Method and composition for removal of gaseous contaminants produced in combustion of fossil fuels or present in reducing gases
US4483259A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1983 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Jun 20, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23C10/002
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method and composition are described for catalytically converting unburned hydrocarbons and carbon monoxide to carbon dioxide and reducing nitrogen oxides to nitrogen during or subsequent to the combustion of fossil fuels while adsorbing sulfur oxides. The method and composition of the invention are also useful for treating reducing gases containing one or more of hydrogen sulfide, ammonia, and carbonyl sulfide to reduce these gaseous components to non-polluting components such as nitrogen, hydrogen, and water while adsorbing sulfur so that it can be removed from the system. The method and composition of the invention are especially characterized by their use to remove polluting gaseous components from fossil fuels during combustion or subsequent to combustion or from reducing gases and in various stages as long as the catalyst adsorbent system of the invention is brought into contact with the gaseous contaminants being removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.