Flooding reduction on a tubular heat exchanger
    1.
    发明授权
    Flooding reduction on a tubular heat exchanger 失效
    在管式热交换器上的泛洪减少

    公开(公告)号:US5791404A

    公开(公告)日:1998-08-11

    申请号:US691725

    申请日:1996-08-02

    IPC分类号: F28D7/16 F28D21/00 F28F9/22

    摘要: An asymmetrical, or non-uniform arrangement of heat exchanging tubes in a second stage heat exchanger of an integrated flue gas treatment system provides improved flow characteristics and reduces or eliminates flooding caused by the counter-flow of upwardly rising flue gases and downwardly falling reagent and condensate through the heat exchanging tubes. The non-uniform spacing produces a non-uniform velocity profile with at least one low velocity region in each row, allowing reagent and condensate to drain downward at said low velocity region, thereby preventing high gas phase pressure drop caused by the onset of flooding. Embodiments are provided in which one of every six tubes are removed from each row in a uniform array of tubes, or one of every four tubes are removed from each row in a uniform array of tubes. Other asymmetrical, or non-uniform spacings are possible.

    摘要翻译: 整合烟气处理系统的第二级热交换器中的热交换管的不对称或非均匀布置提供了改进的流动特性,并且减少或消除了由向上升高的烟道气和向下滴下的试剂的逆流引起的淹水, 通过热交换管冷凝。 不均匀的间距产生了每行中至少有一个低速区域的不均匀的速度分布,允许试剂和冷凝物在所述低速区域向下排放,从而防止由淹水开始引起的高气相压降。 提供了这样的实施例,其中每六个管中的一个管以均匀的管阵列从每排排除,或者每个管中的每一个之一以均匀的管阵列被移除。 其他不对称或不均匀的间距是可能的。

    Segmented heat exchanger flue gas treatment
    3.
    发明授权
    Segmented heat exchanger flue gas treatment 失效
    分段换热器烟气处理

    公开(公告)号:US5534230A

    公开(公告)日:1996-07-09

    申请号:US270705

    申请日:1994-07-05

    摘要: A system for treating a flue gas includes a first condensing heat exchanger located in the housing for removing heat from flue gas as the flue gas is downwardly passed therethrough. A first collection tank is located in the housing below the first heat exchanger for collecting liquid and particulate. A second heat exchanger is located in the housing for condensibly removing pollutants from the flue gas as the flue gas is upwardly passed through the second heat exchanger. A second collection tank is located in the housing below the second heat exchanger for collecting liquid and particulate.

    摘要翻译: 用于处理烟气的系统包括位于壳体中的第一冷凝热交换器,用于当烟道气向下通过时从烟道气中去除热量。 第一收集罐位于第一热交换器下面的壳体中,用于收集液体和颗粒。 第二热交换器位于壳体中,用于当烟道气向上通过第二热交换器时从烟道气体中冷凝去除污染物。 第二收集罐位于第二热交换器下面的壳体中,用于收集液体和颗粒。

    Two stage downflow flue gas treatment condensing heat exchanger
    6.
    发明授权
    Two stage downflow flue gas treatment condensing heat exchanger 失效
    二级下流烟气处理冷凝式换热器

    公开(公告)号:US5510087A

    公开(公告)日:1996-04-23

    申请号:US270968

    申请日:1994-07-05

    摘要: A two-stage downflow flue gas treatment condensing heat exchanger system allows for flue gas to be passed into a two-stage housing at an upper end of the housing. The flue gas is channeled through a first stage of the housing having a first condensing heat exchanger which cools the flue gas. The flue gas is then channeled through a second stage having a second condensing heat exchanger which is located directly beneath the first stage and the first condensing heat exchanger for further cooling the flue gas. The flue gas travels in a downward direction only through the housing and exits the housing at the lower end of the housing beneath the second stage. A collection tank is located beneath the second stage of the housing for collecting liquids, condensate, particulate and reaction product.

    摘要翻译: 两级下流烟气处理冷凝热交换器系统允许烟道气进入壳体上端的两级壳体。 烟道气被引导通过壳体的第一级,其具有冷却烟道气的第一冷凝热交换器。 烟道气然后被引导通过第二阶段,该第二阶段具有位于第一阶段正下方的第二冷凝热交换器和用于进一步冷却烟道气的第一冷凝热交换器。 烟道气仅沿着壳体向下行进,并在壳体的下端在第二级下方离开壳体。 收集罐位于壳体的第二级下方,用于收集液体,冷凝物,颗粒和反应产物。