Patent US1298873A successfully refreshed from Google Patents.
Patent US3617033A successfully refreshed from Google Patents.
US3617033A
Expired / Lapsed
US
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Apparatus for continuous gas-liquid contact
Assignee: Teijin Ltd
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Filing: 1968-11-01
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Granted: 1971-11-02
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Expires: 1988-11-01
Abstract
Abstract A gas-liquid contacting apparatus including a vertical vessel divided in the vertical direction into at least two sections by at least one tapered partition wall; each of the sections is constructed such that the material contained in one section may be conducted successively to the bottom or lower portion of the other section by an opening provided at the bottom of the partition wall or by a conduit which extends through two sections and has an end downstream of a fluid which opens into the lower portion of the other section; the first section comprises a supply pipe for supplying liquid or suspension and a pipe for feeding a desired gas into the lower part of the section: and the last section includes at least one exhaust opening for withdrawing the treated liquid or suspension and gas. The apparatus is particularly useful for refining of crude terephthalic acid by contacting a suspension thereof with molecular oxygen.
Inventors
- 👤 Yataro Ichikawa
- 👤 Michiyuki Tokashiki
- 👤 Tadashi Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:36
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/24; B01D3/26; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F23/2322; B01J; B01J19/00; B01J19/0053; B01J19/006; B01J19/0066; B01J19/24; B01J19/2415; B01J19/2425; C; C07; C07C; C07C51/00; C07C51/42; C07C51/487; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00103; B01J2219/00159; B01J2219/00171; B01J2219/00175; B01J2219/00761; B01J2219/00763; B01J2219/00765; B01J2219/0077; B01J2219/00774
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
32 words
The gas-liquid contacting apparatus as recited in claim 1 wherein said first inlet for supplying the liquid or suspension and said second inlet for supplying the gas communicate with said first section.
Claim 2
Dependent Claim
39 words
The gas-liquid contacting apparatus as recited in claim 1 wherein said second inlet for supplying gas is disposed at said tapered bottom of said vessel and a guide cylinder is disposed above said second inlet in said first section.
Claim 3
Dependent Claim
39 words
The gas-liquid contacting apparatus as recited in claim 1 wherein a guide cylinder is disposed in said second section above said opening in said tapered partition wall for conducting the mixture of the liquid or suspension and the gas.
Claim 4
Dependent Claim
25 words
The gas-liquid contacting apparatus as recited in claim 1 wherein said tapered partition wall has a conical surface with an apex angle of 30*to 90*.
Claim 5
Dependent Claim
27 words
The gas-liquid contacting apparatus as recited in claim 1 wherein said vessel is divided into four to 20 sections by a plurality of said tapered partition walls.
Claim 6
Dependent Claim
29 words
The gas-liquid contacting apparatus as recited in claim 1 wherein said first section has liquid disposed therein having a surface defined by said opening in said tapeRed partition wall.
Claim 7
Dependent Claim
130 words
Gas-liquid contact apparatus comprising a vertical vessel having a tapered bottom; a first inlet in said vessel for supplying a liquid or suspension thereto; a second inlet in said vessel for feeding a gas thereto to contact the liquid or suspension; at least one tapered closed partition wall dividing the vessel into at least first and second substantially closed, vertically superposed sections; a conduit extending from said first section to the bottom portion of said second section through said tapered partition wall for conducting the mixture of the liquid or suspension and the gas from said first section to the bottom portion of said second section; and an outlet in said vessel communicating with said second section for withdrawing the gas and the liquid or suspension contacted with the gas.
Claim 8
Dependent Claim
32 words
The gas-liquid contacting apparatus as recited in claim 8 wherein said first inlet for supplying the liquid or suspension and said second inlet for supplying the gas guide-cylinder with said first section.
Claim 9
Dependent Claim
38 words
The gas-liquid contacting apparatus as recited in claim 8 wherein said second inlet for supplying gas is disposed at said tapered bottom of said vessel and a guide-cylinder is disposed above said second inlet in said first section.
Claim 10
Dependent Claim
26 words
The gas-liquid contacting apparatus as recited in claim 8 wherein said tapered partition wall has a conical surface with an apex angle of 30* to 90*.
Claim 11
Dependent Claim
27 words
The gase-liquid contacting apparatus as recited in claim 8 wherein said vessel is divided into four to 20 sections by a plurality of said tapered partition walls.
Claim 12
Dependent Claim
49 words
The gas-liquid contacting apparatus as recited in claim 8 wherein said first section has liquid disposed therein and said conduit has a first end disposed in the bottom portion of said second section and a second end disposed in said first section and defining a surface of said liquid.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |