Fluid induced transverse flow magnetically stabilized fluidized bed
    1.
    发明授权
    Fluid induced transverse flow magnetically stabilized fluidized bed 失效
    流体诱导横向磁稳定流化床

    公开(公告)号:US4546552A

    公开(公告)日:1985-10-15

    申请号:US607408

    申请日:1984-05-07

    摘要: Solids comprising a magnetically stabilized fluidized bed are transported in a direction transverse to the flow of the fluidizing fluid exiting the bed by contacting at least a portion of said solids with fluidizing fluid which enters the bed with a velocity component in the direction of solids flow; i.e. the transverse flow direction. In a preferred embodiment, the fluidizing fluid entering the bed is passed through a distribution means containing propulsion passages slanted in the desired direction of solids flow which serve to orient the fluidizing fluid in the transverse flow direction. Use of this invention eliminates the need for the costly and inconvenient pneumatic, hydraulic and mechanical transport devices employed in the prior art. Solids attrition and elutriation are also reduced.

    摘要翻译: 包含磁稳定化流化床的固体通过使至少一部分所述固体与流入床的流化流体接触,所述流体沿固体流动方向上的速度分量沿横向于流出床流化流体的方向输送; 即横向流动方向。 在优选实施例中,进入床的流化流体通过分配装置,该分配装置包含倾斜于所需固体流动方向的推进通道,该推进通道用于使流化流体沿横向流动方向定向。 使用本发明消除了对现有技术中使用的昂贵和不便的气动,液压和机械输送装置的需​​要。 固体消耗和淘析也减少了。

    Fluidity of a continuous transverse flow magnetically stabilized
fluidized bed
    2.
    发明授权
    Fluidity of a continuous transverse flow magnetically stabilized fluidized bed 失效
    连续横流磁稳定流化床的流动性

    公开(公告)号:US4543733A

    公开(公告)日:1985-10-01

    申请号:US345094

    申请日:1982-02-02

    摘要: In a magnetically stabilized fluidized bed in which the bed particles continuously move transverse to the flow of the fluidizing fluid, the bed particles have increased fluidity when the bed is operated at or substantially near the locus of transition between the bubbling and stabilized regimes of said bed. More specifically, the particulate bed comprising a transverse flow magnetically stabilized fluidized bed process has greater fluidity when the bed is operated such that the ratio of the difference between the transition velocity and the operating velocity to the difference between the transition velocity and the normal minimum fluidization velocity ranges between -0.1 and +0.5. The increased fluidity facilitates the movement of solids within a vessel as well as the transfer of solids to other vessels. Stabilization of the bed, which prevents and substantially eliminates fluid bypassing and solids backmixing, may be effected externally by an applied magnetic field or internally by permanently magnetized magnetic particles within the bed. The present invention has application to a wide variety of processes (particularly separation and filtration-processes) wherein small size fluidizable, absorbent particles can be used without encountering the high pressure drops normally associated with non-stabilized beds.

    摘要翻译: 在其中床颗粒连续地横向流化流体流动的磁稳定化流化床中,当床在或基本上靠近所述床的起泡和稳定化状态之间的过渡轨迹操作时,床颗粒具有增加的流动性 。 更具体地说,当床被操作时,包括横流磁稳定流化床方法的颗粒床具有较大的流动性,使得转变速度和操作速度之差与过渡速度与正常最小流化之间的差值之比 速度范围在-0.1和+0.5之间。 增加的流动性有助于容器内的固体的移动以及将固体转移到其它容器。 防止和基本上消除流体旁路和固体回混的床的稳定性可以通过施加的磁场或内部由床内的永久磁化的磁性颗粒在外部实现。 本发明可应用于各种各样的方法(特别是分离和过滤方法),其中可以使用小尺寸可流动的吸收性颗粒,而不会遇到通常与非稳定化床相关的高压降。

    Continuous countercurrent fluid-solids contacting process stabilized by
a magnetic field
    3.
    发明授权
    Continuous countercurrent fluid-solids contacting process stabilized by a magnetic field 失效
    通过磁场稳定的连续逆流流体 - 固体接触过程

    公开(公告)号:US4247987A

    公开(公告)日:1981-02-03

    申请号:US79219

    申请日:1979-09-26

    摘要: The present invention relates to a process for continuous countercurrent contacting with magnetically stabilized fluidized beds. More particularly, the invention relates to the operation of a magnetically stabilized bed with continuous solid addition and removal. The bed particles which include a magnetizable component are stabilized against gas by-passing and solids back-mixing (except possibly for the flow or movement of the solids near entrance or exit ports or near fluid injection zones) during countercurrent contacting by the use of an applied magnetic field. The process of the invention is particularly suited for carrying out separation processes. The use of the applied magnetic field in such processes enables one to use small size fluidizable, adsorbent particles without encountering high pressure drops. The small adsorbent particles having a magnetic component give faster transfer of the sorbed species from the contacting fluid than with larger adsorbent particles which allows for a closer approach to equilibrium.

    摘要翻译: 本发明涉及一种与磁稳定流化床连续逆流接触的方法。 更具体地,本发明涉及具有连续固体添加和去除的磁稳定床的操作。 包括可磁化组分的床颗粒在逆流接触期间通过使用可固化组分稳定而不受气体旁路和固体反混(除了可能在入口或出口附近或靠近流体注入区附近的固体的流动或移动) 施加磁场。 本发明的方法特别适用于进行分离过程。 在这种方法中使用所施加的磁场使得能够使用小尺寸可流动的吸附剂颗粒,而不会遇到高压降。 具有磁性组分的小吸附剂颗粒使吸附物质从接触流体中得到的速度比使用更接近平衡的更大吸附剂颗粒更快地传递。

    Continuous chromatographic separations in a magnetically stabilized
fluidized bed
    4.
    发明授权
    Continuous chromatographic separations in a magnetically stabilized fluidized bed 失效
    磁稳定流化床中的连续层析分离

    公开(公告)号:US4443231A

    公开(公告)日:1984-04-17

    申请号:US345095

    申请日:1982-02-02

    摘要: A multicomponent feed mixture may be separated into its components continuously by injecting said feed mixture and a carrier fluid into a magnetically stabilized fluidized bed containing adsorbent particles admixed or composited with magnetizable particles. The bed particles continuously move transverse to the flow of the carrier fluid, which serves to fluidize the bed, such that the components of the feed mixture are transported downstream varying distances from the injection point depending upon the adsorption and desorption characteristics of said components. Product streams comprising a portion of the carrier fluid and a portion of the feed mixture containing at least a portion, preferably a major portion, of one of the components can then be recovered from the surface of the bed, the most strongly adsorbed component being transported (and thus recovered) farthest from the injection point.

    摘要翻译: 将多组分进料混合物可以通过将所述进料混合物和载体流体注入到包含与可磁化颗粒混合或复合的吸附剂颗粒的磁稳定流化床中而连续分离成其组分。 床颗粒连续地移动到载体流体的流动,其用于使床流化,使得进料混合物的组分根据所述组分的吸附和解吸特性从喷射点下游不同的距离输送。 包含载体流体的一部分和包含至少一部分,优选主要部分的一部分组分的进料混合物的产物流可以从床的表面回收,最强吸附的组分被运送 (并因此恢复)离注射点最远。