Method of converting liquid and/or solid fuel to a substantially inerts-free gas
US4309198A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1979 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Dec 31, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/1892
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the conversion of fuel (solid and/or liquid) to reducing and/or synthesis gas by contacting the fuel in a fluidized conversion bed (13) with a solid oxygen donor (e.g. CaSO.sub.4) at a fuel conversion temperature (e.g. 850.degree. to 1150.degree. C.) in the presence of at least one gas/vapor phase substance such as H.sub.2 and/or H.sub.2 O and/or CO and/or CO.sub.2 which serves to promote and or mediate the transfer of oxygen from the donor to the fuel and preferably in the absence of non-reactive gases (e.g. N.sub.2) whereby the fuel is converted to a reducing and/or synthesis gas product by (inter alia) partial oxidation employing the oxygen of the solid oxygen donor, the latter being reduced (e.g. CaS). The reduced donor is exothermically oxidized in a fluidized oxidation bed (35) by contact with an oxygen-containing gas (e.g. air) and re-used for converting further quantities of fuel. Moieties (e.g. sulfur/sulfur compounds) whose presence is undesirable in the gas product may be removed by a solid moiety-fixing agent (e.g. CaO) in the conversion bed (13). The moiety-fixing properties of the latter are at least partly regenerated in a fluidized regenerat…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.