US3601079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for applying drag-reducing additives
Assignee: General Electric Co
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Filing: 1969-10-24
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Granted: 1971-08-24
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Expires: 1989-10-24
Abstract
Abstract A water-soluble polymeric material is mixed with water rapidly in the mixing chamber. In the mixing chamber polymer and water are thoroughly mixed at a high velocity of water to produce turbulence whereupon the mixed solution passes from the mixing chamber to a hydration tank where it is hydrated dynamically to provide a uniform polymer solution. From the hydration tank the hydrated polymer is diluted with bypass flow to a desired concentration for injection or it may be injected directly into the main flow of water which may be along the sides of a conduit or along the sides of a moving vessel.
Inventors
- 👤 Walter B Giles
- 👤 William T Pettit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:26
CPC Classifications
C; C09; C09K; C09K3/00; B; B01; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/312; B01F25/3121; B01F25/3124; B01F25/31243; B01F25/32; B01F25/40; B01F25/42; B01F25/43; B01F25/432; B01F25/4322; B01F35/00; B01F35/71; B01F35/713; B01F35/7131; B01F35/717; B01F35/71755; Y; Y02; Y02T; Y02T70/00; Y02T70/10; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/8593; Y10T137/87265; Y10T137/87338; Y10T137/87346; Y10T137/87571; Y10T137/87587; Y10T137/87619
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
95 words
An apparatus for applying drag-reducing additives comprising a mixing chamber to rapidly form a suspension of a soluble polymeric material in a solvent, means for hydrating the suspension as formed during a first time period whereby only a partial solution of the polymer has been produced having a higher concentration than is needed for drag reduction, and means to inject the partial solution as formed into a boundary layer at a flow rate sufficient to accomplish drag reduction including means to dilute the partial solution prior to ejecting said partial solution into said boundary layer.
Claim 2
Independent Claim
95 words
An apparatus for applying drag-reducing additives comprising a mixing chamber to rapidly form a suspension of a soluble polymeric material in a solvent, means for hydrating the suspension as formed during a first time period whereby only a partial solution of the polymer has been produced having a higher concentration than is needed for drag reduction, and means to inject the partial solution as formed into a boundary layer at a flow rate sufficient to accomplish drag reduction including means to dilute the partial solution prior to ejecting said partial solution into said boundary layer.
Claim 3
Independent Claim
169 words
An apparatus for applying drag-reducing additives comPrising a mixing chamber to rapidly form a suspension of soluble polymeric material in a solvent and which mixing chamber includes means to contact the polymeric material with a stream of the solvent and hydration proceeds during passage of the suspension to a solid surface which is to be lubricated by drag-reducing additives, means for hydrating the suspension as formed until a solution of a substantial portion of the polymer has been produced to form a more concentrated solution that is needed for drag reduction, wherein the hydration means comprises a second chamber connected to the mixing chamber and the means for injecting the solution as formed into a boundary layer are connected to the second chamber, and means to inject the solution as formed into the boundary layer at a flow rate sufficient to accomplish drag reduction which includes means to dilute the solution connected between the second chamber and the means for injecting the solution as formed into the boundary layer.
Claim 4
Independent Claim
169 words
An apparatus for applying drag-reducing additives comPrising a mixing chamber to rapidly form a suspension of soluble polymeric material in a solvent and which mixing chamber includes means to contact the polymeric material with a stream of the solvent and hydration proceeds during passage of the suspension to a solid surface which is to be lubricated by drag-reducing additives, means for hydrating the suspension as formed until a solution of a substantial portion of the polymer has been produced to form a more concentrated solution that is needed for drag reduction, wherein the hydration means comprises a second chamber connected to the mixing chamber and the means for injecting the solution as formed into a boundary layer are connected to the second chamber, and means to inject the solution as formed into the boundary layer at a flow rate sufficient to accomplish drag reduction which includes means to dilute the solution connected between the second chamber and the means for injecting the solution as formed into the boundary layer.
Claim 5
Independent Claim
152 words
An apparatus for applying drag-reducing additives comprising a mixing chamber to rapidly form a suspension of a soluble polymeric material in a solvent and which mixing chamber includes means to contact the polymeric material with a stream of the solvent and hydration proceeds during passage of the suspension to a solid surface which is to be lubricated by drag-reducing additives wherein the solvent stream is ambient liquid provided from an opening in the surface to be lubricated by drag-reducing additives, means for hydrating the suspension as formed until a solution of a substantial portion of the polymer has been produced to form a more concentrated solution than is needed for drag reduction and wherein a portion of the solvent stream bypasses the mixing chamber and dilutes the solution formed upon hydration, and means to inject the solution as formed into a boundary layer at a flow rate sufficient to accomplish drag reduction.
Claim 6
Independent Claim
152 words
An apparatus for applying drag-reducing additives comprising a mixing chamber to rapidly form a suspension of a soluble polymeric material in a solvent and which mixing chamber includes means to contact the polymeric material with a stream of the solvent and hydration proceeds during passage of the suspension to a solid surface which is to be lubricated by drag-reducing additives wherein the solvent stream is ambient liquid provided from an opening in the surface to be lubricated by drag-reducing additives, means for hydrating the suspension as formed until a solution of a substantial portion of the polymer has been produced to form a more concentrated solution than is needed for drag reduction and wherein a portion of the solvent stream bypasses the mixing chamber and dilutes the solution formed upon hydration, and means to inject the solution as formed into a boundary layer at a flow rate sufficient to accomplish drag reduction.
