Patent US3965004A successfully refreshed from Google Patents.
US3965004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of contaminants from water
Assignee: Sun Shipbuilding and Dry Dock Co
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Filing: 1975-01-30
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Granted: 1976-06-22
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Expires: 1995-01-30
Abstract
Abstract In a system for removing oil from oily water which employs an oil droplet coalescer, a ceramic dewaxer is inserted before the coalescer to remove waxes, asphalts, and similar materials which would otherwise quickly clog the fine holes of the coalescer. The "dirty" ceramic elements of the dewaxer may be easily and efficiently regenerated.
Inventors
- 👤 Daniel C. Garber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:45
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/02; B01D39/06; B01D17/00; B01D17/02; B01D17/0208; B01D17/0214; B01D17/04; B01D17/045; B01D17/12; Y; Y10; Y10S; Y10S210/00; Y10S210/05
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
103 words
A system for removing both oil and particulate contaminants from a flowing stream of liquid which is to be disposed of as waste, which comprises in sequence, a dewaxer consisting of a fixed bed containing a plurality of discrete bodies of a porous ceramic material compacted together in random arrangement as a packing which acts to constrain said flowing stream back and forth through said compacted ceramic material and to absorb waxes, asphalts, and like hydrocarbon materials, means to remove particulate matter, and a fine hole size coalescer operating to effect a separation of dispersed fine droplets of oil from said flowing stream.
Claim 2
Independent Claim
103 words
A system for removing both oil and particulate contaminants from a flowing stream of liquid which is to be disposed of as waste, which comprises in sequence, a dewaxer consisting of a fixed bed containing a plurality of discrete bodies of a porous ceramic material compacted together in random arrangement as a packing which acts to constrain said flowing stream back and forth through said compacted ceramic material and to absorb waxes, asphalts, and like hydrocarbon materials, means to remove particulate matter, and a fine hole size coalescer operating to effect a separation of dispersed fine droplets of oil from said flowing stream.
Claim 3
Independent Claim
127 words
A system for removing both oil and particulate contaminants from a flowing stream of an oily water liquid mixture in which the water portion is to be disposed of as waste, which comprises in sequence, a gravity type oil-water separator to make a rough separation of oil from the oily water, a dewaxer consisting of a fixed bed containing a plurality of discrete bodies of a porous ceramic material compacted together in random arrangement as a packing which acts to constrain said flowing stream back and forth through said compacted ceramic material and to absorb waxes, asphalts, and like hydrocarbon materials, means to remove particulate matter, and a fine hole size coalescer operating to effect a separation of dispersed fine droplets of oil from said flowing stream.
Claim 4
Independent Claim
127 words
A system for removing both oil and particulate contaminants from a flowing stream of an oily water liquid mixture in which the water portion is to be disposed of as waste, which comprises in sequence, a gravity type oil-water separator to make a rough separation of oil from the oily water, a dewaxer consisting of a fixed bed containing a plurality of discrete bodies of a porous ceramic material compacted together in random arrangement as a packing which acts to constrain said flowing stream back and forth through said compacted ceramic material and to absorb waxes, asphalts, and like hydrocarbon materials, means to remove particulate matter, and a fine hole size coalescer operating to effect a separation of dispersed fine droplets of oil from said flowing stream.
Claim 5
Dependent Claim
16 words
The system of claim 2 where the means to remove particulate matter is a sand filter.
Claim 6
Dependent Claim
15 words
The system of claim 2 wherein the porous ceramic material is a fired, unglazed clay.
Claim 7
Dependent Claim
15 words
The system of claim 4 where the ceramic material is a pellet of cylindrical configuration.
Claim 8
Dependent Claim
150 words
A process for removing both oil and particulate contaminants from a flowing stream of liquid which is to be disposed of as waste, which comprises: a. passing said stream through a fixed bed of a porous medium consisting of a plurality of discrete bodies of a porous ceramic material compacted together in random arrangement as a packing which acts to constrain said flowing stream back and forth through said compacted ceramic material and acts as a dewaxer to absorb waxes, asphalts, and the like hydrocarbon materials, b. passing said stream through means to remove particulate material, c. passing said stream from said particulate removing means through a fine hole size coalescer operating to effect a separation of dispersed fine droplets of oil from said flowing stream, d. passing the separated oil from said coalescer into a storage tank, and, e. passing the substantially oil-free water from said coalescer to waste.
Claim 9
Dependent Claim
150 words
A process for removing both oil and particulate contaminants from a flowing stream of liquid which is to be disposed of as waste, which comprises: a. passing said stream through a fixed bed of a porous medium consisting of a plurality of discrete bodies of a porous ceramic material compacted together in random arrangement as a packing which acts to constrain said flowing stream back and forth through said compacted ceramic material and acts as a dewaxer to absorb waxes, asphalts, and the like hydrocarbon materials, b. passing said stream through means to remove particulate material, c. passing said stream from said particulate removing means through a fine hole size coalescer operating to effect a separation of dispersed fine droplets of oil from said flowing stream, d. passing the separated oil from said coalescer into a storage tank, and, e. passing the substantially oil-free water from said coalescer to waste.
Claim 10
Dependent Claim
164 words
A process for removing both oil and particulate contaminants from a flowing stream of an oily-water liquid mixture in which the water portion is to be disposed of as waste, which comprises: a. passing said stream through a gravity type oil-water separator to make a rough separation of oil from the oily water, b. passing said stream from said gravity separator through a porous medium consisting of a plurality of discrete bodies of a porous ceramic material compacted together in random arrangement as a packing which acts as a dewaxer to absorb waxes, asphalts, and like hydrocarbon materials, c. passing said dewaxed stream through a sand filter to remove particulate matter, d. passing said stream from said sand filter through a fine hole size coalescer operating to effect a separation of dispersed fine droplets of oil from said flowing stream, e. passing the separated oil from said coalescer into a storage tank, and, f. passing the substantially oil-free water from said coalescer to waste.
Claim 11
Dependent Claim
164 words
A process for removing both oil and particulate contaminants from a flowing stream of an oily-water liquid mixture in which the water portion is to be disposed of as waste, which comprises: a. passing said stream through a gravity type oil-water separator to make a rough separation of oil from the oily water, b. passing said stream from said gravity separator through a porous medium consisting of a plurality of discrete bodies of a porous ceramic material compacted together in random arrangement as a packing which acts as a dewaxer to absorb waxes, asphalts, and like hydrocarbon materials, c. passing said dewaxed stream through a sand filter to remove particulate matter, d. passing said stream from said sand filter through a fine hole size coalescer operating to effect a separation of dispersed fine droplets of oil from said flowing stream, e. passing the separated oil from said coalescer into a storage tank, and, f. passing the substantially oil-free water from said coalescer to waste.
Claim 12
Dependent Claim
15 words
The process of claim 7 where the porous ceramic material is a fired, unglazed clay.
Claim 13
Dependent Claim
14 words
The process of claim 8 where the ceramic is a pellet of cylindrical configuration.
References Cited (Backward Citations)
US1649103A
Cited
US2864502A
Cited
US2922750A
Cited
US3769199A
Cited
US3645398A
Cited
US3674684A
Cited
US3862026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |