PHENYLENE ETHER OLIGOMER COMPOSITION
    1.
    发明申请

    公开(公告)号:US20200308346A1

    公开(公告)日:2020-10-01

    申请号:US16902831

    申请日:2020-06-16

    摘要: A phenylene ether oligomer composition is disclosed comprising, a phenylene ether oligomer having an external amine content of less than or equal to 1.5 weight percent; and a residual solvent in an amount of 10 to 10000 parts per million by weight, based on the weight of the phenylene ether oligomer composition; wherein the phenylene ether oligomer composition has an intrinsic viscosity of 0.03 to 0.13 deciliter per gram; a glass transition temperature of 135 to 175° C., or a combination thereof

    Methods and devices for falling film reactors with integrated heat exchange
    4.
    发明授权
    Methods and devices for falling film reactors with integrated heat exchange 有权
    具有集成热交换功能的降膜反应器的方法和装置

    公开(公告)号:US08211377B2

    公开(公告)日:2012-07-03

    申请号:US12918699

    申请日:2009-02-27

    摘要: Disclosed is a method of performing a reaction involving a gaseous reactant stream and a falling film liquid reactant stream by providing a reactor comprising a first multicellular extruded body oriented with its cells extending in parallel in a vertically downward direction from a first end of the body to a second end, the body having a first plurality of cells open at both ends of the body and a second plurality of said cells closed at one or both ends of the body, the second plurality of cells being arranged in one or more groups of contiguous cells and cooperating to define at least in part at least one fluidic passage extending through the body; and further flowing a liquid reactant film down inner surfaces of the first plurality of cells while flowing a gaseous reactant stream up or down the centers of the first plurality of cells while flowing a first heat exchange fluid through the at least one fluidic passage. Various alternative devices for performing the method are also disclosed.

    摘要翻译: 公开了一种通过提供包括第一多细胞挤出体的反应器进行包括气态反应物流和降膜液体反应物流的反应的方法,该第一多细胞挤出体的细胞沿其垂直向下的方向从身体的第一端平行延伸, 第二端,所述主体具有在所述主体的两端处打开的第一多个单元,以及在所述主体的一端或两端处封闭的第二多个所述单元,所述第二多个单元布置成一组或多组连续的 并且配合以至少部分地限定延伸穿过身体的至少一个流体通道; 并且在使第一热交换流体流过所述至少一个流体通道的同时使第一多个单元的中心向上或向下流动气态反应物流,同时使液体反应物膜向下流动。 还公开了用于执行该方法的各种替代装置。

    Method for modernizing a urea production plant
    7.
    发明授权
    Method for modernizing a urea production plant 有权
    尿素生产设备现代化的方法

    公开(公告)号:US07674933B2

    公开(公告)日:2010-03-09

    申请号:US12051529

    申请日:2008-03-19

    申请人: Federico Zardi

    发明人: Federico Zardi

    IPC分类号: C07C273/04 B01J10/02 F28D7/00

    摘要: A method for modernizing a urea production plant including a urea synthesis reactor, a stripping unit and at least one condensation unit. The method includes providing: means in the condensation unit for substantially condensing at least a portion of a flow comprising ammonia and carbon dioxide in vapor phase leaving the stripping unit; a second stripping unit; means for feeding a first portion of a reaction mixture flow comprising urea, carbamate and free ammonia in aqueous solution leaving the reactor to the first stripping unit; means for feeding a second portion of the reaction mixture flow leaving the reactor to the second stripping unit; and means for feeding at least a portion of a flow comprising ammonia and carbon dioxide in vapor phase leaving the second stripping unit directly to the synthesis reactor. A de-bottlenecking of the high-pressure section downstream of the synthesis reactor may be achieved, improving production capacity.

    摘要翻译: 一种使尿素生产设备现代化的方法,包括尿素合成反应器,汽提单元和至少一个冷凝单元。 该方法包括提供:在冷凝单元中的装置,用于基本上冷凝包含氨和二氧化碳的气流的至少一部分,离开汽提单元; 第二剥离单元; 用于将含有尿素,氨基甲酸酯和游离氨的反应混合物流的第一部分进料到水溶液中以使反应器进入第一汽提单元的装置; 用于将离开反应器的反应混合物流的第二部分进料到第二汽提单元的装置; 以及用于在汽相中进料至少一部分包含氨和二氧化碳的流的装置,其将第二汽提单元直接送入合成反应器。 可以实现合成反应器下游的高压段的脱瓶颈,提高生产能力。

    METHOD AND APPARATUS FOR PRODUCING SOLID PRODUCT
    8.
    发明申请
    METHOD AND APPARATUS FOR PRODUCING SOLID PRODUCT 失效
    生产固体产品的方法和装置

    公开(公告)号:US20090246102A1

    公开(公告)日:2009-10-01

    申请号:US12471236

    申请日:2009-05-22

    IPC分类号: B01J19/00 B01J10/02

    摘要: Provided is a production method and a production apparatus using a method for producing a solid product by a reaction of gaseous raw materials with a plurality of components including a step of conducting the reaction using a reactor disposed in a vertical direction; a step of feeding the gaseous raw materials with a plurality of components from the upper part of the reactor; a step of, in the lower part of the reactor, forming a seal gas layer composed of a gas having a high density and fed continuously from the lower part of the reactor; a step of discharging an exhaust gas containing a by-product gas generated by the reaction and unreacted gaseous raw materials from somewhere in the upper part of the formed seal gas layer; and a step of accommodating a solid product in the seal gas layer of the lower part.

    摘要翻译: 本发明提供一种使用气态原料与多种成分的反应生成固体成分的方法的制造方法和制造装置,其包括使用在垂直方向设置的反应器进行反应的工序; 从反应器的上部向气态原料供给多个组分的步骤; 在反应器的下部,形成由高密度气体构成的密封气体层,并从反应器的下部连续进料的工序; 从形成的密封气体层的上部的某处排出含有由反应产生的副产物气体和未反应的气态原料的排气的步骤; 以及在下部的密封气体层中容纳固体产物的步骤。