Methods of producing water-resistant solid fuels
US8673030B2 · kind B2 · utility
1Cited by
45References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2008 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Nov 24, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/30
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The invention provides a method by which high moisture low rank coal or other carbonaceous material may be transformed into a high-energy, water resistant product. The raw feed is comminuted then mechanically compacted by a roller press with rolls of a specified profile to mobilize the inherent moisture and collapse most of the interstitial pore space. The mobilized moisture is then removed by low-temperature drying and the material is sized and shaped to form a product that is resistant to re-absorption of water or other liquids. The present invention will promote the use of low rank coal for liquefaction and gasification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.