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Sulfur Adsorbents and Catalysts

 

Sulfacat® is a catalytically active material with a carbon substrate. This adsorbent has proven performance for removing H2S, CS2, light mercaptans, t-Butyl mercaptans, sulfides, disulfides, and H2Se (hydrogen selenide). This adsorbent was specially developed for removing sulfur compounds from streams that do not contain oxygen. As a result of a unique and careful control of production process, Sulfacat® offers superior properties for the removal of sulfur from a variety of gases and liquids.

Molecular Sieve Adsorption

 

By use of regenerable temperature swing adsorption.  Sulfur compounds of H2S and Mercaptans can be removed from natural gas and light hydrocarbons through the use of 5A and 13X molecular sieves.  This is an effective method of purification of your light hydrocarbon stream to attain a finished product that can be then sold commercially.

Promoted Alumina Adsorption

 

Selective Adsorption of H2S, COS, CS2, CO2 from light hydrocarbon gas or liquids.   These specially impregnated aluminas are very effective in purification of liquid condensate, LNG, LPG, ethylene and propylene streams.   The sulfur removal is achieved through chemisorption or physical adsorption and can reduce sulfur levels to less than 20 ppbv.

Iron Oxide Catalystic Desulfurization

 

Desulphurization is based on ferric hydroxide with the reduction reaction

 

ferric-(III)-hydroxide : 2 Fe(OH)3 + H2S à2Fe(OH)2 + S + 2 H2O

 

Precipitation of sulphide: Fe(OH)2+ H2S àFeS + 2 H2O

 

The ferric hydroxide binds the hydrogen sulphide immediately during its formation. Hydrogen sulphide can be oxidized to elemental sulphur.

 

In the second step divalent iron reacts with hydrogen sulphide forming dispersed iron sulphide, noticeable as a blackening of the fermenting residue