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US4615284A
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Method of binding vanadium compounds
Assignee: Hitachi Zosen Inova Steinmueller GmbH
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Filing: 1984-06-28
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Granted: 1986-10-07
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Expires: 2004-06-28
Abstract
Abstract A method of binding vanadium compounds which are formed as reaction products during the combustion of solid or fluid petroleum residues in vapor generators. The binding of the vanadium compounds is effected within the framework of a combustion with alkali earth containing coals which are preferably high-ash coals. With solid petroleum residues, the coal is mixed with the residue prior to entry into the combustion zone. With fluid petroleum residues, the coal is introduced into the combustion zone via a burner along with, yet separate from, the residues.
Inventors
- 👤 Siegfried Pollmann
- 👤 Klaus Grethe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:25
CPC Classifications
C; C10; C10L; C10L9/00; C10L9/10; C10L10/00; C10L10/02; C10L10/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
A method of binding vanadium compounds which are formed as reaction products during the combustion of solid or fluid petroleum residues in vapor generators undertaken without any separately produced additional additive; said method comprising the step of effecting said combustion with coal having an adequate alkaline earth content; with solid petroleum residues, said coal being mixed with said residues prior to entry into a combustion zone, and with fluid petroleum residues, said coal being introduced into a combustion zone, via a burner, along with, yet separate from, said residues.
Claim 2
Independent Claim
89 words
A method of binding vanadium compounds which are formed as reaction products during the combustion of solid or fluid petroleum residues in vapor generators undertaken without any separately produced additional additive; said method comprising the step of effecting said combustion with coal having an adequate alkaline earth content; with solid petroleum residues, said coal being mixed with said residues prior to entry into a combustion zone, and with fluid petroleum residues, said coal being introduced into a combustion zone, via a burner, along with, yet separate from, said residues.
Claim 3
Dependent Claim
17 words
A method according to claim 1, which includes the step of using high-ash, alkaline earth containing coal.
References Cited (Backward Citations)
US3980449A
Cited
US4190421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-06 | 1990-04-07 | 1990-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-06 | 1994-04-07 | 1994-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-06 | 1998-04-07 | 1998-10-07 | $7700.00 | Window Closed / Lapsed |