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US3589844A
Expired / Lapsed
US
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Process of burning away oil or other combustible liquids on water or other noncombustible liquids
Assignee: Wasag Chemie AG
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Filing: 1969-02-28
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Granted: 1971-06-29
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Expires: 1989-02-28
Abstract
Abstract A process for absorbing and burning away oil or other combustible liquids on water or other noncombustible liquids wherein absorbent and/or surface active noncombustible inorganic foamed particles are spread out over the combustible liquid, the combustible liquids are absorbed by the particles and the liquid absorbed by the particles is ignited.
Inventors
- 👤 Stefan Kraemer
- 👤 Alois Seidl
- 👤 Michael Seger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:40
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/042; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
The method of claim 1, wherein said foamed particles absorb from about 10 to 500 percent of their weight of the combustible liquid.
Claim 2
Dependent Claim
21 words
The method of claim 1, wherein said foamed particles are floatable and remain so after said combustible liquids are burned away.
Claim 3
Dependent Claim
24 words
The method of claim 1, wherein said foamed particles are floatable and lose their floatability and sink after said combustible liquids are burned away.
Claim 4
Independent Claim
114 words
A method for absorbing and burning away combustible liquids floating upon water comprising: a. dissolving about 0.02-0.7 parts by weight of an inorganic fibrous silicate in about one part by weight aqueous alkali metal silicate containing a blowing agent; b. heating the dissolved mixture to about 140*-300* C. to a substantially dry mass; c. comminuting the mass and heating the comminuted mass to about 700*-900* C. to produce inorganic foamed particles having a melting point between 400*-1,000* C. and a density of 0.05 to 0.20 grams per cubic centimeter; d. spreading said inorganic foamed particles over said combustible liquids floating upon water to absorb said combustible liquids; and e. igniting said absorbed combustible liquids.
Claim 5
Dependent Claim
16 words
The method of claim 5, further comprising applying a hydrophobic coating to said inorganic foamed particles.
Claim 6
Dependent Claim
18 words
The method of claim 5, wherein the comminuted mass comprises fragments less than about 5 cm. in diameter.
Claim 7
Dependent Claim
27 words
The method of claim 5, wherein the comminuted mass is molded into plates having a size configuration less than about 5 cm. thick and 0.5 square meters.
Claim 8
Independent Claim
125 words
A method for absorbing and burning away combustible liquids floating upon water comprising: a. dissolving about 0.02-0.7 parts by weight of an inorganic fibrous silicate in about one part by weight aqueous alkali metal silicate containing a blowing agent; b. heating the dissolved mixture to about 140*-300* C. to a substantially dry mass; c. comminuting the mass and coating the comminuted mass with a dispersion of a high melting inorganic compound having a melting point between about 1,200*-2,500* C.; d. heating the coated comminuted mass to about 600*-1,000* C. to produce inorganic foamed particles having a globular or cylindrical shape; e. spreading said inorganic foamed particles over said combustible liquids floating upon water to absorb said combustible liquids; and f. igniting said absorbed combustible liquids.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |