| 摘要 |
<p>In a process for removing cumene vapor from a gaseous stream containing it the stream is contacted with hydrophobic, macroreticular, water-insoluble, crosslinked polymer comprising 20 % to 100 % by weight of the polymer, of divinylbenzene units, the balance if any being ethylvinylbenzene and/or styrene units, neither individually being present in an amount of more than 50 % by weight. Thereafter, the cumene is desorbed from the polymer by a process which involves passing steam into contact with the polymer which is thus regenerated and the cumene can be recovered from the regenerant.
<??>Although the polymer, which is usually in bead form in a bed, must be substantially dry, i.e. contain no more than 25 % by weight of water based on polymer plus water, before its first contact with the cumene-containing gases there is no need to subject the polymer to an intermediate drying step before having been regenerated, it is re-used to absorb more cumene. </p> |
