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US 2015/0147246 A1Published application
Filtration medium and process for filtering a fluid stream
AssigneeMilliken & Company
InventorsShulong Li, Richard A. Mayernik, Xinfei Yu
Life of this patent
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Abstract
A filtration medium comprises a textile substrate and a mercury abatement coating on a least a portion of the surface of the textile substrate. The mercury abatement coating comprises a copper salt, a binder, and other optional components. A process for removing mercury from a gaseous stream uses the filtration medium.
Claims27
A filtration medium comprising:
- (a) a textile substrate, the textile substrate being permeable to gases and having at least one surface;
- and
- (b) a mercury abatement coating disposed on at least a portion of the surface of the textile substrate, the mercury abatement coating comprising:
- (i) a copper salt comprising copper cations selected from the group consisting of copper(I) cations, copper(II) cations, and mixtures thereof;
- (ii) optionally a chloride salt, provided the chloride salt must be present when the copper salt does not comprise chloride anions;
- (iii) optionally activated carbon particles;
- and
- (iv) a binder,
- wherein the ratio of halide anions to copper cations in the mercury abatement coating is about 2:1 or more.
6 more elements
A filtration medium comprising:
- (a) a textile substrate, the textile substrate being permeable to gases and having at least one surface;
- and
- (b) a mercury abatement coating disposed on at least a portion of the surface of the textile substrate, the mercury abatement coating comprising:
- (i) a copper salt comprising copper cations selected from the group consisting of copper(I) cations, copper(II) cations, and mixtures thereof;
- (ii) an iodide salt;
- and
- (iii) a binder,
- wherein the ratio of halide anions to copper cations in the mercury abatement coating is about 2:1 or more.
5 more elements
Dependencies are inferred from the claim text.