Catalytic coal gasification process
US4318712A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1980 |
| Grant date | Mar 9, 1982 |
| Priority date | — |
| Expiry date | May 19, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/1823
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A carbonaceous feed material, a potassium compound having a relatively poor catalytic activity as compared to that of potassium carbonate, and a sodium or lithium salt are introduced into a gasification reactor. The carbonaceous material is then gasified in the presence of the added potassium and sodium or lithium constituents. The added sodium or lithium salt apparently activates the relatively noncatalytic potassium compound thereby producing a substantial catalytic effect on the gasification reactions. In general, activation of the noncatalytic potassium compound will take place when the sodium or lithium compound introduced into the reactor is either a salt of a weak acid or a salt of a strong acid that is converted to a sodium or lithium salt of a weak acid in the reactor at gasification conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.