Distillation column and method for promoting a uniform vapor flow
    2.
    发明授权
    Distillation column and method for promoting a uniform vapor flow 失效
    蒸馏塔和促进均匀蒸气流的方法

    公开(公告)号:US06475349B1

    公开(公告)日:2002-11-05

    申请号:US09405327

    申请日:1999-09-24

    IPC分类号: B01D314

    CPC分类号: B01D3/008 B01D3/16

    摘要: A distillation column and method in which a plurality of beds of structured packing are provided within a column shell and are configured to contact liquid and vapor phases of the mixture to be distilled. At least one liquid redistributor is located between the beds of structured packing to redistribute the liquid of the liquid phase and an annular collector is located above the liquid distributor to direct liquid to the liquid distributor. The annular collector acs as a constriction to produce a central flow of the vapor phase which can result in decreased performance of overlying beds of structured packing. In order to overcome this potential problem, a truncated bed of structured packing is provided directly above the annular collector to promote a more uniform distribution of such central vapor flow in a transverse direction of the column shell. The truncated bed of structured packing is fabricated from layers of structured packing each having a height less than that of packing layers of overlying beds of structured packing.

    摘要翻译: 一种蒸馏塔和方法,其中在柱壳内设置多个规整填料床,并且构造成接触要蒸馏的混合物的液相和蒸汽相。 至少一个液体再分布器位于规整填料床之间,以重新分配液相的液体,并且环形收集器位于液体分配器上方以将液体引导至液体分配器。 环形收集器作为收缩部产生气相的中心流,这可导致规整填料的上层床的性能降低。 为了克服这个潜在的问题,在环形收集器的正上方提供了一个规整填料的截顶床,以促进这种中心蒸气流在柱壳的横向方向上更均匀的分布。 规整填料的截顶床由具有小于规整填料上覆层的填料层的高度的规整填料层制成。

    Atmospheric gas separation method
    5.
    发明授权
    Atmospheric gas separation method 失效
    大气分离法

    公开(公告)号:US5396772A

    公开(公告)日:1995-03-14

    申请号:US209851

    申请日:1994-03-11

    摘要: A method of cryogenically separating a mixture of atmospheric gases within a distillation column system having at least one distillation column. In accordance with the method, liquid and gaseous phases of the mixture of atmospheric gases to be separated are countercurrently passed through structured packing. The column is operated with a pressure greater than 2 bars and with a vapor rate of the vapor phase that is less than a critical vapor rate at which the column floods and which varies with the liquid rate of the liquid phase. Minimum and critical vapor rates at which the column floods are set in accordance with experimentally derived data for maximum column utilization in terms of packing volume or column throughput. Additionally, separation performance in terms of HETP increases with the increase in pressure so that a lower than prior art height of structured packing can be used to obtain a particular separation.

    摘要翻译: 在具有至少一个蒸馏塔的蒸馏塔系统内低温分离大气气体混合物的方法。 根据该方法,待分离的大气气体的混合物的液相和气相逆流通过规整填料。 柱子的压力大于2巴,气相的蒸汽速率小于塔溢流时的临界蒸气速率,并随着液相的液体速率而变化。 根据实验导出的数据,根据包装体积或色谱柱通过量来最大色谱柱利用率设置色谱柱泛洪的最小和临界蒸气速率。 此外,HETP方面的分离性能随着压力的增加而增加,因此可以使用低于现有技术的规整填料的高度来获得特定的分离。

    Structured packing
    9.
    发明授权
    Structured packing 失效
    结构包装

    公开(公告)号:US06280819B1

    公开(公告)日:2001-08-28

    申请号:US09344647

    申请日:1999-06-25

    IPC分类号: B32B310

    摘要: The present invention provides a structured packing comprising a plurality of corrugated sheets and a plurality of flat, planar members alternating with and located between the sheets to inhibit turbulence in vapor ascending through the structured packing. The plurality of planar members are positioned so that at least lowermost transverse edges of the planar members and the corrugated sheets are situated at least proximal to one another as viewed when said structured packing is in use. Each of the planar members and the corrugated sheets has perforations sized to inhibit liquid and vapor flows but to allow pressure equalization. The planar members can be strip-like and positions at or near the top and bottom transverse edges of the corrugated sheets or can have the same length and width of the corrugated sheets. The size and number of perforations can be optimized for air separation applications.

    摘要翻译: 本发明提供了一种包括多个波纹片和多个平坦的平面构件的规整填料,所述平坦的平面构件与片材之间交替并且位于片材之间,以阻止通过规整填料上升的蒸气中的湍流。 多个平面构件被定位成使得平面构件和波纹板的至少最下侧的横向边缘至少位于彼此之间,当所述规整填料使用时观察。 平面构件和波纹板中的每一个都具有穿孔尺寸,以防止液体和蒸汽流动,但允许压力平衡。 平面构件可以是带状的,并且位于波纹片的顶部和底部横向边缘处或附近,或者可以具有相同的波纹片的长度和宽度。 穿孔的尺寸和数量可以针对空气分离应用进行优化。

    Liquid-vapor contact column
    10.
    发明授权
    Liquid-vapor contact column 失效
    液 - 气接触柱

    公开(公告)号:US5486318A

    公开(公告)日:1996-01-23

    申请号:US366350

    申请日:1994-12-29

    摘要: A liquid-vapor contact column comprising a column shell and one or more beds of structured packing located within the column shell. Each bed of structured packing includes a plurality of vertical stacks which are formed of at least two upper and lower levels of structured packing. The structured packing is partitioned to form the vertical stacks. When the structured packing is formed from corrugated sheet material, the vertical stacks can also be spaced from one another with the corrugated sheets making up the structured packing rotated 90.degree. with respect to boarding vertical stacks of structured packing. The partitions or the rotated arrangement of the packing inhibit liquid migration in a transverse, horizontal direction of the column. This promotes constant liquid and vapor flow characteristics through each of the vertical stacks of structured packing to resist widespread liquid channeling throughout the column.

    摘要翻译: 一种液 - 气接触柱,其包括柱壳和位于柱壳内的一个或多个规则填料床。 每个规整填料床均包括由至少两个上层和下层的规整填料形成的多个垂直叠层。 结构化填料被分隔形成垂直堆叠。 当规格填料由波纹板材形成时,垂直堆叠也可以彼此间隔开,使构成规整填料的波纹板相对于结构化填料的堆叠垂直堆叠旋转90°。 填料的隔板或旋转布置禁止液体沿塔的横向水平方向移动。 这通过规则填料的每个垂直堆叠促进恒定的液体和蒸汽流动特性,以抵抗整个塔的广泛的液体通道。