Metal contaminant removal compositions and methods for making and using the same
US8535422B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 25, 2010 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Mar 22, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23J2219/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Metal sorbent compositions for removing a metal contaminant from a fluid, such as removal of mercury from a coal-fired flue gas stream, and methods for making and using the same are provided. The subject metal sorbent compositions comprise an effective amount of an aqueous dispersion of microfine elemental sulfur particles on an adsorbent substrate, and optionally, a metal capture enhancing agent such as a halogen source and/or an oxidizing agent in an amount providing a metal capture enhancing effect on the metal sorbent composition. The subject metal sorbent compositions are prepared by drying an aqueous dispersion of microfine elemental sulfur particles on an adsorbent substrate, such as on a substrate of microfine particles of a refractory material and the like. Also provided are kits for use in preparing the subject compositions, and compositions produced by the methods. The subject compositions, kits and systems find use in a variety of different applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.