Removal of impurities from hydrocarbon streams
AssigneeNorton Chemical Process Products Corporation
InventorsJohn S. Reid, Thomas Szymanski
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Abstract
The invention provides media for absorption of phosphate and metal contaminants from a hydrocarbon stream and a method of making such media. The media comprise alumina with relatively minor amounts of calcia and magnesia and are made by a process in which the minor components or precursors of such components are dispersed in a gelled sol of a hydrated alumina such as boehmite.
Claims10
Absorbent media comprising from 50 to 96% by weight of alumina and from 50 to 4% by weight of alkaline earth metal oxides selected from calcia and magnesia present in calcia to magnesia weight ratios of from 90:10 to 50:50, said media having a BET surface area of at least 100 m2/gm.
A method of making absorption media which comprises:
- a) forming a peptized aqueous slurry mixture of from 50-97% by weight of a boehmite with from 50 to 3% by weight of a mixture of calcium carbonate and magnesium carbonate wherein the relative weight proportions of the calcium and magnesium carbonates are from 10:1 to 50:50, the weights of the boehmite and carbonate mixture being based on the solids weight in the slurry;
- b) shaping the peptized slurry to form the desired media shapes;
- and
- c) drying to remove water and then firing the shapes at a temperature of 650 to 850° C.
Dependencies are inferred from the claim text.