Process for removing sulfur oxides with an absorbent which contain an anionic clay
AssigneeAkzo N.V.
InventorEmanuel H. van Broekhoven
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Abstract
Disclosed are hydrocarbon conversion catalyst compositions, such as fluidizable cracking catalyst compositions, containing an anionic clay, e.g. a clay having a hydrotalcite, and ettringite or a hydrocalumite structure, for the conversion of sulphur-containing feedstocks, the anionic clay serving as sulphur oxides binding material. Also disclosed are absorbents containing the anionic clay embedded in a matrix. The absorbents may be used to purify sulphur oxides-containing gases.
Claims9
A process comprising treating a gas which contains SO.sub.2, SO.sub.3 or a mixture thereof with an absorbent comprising 1 to 99 percent by weight of an anionic clay, and 1 to 99 percent by weight of matrix material, wherein said anionic clay has a crystalline structure of the pyroaurite-sjogrenite-hydrotalcite group, the hydrocalumite group or the ettringite group.
Dependencies are inferred from the claim text.