Page 8 - Eyüpoğlu - Online Katalog 2020
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MOLECULAR SIEVE (desccant)                                                    MOLECULAR SIEVE (desccant)                                           

         Descrpton                                                                                                               Molecular Seve 3A \ 4A \5A
         Commonly used desccants n the IG ndustry to prevent                                                                    Chemcal Formula:KnNa12-n[(AlO2)12(SO2)12]Xh2o
         the nsde glass surfaces from foggng as because of                                                                      A knd of alkal-metallc, slcon-alumnum compounds, It could absorb the molecular whch crtcal
         condensaton of Desccants are used n IG unts mosture                                                                  dameter s not more than 3 \ 4 \ 5 \ angstroms.
         vapor or organc vapors that may be n the nter pane                                                                     Applcaton
         space Mosture vapor mght be trapped n the Inter pane                                                                   Molecular Seve Dryng of varous lquds(such as ethanol) Ar dryng;
         space durng The manufacturng of the IG unt or can                                                                      Dryng of refrgerants; Dryng of natural gas, methane gas; Dryng of unsaturated hydrocarbons and
         permeate through the edge seal whle the IG unt s n use.                                                               pyrolyss gas, ethylene, acetylene, propylene, butadene.
         Organcs that o-gas n the nter pane space can react                                                                    Advantages
         wth glass surfaces that become damp the water wth                                                                       The Characterstcs of  Instantaneous temperature, hgh adsorpton rate, t wll start workng whle
         molecular seves Hghly porous crystals wth unform pore                                                                 relatve humdty up to 12%, n certan crcumstances
         szes of 3, 4, 5, and 10 Angstroms each havng a strong                                                                   (nsde the hollow glass), and ts adsorpton rate wll reach about 19%, the temperature wll reach
         anty for a specfc sze of a molecule. The 3-Å molecular                                                              more than 40 C.
         seve’s structure allowswater vapor adsorpton yet                                                                        used as a fll - n hollow spacer bars that are perforated to allow contact between the desccant fll and
         excludes most other molecules.                                                                                            the vapor
                                                                                                                                   The capacty of desccants s lmted, and any water vapor nfltratng the nter pane space after the
        The 4-Å molecular seve has a slghtly hgher water vapor capacty but also adsorbs                                        a saturated can result n fog on the nternal surface of the IG unt.
        larger molecules ncludng oxygen and ntrogen; t s, therefore, less commonly used n IG edge seals.                     Desccants n IG unts prolong the wndows’ servce lfe by adsorbng mosture

        Molecular seves have a hgh adsorpton capacty at a low relatve humdtyare therefore partcularly
        useful n dry  envronments such as the nter pane glazng space. These crystals are characterzed
        by a three-dmensonal pore system, wth pores of precsely defned dameter.

        Ths dameter s n the dmenson of the sze of molecules such as water, CO2 and H2S.
        The pores can be adjusted to  precsely determned unform openngs allowng for molecules
        smaller than ts pore dameter to be adsorbed whlst excludng larger molecules, hence the name
         “molecular seve”.
        The derent pore szes of synthetc zeoltes open up a wde range of possbltes n terms of
        "sevng" molecules of derent sze or shape gases & lquds.


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