Gasification process
US4617027A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1982 |
| Grant date | Oct 14, 1986 |
| Priority date | — |
| Expiry date | Aug 17, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/1853
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel process, and the articles of manufacture, or compositions, formed thereby, wherein a Group II-A metal, or compound thereof, can be ion-exchanged onto coal, and thereafter a Group I metal physically admixed or otherwise incorporated therewith, so that the composition can be pyrolyzed, and gasified, to form a high-BTU, intermediate-BTU or synthesis fuel gas. Suitably, the Group II metal, or alkaline earth metal, can be directly ion-exchanged onto a low rank coal, without necessity of any pretreatment, by contact with a basic solution of a Group II-A metal compound since, of course, low rank coals contain natural ion-exchange sites. An alkaline earth metal, or metals, can also be ion-exchanged onto a high rank coal, notably one deficient in natural active exchange sites, such as a subbituminous or bituminous coal, by (a) contacting, heating and soaking the coal in an alkali solution of a Group I-A metal compound sufficient to incorporate said metal compound, or cation portion thereof, into said coal and form ion-exchange sites, (b) or by oxidation of the high rank coal by contact with an oxidizing agent, preferably an oxygen-containing gas (air), peroxygen compound, oxidizing …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.