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Patent US3699178A successfully refreshed from Google Patents.
US3699178A
Expired / Lapsed
US
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Oxychlorination process
Assignee: Toagosei Co Ltd
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Filing: 1968-02-12
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Granted: 1972-10-17
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Expires: 1988-02-12
Abstract
Abstract In a process for the oxychlorination of a hydrocarbon, such as ethylene using Deacon catalyst containing copper chloride in a fixed catalyst bed system, the temperature distribution can be uniformly maintained throughout the catalyst bed and the selectivity of the reaction can be increased by arranging the catalyst bearing carrier particles in such a manner that the size of the particles in the reactor at the inlet side of feed gases is larger than that of the particles at the outlet side of product gases.
Inventors
- 👤 Yoshitaka Suzuki
- 👤 Atsushi Takenoue
- 👤 Hideo Kojima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:45
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/15
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
13 words
The process according to claim 1 in which said organic reactant is ethylene.
Claim 2
Dependent Claim
76 words
The process according to claim 1 in which the ratio of the apparent diameter of the catalyst bearing carrier particles at the feed inlet of the bed to the apparent diameter of said particles at the product outlet of the bed is less than 3, the apparent diameter being defined as (1 + b + h)/(3), wherein 1 is an average particle length, b is an average particle width and h is an average particle height.
Claim 3
Dependent Claim
24 words
The process according to claim 1 in which the fixed bed contains glass beads, as a diluent, in addition to the catalyst-bearing carrier particles.
Claim 4
Dependent Claim
32 words
The process according to claim 4, in which the glass beads are present at a level of from 0.5 to 3.0 times by volume to the volume of the catalyst-bearing carrier particles.
Claim 5
Dependent Claim
18 words
The process according to claim 1 in which said bed is contained in a reactor lined with glass.
Claim 6
Dependent Claim
52 words
The process according to claim 1 additionally comprising, removing the hydrogen chloride from the product gas stream, cooling the resultant gas stream to condense out the greater part of the formed chlorinated hydrocarbons, compressing the uncondensible gas to the reaction pressure and recycling a part of the compressed gas to the reactor.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |