US4722787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for contacting two immiscible liquids with the application of an electric field
Assignee: ARMINES
•
Filing: 1985-08-01
•
Granted: 1988-02-02
•
Expires: 2005-08-01
Abstract
Abstract The invention relates to an apparatus for contacting two immiscible liquids having at least one electrode for the application of an electric field. The electrode is coated with at least two layers of different insulating materials, the first layer which is in contact with the electrode being formed from a liquid insulating material, e.g. benzylneocaprate or transformer oil, while the outer layer is formed from a solid insulating material, e.g. polytetrafluoroethylene. These electrodes are preferably in the form of bars arranged parallel to the fluid flow direction and they are provided with deflectors to ensure that no dispersed phase flow in the form of a film takes place along the bars.
Inventors
- 👤 Christine Fombarlet
- 👤 Michel Guenehec
- 👤 Francis Lancelot
- 👤 Laurent Martin
- 👤 Paul Vignet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:56
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/04; B01D11/0419; B01D17/00; B01D17/06; B01F; B01F23/00; B01F23/40; B01F23/41; B01F23/411
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
201 words
An apparatus for the cocurrent or countercurrent contacting of two immiscible liquids whereof one constitutes a continuous phase and the other constitutes a dispersed phase dispersed in the form of droplets or bubbles in the continuous phase which comprises: a container having an inlet means for the continuous phase liquid and an inlet means for the dispersed phase liquid and an outlet means for the continuous phase liquid and an outlet means for the dispersed phase liquid; means for bringing about the mixing and/or separation of the two phases within the container comprising at least two spaced electrodes each having insulant coating comprising at least two layers of different materials, the first layer being an inner layer which is a liquid insulating material in contact with the electrode and the second layer being an outer layer which is a solid insulating material, the area within the container between the electrodes defining an inner electrode space; and means to inhibit the flow of the dispersed phase along the electrodes and to redistribute such flow toward the inner electrode space comprising a deflector mounted on each of said electrodes and being made from a material which resists being wetted by said dispersed phase.
Claim 2
Independent Claim
201 words
An apparatus for the cocurrent or countercurrent contacting of two immiscible liquids whereof one constitutes a continuous phase and the other constitutes a dispersed phase dispersed in the form of droplets or bubbles in the continuous phase which comprises: a container having an inlet means for the continuous phase liquid and an inlet means for the dispersed phase liquid and an outlet means for the continuous phase liquid and an outlet means for the dispersed phase liquid; means for bringing about the mixing and/or separation of the two phases within the container comprising at least two spaced electrodes each having insulant coating comprising at least two layers of different materials, the first layer being an inner layer which is a liquid insulating material in contact with the electrode and the second layer being an outer layer which is a solid insulating material, the area within the container between the electrodes defining an inner electrode space; and means to inhibit the flow of the dispersed phase along the electrodes and to redistribute such flow toward the inner electrode space comprising a deflector mounted on each of said electrodes and being made from a material which resists being wetted by said dispersed phase.
Claim 3
Dependent Claim
26 words
An apparatus according to claim 1, wherein the liquid insulating material is chosen from the group consisting of phenylxylylethane, a polychlorobiphenyl compound, benzylneodecanoate and transformer oil.
Claim 4
Independent Claim
20 words
An apparatus according to either of the claims 1 and 2, wherein the solid insulating material is an organic polymer.
Claim 5
Dependent Claim
23 words
An apparatus according to claim 3, wherein the organic polymer is chosen from the group consisting of polytetrafluoroethylene, vinylidene polyfluoride, polyethylene and polypropylene.
Claim 6
Dependent Claim
24 words
An apparatus according to claim 1, wherein the electrodes are in the form of bars arranged in parallel in flow direction of the liquids.
Claim 7
Dependent Claim
17 words
An apparatus according to claim 5, wherein the deflectors are constituted by rings arranged on said bars.
Claim 8
Independent Claim
59 words
An apparatus according to any one of the claims 1 and 5, further comprising a plurality of electrodes arranged in parallel in the liquid flow direction, said electrodes defining in the container a plurality of stages and which can be raised to different potentials, so that the electric field can vary independently in the different stages of the container.
Claim 9
Dependent Claim
87 words
An apparatus according to claim 7 for the countercurrent contacting of two immiscible liquids, wherein the inlet means for the continuous phase and outlet means for the dispersed phase are located in a first part of the container and the inlet means for the dispersed phase and the outlet means for the continuous phase are spaced apart and located in a second part of the container, and further comprising an electrocoalescer located in the second part of the container between the second inlet and the second outlet.
Claim 10
Dependent Claim
19 words
An apparatus according to claim 8, wherein the electrocoalescer has two electrodes connected to ground surrounding a live electrode.
Claim 11
Dependent Claim
32 words
An apparatus according to claim 8, wherein one of the two electrodes is connected to ground and is located in the second part of the container, and the other electrode is live.
Claim 12
Dependent Claim
10 words
An apparatus according to claim 1, further comprising a packing.
References Cited (Backward Citations)
US1559035A
Cited
US1838924A
Cited
US1838376A
Cited
US1887010A
Cited
FR2021060A1
Cited
JPS5082599A
Cited
US4182672A
Cited
US4238304A
Cited
US4308127A
Cited
US4415426A
Cited
US4409078A
Cited
SU995848A1
Cited
EP0072628A1
Cited
FR2496081A1
Cited
US4636290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-01 | 1991-08-03 | 1992-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-01 | 1995-08-03 | 1996-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-01 | 1999-08-03 | 2000-02-02 | $7700.00 | Window Closed / Lapsed |