Coal combustor and slag exhausting device therein
US5331906A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1993 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | Apr 30, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J3/526
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In order to stably maintain a combustion capability in a combustion furnace for coal gassification, it is necessary to exhaust molten slag produced within the furnace without the slag stagnating. The present invention provides, in a combustion furnace for coal gassification, a slag exhausting device which is configured in such a manner that the cooling of molten slag being exhausted from the furnace is minimized to prevent the slag from solidifying and causing other slag to stagnate. The slag exhausting device is disposed at the center of a bottom wall of the combustor, and has a lower cylindrical portion and an upper bank opening upwardly and flared at an angle of 300.degree.-45.degree.. The height H from the bottom wall to the top of the upper bank, a height L and an inner diameter ds of the cylindrical lower portion and a diameter D of the combustor are set to satisfy the relations of ds/D=0.2-0.4, L/ds=0.2-0.6 and H/D=0.05-0.15.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.