Mercury removal sorbent
AssigneeConocoPhillips Company
InventorsJoseph B. Cross, Glenn W. Dodwell, Marvin M. Johnson, Edward L. Sughrue, II, Jianhua Yao
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Abstract
A composition comprising a vanadium oxide compound and an alkali metal promoter loaded onto a porous support material is disclosed. Methods of making and using the composition to remove heavy metals or heavy metal containing compounds from a fluid stream are also provided. Such methods are particularly useful in the removal of mercury and mercury compounds from flue gas streams produced from the combustion of hydrocarbon-containing materials such as coal and petroleum fuels.
Claims25
A method of removing mercury or mercury containing compound from a fluid stream, said method comprising the step of:
- (a) contacting said fluid stream with a porous support material having incorporated onto, into, or onto and into a vanadium oxide compound and an alkali metal promoter for sorption of at least a portion of mercury or mercury containing compound, wherein the porous support having the vanadium oxide compound and the alkali metal promoter incorporated is not exposed to temperatures above 400° F. prior to and during the contacting.
A process for the removal of or mercury containing compound from a flue gas stream produced by the combustion of a hydrocarbon-containing fuel comprising the steps of:
- (a) contacting said flue gas stream with a first sorbent material comprising a porous support having incorporated onto, into, or onto and into a vanadium oxide compound and an alkali metal promoter for sorbing at least a portion of mercury or mercury containing compound present in said flue gas stream, wherein the porous support having the vanadium oxide compound and the alkali metal promoter incorporated is not exposed to temperatures above 400° F. prior to and during the contacting;
- and
- (b) contacting said flue gas with a second sorbent material different from said first sorbent material for sorbing at least a portion of said mercury-containing compound not sorbed during step (a).
Dependencies are inferred from the claim text.