Mercury removal from flue gas streams using treated sorbents
First Claim
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1. A method for modifying the properties of a sorbent comprising:
- washing a sorbent with a washing solution so as to achieve an exchange of ions between the sorbent and the washing solution; and
applying a halogen compound to the sorbent that has been washed with the washing solution to achieve a predetermined concentration of the halogen on the sorbent.
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Abstract
A method for modifying the properties of a sorbent comprising washing a sorbent with a washing solution so as to achieve an exchange of ions between the sorbent and the washing solution, and applying a halogen compound to the sorbent that has been washed with the washing solution to achieve a predetermined concentration of the halogen on the sorbent.
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Citations
31 Claims
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1. A method for modifying the properties of a sorbent comprising:
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washing a sorbent with a washing solution so as to achieve an exchange of ions between the sorbent and the washing solution; and applying a halogen compound to the sorbent that has been washed with the washing solution to achieve a predetermined concentration of the halogen on the sorbent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A sorbent for the removal of mercury from a gaseous flue stream prepared by a process comprising:
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washing a sorbent with a washing solution so as to achieve an exchange of ions between the sorbent and the washing solution; and applying a halogen compound to the sorbent that has been washed with the washing solution to achieve a predetermined concentration of the halogen on the sorbent. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method for removing mercury from a gaseous flue stream comprising:
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introducing a sorbent to a gaseous flue stream, wherein the gaseous flue stream contains mercury; and facilitating removal of mercury from the gaseous flue stream by adsorption of the mercury onto the sorbent; wherein the sorbent comprises a sorbent washed with a washing solution so as to achieve an exchange of ions between the sorbent and the washing solution, treated with a halogen compound to achieve a predetermined concentration of the halogen on the sorbent, and milled to a size suitable for injection into the gaseous flue stream.
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Specification