US4325923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contacting of plural phases
Assignee: Rhone Poulenc Industries SA
•
Filing: 1980-05-30
•
Granted: 1982-04-20
•
Expires: 2000-05-30
Abstract
Abstract Intimate and efficient contacting of plural, physically disparate phases, e.g., a gas and a liquid, is achieved by contacting the phases cocurrently in a column. The gas phase is introduced at a velocity between its phase transition inversion point (T) and multiple critical point (M c ) velocities, which velocity is sufficient to create a dispersion of the second phase, i.e., the liquid phase, in the gas and thereby establish at most the following zones, from bottom to top, in the column: a bottom zone of constant liquid concentration designated the emulsion zone, a zone of decreasing liquid concentration, and a zone of constant liquid concentration wherein the liquid exists in the form of droplets. The feed velocity of the liquid is adjusted accordingly to provide a mass liquid concentration value in the emulsion that is between the mass liquid concentration value transition inversion point and multiple critical point values.
Inventors
- 👤 Roger Botton
- 👤 Dominique Cosserat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:01
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/62; B01D3/00; B01D3/14; B01D3/26; B01D47/00; B01D47/02; B01D47/021; B01D53/74; B01D53/86; B01D53/8603; B01D53/8609; B01D53/8621; B01D53/8625; Y; Y10; Y10S; Y10S261/00; Y10S261/75
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
154 words
In a process for the contacting of a gaseous phase with a liquid phase by cocurrently introducing the plural, physically disparate phases into a contactor, the improvement comprising (i) introducing the gaseous phase at a velocity which exceeds its phase transition inversion velocity and is thereby sufficient to create a dispersion of the liquid phase in the gas and establish at most the following zones, from bottom to top, in the column: (a) an emulsion zone of constant liquid concentration, (b) an intermediate zone of decreasing liquid concentration, and (c) a zone of constant liquid concentration wherein the liquid concentration is less than that in the emulsion zone, but wherein said velocity is less than its multiple critical point velocity; and, (ii) introducing the liquid phase at a velocity sufficient to establish a mass liquid concentration in the emulsion zone which is between its corresponding phase transition inversion point and multiple critical point values.
Claim 2
Dependent Claim
154 words
In a process for the contacting of a gaseous phase with a liquid phase by cocurrently introducing the plural, physically disparate phases into a contactor, the improvement comprising (i) introducing the gaseous phase at a velocity which exceeds its phase transition inversion velocity and is thereby sufficient to create a dispersion of the liquid phase in the gas and establish at most the following zones, from bottom to top, in the column: (a) an emulsion zone of constant liquid concentration, (b) an intermediate zone of decreasing liquid concentration, and (c) a zone of constant liquid concentration wherein the liquid concentration is less than that in the emulsion zone, but wherein said velocity is less than its multiple critical point velocity; and, (ii) introducing the liquid phase at a velocity sufficient to establish a mass liquid concentration in the emulsion zone which is between its corresponding phase transition inversion point and multiple critical point values.
Claim 3
Dependent Claim
35 words
The process as defined by claim 1 wherein said gas velocity is between 5.5 meters per second and 13.5 meters per second and the mass liquid concentration is between 170 and 20 kg/m 3 .
Claim 4
Dependent Claim
31 words
The process defined by claim 1 wherein said liquid phase is an aqueous phase and the mass liquid concentration in the emulsion zone is between 170 and 20 Kg/m 3 .
Claim 5
Dependent Claim
15 words
The process of claim 1, 2 or 3 wherein the gaseous phase comprises nitrogen oxides.
Claim 6
Dependent Claim
16 words
The process of claim 1, 2 or 3 wherein the gaseous phase comprises SO 2 .
Claim 7
Dependent Claim
27 words
The process of claim 1, 2 or 3 wherein a carbonation reaction is effected by contacting an aqueous sodium hydroxide solution with a carbon dioxide gaseous phase.
Claim 8
Dependent Claim
17 words
The process of claim 1 or 2 wherein a solid catalyst is carried in said liquid phase.
Claim 9
Dependent Claim
16 words
The process of claim 1 or 2 wherein solid materials are suspended in the liquid phase.
Claim 10
Dependent Claim
32 words
The process of claim 1 or 2 wherein the gaseous phase is dust laden and the liquid phase is contacted with the gaseous phase to thereby remove the dust from said gas.
Claim 11
Dependent Claim
22 words
The process of claim 1 or 2 wherein the liquid phase comprises two immiscible liquids which are contacted with said gaseous phase.
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) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |