US4086164A
Expired / Lapsed
US
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Method of disposing of waste water containing emulsified oil
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1976-03-10
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Granted: 1978-04-25
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Expires: 1996-03-10
Abstract
Abstract A method of disposing of an oil containing emulsified waste water, for example, resulting from metal working processes, which comprises:
Inventors
- 👤 Mitsuhiko Noda
- 👤 Kikuo Nomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:25
CPC Classifications
C; C02; C02F; C02F9/00; B; B01; B01D; B01D17/00; B01D17/02; B01D17/08; B01D17/085; C02F1/00; C02F1/001; C02F1/02; C02F1/025; C02F11/00; C02F11/06; F; F23; F23G; F23G7/00; F23G7/001; F23G7/05; C02F2101/00; C02F2101/10; C02F2101/20; C02F2103/00; C02F2103/16; Y; Y02; Y02W; Y02W10/00; Y02W10/40
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
96 words
A method of disposing of oil containing emulsified waste water from metal working processes which comprises concentrating an oil containing emulsified waste water, mixing the concentrate obtained at least with a filtration auxiliary which contains filtration dregs of solid foreign bodies resulting from the working of metals to form a substantially independently combustible mixture, and burning the resulting mixture, said emulsified waste water remaining in an emulsified state after concentration, said filtration auxiliary comprising a substance used in filtering solid foreign bodies from the oil when said emulsified oil is recycled in the metal working processes.
Claim 2
Independent Claim
96 words
A method of disposing of oil containing emulsified waste water from metal working processes which comprises concentrating an oil containing emulsified waste water, mixing the concentrate obtained at least with a filtration auxiliary which contains filtration dregs of solid foreign bodies resulting from the working of metals to form a substantially independently combustible mixture, and burning the resulting mixture, said emulsified waste water remaining in an emulsified state after concentration, said filtration auxiliary comprising a substance used in filtering solid foreign bodies from the oil when said emulsified oil is recycled in the metal working processes.
Claim 3
Dependent Claim
24 words
The method of claim 1, wherein that a combustible liquid is further added when said concentrate is mixed with at least said filtration dregs.
Claim 4
Dependent Claim
17 words
The method of claim 1, wherein a sludge or like inorganic substance is added to said concentrate.
Claim 5
Dependent Claim
19 words
The method of claim 1, wherein said concentrate further comprises solid foreign bodies resulting from the working of metals.
Claim 6
Dependent Claim
12 words
The method of claim 4, wherein said concentrate is obtained by ultra-filtration.
Claim 7
Dependent Claim
16 words
The method of claim 1, wherein said concentrate further comprises one or more surface active agents.
Claim 8
Dependent Claim
41 words
The method of claim 6, wherein said concentrate comprises: from 20 to about 60% by weight of oil, from about 80 to about 40% by weight of water, and below about 1% by weight of one or more surface active agents.
Claim 9
Dependent Claim
37 words
The method of claim 7, wherein said filtration dregs have a maximum particle size of from about 50 μ to about 5 mm and are present in an amount below about 0.3% by weight of the concentrate.
Claim 10
Dependent Claim
23 words
The method of claim 8, wherein the caloric value of the material subjected to combustion is from about 4,500 to about 6,000 Kcal/kg.
Claim 11
Dependent Claim
14 words
The method of claim 1, wherein said filtration auxiliary comprises clay or diatomaceous earth.
Claim 12
Independent Claim
111 words
A method of disposing of an oil containing emulsified waste water resulting from metal working processes which comprises: (a) separating the oil and water present in the oil containing emulsified waste water while maintaining the state of the emulsion, thereby concentrating the oil without breaking the emulsion; (b) mixing the concentration thus obtained at least with the filtration dregs filtered from the oil containing emulsified waste water during metal working, said concentrate being in a homogeneous, stable slurry state due to the action of a surfactant even when mixed with the solid material which contains water, unless said concentrate is dried; and (c) subjecting the resulting homogeneous, stable mixture to combustion.
Claim 13
Independent Claim
111 words
A method of disposing of an oil containing emulsified waste water resulting from metal working processes which comprises: (a) separating the oil and water present in the oil containing emulsified waste water while maintaining the state of the emulsion, thereby concentrating the oil without breaking the emulsion; (b) mixing the concentration thus obtained at least with the filtration dregs filtered from the oil containing emulsified waste water during metal working, said concentrate being in a homogeneous, stable slurry state due to the action of a surfactant even when mixed with the solid material which contains water, unless said concentrate is dried; and (c) subjecting the resulting homogeneous, stable mixture to combustion.
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) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |