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248                       Applied Process Design for Chemical and Petrochemical Plants























      Figure 9-6SS.  Flexigrid@' Style 3 high-efficiency structured packing.   Figure 9-6TT.  Flexigrid@ Style  2  high-capacity  structured  packing.
      Used by permission of Koch Engineering Co.,  Inc., Bull. KFG-2.   Used by permission of  Koch Engineering Co., Inc., Bull. KFG-2.


















          EF-25A Grid is used to process coking-prone feeds and up to 40% solids slurries   Because Grid is free to expand and contract without damage under thermal
                                                               stress, Grid can maintain its structural integrity in turbulent vapor streams as
                                                               hot as 1000°F.
                    Figure 9-6UU. Glitsch-gridTM packing, Style EF-25A. Used by permission of Glitsch, Inc., Bull. 163L84B.

                                                      Table 9-1
                                Chemical Stoneware and Chemical Porcelain Raschig Rings
                                             __                       -                       ~~
      Normal       Wall      O.D. and     Approx. Avg.   Approx. Avg.    Approx. Avg.    Percent     Equivalent
        Size,    Thickness,   Length,     Number per      Weight per     Surface Area,   Free Gas   Spher. Dim.
        In.         In.         In.           Ft3          Ft3, Lb**        F2/Ft3        Space        Dp, In.
         %          X?          w           10,700            52             124           65           0.48
         M          %e          ?k           5,600          48-52            100           68           0.57
         w          MZ          %            3,100            46              78           69           0.65
         1          M            1           1,350            42              58           72           0.87
         1%         XF'         1%             670            46              44           71           1.10
         1%         !4          1%             390            40              36           73           1.40
         2          !4           2             165            39              28           74           1.75
         3          :x           3              50            35              19           77           2.65
       +3(D)        M           3               74            67              29           60           2.65
       +3@)         M           3               64            58              25           66           2.65
         4          w           4               25            40
                                                                 ~~~
                                                                           ~
                                                                    ~
                                                                   ~
                                                                                                   ~
                                                                                                          ~~
                 ~~   ~                ~   ~   ~   ~~  ~~~___~____~         ~   ~~   ~~~   ~~~   ~~~_____~
                                                                                                     ~
                                                                                                    ~
      M, 2%, 4, and 6 in. available on special order. The 3-in., 4in., and &in. O.D. sizes are also made with ribbed or corrugated outside surfaces. The %in.,
      4in., and Gin. sizes can be made in lengths up to 12 in., on special order.
      **Porcelain Rings are about 5% heavier than Stoneware. These weight3 are the average for both.
      +Data for stacked arrangement. "D" indicates diamond pattern. "S" indicates square pattern.
      Original by permission, M. Leva, Ref. 40 and Bulletin TP-54, US. Stoneware Co., Akron, OH.; updated CTP-1 dated 9/88, by  permission  of Norton
      Chemical Process Products Corp.
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