What are the consequences of too high sulfur content in the feed gas for pressure swing adsorption?
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Generally, desulfurization is carried out before pressure swing adsorption. What impact does poor performance of the desulfurization unit have on pressure swing adsorption? ?
If the sulfur content is too high, the adsorbent will become ineffective after a short period of use. H2S is difficult to desorb from molecular sieves
It not only affects the lifespan of the adsorbent but also impacts the purity of the entire device’s output
Sulfides cause permanent poisoning of the adsorbent.
Hydrogen sulfide reacts chemically with oxygen inside the adsorption tower to form elemental sulfur, which blocks the micropores of the adsorbent and causes it to become ineffective, that is, the adsorbent is poisoned. The protection of the adsorbent in the PSA process is not reliable enough, thus posing a risk to long-term stable production. 2H2S+O2 → 2S +2H2O 2H2S+SO2 → 2H2O+3S
This needs to be desulfurized first; there is a wet desulfurization technology available nowadays. It is possible to completely remove inorganic sulfur, and 50% removal of organic sulfur can also be achieved