US5437699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preventing slag tap blockage
Assignee: Individual
•
Filing: 1990-10-19
•
Granted: 1995-08-01
•
Expires: 2010-10-19
Abstract
Abstract The slag tap of a gasifier is offset from the geometrical axis. Coalescent, molten, residual ash from incomplete combustion is directed to a hearth where residence time provides further combustion and a reduction in the volume and temperature of the resulting slag. The reduced volume and temperature ash is then directed to a slag tap after which disposal is accomplished by conventional means.
Inventors
- 👤 Charles V. Sternling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:58
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/46; C10J3/48; C10J3/485; C10J3/52; C10J3/526; C10J3/72; C10J3/82; C10J3/84; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/101; C10J2300/00; C10J2300/12; C10J2300/1223; Y; Y10; Y10S; Y10S48/00; Y10S48/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
An apparatus for preventing slag tap blockage in a gasifier during the conversion of carbonaceous fuels comprising: a reaction vessel having a hearth sloping downwardly from the walls of said reaction vessel; a burner in said reaction vessel located above said hearth for converting a dry fuel into synthesis gas and a free-flowing liquid mineral waste, said dry fuel comprising finely divided particles; a slag tap opening formed in said downwardly sloping hearth at the lowest part thereof for diverting said liquid mineral waste through said hearth and from said reaction vessel; blocking means comprising a pedestal fixedly located in said reaction vessel below said burner, raised above said slag tap and at least partially blocking the opening of said slag tap as seen on a vertical projection thereof, said pedestal being concentrically located with respect to said vertical projection, for preventing unconverted fuel from falling directly through said slag tap; and means for solidifying and collecting said liquid mineral waste.
Claim 2
Independent Claim
161 words
An apparatus for preventing slag tap blockage in a gasifier during the conversion of carbonaceous fuels comprising: a reaction vessel having a hearth sloping downwardly from the walls of said reaction vessel; a burner in said reaction vessel located above said hearth for converting a dry fuel into synthesis gas and a free-flowing liquid mineral waste, said dry fuel comprising finely divided particles; a slag tap opening formed in said downwardly sloping hearth at the lowest part thereof for diverting said liquid mineral waste through said hearth and from said reaction vessel; blocking means comprising a pedestal fixedly located in said reaction vessel below said burner, raised above said slag tap and at least partially blocking the opening of said slag tap as seen on a vertical projection thereof, said pedestal being concentrically located with respect to said vertical projection, for preventing unconverted fuel from falling directly through said slag tap; and means for solidifying and collecting said liquid mineral waste.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-31 | 1999-01-30 | 1999-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-31 | 2003-01-30 | 2003-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-31 | 2007-01-30 | 2007-08-01 | $7700.00 | Window Closed / Lapsed |