Method of and apparatus for producing combustible gases from pulverized solid fuel
US6312483A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1993 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Aug 18, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/1869
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Combustible gases from pulverized solid fuel are generated by semi-coking the pulverized solid fuel in a reactor in the absence of oxygen to produce a solids stream that includes carbonaceous material and a gas stream that includes hydrocarbon gases and tar fumes. The carbonaceous material in the solids stream is gasified in a fluidized bed using steam and hot air to produce an output stream that includes combustible gases and coke particles. The output stream is combined with the gas stream to form a combined stream which is separated into a combustible gas stream and a hot particulate stream. At least a part of the hot particulate stream is applied to the reactor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.