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        塔盤設計廠家

        2021-07-22 16:03:32
        塔盤設計廠家
        詳細介紹:


        各種塔板只有在一定的氣液流量范圍內操作,才能保證氣液兩相有效接觸,從而得到較好的傳質效果??捎盟遑摵尚阅軋D來表示塔板正常操作時氣液流量的范圍,塔盤設計廠家展示圖中的幾條邊線所表示的氣液流量限度為:



        (1)漏液線。氣體流量低于此限時,液體經開孔大量泄漏。

        (2)過量霧沫夾帶線。氣體流量高于此限時,霧沫夾帶量超過允許值,會使板效率顯著下降。

        (3)液流下限線。若液體流量過小,則溢流堰上的液層高度不足,會影響液流的均勻分布,致使板效率降低。

        (4)液流上限線。液體流量太大時,液體在降液管內停留時間過短,液相夾帶的氣泡來不及分離,會造成氣相返混,板效率降低。

        (5)液泛線。氣液流量超過此線時,引起降液管液泛,使塔的正常操作受到破壞。

        如果塔板的正常操作范圍大,對氣液負荷變化的適應性好,就稱這些塔板的操作彈性大。浮閥塔和泡罩塔的操作彈性較大,篩板塔稍差。塔盤設計廠家介紹的這三種塔型在正常范圍內操作的板效率大致相同。




        All kinds of trays can only be operated within a certain gas-liquid flow rate range to ensure the effective contact of the gas-liquid two-phase, so as to obtain a better mass transfer effect. The tray load performance graph can be used to indicate the gas-liquid flow range during normal operation of the tray. The gas-liquid flow limit indicated by the several side lines in the diagram shown by the tray designer is:

        (1) Leakage line. When the gas flow rate is lower than this limit, a large amount of liquid leaks through the opening.

        (2) Excessive mist entrainment line. When the gas flow is higher than this limit, the amount of mist entrainment exceeds the allowable value, which will significantly reduce the efficiency of the plate.

        (3) Lower limit line of liquid flow. If the liquid flow is too small, the height of the liquid layer on the overflow weir will be insufficient, which will affect the uniform distribution of the liquid flow and reduce the efficiency of the plate.

        (4) Upper limit of liquid flow. When the liquid flow rate is too large, the residence time of the liquid in the downcomer is too short, and the bubbles entrained in the liquid phase will not be separated in time, which will cause the gas phase back mixing and reduce the efficiency of the plate.

        (5) Flood line. When the gas-liquid flow exceeds this line, it will cause the downcomer to flood, which will damage the normal operation of the tower.

        If the normal operating range of the trays is large and the adaptability to gas-liquid load changes is good, the operating flexibility of these trays is said to be large. The operation flexibility of the valve tower and bubble tower is relatively large, and the sieve plate tower is slightly inferior. The plate efficiencies of the three types of towers introduced by the tray design manufacturers are roughly the same in the normal range.

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        上一篇:氣體冷卻塔塔盤設計2021-07-22
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