Process for continuously converting coal into a saturated hydrocarbon gas
US3973924A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1974 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Nov 4, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10K3/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Coal is continuously converted into a saturated hydrocarbon gas containing substantially no unsaturated hydrocarbon and having a high calorific value and a uniform composition by the operations of: providing a first treating gas having a predetermined temperature, pressure and composition, by mixing, in a first conditioning chamber, a first substantially inert burnt gas which has been prepared by burning a mixture of a fuel and air, containing therein 2% by volume or less of free oxygen, with steam and, if necessary, hydrogen gas; thermally cracking, in a first treating chamber, the coal particles with the first treating gas while fluidizing said coal particles; separately providing a second treating gas having a predetermined temperature, pressure and composition by mixing, in a second conditioning chamber, a second substantially inert burnt gas which has been prepared by burning a fuel, and contains therein 2% by volume or less of free hydrogen gas, with hydrogen gas and, if necessary, an additional gas; hydrogenating, in a second treating chamber, the thermally cracked product with the second treating gas while fluidizing the thermally cracked product to generate the saturated h…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.