Schematic Drawing of Typical Dry Desiccant Dehydration Process

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    Fig. 5.15Two towsolid deshours, thtwo toweapplicatiotime is slsaturatedprocess o

    F

    To designtime per gas. Afteone cycleon the bathe crossvendors o

    ematic d

    5 illustrates twers are requi

    iccant, watee material be

    ers. While onon of heat thlightly less thd, the secondof drying the

    Fig. 5.15Sc

    n a silica geltower before

    er establishine, the bulk vasis of the su-sectional arof the desicc

    rawing o

    the typical eqired for gas r is absorbedecomes fullyne tower is ohrough a smahan the adso

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    chematic dr

    l dehydratione switching tng the cycle tolume of de

    uperficial gasrea of the towcant usually

    of typical

    quipment fordehydrationd onto the suy saturated won adsorptionall slipstreamorption time been fully regues uninterru

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    n system, it towers. Thistime and thesiccant can bs velocity, anwer by the dprovide the

    l dry desi

    r a dry desic. As the gas

    urface of thewith water. Fn, the other tm of gas andof the first tgenerated. T

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    ypical dry d

    is necessarys is usually 8e amount of wbe estimatednd the heigh

    determined bdesign criter

    iccant de

    ccant processflows throu material. A

    For this reasotower is bein

    d subsequent ower. Thus,

    The towers ar

    desiccant deh

    y to select the8 to 12 hourswater to be r

    d. The diameht of the toweulk volume ria and perfo

    ehydratio

    s for dehydragh one towefter adsorbinon, the proceng regeneratcooling. Thwhen one to

    re then switc

    hydration p

    e duration ofs for fully waremoved froeter of the toer is determiof the desicc

    orm the desig

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    ating naturaler containingng for severaess incorporated by the he regeneratiower is fullyched, and th

    process.

    f the on-streater-saturate

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