Air pollution control filter elements for filtration systems
US8114201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Dec 3, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2258/0283
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved filtration apparatus, filtering method and filtering material for capturing mercury and other pollutants in pollutant-laden fluid streams such as flue gases generated by process gas streams are disclosed. The improved filtration system may include two pollutant remediation layers, an upstream layer capable of filtering particulates and a downstream layer capable of adsorbing and/or catalyzing pollutants such as mercury, dioxin, furans, and NOx. The improved filtration system may be in the form of a particulate filter bag. The particulate filter bag may be configured for use in a reverse air filtration system with the upstream layer facing an internal volume of the bag. The upstream layer may include an ePTFE layer laminated to the upstream side of the upstream layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.