Method for the treatment of coal
US7232472B2 · kind B2 · utility
7Cited by
22References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 2001 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Sep 16, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/36
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and apparatus for the treatment of coal to form a product gas such as methane (CH4), and a high purity carbon product. The method includes contacting a coal-containing feedstock with a treatment gas that includes hydrogen. The coal feedstock can advantageously be a low-grade coal that contains high levels of impurities. The methane product gas can be augmented with hydrogen (H2) gas. Reactants and by-products are advantageously recycled within the process system to enhance the economics of the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.