Claim 7
Independent Claim
186 words
An apparatus for applying drag-reducing additives comprising a mixing chamber to rapidly form a suspension of soluble polymeric material in a solvent and which mixing chamber includes means to contact the polymeric material with a stream of the solvent and hydration proceeds during passage of the suspension to a solid surface which is to be lubricated by drag-reducing additives, means for hydrating the suspension as formed until a solution of a substantial portion of the polymer has been produced to form a more concentrated solution than is needed for drag reduction wherein the hydration means comprises a second chamber connected to the mixing chamber and the means for injecting the solution as formed into a boundary layer are connected to the second chamber, and means to inject the solution as a substantial the boundary layer at a flow rate sufficient to accomplish drag reduction which includes means to dilute the solution is connected between the second chamber and the means for injecting the solution as formed into the boundary layer and receives ambient liquid from an opening in the surface to be lubricated by drag reduction.
Claim 8
Independent Claim
186 words
An apparatus for applying drag-reducing additives comprising a mixing chamber to rapidly form a suspension of soluble polymeric material in a solvent and which mixing chamber includes means to contact the polymeric material with a stream of the solvent and hydration proceeds during passage of the suspension to a solid surface which is to be lubricated by drag-reducing additives, means for hydrating the suspension as formed until a solution of a substantial portion of the polymer has been produced to form a more concentrated solution than is needed for drag reduction wherein the hydration means comprises a second chamber connected to the mixing chamber and the means for injecting the solution as formed into a boundary layer are connected to the second chamber, and means to inject the solution as a substantial the boundary layer at a flow rate sufficient to accomplish drag reduction which includes means to dilute the solution is connected between the second chamber and the means for injecting the solution as formed into the boundary layer and receives ambient liquid from an opening in the surface to be lubricated by drag reduction.
Claim 9
Independent Claim
95 words
An apparatus for applying drag-reducing additives comprising a mixing chamber to rapidly form a suspension of a soluble polymeric material in a solvent and further including means to supply a neutral density dispersion of a solid soluble polymer in a nonsolvent liquid, means for hydrating the suspension as formed until a solution of a substantial portion of the polymer has been produced to form a more concentrated solution than is needed for drag reduction, and means to inject the solution as formed into a boundary layer at a flow rate sufficient to accomplish drag reduction.
Claim 10
Independent Claim
95 words
An apparatus for applying drag-reducing additives comprising a mixing chamber to rapidly form a suspension of a soluble polymeric material in a solvent and further including means to supply a neutral density dispersion of a solid soluble polymer in a nonsolvent liquid, means for hydrating the suspension as formed until a solution of a substantial portion of the polymer has been produced to form a more concentrated solution than is needed for drag reduction, and means to inject the solution as formed into a boundary layer at a flow rate sufficient to accomplish drag reduction.
Claim 11
Independent Claim
83 words
A method for applying a drag-reducing additive which comprises mixing soluble polymeric material with liquid solvent to form rapidly a liquid suspension, hydrating said suspension as formed until a substantial portion of sad polymeric material has been dissolved to form a more concEntrated solution than is needed for drag reduction, and injecting the solution as formed into a boundary layer at a flow rate sufficient to accomplish drag reduction in which the polymer solution is diluted prior to injection into the boundary layer.
Claim 12
Independent Claim
83 words
A method for applying a drag-reducing additive which comprises mixing soluble polymeric material with liquid solvent to form rapidly a liquid suspension, hydrating said suspension as formed until a substantial portion of sad polymeric material has been dissolved to form a more concEntrated solution than is needed for drag reduction, and injecting the solution as formed into a boundary layer at a flow rate sufficient to accomplish drag reduction in which the polymer solution is diluted prior to injection into the boundary layer.
Claim 13
Independent Claim
87 words
A method for applying a drag-reducing additive which comprises mixing soluble polymeric material with liquid solvent to form rapidly a liquid suspension wherein the polymeric material is a neutral density dispersion of solid polymeric particles in a nonsolvent liquid, hydrating said suspension as formed until substantial sustantial portion of said solid polymeric particles have been dissolved to form a more concentrated solution than is needed for drag reduction, and injecting the solution as formed into a boundary layer at a flow rate sufficient to accomplish drag reduction.
Claim 14
Independent Claim
87 words
A method for applying a drag-reducing additive which comprises mixing soluble polymeric material with liquid solvent to form rapidly a liquid suspension wherein the polymeric material is a neutral density dispersion of solid polymeric particles in a nonsolvent liquid, hydrating said suspension as formed until substantial sustantial portion of said solid polymeric particles have been dissolved to form a more concentrated solution than is needed for drag reduction, and injecting the solution as formed into a boundary layer at a flow rate sufficient to accomplish drag reduction.
References Cited (Backward Citations)
US2954750A
Cited
US3286674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |