Catalytic coal gasification by utilizing chlorides
US4848983A · kind A · utility
47Cited by
9References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1987 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Oct 6, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/52
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process of catalytic coal gasification characterized by mixing an inexpensive, low rank coal with an aqueous solution of inexpensive, widely existing alkali metal or alkaline earth metal chlorides, such as Nacl, KCl, or the like; adding a pH adjustor such as ammonia to the resulting mixture to adjust pH to 5.about.12, whereby an ion exchange is effected between said metal and hydrogen in the coal, thereby loading only metals as a catalyst on the coal; washing the coal with water to remove chloride by-products; and running steam onto the catalyst-loaded coal at high temperatures and high pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.