Molecular sieves

01/07/2008
Knowing the plants of Saudi Aramco well and being in charge of product management of CECA SILIPORITE molecular sieves, I would like to comment on the article by Ahmed Ghazal (“Common errors can cause mol-sieve desiccant deterioration”; OGJ, Nov. 26, 2007, p. 62) to prevent misunderstanding.Molecular sieves remove dissolved water (speaking about liquids) but should not be in contact with entrained water, as the article relates. Entrained water will saturate them quite fast, given the likely huge amount of water entrained, may lead to local temperature peaks leading to faster aging, and may bring all kind of “aggressive” molecules (e.g., amines) with it, destroying e...
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