    Abstract translation: PCT No.PCT / EP95 / 03539 Sec。 371日期1997年3月21日 102(e)1997年3月21日PCT PCT 1995年9月8日PCT公布。 出版物WO96 / 09136 日期1996年3月28日在用于合成尿素的设备中在高压或中压操作期间内部腐蚀的设备的功能性的修复和恢复方法。 该方法包括清洁被腐蚀区域,形成用于放置新的金属衬里的合适的支撑和/或保持表面,形成通过定位和焊接扁平元件和金属板获得的新的防腐密封衬 适当地成形并且彼此相邻放置以适应于设备的内部轮廓。 这个新衬里下面的空间和间隙都与耐压体中存在的至少一个排水孔相通。 整个修理通过设备的人孔进行,并使其功能恢复类似于相应的新建设备的正常持续时间。

    Hot explosive consolidation of refractory metal and alloys
    160.
    发明授权
    Hot explosive consolidation of refractory metal and alloys 失效
    耐火金属和合金的热爆炸固结

    公开(公告)号:US5996385A

    公开(公告)日:1999-12-07

    申请号:US858958

    申请日:1997-05-20

    CPC classification number: B22F3/08 B01J3/04 B01J3/08 B22F3/087 B22F3/23 Y10S29/031

    Abstract: A method and apparatus for fabricating high density monolithic metal and oy billets. The process requires preheating precursor materials of metal or alloy billets by means of a combustion synthesis called Self-Propagating High-Temperature Synthesis (SHS). The reaction takes place in an insulated reaction vessel where the precursors, in a powder form, are heated to high temperatures. The precursors are then compacted to high density by means of pressure waves generated by detonation of an explosive. The method is capable of producing high purity tungsten and tungsten-based alloys of greater than 90% theoretical density.

    Abstract translation: 一种用于制造高密度单片金属和合金坯料的方法和装置。 该方法需要通过称为自传播高温合成(SHS)的燃烧合成来预热金属或合金坯料的前体材料。 反应发生在绝缘反应容器中,其中粉末形式的前体被加热到高温。 然后通过爆炸物爆炸产生的压力波将前体压实成高密度。 该方法能够产生理论密度大于90%的高纯度钨和钨基合金。

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