Patent US3957647A successfully refreshed from Google Patents.
US3957647A
Expired / Lapsed
US
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Removing oil from waste water with sulfur
Assignee: BP America Production Co
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Filing: 1974-09-03
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Granted: 1976-05-18
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Expires: 1994-09-03
Abstract
Abstract This invention relates to water pollution control and concerns a system for removing dispersed oil from water by contacting the oily water with sulfur to cause the oil to coalesce or agglomerate. In a preferred embodiment, the water containing the dispersed oil is passed through a bed of granular media presenting a surface area of solid phase sulfur to coalesce the dispersed oil. The coalesced oil is then separated from the water.
Inventors
- 👤 Loyd W. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:54
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/681; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; B01D17/04; B01D17/045; Y; Y10; Y10S; Y10S210/00; Y10S210/05; Y10S588/00; Y10S588/90
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
62 words
An oil-water separator system for separating dispersed oil from water which comprises: an oily-water source; a vessel having an oily water inlet and an outlet; means connecting said oily water inlet to said oily water source; a bed of granular media within said vessel between said oily water inlet and said outlet having a large total surface area of solid phase sulfur.
Claim 2
Dependent Claim
62 words
An oil-water separator system for separating dispersed oil from water which comprises: an oily-water source; a vessel having an oily water inlet and an outlet; means connecting said oily water inlet to said oily water source; a bed of granular media within said vessel between said oily water inlet and said outlet having a large total surface area of solid phase sulfur.
Claim 3
Dependent Claim
48 words
A separator system as defined in claim 1 including a slanting baffle plate contacting the inner wall of said vessel below said outlet and terminating above said outlet but below said oily water inlet at a spaced distance from the interior wall of said vessel opposite said outlet.
Claim 4
Dependent Claim
46 words
A separator system as defined in claim 1 in which said bed includes sulfur coated sand in which the sand has a grain size at least about 0.5 mm. in diameter and the sulfur coating has an average thickness of from about 0.1 to 3.0 mm.
Claim 5
Dependent Claim
55 words
A separator system as described in claim 1 in which said vessel is an upright vessel and includes a distribution plate at the lower end thereof at the inlet; and a bed of uncoated granular material larger than said granular media on said distribution plate and just below and supporting said bed of granular media.
Claim 6
Independent Claim
114 words
An apparatus for use in separating oil from oily water which comprises: an oily water source in which oil is dispersed in water; a vessel having an oily water inlet at the top and an outlet at the bottom; means connecting said oily water inlet to said oily water source; a first bed of granular media with grain size in the range of 0.5 to 4.0 mm. with said vessel and supported above within outlet; a second bed of granular media positioned above said first bed, said second bed of granular media presenting a surface area of solid phase yellow sulfur with essentially no other form of sulfur present whereby said oil is coalesced.
Claim 7
Independent Claim
114 words
An apparatus for use in separating oil from oily water which comprises: an oily water source in which oil is dispersed in water; a vessel having an oily water inlet at the top and an outlet at the bottom; means connecting said oily water inlet to said oily water source; a first bed of granular media with grain size in the range of 0.5 to 4.0 mm. with said vessel and supported above within outlet; a second bed of granular media positioned above said first bed, said second bed of granular media presenting a surface area of solid phase yellow sulfur with essentially no other form of sulfur present whereby said oil is coalesced.
Claim 8
Dependent Claim
48 words
An apparatus as defined in claim 5 in which the grain size of the granular media of said first bed is about 0.5 mm. and the grain size of the granular media of said second bed is in the range of from about 1 to about 4 mm.
Claim 9
Dependent Claim
62 words
An oil-water separator for separating dispersed oil from water which comprises: a vessel having an oily water inlet and an outlet; a bed of granular media within said vessel between said oily water inlet and said outlet, having a large total surface area of solid phase yellow sulfur; a skimming tank; means connecting said skimming tank to the outlet of said vessel.
Claim 10
Dependent Claim
62 words
An oil-water separator for separating dispersed oil from water which comprises: a vessel having an oily water inlet and an outlet; a bed of granular media within said vessel between said oily water inlet and said outlet, having a large total surface area of solid phase yellow sulfur; a skimming tank; means connecting said skimming tank to the outlet of said vessel.
Claim 11
Dependent Claim
64 words
An oil-water separator for separating dispersed oil from water which comprises: a vessel having an oily water inlet and an outlet; a bed of granular media within said vessel between said oily water inlet and said outlet, having a large total surface area of solid phase yellow sulfur whereby the dispersed oil is coalesced; a filter; means connecting said filter to said water inlet.
Claim 12
Dependent Claim
64 words
An oil-water separator for separating dispersed oil from water which comprises: a vessel having an oily water inlet and an outlet; a bed of granular media within said vessel between said oily water inlet and said outlet, having a large total surface area of solid phase yellow sulfur whereby the dispersed oil is coalesced; a filter; means connecting said filter to said water inlet.
Claim 13
Dependent Claim
71 words
An oil-water separator for separating dispersed oil from water which comprises: a vessel having an oily water inlet and an outlet; a bed of granular media within said vessel between said oily water inlet and said outlet having a large total surface area of solid phase yellow sulfur whereby the dispersed oil is coalesced; a water inlet filter; means connecting said water inlet filter to said water inlet of said vessel.
Claim 14
Dependent Claim
71 words
An oil-water separator for separating dispersed oil from water which comprises: a vessel having an oily water inlet and an outlet; a bed of granular media within said vessel between said oily water inlet and said outlet having a large total surface area of solid phase yellow sulfur whereby the dispersed oil is coalesced; a water inlet filter; means connecting said water inlet filter to said water inlet of said vessel.
Claim 15
Dependent Claim
80 words
An oil-water separator for separating dispersed oil from water which comprises: an upright vessel having an oily water inlet near the bottom thereof, an oil outlet at the top thereof, and a water outlet at an intermediate position below said oil outlet; a bed of granular media within said vessel between said oily water inlet and said water outlet having a large total surface area of solid phase yellow sulfur whereby the dispersed oil is caused to form large droplets.
Claim 16
Dependent Claim
80 words
An oil-water separator for separating dispersed oil from water which comprises: an upright vessel having an oily water inlet near the bottom thereof, an oil outlet at the top thereof, and a water outlet at an intermediate position below said oil outlet; a bed of granular media within said vessel between said oily water inlet and said water outlet having a large total surface area of solid phase yellow sulfur whereby the dispersed oil is caused to form large droplets.
References Cited (Backward Citations)
US1812629A
Cited
US2102796A
Cited
US2385527A
Cited
US2959289A
Cited
US3417015A
Cited
US3558482A
Cited
US3844743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |