Sulfur absorbents and process for removing sulfur from fluid streams
AssigneePhillips Petroleum Company
InventorsTed H. Cymbaluk, Dennis R. Kidd, Gerhard P. Nowack, Gary A. Delzer
Life of this patent
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Abstract
A novel composition comprising zinc oxide and at least one metal phosphate that can be effectively used to remove sulfur compounds from a fluid stream by contacting said fluid stream under suitable absorption conditions with this novel composition. Also, a novel method is described for making a composition comprising mixing with zinc oxide at least one metal phosphate followed by the addition of a dilute acid to form a paste or paste like material having a desired consistency for agglomeration.
Claims15
A sulfur absorption composition consisting essentially of zinc oxide and at least one metal phosphate selected from the group consisting of Group IIA phosphates, Group IVB phosphates, Group IIIA phosphates and Group VIII phosphates, wherein said zinc oxide is present in the range of from about 65 parts by weight of the total combined weight of said zinc oxide and said at least one metal phosphate to about 95 parts by weight of the total combined weight of said zinc oxide and said at least one metal phosphate.
A sulfur absorption composition comprising zinc oxide and a coprecipitate of a Group IVB phosphate and a metal phosphate selected from the group consisting of Group IIIA phosphates and Group VIII phosphates, wherein said zinc oxide is present in the range of from about 65 parts by weight of the total combined weight of said zinc oxide and said coprecipitate to about 95 parts by weight of the total combined weight of said zinc oxide and said coprecipitate.
A method of making a sulfur absorption composition comprising:
- mixing zinc oxide and at least one metal phosphate selected from the group consisting of Group IIA phosphates, Group IVB phosphates, Group IIIA phosphates and Group VIII phosphates, to form a mixture wherein said zinc oxide is present in the range of from about 65 parts by weight of the total combined weight of said zinc oxide and said at least one metal phosphate to about 95 parts by weight of the total combined weight of said zinc oxide and said at least one metal phosphate;
- and
- adding to the mixture a suitable amount of suitable acid to form a paste having a desired consistency.
A method of making a sulfur absorption composition comprising:
- coprecipitating a Group IVB phosphate and a metal phosphate selected from the group consisting of Group IIIA phosphates and Group VIII phosphates to form a coprecipitate of said Group IVB phosphate and said metal phosphate;
- mixing said coprecipitate with zinc oxide to form a mixture of said coprecipitate and said zinc oxide wherein said zinc oxide is present in the range of from about 65 parts by weight of the total combined weight of said zinc oxide and said coprecipitate to about 95 parts by weight of the total combined weight of said zinc oxide and said coprecipitate;
- and
- adding to said mixture a suitable amount of diluted concentrated nitric acid to form a paste having the desired consistency.
Dependencies are inferred from the claim text.