US4628040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making uniform spheroidal catalyst beads
Assignee: Mobil Oil AS
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Filing: 1985-09-17
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Granted: 1986-12-09
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Expires: 2005-09-17
Abstract
Abstract Uniform droplets of a bead-forming liquid are produced by positioning the end of a capillary tube in the throat of a venturi. An immiscible fluid flowing through the venturi detaches the droplets from the end of the capillary tube to produce uniform, spherical droplets which harden into spheroidal beads which have a uniform size.
Inventors
- 👤 Gary J. Green
- 👤 Albert B. Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:27
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/02; B01; B01J; B01J2/00; B01J2/02; B01J2/06; B01J2/08; B01J35/00; B01J35/50; B01J35/51; B05B7/00; B05B7/02; B05B7/06; B05B7/062; B05B7/066; B05B7/08; B05B7/0892; C; C10; C10L; C10L1/00; F; F23; F23D; F23D11/00; F23D11/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
71 words
A method of producing uniform spheroidal beads from a bead-forming liquid comprising: supplying said liquid to a capillary tube; supplying an immiscible fluid which flows through a venturi throat in which the other end of said capillary tube is positioned; detaching uniform, spherical droplets of said bead-forming liquid from the other end of said capillary tube by said flow of said immiscible fluid; and hardening said droplets into uniform spheroidal beads.
Claim 2
Independent Claim
71 words
A method of producing uniform spheroidal beads from a bead-forming liquid comprising: supplying said liquid to a capillary tube; supplying an immiscible fluid which flows through a venturi throat in which the other end of said capillary tube is positioned; detaching uniform, spherical droplets of said bead-forming liquid from the other end of said capillary tube by said flow of said immiscible fluid; and hardening said droplets into uniform spheroidal beads.
Claim 3
Dependent Claim
27 words
The method recited in claim 1 wherein said bead-forming liquid is a metal oxide-forming liquid and wherein said droplets are hardened into uniform spheroidal metal oxide beads.
Claim 4
Dependent Claim
25 words
The method recited in claim 2 wherein said bead-forming liquid is a catalyst-forming liquid and wherein said droplets are hardened into uniform spheroidal catalyst beads.
Claim 5
Dependent Claim
27 words
The method recited in claim 2 wherein said bead-forming liquid is a catalyst support-forming liquid and wherein said droplets are hardened into uniform, spheroidal catalyst support beads.
Claim 6
Dependent Claim
25 words
The method recited in claim 2 wherein said bead-forming liquid is an adsorbent forming-liquid and wherein said droplets are hardened into uniform, spheroidal adsorbent beads.
Claim 7
Dependent Claim
30 words
The method recited in claim 2 wherein said bead-forming liquid is an ion exchange material-forming liquid and wherein said droplets are hardened into uniform, spheroidal beads of ion exchange material.
Claim 8
Dependent Claim
18 words
The method recited in claim 1 further comprising: controlling the flow of bead-forming liquid to said capillary tube.
Claim 9
Dependent Claim
38 words
The method recited in claim 1 wherein said immiscible fluid is a gas further comprising: controlling the flow of gas through said venturi throat to control the detachment of said droplets from the end of said capillary tube.
Claim 10
Dependent Claim
11 words
The method recited in claim 8 wherein said gas is air.
Claim 11
Dependent Claim
11 words
The method recited in claim 8 wherein said gas is ammonia.
Claim 12
Dependent Claim
39 words
The method recited in claim 1 wherein said immiscible fluid is a liquid further comprising: controlling the flow of said liquid through said venturi throat to control the detachment of said droplets from the end of said capillary tube.
Claim 13
Dependent Claim
29 words
The method recited in claim 1 wherein said immiscible fluid is oil, said method further comprising: pumping said oil through said venturi throat to detach droplets of said liquid.
Claim 14
Dependent Claim
25 words
The method recited in claim 12 further comprising: hardening said droplets in an oil bath; and recirculating oil from said bath to said venturi throat.
Claim 15
Dependent Claim
38 words
The method recited in claim 1 further comprising: detaching droplets from a plurality of capillary tubes with the end of each tube positioned in a venturi throat; hardening the droplets from said capillary tubes in a common vessel.
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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) | 1989-12-08 | 1990-06-09 | 1990-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-08 | 1994-06-09 | 1994-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-08 | 1998-06-09 | 1998-12-09 | $7700.00 | Window Closed / Lapsed |